The 2011 Periastron Passage of the Be Binary d Scorpii |
2013 |
2215 |
We describe the results of the world-wide observing campaign of the highly eccentric Be binary system d Scorpii 2011 periastron passage which involved professional and amateur astronomers. Our spectroscopic observations provided a precise measurement... |
AMBER/VLTI Observations of the B[e] Star MWC 300 |
2012 |
1227 |
Aims. We study the enigmatic B[e] star MWC?300 to investigate its disk and binary with milli-arcsecond-scale angular resolution.
Methods. We observed MWC?300 with the VLTI/AMBER instrument in the H and K bands and compared these observations with te... |
AS 314: A dusty A–type hypergiant |
2000 |
3128 |
We present the results of our observations of the poorly-studied emission-line star AS 314 which include high-resolution spectroscopy, obtained at the 6 -meter telescope of the Russian Academy of Sciences, multicolor optical and near-infrared photome... |
The Asymmetrical Wind of the Candidate Luminous Blue Variable MWC 314 |
2006 |
2038 |
We present the results of long-term spectropolarimetric and spectroscopic monitoring of MWC 314, a candidate Luminous Blue Variable star. We detect the first evidence of Ha variability in MWC 314, and find no apparent periodicity in this emission. Th... |
An atlas of spectra of B6–A2 hypergiants and supergiants from 4800 to 6700 Å |
2003 |
3295 |
We present an atlas of spectra of 5 emission-line stars: the low-luminosity luminous blue variables (LBVs) HD 168625 and HD 160529, the white hypergiants (and LBV candidates) HD 168607 and AS 314, and the supergiant HD 183143. The spectra were obtain... |
B-type emission-line stars with warm circumstellar dust |
2000 |
943 |
We selected a group of 11 B-type emission-line stars with large IR excesses, which show a steep flux decrease towards longer wave-lengths. Analysis of their observational characteristics has been carried out on the basis of the data collected from li... |
Be Binaries with Warm Dust and Exotic High-Luminosity A-F Emission-Line Stars |
2002 |
1443 |
We present the results of photometric and high resolution spectroscopic studies of a group of B[e] stars (Be stars with warm dust or B[e]Ds) and of two cooler objects with extremely high luminosities (HDE 331319 and IRC+10420). The BeDs is a growing ... |
The B[e] phenomenon in the Milky Way and Magellanic Clouds |
2010 |
1650 |
Discovered over 30 years ago, the B[e] phenomenon has not yet revealed all its puzzles.
New objects that exhibit it are being discovered in the Milky Way, and properties of known
objects are being constrained. We review recent findings about object... |
Binaries Among Be Stars |
2016 |
379 |
Binarity as an explanation of some observed properties of Be stars, such as the fast rotation and the presence of circumstellar disks, was suggested nearly 40 years ago. Although not well accepted initially because of the lack of supporting data, thi... |
Binary Nature and Long-Term Variations of (gamma) Cassiopeiae |
2002 |
1211 |
We present the results of high-resolution spectroscopic observations of the bright Be star γ Cas obtained at the Ritter Observatory of the University of Toledo in 1993–2002. Two components in the emission-line profile variations, a long-... |
Bispectrum speckle interferometry of the B[e] star MWC 349A |
2008 |
1509 |
We present the results of bispectrum speckle interferometry of the B[e] star MWC 349A obtained with the SAO 6 m telescope. Our diffraction-limited J-, H-, and K-band images (resolutions 43–74 mas) suggest the star is surrounded by a circumstellar dis... |
Confirmation of the Luminous Blue Variable Status of MWC 930 |
2014 |
1896 |
We present spectroscopic and photometric observations of the emission-line star MWC 930 (V446 Sct) during its long-termoptical brightening in 2006–2013. Based on our earlier data we suggested that the object has features found in Luminous Blue Variab... |
Discovery of spectral variation in the optical counterpart of IRAS 01005+7910 |
2002 |
1231 |
We present a study of the high-resolution spectroscopic data for the proto-planetary nebula candidate IRAS 01005+7910. For the first time a careful spectral line identification is carried out, and a significant variability of the optical spectrum is ... |
Discovery of two new Galactic candidate luminous blue variables with Wide-field Infrared Survey Explorer |
2012 |
2087 |
We report the discovery of two new Galactic candidate luminous blue variable (LBV) stars via detection of circular shells (typical of confirmed and candidate LBVs) and follow-up spectroscopy of their central stars. The shells were detected at 22 µm i... |
Disks and Halos in Pre-Main-Sequence Stars |
2008 |
2270 |
We study the IR emission from flared disks with and without additional optically thin halos. Flux calculations of a flared disk in vacuum can be considered a special case of the more general family of models in which the disk is imbedded in an optica... |
Doppler Tomography of the Circumstellar Disk of p Aquarii |
2013 |
1115 |
Aims. The work is aimed at studying the circumstellar disk of the bright classical binary Be star p Aqr.
Methods. We analysed variations of a double-peaked profile of the Ha emission line in the spectrum of p Aqr that was observed in many phases dur... |
Dust Emission from Herbig Ae/Be Stars - Evidence for Disks and envelopes |
1999 |
1050 |
IR and mm-wave emission from Herbig Ae/Be stars has produced conflicting conclusions regarding the dust geometry in these objects. We show that the compact dimensions of the mm-wave emitting regions are a decisive indication for disks. But a disk can... |
Far-infrared excesses in classical Be stars |
2000 |
1682 |
A sample of Be stars with large far-infrared excesses detected by IRAS is selected and their high-resolution IRAS images are examined. The far-infrared emission from most of them is marginally extended and is associated with the optical sources. Mode... |
FS CMa Type Binaries |
2015 |
394 |
FS CMa type stars is a group of ~70 objects formerly known as unclassified stars with the B[e] phenomenon. Their very strong emission-line spectra in combination with a nearly main-sequence luminosity suggest the binary nature for them. They possess ... |
Fundamental parameters and evolutionary state of the Herbig Ae star candidate HD 35929 |
2004 |
2186 |
HD 35929 is a pre-main-sequence Herbig Ae star candidate that exhibits emission in the Hα line and a weak IR excess. Although its luminosity type was estimated as TV from low-resolution spectroscopy, the insignificant HIPPARCOS parallax (0.88 &... |
HD 19993 and HD 29035: New bright A-type emission-line stars |
2003 |
2276 |
We present the results of photometric and spectroscopic observations of two A-type stars (HD 19993 and HD 29035), optical counterparts of the IRAS sources (F03108+3729 and 04331+5211, respectively). Hα line emission is found in the optical spec... |
High resolution spectroscopy of the galactic candidate LBV MWC 314 |
1998 |
2634 |
The results of high-resolution optical spectroscopy obtained for a recently suggested LBV candidate, MWC 314, are presented. Photospheric lines mostly of N ii and S ii have been found for the first time with a resolution
of 0:4 - 0:8 Å. They ... |
High State of Ha Emission Activity of the Herbig Be Star HD 200775 |
1998 |
2183 |
We present the results of high-resolution spectroscopic observations of the pre–main-sequence Herbig Be star HD 200775 obtained between 1994 September and 1998 February. Strong variations of the Ha line associated with an extended period of strong em... |
High-resolution optical spectroscopy of the yellow hypergiant V1302 Aql (=IRC+10420) in 2001–2014 |
2016 |
451 |
We present the results of a study of spectral features and the velocity field in the atmosphere and circumstellar envelope of the yellow hypergiant V1302 Aql, the optical counterpart of the IR source IRC+10420, based on high-resolution optical spectr... |
Interpreting the spectral behavior of MWC?314 |
2016 |
510 |
Context. MWC?314 is one of the most luminous stars in the Milky Way. Its fundamental parameters are similar to those of luminous blue variables (LBVs), although no large photometric variations have been recorded. Moreover, it shows no evidence of eit... |
Long-term Varability of π Aqr |
2000 |
719 |
We present our recent photometric and spectroscopic observations of the bright classical Be star π Aquarii and analyse those available in literature. This star currently shows only weak signs of circumstellar emission and low optical brightness... |
The Low State of Z CMa |
1993 |
688 |
Z CMa, a remarkable star, has been attracting the attention of observers for many years. Its photometric behaviour summarized at least twice recently (Covino et al., 1984. Kolotilov, 1991) often shows new details. After the period of a relative stabi... |
LS II +22 8 - a newly recognized classical Be star |
1999 |
969 |
LS II +22°8 was discovered by Stock et al. (1960) as a possible luminous early-type star with emission in the Ha line. Later it was listed in the Henize (1976) catalog of emission-line stars as Hen 1764. |
The Luminous B [e] Binary AS 381 |
2002 |
1395 |
We present the results of optical and near-IR spectroscopic and broadband multicolour photometric observations of the emission-line star AS 381. Its properties were found to be similar to those of Be stars with warm dust, a group of galactic objects ... |
Massive early-type emission-line stars: an attempt to establish a new group of stellar objects |
1995 |
1023 |
A new sample of possibly massive early-type emission-line stars (METELS) based on the previous lists of peculiar Be stars is presented. It consists of 36 objects divided amongst supergiants, possible binaries, and candidates to the list. The central ... |
Modeling the Structure of Hot Star Disks: a Critical Evaluation of the Viscous Decretion Scenario |
2006 |
1334 |
We present self-consistent solutions for the disk structure of classical Be stars. Our disk model is hydrostatically supported in the vertical direction and the radial structure is governed by viscosity (a-disks). We perform three-dimensional non-LTE... |
MWC 314: a high-luminosity peculiar B[e] star |
1996 |
1062 |
New broad-band multicolor photometry and optical spectroscopy of the emission-line star MWC 314 = BD +14°3887 as well as a study of its ultraviolet spectrum are reported. It is shown that the star exhibits photometric variability with
a quasi-regula... |
MWC 657 - a new peculiar Be star |
1997 |
957 |
MWC 657 was distinguished as a star of B spectral type with mV = 12m and Ha in emission (Merill & Burwell 1943). We obtained photoelectric UBVRIK observations of MWC 657 in the Johnson system at a 1—meter telescope of the Tien—Shan Observatory (Kazak... |
New objects with the B[e] phenomenon in the Large Magellanic Cloud |
2014 |
443 |
Aims. The study is aimed at discovering new objects with the B[e] phenomenon in the Large Magellanic Cloud.Methods. We report medium-resolution optical spectroscopic observations of two newly found (ARDB?54 and NOMAD?0181-0125572) and two previously ... |
A new phase of activity of the Herbig Be star HD 200775 in 2001: Evidence for binarity |
2004 |
1582 |
The results of high-resolution spectroscopy of the Herbig Be star HD 200775 obtained within the framework of a cooperative observing programme in 2000–2002 are presented. A new high-activity phase of the object’s Ha line occurred in the middle of 200... |
New possible binaries among B[e] stars |
1995 |
2430 |
The majority of B[e] stars are probably Post-Main-Sequence objects with circumstellar dust shells. Their complicated spectral energy distributions (SED) and line spectra make the determination of the object composition very difficult. We present here... |
A new spectroscopic and interferometric study of the young stellar object V645 Cygni |
2009 |
2233 |
Aims. We present the results of high-resolution optical spectroscopy, low-resolution near-IR spectroscopy and near-infrared speckle interferometry of the massive young stellar object candidate V645 Cyg, acquired to refine its fundamental parameters a... |
Nova Vulpeculae 1984 N2 in 1985 |
1988 |
1363 |
The results of UBVRHHK photometric, UBVRI polarimetric, and spectrophotometric (2.1322.5-722.5 nm) observations of the second Nova Vulpeculae (QU Vul) are given for the period from May 1985 to December 1985. A dust shell of the Nova was discovered in... |
Observations of emission-line stars with IR excesses. II. Multicolor photometry of B[e] stars |
1995 |
1260 |
UBVRIJHK and UBVRI photometry of 10 peculiar Be stars obtained in 1989-1994 using the
I-meter telescope of the Assy Observatory in Kazakhstan is presented. The observed properties of the objects are briefly described. This paper summarizes a part of... |
Observations of recently recognized candidate Herbig Ae/Be stars |
1999 |
1358 |
The results of multicolor photometric and low resolution spectroscopic observations of 9 Herbig Ae/Be candidate stars are reported. This sample includes two newly recognized objects, MQ Cas and BD+11 º 829, which were found by means of cross-co... |
On Protostellar Disks in Herbig Ae/Be Stars |
1996 |
1454 |
The spectral shape of IR emission from Herbig Ae/Be stars has been invoked as evidence for accretion disks around high-mass protostars. Instead, we present here models based on
spherical envelopes with r -1.5 dust density profile that successfully e... |
On the Source of Optical Variability and Outflow in Z CMa System |
1998 |
867 |
We discuss our new (Teodorani et al. 1997) and already published photometric and spectroscopic data regarding the binary system Z CMa and conclude that these data, in contrast to wide spread opinion, do not contradict the hypotesis that a FU On type ... |
On The Source of Optical Variability and Outflow in Z CMa System |
1998 |
660 |
We discuss our new (Teodorani et al. 1997) and already published photometric and spectroscopic data regarding the binary system Z CMa and conclude that these data, in contrast to wide spread opinion, do not contradict the hypotesis that a FU On type ... |
Optical and near-infrared photometry of the Vega-excess star SAO 26804=HD 233517 |
1996 |
1358 |
UBVRUHK photometry of the Vega-excess star SAO 26804=HD 233517 and several stars of its environments obtained at the I-meter telescope of the Tien-Shan Observatory in Kazakhstan is presented. It is shown that the star has a later
spectral type than... |
Peculiar early-type supergiants and LBVs: resemblance and difference |
1997 |
1138 |
Peculiar early-type supergiants (hereafter PETS) have been distinguished from normal ones because of stronger emission lines in their spectra. This is a result of different stellar wing kinematics: PETS have slower winds with low terminal velocities ... |
Photometric Observations of Mutual Events in Saturn’s System of Regular Satellites in 1995 |
2001 |
1978 |
We carried out observations of mutual events in Saturn’s system of satellites as part of the PHESAT95 International Program. Three light curves of these events were obtained. We developed a technique of allowance for the influence of the law of light... |
Photometric observations of the radio bright B[e]/X-ray binary CI Cam |
2000 |
1363 |
We present multiwavelength (optical, IR, radio) observations of CI Cam, the optical counterpart to the transient X-ray source XTE J0421+560. Pre-outburst quiescent observations reveal the presence of a dusty envelope around the system.
Pronounced sh... |
Photometry of VV Cep stars |
1993 |
1478 |
Photometric UBVRI and UBVRIJHL observations of 17 VV Cep stars were carried out from the end of 1989 to the beginning of 1993. For six of the stars, this was the first UBVRI photometry ever. The mean brightness level of the objects studied was found ... |
Polarimetry of the Protoplanetary Nebula AFGL 2688 |
2004 |
2299 |
Our spectroscopic (with resolution R = 75 000) and spectropolarimetric (R = 15 000) observations
with the 6-m telescope of the Special Astrophysical Observatory have enabled us to distinguish
photospheric and circumstellar features in... |
Polaris: History of Pulsation Activity since Discovery |
2017 |
471 |
The pulsation activity of small-amplitude Cepheid Alpha UMi (Polaris) during the period of its radial velocity observations has been analyzed. In the 20th century, Polaris was known to demonstrate a decrease in radial velocity amplitude to the minimu... |
The pre-main-sequence star IP Persei |
2001 |
2502 |
We present the results of high- and low-resolution spectroscopic and broadband multicolour photometric observations of the emission-line A-type star IP Per. Significant variations of the Balmer line profiles and near-IR brightness are detected. |
Properties and nature of Be stars 29. Orbital and long-term spectral variations of ? Cassiopeiae |
2012 |
1211 |
A detailed analysis of more than 800 electronic high-resolution spectra of gamma Cas, which were obtained during a time interval of over 6000 days (16.84 yr) at several observatories, documents the smooth variations in the density and/or extent of it... |
Properties of the d Scorpii Circumstellar Disk from Continuum Modeling |
2006 |
1390 |
We present optical W BV R and infrared JHKL photometric observations of the Be binary system d Sco, obtained in 2000–2005, mid-infrared (10 and
18 µm) photometry and optical (?? 3200–10500 ^A) spectropolarimetry obtained in 2001. Our optical photome... |
Properties of galactic B[e] supergiants II. HDE 327083 |
2003 |
1790 |
The emission-line object HDE 327083 has long been considered to be one of the most luminous stars in the Milky
Way. Nevertheless, no reliable physical parameters have been published for it. Our high-resolution optical spectroscopy revealed
the pres... |
Properties of galactic B[e] supergiants III. MWC 300 |
2004 |
1266 |
We present the results of optical and near-IR spectroscopic and mid-IR imaging observations of the emission-line star MWC 300. Its properties and evolutionary state are still under debate (a B[e] supergiant or a Herbig Be star). |
Properties of galactic B[e] supergiants V. Two-dimensional radiative transfer model of RY Sct and its dusty disc |
2005 |
1028 |
We present results of the first two-dimensional radiative transfer modelling of the eclipsing binary RY Sct and its dusty disc. Assuming an
effective temperature T͙ = 27 000K for both components and the distance D = 1.8 kpc, we derive the tota... |
Properties of Galactic B[e] supergiants. I. CI Camelopardalis |
2002 |
2367 |
We present a study of the high-resolution (R = 60 000) optical spectrum of the B[e] supergiant CI Cam obtained 4 years after its all-wavelength outburst. The profiles of most of the emission lines show a triple-peaked structure, an effect previously ... |
Properties of galactic B[e] supergiants. IV. Hen3–298 and Hen3–303 |
2008 |
1233 |
We present the results of optical and near-IR spectroscopic and near-IR photometric observations of the emission-line stars Hen3–298 and Hen3–303. Strong emission in the Ha line is found in both objects. The presence of Fe II and [O I] emission lines... |
The remarkable outburst of the highly evolved post-period-minimum dwarf nova SSS J122221.7-311525 |
2017 |
721 |
We report extensive 3-yr multiwavelength observations of the WZ Sge-type dwarf nova SSS J122221.7-311525 during its unusual double superoutburst, the following decline and in quiescence. The second segment of the superoutburst had a long duration of ... |
Revealing the nature of the B[e] star MWC 342 |
1999 |
1018 |
We carried out an analysis of existing multicolor
photometry and optical spectroscopy of MWC 342, a B[e] star with an uncertain evolutionary state. The star shows a gradual brightening in the optical and near-IR regions, while its Balmer
lines demo... |
Simultaneous Multicolour Photometry of Late-type Giant Stars |
2013 |
947 |
A set of 64 simultaneous optical and near-infrared photometric observations of 17 late-type giants in the Johnson UBVRIJHK system obtained in 1995-1999 is presented for the first time. |
Spectral Variability of the Peculiar A-Type Supergiant 3 Pup |
2010 |
1963 |
Optical spectra taken in 1997–2008 are used to analyze the spectral peculiarities and velocity field in the atmosphere of the peculiar supergiant 3 Pup. The profiles of strong Fe II lines and of the lines of other iron-group ions have a specific shap... |
Spectropolarimetry of the Massive Post-Red Supergiants IRC +10420 and HD 179821 |
2008 |
1937 |
We present medium resolution spectropolarimetry and long term photo-polarimetry of two massive post-red supergiants, IRC +10420 and HD 179821. The data provide new information on their circumstellar material as well as their evolution.
In IRC +10420... |
Spectroscopic and Spectropolarimetric Observations of V838 Mon |
2003 |
1228 |
The spectroscopic and spectropolarimetric variability of the peculiar variable V838 Monocerotis during the brighter phases of its multiple outbursts in 2002 is presented. Significant line profile variability of H alpha and Si II 6347.10 [angstrom] &... |
Spectroscopic behaviour of the Herbig Be star HD200775 around its maximum activity in 1997 |
2000 |
1029 |
We present the results of high-resolution spectroscopic observations of the pre-main-sequence (PMS) Herbig Be star HD200775 obtained between August 1994 and December 1999. The behaviour of H, H and He i before, during, and after the last high-activ... |
Spectroscopic Monitoring of ß CMi in the 21-st Century |
2016 |
285 |
We report the results of high-resolution spectroscopic observations obtained in 2000–2014. The goals of the program were to search for signs of binarity, which was suspected in several studies long ago but not confirmed by more recent data. We have m... |
Spectroscopic observations of the candidate sgB[e]/X-ray binary CI Cam |
2002 |
1294 |
We present a compilation of spectroscopic observations of the sgB[e] star CI Cam, the optical counterpart of XTE J0421+560. This includes data from before, during, and after its 1998 outburst, with quantitative results spanning 37 years. The object s... |
Spectroscopic Observations of d Sco Through the 2011 Periastron Passage |
2012 |
739 |
We present prelimiary results from a coordinated spectroscopic campaign in 2011, centered on the d Sco periastron passage in July. Data have mostly been obtained with the FEROS/2.2m at La Silla and ESPaDOnS/CFHT at Mauna Kea echelle instruments. Main... |
Spectroscopic observations of the Delta Scorpii binary during its recent periastron passage |
2001 |
1723 |
The bright star Delta Sco has been considered a typical B0-type object for many years. Spectra of the star published prior to 1990 showed no evidence of emission, but only of short-term line profile variations attributed to nonradial pulsations. Spec... |
Spectroscopic studies of the unique yellow supergiant a Aqr in the Cepheid instability strip |
2017 |
498 |
Based on 21 spectra with resolutions from 12 000 to 42 000 taken in 1997–2016 for the yellow supergiant a Aqr (which is believed to be nonvariable in the Cepheid instability strip), we have determined its effective temperature Teff and radial velocit... |
Spectroscopic, photometric, and polarimetric study of the Herbig Ae candidate HD36112 |
1999 |
1363 |
We describe observations of the Herbig Ae candidate HD36112 including high-resolution spectroscopy of photospheric and circumstellar lines, multi-colour photometry and polarimetry. These observations reveal that many features of the observational app... |
Spectroscopy and photometry of the emission-line B-type stars AS 78 and MWC 657 |
2000 |
2331 |
We present the results of low- and highresolution
spectroscopic and multicolour photometric
observations of two early-type emission-line stars,
AS 78 and MWC 657. |
Spectroscopy and photometry of V1137 Aql |
2001 |
1144 |
V1137 Aql = SON 8114 was discovered by Hoffmeister (1964), who detected its brightness variations between mpg = 14m.5 and 16m.5. The variability type SR: was assigned to the object in the General Catalogue of Variable Stars (Kholopov et al., 1985). T... |
Spectroscopy of B-type emission-line stars with compact dusty envelopes: HD 85567, Hen 3-140, and Hen 3-1398 |
2001 |
2603 |
We report the results of our spectroscopic observations of three southern emission-line B-type stars associated with IRAS sources, HD 85567, Hen 3-140, and Hen 3-1398, whose nature and evolutionary state are not well-established yet. |
Spectroscopy of the growing circumstellar disk in the Delta Scorpii Be binary |
2003 |
961 |
We present the results of a spectroscopic monitoring program of the binary system Delta Scorpii, whose primary became a Be star after the last periastron encounter in the Summer of 2000. The observations cover a period of 2 years (March 2001–June 200... |
Spectroscopy, MOST photometry, and interferometry of MWC 314: is it an LBV or an interacting binary? |
2016 |
476 |
MWC 314 is a bright candidate luminous blue variable (LBV) that resides in a fairly close binary system, with an orbital period of 60.753 ± 0.003?d. We observed MWC 314 with a combination of optical spectroscopy, broad-band ground- and space-based ph... |
A Study of the B[e] Star AS 160 |
2003 |
1287 |
We present the results of our study of the poorly known B[e] star AS 160 = IRAS 07370– 2438. The high-resolution spectrum obtained with the 6-m BTA telescope exhibits strong emission in the Ha line with a two-component profile, indicating that the ga... |
A Study of the Candidates for Herbig Ae/Be Stars HD 35929 and HD 203024 |
1997 |
1056 |
We carried out photometric observations of the two bright candidates for Herbig Ae/Be stars HD 35929 and HD 203024 over the period 1993-1996 in the wavelength range 0.3-2.5 µm and high-resolution spectroscopic observations of HD 203024. Small near-in... |
A Study of Pi Aquarii During a Quasi-normal Star Phase: Refined Fundamental Parameters and Evidence for Binarity |
2002 |
1455 |
We present the results of recent multicolor photometric and high-resolution spectroscopic observations of the bright Be star Pi Aquarii. Observational data collected from the literature were used to study the star's variations over the last four deca... |
Time-dependent spectral-feature variations of stars displaying the B[e] phenomenon III. HD 50138 |
2016 |
494 |
Context. B[e] stars are anomalous objects around which extended circumstellar matter is present. The observed properties of the central star are significantly affected by the surrounding material. Therefore, the use of standard synthetic spectra is d... |
TYC 3159-6-1: a runaway blue supergiant |
2014 |
1925 |
We report the results of optical spectroscopy of a candidate evolved massive star in the Cygnus-X region, TYC 3159-6-1, revealed via detection of its curious circumstellar nebula in archival data of the Spitzer Space Telescope. We classify TYC 3159-6... |
V699 Cep: A New Binary System with a B[e] Star |
2002 |
2466 |
We present the results of optical and near-IR spectroscopic and broadband multicolour photometric observations of the emission-line object V669 Cep. We find evidence that it contains a hot, low luminosity, B4– B6 star and a cool companion (most likel... |
The vicinity of the galactic supergiant B[e] star CPD -57 2874 from near- and mid-IR long baseline spectro-interferometry with the VLTI (AMBER and MIDI) |
2005 |
1137 |
We present the first spectro-interferometric observations of the circumstellar envelope (CSE) of a B[e] supergiant (CPD -57' 2874), performed with the Very Large Telescope Interferometer (VLTI) using the beam-combiner instruments AMBER (near-IR inter... |
VLTI/ AMBER and VLTI/MIDI spectro-interferometric observations of the B[e] supergiant CPD-57° 2874*: Size and geometry of the circumstellar envelope in the near- and mid-IR |
2005 |
1587 |
We present the first high spatial and spectral observations of the circumstellar envelope (CSE) of a B[e] supergiant (CPD-5't' 2874), performed with the Very Large Telescope Interferometer (VLTI). Spectra, visibilities, and closure phase, were obtain... |
VY Mon - the twin of Z CMa? |
1992 |
1225 |
In 1985-1990 we obtained photometric, polarimetric and spectroscopic observations of the peculiar emission-line star VY Mon. These observational data were compared with those of Z CMa. To our opinion the similarity of the observational features of th... |