109 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of MichiganUS36 papers
- University of Tennessee at KnoxvilleUS33 papers
- Georgia State UniversityUS31 papers
- University of Colorado BoulderUS30 papers
- University of Massachusetts AmherstUS29 papers
- Brookhaven National LaboratoryUS28 papers
- Centre National de la Recherche ScientifiqueFR28 papers
- Charles UniversityCZ28 papers
- New Mexico State UniversityUS28 papers
- Vanderbilt UniversityUS28 papers
- Augustana UniversityUS27 papers
- Columbia UniversityUS27 papers
40 papers · 1 filter
Investigation of the Nature of the B[e] Star CI Cam in the Optical Range
E. A. Barsukova, A. N. Burenkov, V. P. Goranskij +10
We report the results of 24 years of photometric and spectroscopic monitoring of CI Cam since its outburst in 1998. In the early years of our research, we identified a system compo…
FU Orionis disk outburst: evidence for a gravitational instability scenario triggered in a magnetically dead zone
G. Bourdarot, J-P. Berger, G. Lesur +10
Context: FUors outbursts are a crucial stage of accretion in young stars. However a complete mechanism at the origin of the outburst still remains missing. Aims: We aim at constrai…
Instability in the system of the distant post-AGB star LS III+52 24 (IRAS 22023+5249)
V. G. Klochkova, A. S. Miroshnichenko, V. E. Panchuk +2
The optical spectra of the B-supergiant LS III+52 24 (IRAS 22023+5249) obtained at the 6-meter telescope BTA with a resolution R60000 in 2010-2021 revealed signs of wind varia…
First detection of a magnetic field in low-luminosity B[e] stars: New scenarios for the nature and evolutionary stages of FS CMa stars
D. Korcakova, F. Sestito, N. Manset +8
We report the first detection of the magnetic field in a star of FS CMa type, a subgroup of objects characterized by the B[e] phenomenon. The split of magnetically sensitive lines…
Outbursts and stellar properties of the classical Be star HD 6226
Noel D. Richardson, Olivier Thizy, Jon E. Bjorkman +58
The bright and understudied classical Be star HD 6226 has exhibited multiple outbursts in the last several years during which the star grew a viscous decretion disk. We analyze 659…
Properties of Galactic B[e] Supergiants: V. 3 Pup -- constraining the orbital parameters and modeling the circumstellar environments
A. S. Miroshnichenko, S. Danford, S. V. Zharikov +9
We report the results of a long-term spectroscopic monitoring of the A-type supergiant with the B[e] phenomenon 3 Pup = HD 62623. We confirm earlier findings that it is a binary sy…
A triple star system with a misaligned and warped circumstellar disk shaped by disk tearing
Stefan Kraus, Alexander Kreplin, Alison K. Young +29
Young stars are surrounded by a circumstellar disk of gas and dust, within which planet formation can occur. Gravitational forces in multiple star systems can disrupt the disk. The…
Irregular dust features around intermediate-mass young stars with GPI: signs of youth or misaligned disks?
Anna S. E. Laws, Tim J. Harries, Benjamin R. Setterholm +14
We are undertaking a large survey of over thirty disks using the Gemini Planet Imager (GPI) to see whether the observed dust structures match spectral energy distribution (SED) pre…
Toward Understanding the B[e] Phenomenon. VII. AS 386, a single-lined binary with a candidate black hole component
S. A. Khokhlov, A. S. Miroshnichenko, S. V. Zharikov +24
We report the results of spectroscopic and photometric observations of the emission-line object AS 386. For the first time, we found that it exhibits the B[e] phenomenon and fits t…
Intriguing X-ray and optical variations of the gamma Cas analog HD45314
G. Rauw, Y. Nazé, M. A. Smith +11
A growing number of Be and Oe stars, named the gamma Cas stars, are known for their unusually hard and intense X-ray emission. This emission could either trace accretion by a compa…
IGR J19552+0044: A new asynchronous short period polar: "Filling the gap between intermediate and ordinary polars"
G. Tovmassian, D. Gonzalez-Buitrago, J. Thorstensen +23
Based on XMM--Newton X-ray observations IGR J19552+0044 appears to be either a pre-polar or an asynchronous polar. We conducted follow-up optical observations to identify the sourc…
The remarkable outburst of the highly evolved post-period-minimum dwarf nova SSS J122221.7-311525
V. V. Neustroev, T. R. Marsh, S. V. Zharikov +22
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 quies…
Towards Understanding The B[e] Phenomenon: VI. Nature and Spectral Variations of HD 85567
S. A. Khokhlov, A. S. Miroshnichenko, R. Mennickent +7
We report the results of high-resolution () spectroscopic observations of the emission-line object HD 85567, which has been classified as a FS CMa type object or a p…
Effective temperature and radial velocity of the small-amplitude Cepheid Polaris (alpha UMi) in 2015
I. A. Usenko, V. V. Kovtyukh, A. S. Miroshnichenko +1
We present the results of an analysis of 21 spectra of alpha UMi (Polaris) obtained in September - December 2015. Frequency analysis shows an increase of the pulsation period up to…
Long orbital period pre-polars containing an early K-type donor stars. Bottleneck accretion mechanism in action
G. Tovmassian, D. Gonzalez-Buitrago, S. Zharikov +6
We studied two objects identified as a Cataclysmic Variables (CVs) with periods exceeding the natural boundary for Roche lobe filling ZAMS secondary stars. We present observational…
Hypergiant V1302 Aql in 2001-2014
Klochkova Valentina, Chentsov Eugene, Miroshnichenko Anatoly +2
We present the results of a study of spectral features and the velocity field in the atmosphere and the circumstellar envelope of the hypergiant V1302 Aql, the optical counterpart…
Time-dependent spectral-feature variations of stars displaying the B[e] phenomenon III. HD 50138
T. Jeřábková, D. Korčáková, A. Miroshnichenko +8
We analyse spectroscopic observations of the B[e] star HD 50138 (MWC 158, V743 Mon, or IRAS 06491-0654), a member of the FS CMa group, obtained over the last twenty years. Four dif…
Interpreting the spectral behavior of MWC 314
A. Frasca, A. S. Miroshnichenko, C. Rossi +4
MWC 314 is one of the most luminous stars in the Milky Way. Its fundamental parameters are similar to those of LBVs, although no large photometric variations have been recorded. We…
H line as an indicator of envelope presence around the Cepheid Polaris Aa ()
I. A. Usenko, A. S. Miroshnichenko, V. G. Klochkova +1
We present the results of the radial velocity () measurements of metallic lines as well as H (H) obtained in 55 high-resolution spectra of the Cepheid UMi (Polaris…
Spectroscopy, MOST Photometry, and Interferometry of MWC 314: Is it an LBV or an interacting binary?
Noel D. Richardson, Anthony F. J. Moffat, Raphaël Maltais-Tariant +34
MWC 314 is a bright candidate luminous blue variable that resides in a fairly close binary system, with an orbital period of 60.7530.003 d. We observed MWC 314 with a combinat…
FS CMa type binaries
Anatoly Miroshnichenko, Sergey Zharikov
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…
Toward Understanding The B[e] Phenomenon: V. Nature and Spectral Variations of the MWC 728 Binary System
A. S. Miroshnichenko, S. V. Zharikov, S. Danford +8
We report the results of a long-term spectroscopic monitoring of the FS\,CMa type object MWC\,728. We found that it is a binary system with a B5 Ve (T = 140001000…
A Coordinated X-ray and Optical Campaign of the Nearest Massive Eclipsing Binary, delta Orionis Aa: III. Analysis of Optical Photometric MOST and Spectroscopic (Ground Based) Variations
Herbert Pablo, Noel D. Richardson, Anthony F. J. Moffat +44
We report on both high-precision photometry from the MOST space telescope and ground-based spectroscopy of the triple system delta Ori A consisting of a binary O9.5II+early-B (Aa1…
Confirmation of the Luminous Blue Variable status of MWC 930
A. S. Miroshnichenko, N. Manset, S. V. Zharikov +14
We present spectroscopic and photometric observations of the emission-line star MWC 930 (V446 Sct) during its long-term optical brightening in 2006--2013. Based on our earlier data…