Astrophysics and Space Science, v. 286, n. 1-2, p. 225-236, 2003. http://dx.doi.org/10.1023/A:1026192430884
-
2003 (v1)Journal articleUploaded on: December 3, 2022
-
2003 (v1)Journal article
Using the SIMECA code developed by Stee & Araùjo (1994); Stee et al. (1995) for Be stars we obtain a correlation between the mass loss ratesṀ and the Brγ continuum luminosity as a function of the opening angle of the disk. We show that this correlation is similar to those obtained by Scuderi et al. (1998) for O-B supergiants. We found that the...
Uploaded on: December 4, 2022 -
2004 (v1)Journal article
The Astrophysical Journal, v. 602, p. 978-984, 2004. http://dx.doi.org/10.1086/381141
Uploaded on: December 3, 2022 -
2003 (v1)Journal article
Astrophysics and Space Science, v. 286, n. 1-2, p. 291-296, 2003. http://dx.doi.org/10.1023/A:1026193924949
Uploaded on: December 3, 2022 -
February 2013 (v1)Journal article
Context. HD 110432 was classified as a "γ Cas X-ray analog" since it has similar peculiar X-ray and optical characteristics, i.e. a hard-thermal X-ray variable emission and an optical spectrum affected by an extensive disk. It might be a Be star harboring an accreting white dwarf or that the X-rays may come from an interaction between the...
Uploaded on: December 3, 2022 -
February 2013 (v1)Journal article
Context. Classical Be stars are hot non-supergiant stars surrounded by a gaseous circumstellar disk that is responsible for the observed infrared (IR) excess and emission lines. The influence of binarity on these phenomena remains controversial.Aims. We followed the evolution of the environment surrounding the binary Be star δ Scorpii one year...
Uploaded on: December 3, 2022 -
2007 (v1)Conference paper
SF2A-2007: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics, eds. J. Bouvier, A. Chalabaev and C. Charbonnel, n/a, p. 489 (2007)
Uploaded on: December 4, 2022 -
February 2016 (v1)Journal article
International audience
Uploaded on: December 3, 2022 -
2006 (v1)Journal article
Astronomy and Astrophysics, v. 450, p. 181-192, 2006. http://dx.doi.org/10.1051/0004-6361:20054300
Uploaded on: December 3, 2022 -
2010 (v1)Conference paper
This paper presents the current status of the VEGA (Visible spEctroGraph and polArimeter) instrument installed at the coherent focus of the CHARA Array, Mount Wilson CA. Installed in september 2007, the first science programs have started during summer 2008 and first science results are now published. Dedicated to high angular (0.3mas) and high...
Uploaded on: December 3, 2022 -
February 10, 2016 (v1)Journal article
International audience
Uploaded on: December 3, 2022 -
2013 (v1)Journal article
Aims: We study the inner sub-AU region of the circumstellar environment of the UX Ori-type star KK Oph with near-infrared VLTI/AMBER interferometry. We are particularly interested in the inclination of the star-disk system, and we use this information to test the current standard picture for UX Ori stars. Methods: We recorded spectrally...
Uploaded on: December 3, 2022 -
June 2010 (v1)Journal article
Context. A crucial issue in star formation is to understand the physical mechanism by which mass is accreted onto and ejected bya young star. To derive key constraints on the launching point of the jets and on the geometry of the winds, the visible spectro-polarimeter VEGA installed on the CHARA optical array can be an efficient means of...
Uploaded on: December 3, 2022 -
May 2005 (v1)Journal article
We present the first VLTI/MIDI observations of the Be star alpha Ara (HD 158 427), showing a nearly unresolved circumstellar disk in the N band. The interferometric measurements made use of the UT1 and UT3 telescopes. The projected baselines were 102 and 74 meters with position angles of 7 ° and 55°, respectively. These measurements put an...
Uploaded on: December 4, 2022 -
May 2005 (v1)Journal article
We present the first VLTI/MIDI observations of the Be star alpha Ara (HD 158 427), showing a nearly unresolved circumstellar disk in the N band. The interferometric measurements made use of the UT1 and UT3 telescopes. The projected baselines were 102 and 74 meters with position angles of 7 ° and 55°, respectively. These measurements put an...
Uploaded on: February 22, 2023 -
July 2013 (v1)Journal article
International audience
Uploaded on: December 3, 2022 -
July 13, 2010 (v1)Journal article
BA-type supergiants are amongst the most optically-bright stars. They are observable in extragalactic environments, hence potential accurate distance indicators. Emission activity in the Halpha line of the BA supergiants Rigel (B8Ia) and Deneb (A2Ia) is indicative of presence of localized time-dependent mass ejections. Here, we employ optical...
Uploaded on: December 3, 2022 -
November 17, 2021 (v1)Journal article
International audience
Uploaded on: February 22, 2023 -
November 17, 2021 (v1)Journal article
International audience
Uploaded on: December 3, 2022