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A grid of NLTE corrections for magnesium and calcium in late-type giant and supergiant stars: application to Gaia
formation radiative transfer stars late-type atmospheres abundances
2011/10/18
We investigate NLTE effects for magnesium and calcium in the atmospheres of late-type giant and supergiant stars. The aim of this paper is to provide a grid of NLTE/LTE equivalent width ratios W/W* of...
XMM-Newton observations of the supergiant fast X-ray transients XTEJ1739-302, IGRJ08408-4503 and IGRJ18410-0535
XMM-Newton supergiant X-ray transients XTEJ1739-302 IGRJ08408-4503 IGRJ18410-0535
2011/9/26
We report here on the XMM-Newton observations of the three supergiant fast X-ray transients (SFXT) XTE J1739-302, IGRJ08408-4503, and IGRJ18410-0535. For the latter source we only discuss some prelimi...
XMM-Newton observations of the supergiant fast X-ray transients XTEJ1739-302, IGRJ08408-4503 and IGRJ18410-0535
XMM-Newton X-ray supergiant fast
2011/8/24
We report here on the XMM-Newton observations of the three supergiant fast X-ray transients (SFXT) XTE J1739-302, IGRJ08408-4503, and IGRJ18410-0535. For the latter source we only discuss some prelimi...
High spatial resolution monitoring of the activity of BA supergiant winds
High spatial resolution the activity BA supergiant winds
2011/1/13
There are currently two optical interferometry recombiners that can provide spectral resolutions better than 10000, AMBER/VLTI operating in the H-K bands, and VEGA/CHARA, recently commissioned, opera...
Orbital parameters of supergiant fast X-ray transients
X-rays binaries – Stars neutron – Stars supergiants – Accretion accretion disks
2010/11/15
Context. Super giant fast X-ray transient (SFXT) is a new class of the high mass X-ray binary that shows short X-ray flares. The physical mechanism of SFXT short flares is still open for discussion. T...
Images of unclassified and supergiant B[e] stars disks with interferometry
techniques high angular resolution – techniques interferometric – binaries close– stars
2010/11/16
B[e] stars are among the most peculiar objects in the sky. This spectral type, characterised
by allowed and forbidden emission lines, and a large infrared excess, does not represent an
homogenous cl...
IGR J16328-4726: a new candidate Supergiant Fast X-ray Transient
High Energy Astrophysical Phenomena (astro-ph.HE)
2011/1/7
The unidentified source IGR J16328-4726 was covered with INTEGRAL observations for a long period (~9.8Ms) and was undetectable for most of the time while showing a very recurrent micro-activity with a...
LyngA 1, A Small Open Cluster Containing a Red-Supergiant Member
Open Cluster Red-Supergiant Member
2009/6/16
LyngA 1, A Small Open Cluster Containing a Red-Supergiant Member。