Query : 2003A&A...402..315M

2003A&A...402..315M - Astronomy and Astrophysics, volume 402, 315-319 (2003/4-4)

Infrared spectroscopy of the supersoft X-ray source MR Vel.


Abstract (from CDS):

We describe the infrared spectrum of the galactic supersoft X-ray source MR Vel (RX J0925.7-4758) in the wavelength range of 1.1-2.6µm. We find Paschen, Brackett, HeI, HeII and neutral and ionized oxygen lines in emission. No traces of the secondary star were found. P-Cygni profiles were observed in Paschen β and Brackett γ, from which we conclude that these lines arise in a wind. Fitting the optical and infrared energy distribution with a supercritical disk model, incorporating white dwarf and secondary star contributions, we were able to constrain the distance to 2-5kpc, which implies an absolute magnitude MV between -2 and 0.

Abstract Copyright:

Journal keyword(s): accretion, accretion disks - stars: emission-line - X-rays: stars - infrared: stars - stars: individual: MR Vel

Simbad objects: 2

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Number of rows : 2
N Identifier Otype ICRS (J2000)
ICRS (J2000)
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024
1 RX J0925.7-4758 XB* 09 25 46.0017018216 -47 58 17.340963384   19.2       ~ 89 0
2 HD 216009 * 22 49 51.1525462440 -44 25 24.746394576   8.11 8.06     A0V 40 0

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