SIMBAD references

2013MNRAS.431.2820L - Mon. Not. R. Astron. Soc., 431, 2820-2825 (2013/May-3)

A J-band detection of the sub-stellar mass donor in SDSS J1433+1011.

LITTLEFAIR S.P., SAVOURY C.D.J., DHILLON V.S., MARSH T.R., GANSICKE B.T., BUTTERLEY T., WILSON R.W., SOUTHWORTH J. and WATSON C.A.

Abstract (from CDS):

We present time-resolved J-band spectroscopy of the short-period cataclysmic variable SDSS J143317.78+101123.3. We detect absorption lines from the sub-stellar donor star in this system, which contributes 38±5 percent to the J-band light. From the relative strengths of the absorption lines in the J band, we estimate the spectral type of the donor star to be L2±1. These data are the first spectroscopic detection of a donor with a confirmed sub-stellar mass in a cataclysmic variable, and the spectral type is consistent with that expected from semi-empirical evolutionary models.

Using skew mapping, we have been able to derive an estimate for the radial velocity of the donor of Kd = 520±60 km s-1. This value is consistent with, though much less precise than, predictions from mass determinations found via photometric fitting of the eclipse light curves.


Abstract Copyright: © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2013)

Journal keyword(s): binaries: eclipsing - stars: dwarf novae - stars: individual: SDSS J1433+1011 - novae, cataclysmic variables

CDS comments: SDSS J123813.73+033933.0 is a misprint for SDSS J123813.73-033933.0 ; SDSS J1212 is SDSS J121209.30+013627.7.

Simbad objects: 6

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