2013MNRAS.431.2820L

Query : 2013MNRAS.431.2820L

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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Number of rows : 6
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 V* EF Eri CV* 03 14 13.2526234800 -22 35 42.900077688   15.4 14.53 13.5   DA 453 0
2 V* V379 Vir CV* 12 12 09.3077194872 +01 36 27.771237504           DAH 78 0
3 V* V406 Vir CV* 12 38 13.7337832872 -03 39 32.965818228           DA3e 62 0
4 PM J14332+1011 CV* 14 33 17.7877088088 +10 11 23.484691356     18.86     ~ 60 0
5 HD 133161 PM* 15 02 33.0594755544 +16 03 18.321447024   7.61   6.6   G2V 74 0
6 V* VY Aqr CV* 21 12 09.2515505688 -08 49 36.779664432           ~ 229 0

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