2008MNRAS.388..889U

Query : 2008MNRAS.388..889U

2008MNRAS.388..889U - Mon. Not. R. Astron. Soc., 388, 889-897 (2008/August-1)

GD 552: a cataclysmic variable with a brown dwarf companion ?

UNDA-SANZANA E., MARSH T.R., GANSICKE B.T., MAXTED P.F.L., MORALES-RUEDA L., DHILLON V.S., THOROUGHGOOD T.D., TREMOU E., WATSON C.A. and HINOJOSA-GONI R.

Abstract (from CDS):

GD 552 is a high proper motion star with the strong, double-peaked emission lines characteristic of the dwarf nova class of cataclysmic variable (CV) star, and yet no outburst has been detected during the past 12yr of monitoring. We present spectroscopy taken with the aim of detecting emission from the mass donor in this system. We fail to do so at a level which allows us to rule out the presence of a near-main-sequence star donor. Given GD 552's orbital period of 103 min, this suggests that it is either a system that has evolved through the ∼80-minute orbital period minimum of CV stars and now has a brown dwarf mass donor, or that has formed with a brown dwarf donor in the first place. This model explains the low observed orbital velocity of the white dwarf and GD 552's low luminosity. It is also consistent with the absence of outbursts from the system.

Abstract Copyright: © 2008 The Authors. Journal compilation © 2008 RAS

Journal keyword(s): accretion, accretion discs - binaries: close - binaries: spectroscopic - stars: individual: GD 552

CDS comments: fig. 8 : Field Star B not in Simbad

Simbad objects: 23

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Number of rows : 23
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* HT Cas CV* 01 10 13.1213394144 +60 04 35.489642700     14.10     M5.5e 401 0
2 G 272-61A PM* 01 39 01.3772561114 -17 57 02.587471791           M5.5V 143 0
3 V* TZ Ari PM* 02 00 12.9563198327 +13 03 07.000569241 15.406 14.100 12.298 10.943 9.195 M4.5V 325 0
4 HD 19445 Pe* 03 08 25.5883873084 +26 19 51.400965175 8.29 8.52 8.06 7.60 7.27 G2VFe-3 801 0
5 HD 36395 PM* 05 31 27.3957852161 -03 40 38.024004501 10.626 9.443 7.968 6.996 5.913 M1.5Ve 574 0
6 Ross 47 BY* 05 42 09.2676872099 +12 29 21.604835564 14.264 13.130 11.509 10.298 8.709 M4V 304 0
7 HD 42581 PM* 06 10 34.6149358167 -21 51 52.656352926 10.801 9.607 8.125 7.164 6.121 M1V 544 0
8 HD 50281B ** 06 52 18.0415140183 -05 11 24.042331473   11.47 10.05 9.870   M2.5V 140 0
9 BD+05 1668 PM* 07 27 24.4989685603 +05 13 32.841491057 12.558 11.443 9.872 8.699 7.161 M3.5V 477 0
10 V* Z Cha CV* 08 07 27.7517751528 -76 32 00.665029356           M5.5 620 1
11 G 51-15 PM* 08 29 49.3527921926 +26 46 33.624143059   16.87   14.736   M6.5Ve 326 0
12 LP 666-9 BD* 08 53 36.1604798120 -03 29 32.197505547     18.959 16.781 14.487 M9Ve 274 1
13 SDSS J103533.02+055158.4 CV* 10 35 33.0226966464 +05 51 58.334599512   18.57 18.80     DA 64 0
14 Feige 34 HS* 10 39 36.7358839104 +43 06 09.212615280 9.613 10.91 11.14 11.319 11.464 sdOp 731 0
15 Wolf 359 PM* 10 56 28.9208702274 +07 00 53.003285286 16.706 15.541 13.507 11.684 9.507 dM6 775 0
16 V* MT Com CV* 12 55 10.5637132704 +26 42 26.595387504           ~ 42 0
17 VB 8 LM* 16 55 35.2557374336 -08 23 40.753073075   18.7 16.916 14.566 12.24 M7Ve 457 0
18 BD+45 2743 PM* 18 35 18.3903206545 +45 44 38.539577234   11.26 9.830 9.400 8 M0.5V 161 0
19 HD 180617 PM* 19 16 55.2565688720 +05 10 08.040554168 11.768 10.63 9.115 8.076 6.782 M3-V 475 0
20 VB 10 PM* 19 16 57.6109547886 +05 09 01.600923413     17.30     M8V 499 1
21 UCAC2 28113781 * 20 43 58.4534592120 -10 47 12.253046280 16.506 16.520 15.911 15.544 15.171 ~ 10 0
22 USNO-A2.0 1500-09346766 * 22 50 32.3870206536 +63 29 05.526182400   16.8   15.6   ~ 1 0
23 GD 552 CV* 22 50 39.9583863216 +63 28 38.330366988   16 16.47     D 74 0

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