2015MNRAS.447..691P

Query : 2015MNRAS.447..691P

2015MNRAS.447..691P - Mon. Not. R. Astron. Soc., 447, 691-697 (2015/February-2)

Discovery of ZZ Cetis in detached white dwarf plus main-sequence binaries.

PYRZAS S., GANSICKE B.T., HERMES J.J., COPPERWHEAT C.M., REBASSA-MANSERGAS A., DHILLON V.S., LITTLEFAIR S.P., MARSH T.R., PARSONS S.G., SAVOURY C.D.J., SCHREIBER M.R., BARROS S.C.C., BENTO J., BREEDT E. and KERRY P.

Abstract (from CDS):

We present the first results of a dedicated search for pulsating white dwarfs (WDs) in detached WD plus main-sequence (MS) binaries. Candidate systems were selected from a catalogue of WD+MS binaries, based on the surface gravities and effective temperatures of the WDs. We observed a total of 26 systems using ULTRACAM mounted on ESO's 3.5 m New Technology Telescope at La Silla. Our photometric observations reveal pulsations in seven WDs of our sample, including the first pulsating WD with an MS companion in a post-common envelope (CE) binary, SDSS J1136+0409. Asteroseismology of these new pulsating systems will provide crucial insight into how binary interactions, particularly the CE phase, affect the internal structure and evolution of WDs. In addition, our observations have revealed the partially eclipsing nature of one of our targets, SDSS J1223-0056.

Abstract Copyright: © 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2014)

Journal keyword(s): asteroseismology - binaries: close - binaries: eclipsing - stars: low-mass - white dwarfs

Simbad objects: 28

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Number of rows : 28
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 GALEX J001726.6-002449 WD* 00 17 26.6348887072 -00 24 51.475678762           DA+dMe 16 0
2 GALEX J002157.9-110331 WD* 00 21 57.9085845240 -11 03 31.611384504           DA+M4 11 0
3 GALEX J005208.3-005134 WD* 00 52 08.4284616336 -00 51 34.651603080           DA+dMe 18 0
4 GALEX J011123.8+000935 WD* 01 11 23.9144080176 +00 09 34.493125068           DA+M 21 0
5 GALEX J012403.1-002300 WD* 01 24 03.1206752568 -00 23 01.183009632           DA+dM 10 0
6 SDSS J020351.29+004025.1 ** 02 03 51.2915781048 +00 40 25.034793636           DA+dM 15 0
7 GALEX J021239.4+001856 WD* 02 12 39.4570480536 +00 18 56.986986636           DA+dM 13 0
8 GALEX J021849.9+005739 WD* 02 18 49.9827391752 +00 57 39.317436072           DA+M 9 0
9 SDSS J025509.30-004414.9 ** 02 55 09.30528 -00 44 14.9352           DA+dMe 10 0
10 GALEX J032758.1-002215 WD* 03 27 58.1588416176 -00 22 15.448148436           DA+dM 14 0
11 GALEX J032842.9+001749 WD* 03 28 42.9297693600 +00 17 49.742927880           DA+dM 18 0
12 GALEX J033656.1-004727 WD* 03 36 56.1371973480 -00 47 27.985932384           DA+M5 12 0
13 GALEX J034514.7-061421 WD* 03 45 14.7191550912 -06 14 21.233865876           DA+M2 7 0
14 GALEX J082429.0+172345 WD* 08 24 29.0525840976 +17 23 45.429818928           DA+dMe 9 0
15 V* RY LMi WD* 09 24 15.2482279632 +35 16 51.401570556   15.72   15.99   DA4 268 0
16 SDSS J104358.59+060320.9 WD* 10 43 58.5935688504 +06 03 21.059367372           DA+M 15 0
17 GALEX J105436.2+100837 WD* 10 54 36.1890554208 +10 08 37.226728104           DA+M 6 0
18 GALEX J111710.5-125540 WD* 11 17 10.5534052056 -12 55 41.063003256           DA+M3 4 0
19 SDSS J113655.18+040952.6 WD* 11 36 55.1800730112 +04 09 52.730905968   16.79 17.12     DA+M 28 0
20 GALEX J122339.5-005630 WD* 12 23 39.6079953768 -00 56 31.216473528           DA+M6 24 0
21 GALEX J122850.4-022509 WD* 12 28 50.4682750272 -02 25 09.447145788           DA+K 6 0
22 GALEX J132933.6+255743 WD* 13 29 33.6862675416 +25 57 43.298942184           DA+dMe 7 0
23 GALEX J145305.7+001048 WD* 14 53 05.7726566856 +00 10 48.266126508           DA+M4 8 0
24 V* GW Lib No* 15 19 55.3333785336 -25 00 24.614534520           ~ 211 0
25 GALEX J152033.4+063443 WD* 15 20 33.4332022680 +06 34 43.156719264           DA+M4 7 0
26 GALEX J161505.5+235746 WD* 16 15 05.5152643728 +23 57 46.345150044           DA+M 6 0
27 GALEX J165240.7+134014 WD* 16 52 40.7488042392 +13 40 15.105919728           DA+M 2 0
28 GALEX J172445.2+073322 WD* 17 24 45.2846351280 +07 33 24.941067264           DA+M4 5 0

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