2005A&A...440.1087N


C.D.S. - SIMBAD4 rel 1.7 - 2021.04.14CEST00:25:57

2005A&A...440.1087N - Astronomy and Astrophysics, volume 440, 1087-1095 (2005/9-4)

Binaries discovered by the SPY project. IV. Five single-lined DA double white dwarfs.

NELEMANS G., NAPIWOTZKI R., KARL C., MARSH T.R., VOSS B., ROELOFS G., IZZARD R.G., MONTGOMERY M., REERINK T., CHRISTLIEB N. and REIMERS D.

Abstract (from CDS):

We present results from our ongoing follow-up observations of double white dwarf binaries detected in the ESO SN Ia Progenitor SurveY (SPY). We discuss our observing strategy and data analysis and present the orbital solutions of five close double white dwarf binaries: HE 0320-1917, HE 1511-0448, WD 0326-273, WD 1013-010 and WD 1210+140. Their periods range from 0.44 to 3.22 days. In none of these systems we find any spectral lines originating from the companion. This rules out main sequence companions and indicates that the companion white dwarfs are significantly older and cooler than the bright component. Infrared photometry suggests the presence of a cool, helium-rich white dwarf companion in the binary WD 0326-273. We briefly discuss the consequences of our findings for our understanding of the formation and evolution of double white dwarfs.

Abstract Copyright:

Journal keyword(s): stars: binaries: close - stars: supernovae: general - stars: 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 - 2021
#notes
1 LAWD 10 WD* 01 37 59.3936600367 -04 59 44.670036387   13.20 12.83 12.8   DA+D1 168 0
2 GD 420 WD* 01 41 21.6192053869 +77 09 00.729828673   14.91   15.0   DA3.0 38 1
3 PHL 4402 WD* 03 22 31.9319547621 -19 06 48.120745174   16.9   16.0   DA 9 0
4 LP 888-63 LM* 03 28 48.4450963435 -27 19 04.605183870   15.6 13.80     M3 26 0
5 LAWD 14 WD* 03 28 48.7985358267 -27 19 00.094462182   14.0 13.56     DA5.4 69 1
6 WG 15 WD* 09 58 54.9416147649 -66 53 10.181253441   14.40 14.60     DA1.8 56 0
7 EGGR 253 WD* 10 16 06.8735956550 -01 19 17.135702214   15.63 15.37     DA6.1 35 2
8 PG 1022+050 WD* 10 24 59.8259661630 +04 46 10.498562889   14.37 14.20 14.2   DA3.5 48 0
9 Ton 1323 WD* 11 04 32.5722911355 +36 10 48.873727889   14.76 14.49     DA3.7 61 0
10 HS 1102+0934 WD* 11 04 36.7497952829 +09 18 22.838791584   16.9   16.5   DA 19 0
11 GD 127 WD* 11 05 15.3078358736 +00 16 26.175131256   15.43   15.3   DA3.5 31 0
12 PG 1115+166 WD* 11 17 55.1073902494 +16 21 29.254318197   15.16       DA+DB 37 0
13 Feige 55 WD* 12 04 38.5356512387 +60 32 08.086450892 11.974 13.224 13.568 13.717 13.896 DAO.9 76 0
14 PG 1204+451 WD* 12 06 47.5414819052 +44 49 54.412957480   14.61 14.37 13.9   DA2.1 35 0
15 PG 1210+141 WD* 12 12 33.8814925363 +13 46 24.899362825   14.38 14.71 14.9   DA1.6 23 1
16 PG 1241-010 WD* 12 44 28.5728314003 -01 18 57.853501507   13.86 14.00 14.3   DA2.1 49 0
17 EGGR 188 WD* 13 19 13.7222973484 +45 05 09.808706255   14.16   14.3   DA3.6 56 0
18 PG 1349+144 WD* 13 51 53.9034400121 +14 09 45.464525941   15.40 14.77 15.0   DA2.9 27 1
19 HE 1414-0848 WD* 14 16 51.9614082580 -09 02 02.739838420   16.13   16.04 15.76 DA+DA 21 0
20 PG 1428+374 WD* 14 30 42.6127365853 +37 10 15.315129457   14.90 15.6     DA3.4 39 0
21 PG 1511-048 HS* 15 14 12.9637843914 -04 59 33.316062740   15.16 15.42 15.84   sdB 14 0
22 EGGR 576 WD* 17 05 30.9713933188 +48 03 10.272765889   13.87 13.80     DA3.6 43 1
23 Wolf 665 WD* 17 15 34.8628491650 +33 13 03.893935756   14.43   14.7   DA2.2 62 0
24 Ross 137 WD* 18 27 13.0872422364 +04 03 46.792534528 13.383 13.981 13.889 13.928 13.958 DA+DC 73 0
25 HD 188112 HS* 19 54 31.4192112333 -28 20 20.679022097   10.01 10.22     sdB 82 0
26 GD 231 WD* 20 35 13.8114634080 +18 59 21.701796029   15.30 15.34 16.2   DA2.6 46 1
27 LP 759-50 WD* 22 12 17.9588441166 -14 29 45.976979818 14.76 15.32 15.09 15.2   DA+DA 27 0
28 GD 251 WD* 23 34 20.8685992298 +29 18 37.193228381 14.560 15.563 15.745 15.813 15.981 DA1.8 46 1

    Equat.    Gal    SGal    Ecl

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2021.04.14-00:25:57

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