2007MNRAS.379.1123R

Query : 2007MNRAS.379.1123R

2007MNRAS.379.1123R - Mon. Not. R. Astron. Soc., 379, 1123-1132 (2007/August-2)

The first extensive search for sdO pulsators.

RODRIGUEZ-LOPEZ C., ULLA A. and GARRIDO R.

Abstract (from CDS):

O-type hot subdwarf (sdO) stars are evolved objects linking the asymptotic giant branch and extended horizontal branch phases with the dying low-mass white dwarfs. However, their exact evolutionary state and inner structure has not yet been constrained. Our aim was to discover possible sdO pulsators, so that asteroseismologic techniques could be used to unveil their inner structure and evolutionary state. We performed fast CCD photometry in search of pulsators within a sample of 56 sdOs in the Northern and Southern hemispheres during the period 2003-2006. We obtained two very promising sdO pulsator candidates that remain to be confirmed due to the low amplitude of their oscillations.

Abstract Copyright: 2007 The Authors. Journal compilation © 2007 RAS

Journal keyword(s): stars: oscillations - stars: variables: other

Simbad objects: 65

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Number of rows : 65
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 HE 0010-3449 HS? 00 12 36.9583137888 -34 33 08.485500024   16.01 16.24 16.29 16.64 ~ 3 0
2 LB 1558 HS* 00 30 16.9826389224 -46 32 21.522914088 12.861 14.078 14.376 14.524 14.736 sdOHe 18 0
3 PG 0039+135 HS* 00 42 16.5728962920 +13 45 40.488219324   12.05       sdOC7VIIHe40 23 1
4 HS 0110+3222 HS* 01 12 54.0854863464 +32 38 02.066846748   15.81 16.06 16.85 16.08 sdO 9 0
5 LB 1598 HS* 01 21 38.0961880152 -55 32 20.852945916   11.73 11.95     sdOHe 10 0
6 JL 251 RR* 01 32 12.6819329928 -49 33 40.459097628   14.152 14.394 14.551   ~ 11 0
7 SB 705 HS* 01 43 07.5025062696 -38 33 16.234110648   12.97 13.01     sdOC7.5VIIHe40 25 0
8 BD+37 443 * 01 58 36.3005184504 +38 29 51.927228312   10.71 9.58     K0III 11 0
9 Feige 19 HS* 02 10 54.2120517144 +01 47 47.181644808   13.4 13.57     sdO9VIIHe39 29 1
10 PG 0217+155 HS* 02 20 35.6035638816 +15 44 06.919456488   15.08       sdOB 15 0
11 PG 0226+151 HS* 02 28 49.7371767048 +15 20 34.412820072   16.1   16.4   sdOC 13 0
12 PG 0231+051 WD* 02 33 41.3574299856 +05 18 43.649856216 14.562 15.776 16.096 16.267 16.639 DAO.6 148 0
13 Feige 26 HS* 02 40 04.3980894912 +03 55 42.252865248   13.75 14.10     sdO 25 0
14 HE 0302-3328 HS? 03 04 34.5036457440 -33 17 08.516377500   15.21 15.43 16.28   ~ 3 0
15 PG 0310+149 HS* 03 13 37.1755354608 +15 06 21.265349004   15.36       sdO 21 0
16 HZ 3 HS* 03 53 31.3273180776 +10 45 04.059158544   12.8 12.86     sdO6He 23 0
17 Ton S 403 HS* 04 09 49.7007993264 -28 20 03.172790148 11.55 12.70 12.98     sdB 16 0
18 BPS CS 22182-0037 HS* 04 29 10.7264234400 -29 02 48.061284216 12.55 13.79 14.10     sdO8.5VIHe39 13 0
19 BPS CS 29520-0048 HS* 04 37 34.0677609984 -61 57 43.117648704 13.11 14.325 14.567 15.030   sdOC9VIIHe39 9 0
20 EC 04399-1826 HS* 04 42 08.2823378376 -18 20 54.704386392 12.80 14.07 14.28 14.61 14.80 sdOHe 7 0
21 HZ 1 HS* 04 50 13.5220981656 +17 42 06.198493500   12.601 12.661     sdOHe 42 0
22 LS V +22 38 s*b 06 16 13.3274391960 +22 45 48.779291448 11.69 11.775 10.726 10.450   B0.2III: 28 1
23 HS 0657+5333 HS* 07 01 23.2174101504 +53 29 37.936381200   14.72 14.96 15.41   sdOHe 10 0
24 HS 0659+5734 HS? 07 03 49.6213475976 +57 30 02.986742952   15.31 15.49 15.90 15.66 ~ 3 0
25 HS 0735+4026 HS* 07 38 56.9878523280 +40 19 42.048056568   16.237 16.553     sdO 17 0
26 HS 0736+3953 HS* 07 40 02.9851940880 +39 46 33.007191780           sdOHe 13 0
27 KUV 07596+4123 HS* 08 02 59.8050856152 +41 14 38.042876148   15.156 15.370 15.748   sdOBHe+F8V 24 0
28 BD+75 325 HS* 08 10 49.4903003712 +74 57 57.931973676 8.002 9.23 9.50 9.698 9.884 sdO5 253 0
29 PG 0836+619 HS* 08 40 44.0046423168 +61 47 52.046055276   14.12 14.35 14.68   sdO 14 0
30 Ton 349 HS* 08 47 18.9284781552 +23 00 30.367247940   15.04 15.39 15.81   sdOB 16 0
31 PG 0909+276 HS* 09 12 51.6607835328 +27 20 31.396804260   11.92 12.10 12.62   sdB0.5VIIHe19 42 1
32 Ton 14 HS* 09 23 13.3874125392 +29 26 58.336575468   14.50 14.73 15.05   sdOA 28 0
33 Ton 414 HS* 09 24 40.0702074072 +30 50 12.594990696   14.6 14.73     sdBN0VIIHe35 28 0
34 PG 1020+695 HS* 10 23 58.6407193944 +69 11 45.151783224     14.69     sdOB 14 1
35 Feige 34 HS* 10 39 36.7358839104 +43 06 09.212615280 9.613 10.91 11.14 11.319 11.464 sdOp 679 0
36 PG 1038+510 HS* 10 41 23.1384101040 +50 44 20.155602444   14.82 15.31     sdOHe 21 0
37 PG 1102+499 HS* 11 05 23.1629857152 +49 34 59.707344468   14.09 14.29 14.56   sdOB 16 0
38 PG 1134+463 HS* 11 37 30.8814622704 +46 00 06.259987620   14.90 15.14 15.58   sdOHe 19 0
39 HS 1203+6650 HS* 12 06 26.5491349464 +66 33 52.450945812   15.854 16.025     sdO 16 0
40 BD+18 2647 HS* 12 41 51.7899961800 +17 31 19.750566756 10.261 11.70 11.63 11.969 12.159 sdOpec 181 1
41 Ton 143 HS* 13 03 46.6257490224 +26 46 30.548073504   15.47 15.710 15.96   sdOHe 37 0
42 PG 1401+289 HS* 14 03 17.1411012000 +28 39 29.347737408   14.87       sdOC7VIIHe40 21 0
43 V* V361 Hya HS* 14 05 33.018072 -27 01 34.01328   15.446 15.258 15.161   sdB+ 123 0
44 PG 1427+196 HS* 14 29 27.7632629472 +19 21 36.625603932   13.89 14.12 14.49   sdOC 18 1
45 HD 128220 SB* 14 35 15.7845026736 +19 12 54.526317408   8.724 8.503     G0IIIn+sdO 120 0
46 HS 1522+6615 WD* 15 22 56.6956117920 +66 04 42.031760016   16.4       DO 25 0
47 PG 1528+029 HS* 15 30 56.3326280112 +02 42 22.594057920   15.24 15.42 15.82   sdO8VIIHe40 16 0
48 PG 1534-018 HS* 15 37 33.8231874960 -02 00 21.914190684   14.90 15.01 15.58   sdOC6.5VIIHe40 14 0
49 Ton 803 HS* 15 46 09.0104137296 +25 07 40.746937656   13.884 14.082 14.457   sdOBHe 19 0
50 V* V499 Ser HS* 16 00 43.6054435536 +07 48 02.886625548           sdOHe 30 0
51 PG 1624+382 HS* 16 26 16.7175806904 +38 07 10.476260724   15.49 15.73 16.14   sdOC 22 0
52 PG 1638+676 HS* 16 38 43.7420783520 +67 28 08.365475028   15.68 15.97 16.52   sdOC 12 1
53 PG 1708+614 HS* 17 08 40.6126017144 +61 17 46.495800024     14.4     sdOC 18 0
54 PG 1716+426 HS* 17 18 03.8584522800 +42 34 12.562847292   13.69 13.97     sdB2VIIHe3 114 0
55 HS 1736+5521 HS* 17 37 23.8209101160 +55 20 16.100707380   14.82 14.95 15.50   sdOHe 8 0
56 BD+39 3226 HS* 17 46 31.9115217336 +39 19 09.070120164   9.89 10.18     sdOHe 42 0
57 HS 1753+6911 HS* 17 53 24.6090009408 +69 10 57.476440560     15.46     sdO 11 0
58 HS 1808+5647 HS? 18 09 44.3606605344 +56 48 13.208988168   15.42 15.63 15.85 15.66 ~ 3 0
59 HS 1832+6955 HS? 18 32 17.1541178184 +69 57 50.029973640   13.86 14.13 14.57   ~ 4 0
60 HS 1939+6728 HS? 19 39 32.5253259936 +67 35 22.148713968       15.203   ~ 3 0
61 HS 2108+1413 HS* 21 10 41.3926502376 +14 25 58.928363256   14.04 14.03 14.99   sdOHe 11 0
62 BD+25 4655 HS* 21 59 41.9748629928 +26 25 57.403455672 8.27 9.39 9.68     sdO6 118 0
63 PG 2215+151 HS* 22 17 48.2204437248 +15 20 57.376954320   14.34 14.53 14.79   sdOC9VIIHe40 20 0
64 HE 2347-4130 HS* 23 50 19.7137825608 -41 14 01.174503372   15.16       sdO8VIIHe39 10 0
65 SB 933 HS* 23 59 09.8715626688 -40 33 19.772361360   13.93 14.18 14.63   sdO5He4 13 0

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