2001PASP..113..490W

Query : 2001PASP..113..490W

2001PASP..113..490W - Publ. Astron. Soc. Pac., 113, 490-500 (2001/April-0)

A search for binary hot subdwarfs. I. BVRI photometry of Palomar-Green survey sdO stars.

WILLIAMS T., McGRAW J.T. and GRASHUIS R.

Abstract (from CDS):

Nine binary candidates have been identified from a sample of 64 hot subdwarf sdO/OB/OC stars selected from the Palomar-Green Survey. Three of the binary candidates had been identified previously. The binary candidates emerged from BVRI photometric observations and were identified by their intrinsic color excesses in two-color plots and by comparison to synthetic binary system colors. The data presented here are the initial results of a larger program aimed at identifying helium-rich hot subdwarf binary systems suitable for more detailed investigation of their fundamental stellar parameters and evolutionary status.

Abstract Copyright: ∼

Journal keyword(s): Stars: Binaries: General - Stars: Fundamental Parameters - Stars: Horizontal-Branch

CDS comments: Table 1: designation 'NN' in column (1) not in SIMBAD. In Table 1 PG 10 36+434 misprint for PG 1036+433 and PG 1430-083 for PG 1430-082.

Simbad objects: 64

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Number of rows : 64
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 PG 0038+199 WD* 00 41 35.3383561824 +20 09 16.907246244   13.82       DO1 46 0
2 PG 0039+135 HS* 00 42 16.5728962920 +13 45 40.488219324   12.05       sdOC7VIIHe40 27 1
3 PG 0205+134 XB* 02 08 03.497520 +13 36 24.91632   14.80 15.09 14.64   DA1+dM 39 0
4 Feige 19 HS* 02 10 54.2120517144 +01 47 47.181644808   13.4 13.57     sdO9VIIHe39 31 1
5 PG 0216+032 HS* 02 19 18.9089011440 +03 26 51.367692300   14.36 14.62 14.85   sdOC 30 0
6 PG 0226+151 HS* 02 28 49.7371767048 +15 20 34.412820072   16.1   16.4   sdOC 15 0
7 PG 0310+149 HS* 03 13 37.1755354608 +15 06 21.265349004   15.36       sdO 22 0
8 PG 0823+546 HS* 08 26 49.6108286760 +54 28 00.333515460   14.09 14.32 14.63   sdOC 33 0
9 PG 0836+619 HS* 08 40 44.0046423168 +61 47 52.046055276   14.12 14.35 14.68   sdO 15 0
10 PG 0838+133 HS* 08 41 43.8590911176 +13 04 29.982966348     13.66     sdOC7VIIHe40 29 1
11 PG 0931+691 WD* 09 35 59.8332319320 +68 52 01.553237328           DO 21 0
12 GD 299 HS* 09 38 20.3526087648 +55 05 50.092111680 10.666 11.824 12.093 12.178 12.261 sdOHe 52 0
13 GD 300 HS* 09 55 19.4677204416 +51 36 59.014376028 11.110 12.341 12.662 12.801 12.977 sdO 39 1
14 PG 0953+024 HS* 09 55 34.5945403344 +02 12 48.685093740   14.79 15.00 15.49   sdOHe 18 0
15 Feige 34 HS* 10 39 36.7358839104 +43 06 09.212615280 9.613 10.91 11.14 11.319 11.464 sdOp 731 0
16 PG 1125-055 HS* 11 28 12.2454556440 -05 46 15.191729328   16.8   16.6   sdOC 15 0
17 Feige 46 HS* 11 37 26.3700943344 +14 10 14.108131740   12.94 13.24     sdO 67 0
18 PG 1134+463 HS* 11 37 30.8814622704 +46 00 06.259987620   14.90 15.14 15.58   sdOHe 21 0
19 PG 1204+543 WD* 12 07 28.4303462304 +54 01 29.154120672   15.613 15.977     DAO 23 0
20 PG 1220-056 HS* 12 22 58.9510599024 -05 53 04.860132972   14.73 14.76     sdO3VIIeHe40 15 0
21 BD+18 2647 HS* 12 41 51.7899961800 +17 31 19.750566756 10.261 11.70 11.63 11.969 12.159 sdOpec 185 1
22 Ton 109 HS* 12 42 31.4034749568 +11 44 00.964887612   15.50 15.75 16.09   sdOC 27 0
23 PG 1249+762 HS* 12 50 39.9017033664 +75 53 00.164665608   15.0   15.98   sdOC2VIIIHe36 24 1
24 PG 1251+019 HS* 12 54 08.3239424832 +01 43 24.111086088   15.24       sdOHe 27 0
25 Ton 143 HS* 13 03 46.6257490224 +26 46 30.548073504   15.47 15.710 15.96   sdOHe 40 0
26 PG 1314+003 WD* 13 17 24.7478552856 +00 02 37.381355736   15.97       DO 33 1
27 Feige 80 HS* 13 19 53.6033701512 +12 03 58.272912072   11.281 11.410 11.496   sdO+G1V 32 0
28 PG 1318+062 HS* 13 20 44.3902311576 +05 59 01.342789044   13.90 14.786     sdOC9VIIHe39 22 0
29 HZ 44 HS* 13 23 35.2629445608 +36 07 59.544140304 10.186 11.42 11.65 12.00 11.995 sdBN0VIIHe28 439 0
30 PG 1325+054 HS* 13 28 21.3712855368 +05 08 55.928824620   13.10 14.39     sdO8VIIHe40 24 0
31 PG 1348+607 HS* 13 50 16.0233413592 +60 24 37.747929780   15.9 16.660 16.4   sdOC1VIIHe40 21 1
32 PG 1348+369 HS* 13 50 52.7832900408 +36 42 02.163455100   13.283 13.603 13.601   sdO 31 0
33 PG 1412+613 HS* 14 14 20.9702967792 +61 01 07.792902804   14.61 14.87 15.18   sdOC 27 1
34 PG 1425+590 HS* 14 27 00.0944655432 +58 47 00.713740668   15.64 16.01 16.35   sdOHe 18 0
35 PG 1427+196 HS* 14 29 27.7632629472 +19 21 36.625603932   13.89 14.12 14.49   sdOC 21 1
36 PG 1430-083 HS* 14 33 36.8012804880 -08 28 23.248125984   15.710 16.045     sdOHe 12 1
37 PG 1444+076 HS* 14 47 08.2772324232 +07 23 49.559799300   14.44 14.72     sdOHe 21 0
38 PG 1508+443 HS* 15 10 00.3709394112 +44 08 03.944838948   14.74 14.99 15.45   sdOB 19 0
39 PG 1511-110 HS* 15 14 16.9962679704 -11 14 12.482699604   14.80 14.97 15.23   sdOHe 11 0
40 PG 1525-071 HS* 15 28 11.5771773672 -07 16 32.899212840 13.658 14.85 14.89 15.14 15.197 sdO 42 0
41 PG 1528+029 HS* 15 30 56.3326280112 +02 42 22.594057920   15.24 15.42 15.82   sdO8VIIHe40 18 0
42 PG 1536+690 HS* 15 36 48.7745458464 +68 52 07.512541860   14.53 14.65 14.90   sdOC2VIIIHe40 20 0
43 PG 1534-018 HS* 15 37 33.8231874960 -02 00 21.914190684   14.90 15.01 15.58   sdOC6.5VIIHe40 15 0
44 PG 1537-046 HS* 15 40 33.3401624856 -04 48 12.190390992   14.87 14.99 15.34   sdOC2VIIeHe40 12 0
45 PG 1539+043 HS* 15 42 13.6022610696 +04 08 36.106872792   15.98       sdOC 16 0
46 Ton 803 HS* 15 46 09.0104137296 +25 07 40.746937656   13.884 14.082 14.457   sdOBHe 20 0
47 PG 1545+035 HS* 15 48 24.2466197568 +03 22 50.907152892   13.57   14.94   sdO2VIeHe12 23 0
48 PG 1554+222 HS* 15 56 33.6165820440 +22 02 45.889773468   13.35       sdOB 18 0
49 PG 1602+013 HS* 16 04 37.3725672120 +01 10 08.265677448   15.07 15.06 15.08   sdO5VIepHe2 10 0
50 PG 1624+382 HS* 16 26 16.7175806904 +38 07 10.476260724   15.49 15.73 16.14   sdOC 24 0
51 PG 1628+553 HS* 16 29 12.1238308584 +55 15 18.610994628   15.58 15.84 16.23   sdOC 19 0
52 PG 1638+676 HS* 16 38 43.7420783520 +67 28 08.365475028   15.68 15.97 16.52   sdOC 13 1
53 PG 1638+147 HS* 16 40 34.2711606024 +14 38 00.413553804   14.72 14.89 15.12   sdOC 10 0
54 PG 1642+038 HS* 16 44 45.5755896336 +03 42 19.161436860   15.25 15.37 15.66   sdOC 9 0
55 PG 1652+159 HS* 16 54 48.3809044176 +15 52 58.621549836   15.25       sdOC 16 0
56 PG 1654+322 HS* 16 55 52.9226692104 +32 08 25.080125424   16.24       sdOC 13 0
57 PG 1703+355 HS* 17 05 15.2166008664 +35 28 18.555258252   15.45       sdOC 20 0
58 PG 1704+466 HS* 17 06 10.6030618536 +46 31 43.190452704   15.6   16.30   sdOC 10 0
59 PG 1708+614 HS* 17 08 40.6126017144 +61 17 46.495800024     14.4     sdOC 19 0
60 PG 1708+602 HS* 17 09 15.8897801784 +60 10 11.008596936   13.42 13.74 14.06   sdO2VIIHe14 42 0
61 PG 2215+151 HS* 22 17 48.2204437248 +15 20 57.376954320   14.34 14.53 14.79   sdOC9VIIHe40 20 0
62 PG 2219+094 HS* 22 21 59.1666812160 +09 37 25.744381788   11.78 12.06     sdB0.5VpHe7 38 0
63 PG 2304+193 HS* 23 07 14.5748796960 +19 32 19.306830768   15.9   16.1   sdOC 12 0
64 PG 2352+181 HS* 23 55 17.3404839672 +18 20 15.387941796   13.12 13.41 13.61   sdO7VIIHe40 27 1

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