1998A&AS..132....1U


C.D.S. - SIMBAD4 rel 1.7 - 2019.10.24CEST05:05:49

1998A&AS..132....1U - Astron. Astrophys., Suppl. Ser., 132, 1-12 (1998/October-1)

Infrared flux excesses from hot subdwarfs. II. 72 more objects.

ULLA A. and THEJLL P.

Abstract (from CDS):

In our search, started in February, 1994, for JHK excess fluxes among the hot subdwarf population as an indicator for the presence of binary companions, results for 72 more hot objects (=63 hot subdwarfs + 1 Horizontal Branch B star + 7 white dwarfs + 1 non-subdwarf object) observed with the Carlos Sanchez CVF IR photometer (in June and October, 1994), are presented. The exact number of binary hot subdwarfs has gained renewed importance after the recent discovery of pulsators with G-F companions. The total number of candidates we propose may help to set some constraints; for example, out of 41 objects with excesses, 13 may have G-type binary companions. From our new sample, 14 discoveries of binary candidates have been found: BD+25 4655, Feige 108, HD4539, HD149382, HD216135, KPD2109+440, LSI+63 198, LSIV+10 9, LSV+22 38, PG 0011+221, PG 0116+242, PG 0314+103, PG 2151+100 and TON 139. Besides, 2 more from reanalysis of February, 1994, data - BD+37 1977 and BD+48 1777, may now be found to be IR excess candidates. Two suspected binaries, PB 8555 and SB 7, are also confirmed. By fitting Kurucz (1993, Kurucs CD-ROM No. 13) model spectra and assuming zero-age main sequence companions, we find upper limits on the subdwarf gravities. The distributions of upper limits on log(g), mostly between about 5.25 and 6.5, are nearly identical for both sdBs and sdOs.

Abstract Copyright:

Journal keyword(s): surveys - stars: subdwarfs - binaries: spectroscopic - white dwarfs - infrared: stars

Simbad objects: 85

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Number of rows : 85

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 SB 7 HS* 00 03 24.4386813316 -16 21 06.398206726   12.6 12.7     sdBHe0+F/G 20 0
2 PG 0004+133 HS* 00 07 33.7732353972 +13 35 57.590027152   12.63 13.02     sdB2.5VHe7 23 0
3 PG 0009+036 HS* 00 12 27.7615239591 +03 54 31.744077051   13.06 13.13 13.42   sdB2VIIpHe4 29 0
4 PG 0011+221 HS? 00 14 19.3140587785 +22 24 17.545638271   12.62       sd 7 0
5 HD 4539 HS* 00 47 29.2198372161 +09 58 55.690937647 9.17 10.12 10.24     sdB 69 0
6 BD-11 162 HS* 00 52 15.0693172232 -10 39 46.054602260 9.987 11.102 11.184 11.133 11.039 sdO+G 38 0
7 SB 395 HS* 00 59 11.6405917387 -18 18 00.435438534   12.4 12.6     sdB 10 0
8 Feige 11 HS* 01 04 21.6744758331 +04 13 37.051396308 10.847 11.826 12.065 12.183 12.324 sdB2VIHe4 109 0
9 GD 274 PM* 01 07 11.0188175039 +51 10 22.688555143   12.21 12.14     ~ 10 0
10 PB 8555 ** 01 10 12.709 -14 07 57.77   12.61 12.31 12.26   sdBHe0+F/G 10 0
11 PG 0110+262 HS* 01 13 14.8741272463 +26 27 31.249213924   11.57       sdB+G0V 15 0
12 PG 0116+242 HS* 01 19 29.0447388140 +24 25 31.245806091   12.19 11.72 11.76   sdB+? 9 0
13 PG 0122+214 * 01 25 29.5981965945 +21 36 30.682732901   12.60 13.34     sd 17 0
14 PG 0133+114 HS* 01 36 26.1919154277 +11 39 32.098577898   10.74       sdB1.5VIIHe4 34 0
15 PHL 1079 HS* 01 38 26.9906038284 +03 39 39.066358836   12.4 12.6     sdB+G7V 17 0
16 PG 0215+183 HS* 02 18 15.7415532518 +18 31 38.251590254   11.38       sdB 9 0
17 V* FS Cet WD* 02 35 07.5939678751 +03 43 56.817951540 11.027 12.209 12.412 12.325 11.968 DA1+dM 347 0
18 PG 0232+095 HS* 02 35 11.9874413660 +09 45 37.658211173   12.80 11.75     sdB+G1V 12 0
19 PG 0242+132 HS* 02 45 38.8793096408 +13 25 55.642262963   11.78       sdB0.5VHe10 19 0
20 PG 0314+103 HS* 03 17 42.2562173229 +10 30 54.644533380   13.82 13.49 13.67   sdB 6 0
21 LS I +63 198 HS* 03 29 05.6682994636 +64 04 42.160486711 11.71 13.18 13.20 12.96 13.2 sdOB 15 0
22 PG 0342+026 HS* 03 45 34.5761491216 +02 47 52.715509702   10.86 11.12 11.20   sdB3VIIHe4 36 0
23 HD 283048 HS* 03 53 13.7193770793 +25 45 21.824384535   10.40 10.35     sdO9.5+G? 17 0
24 HZ 3 HS* 03 53 31.3278475121 +10 45 04.064967646   12.8 12.86     sdO6He 13 0
25 NGC 1535 PN 04 14 15.7689951134 -12 44 21.934169738   12.01 12.82     sdO3: 496 0
26 BD+52 913 WD* 05 05 30.6182785658 +52 49 51.920797126 10.25 11.44 11.69 11.93 12.108 DA.8 959 0
27 LS V +22 38 HS* 06 16 13.3273979436 +22 45 48.782736570 11.69 11.5 10.9 10.45   sdO 20 0
28 HD 45166 WR* 06 26 19.1550467867 +07 58 28.071465236 9.05 9.81 9.88     WRpec+B8V 67 1
29 KPD 0631+1043 WD* 06 33 50.2954864723 +10 41 18.058264729 12.60 13.65 13.82 14.00   DA1.8 37 0
30 BD+34 1543 HS* 07 10 07.7048013144 +34 24 53.813852634   10.29 10.17     sdB+F? 21 0
31 V* HK Cnc HS* 08 59 02.6447355213 +11 56 27.839966009   13.47 13.480     sdB3VIIHe0 29 0
32 BD+37 1977 HS* 09 24 26.3928822549 +36 42 53.293596680   9.86 10.15     sdO 39 0
33 BD+48 1777 HS* 09 30 46.7811418219 +48 16 23.765039283   10.41 10.70     sdO9: 26 0
34 GD 299 HS* 09 38 20.3523773178 +55 05 50.091654658 10.666 11.824 12.093 12.178 12.261 sdOHe 36 0
35 Feige 34 HS* 10 39 36.7377085527 +43 06 09.209752646 9.613 10.91 11.14 11.319 11.464 sdOp 588 0
36 BD+10 2357 HS* 11 55 56.6503865095 +09 50 49.319458122   8.92 8.86     sdO+A3/5 17 0
37 Feige 65 HS* 12 35 51.1438949947 +42 22 39.719314185   11.78 12.046     sdB2 59 1
38 PG 1234+482 WD* 12 36 45.1438119188 +47 55 22.219209993     14.38     DA.9 87 2
39 Ton 139 HS* 12 56 04.8834179102 +28 07 19.520794893   12.91 12.81     sdB+F8V 45 0
40 HD 113001 ** 13 00 26.19112 +35 45 20.2091   9.66 9.55     A4V 51 0
41 Feige 80 HS* 13 19 53.6045874865 +12 03 58.272330210   11.27 11.35     sdO+G1V 24 0
42 HZ 44 HS* 13 23 35.2632775627 +36 07 59.545982652 10.186 11.42 11.65 12.00 11.995 sdBN0VIIHe28 362 0
43 PG 1338+481 HS* 13 40 08.8343398918 +47 51 51.854284817   13.33 13.588     sdB 30 0
44 PG 1409+605 HS* 14 11 01.8268466326 +60 14 11.627034035   14.64 14.46 14.55   sdBO 9 0
45 HD 128220 SB* 14 35 15.7846989338 +19 12 54.511945549   8.724 8.503     G0IIIn+sdO 108 0
46 Ton 209 HS* 14 35 20.2389340775 +23 45 30.478792427   12.20 12.11 12.86   sdB2VIIHe4 20 0
47 Ton 788 HS* 15 14 32.4560596705 +24 10 40.704992828   13.03 13.21     sdB 25 0
48 Ton 245 HS* 15 40 23.4584728304 +26 48 29.782790077   13.65 13.83     sdB 37 0
49 BD+33 2642 pA* 15 51 59.8857490337 +32 56 54.327647794 9.806 10.61 10.73 10.884 10.961 O7p 367 0
50 HD 149382 HS* 16 34 23.3332720075 -04 00 52.033863463 7.518 8.661 8.943 9.070 9.205 sdB 117 1
51 BD+29 3070 HS* 17 38 21.1995850160 +29 08 47.352318979   10.55 10.45     sdOB+F/G 21 0
52 BD+39 3226 HS* 17 46 31.9117461025 +39 19 09.070415423   9.89 10.18     sdOHe 30 0
53 HD 185510 RS* 19 39 38.8187463380 -06 03 49.460823987   9.44 8.235   6.967 K0III+sdB 100 0
54 RX J2013.1+4002 WD* 20 13 09.3685301695 +40 02 24.240184767     14.6     DAO+M2/3e 85 1
55 LS IV +00 21 HS* 20 31 18.2841950524 +01 05 25.861603084 11.03 12.45 12.82     sdB 10 0
56 LS IV +10 9 HS* 20 43 02.4779659976 +10 34 20.998642549 10.51 11.71 12.06     sdO 30 0
57 Mrk 509 Sy1 20 44 09.7504131334 -10 43 24.724854084   13.35 13.12 10.7   ~ 1093 0
58 LS IV -14 116 HS* 20 57 38.8745387224 -14 25 43.995275738 11.63 12.73 13.02 13.28   sdB0.5VIIHe18 52 0
59 PG 2102+037 HS* 21 05 07.1164084829 +03 54 46.527633543           sdO 5 0
60 KPD 2109+4401 HS* 21 11 47.6446188582 +44 13 50.621291301 12.14 13.11 13.30 13.64   sdB 62 0
61 PG 2110+127 HS* 21 13 21.0606264193 +12 57 09.220264556   13.12 12.96 12.98   sdB 18 0
62 PG 2111+023 HS* 21 13 42.3328352868 +02 33 09.544006629   13.3   13.53   sdB7VHe6 14 0
63 PG 2118+126 HS* 21 21 02.2738753078 +12 50 49.882046959   13.64       sdB 12 0
64 PG 2128+146 HS* 21 31 18.7918908018 +14 49 23.104783441   13.24       sdB 14 0
65 PHL 25 HS* 21 32 04.6240474493 -17 18 39.584989278   11.547 10.979     sdB 18 0
66 BD+28 4211 HS* 21 51 11.0220905905 +28 51 50.366090892 8.922 10.25 10.58 10.656 10.831 sdO2VIIIHe5 721 0
67 PG 2148+095 HS* 21 51 16.8857602100 +09 46 59.450088481   13.04 13.04 13.25   sdB0.5VHe2 14 0
68 PG 2151+100 HS* 21 53 57.3054950282 +10 17 35.069381394   12.07 12.34     sdB0VIIHe0 9 0
69 BD+25 4655 HS* 21 59 41.9751489837 +26 25 57.398356446 8.27 9.39 9.68     sdO6 96 0
70 V* FF Aqr Al* 22 00 36.4252746673 -02 44 26.868908849   10.23 9.408   8.245 G8III+sdO 105 0
71 PG 2158+082 HS* 22 01 02.2828954593 +08 30 47.913417950   12.8 13.38 13.49   sdO2VIIIHe40 12 0
72 PG 2159+051 HS* 22 01 58.6295689727 +05 24 28.300074351   12.87 12.94 13.21   sdB7IIIHe3 11 0
73 RX J2210.4-3006 WD* 22 10 29.0975897000 -30 05 43.104909162           DA1.7 27 0
74 PG 2218+020 HS* 22 21 24.8247043201 +02 16 18.430573889   13.6 13.9     sdB2.5VIIHe3 13 0
75 PG 2219+094 HS* 22 21 59.1664271264 +09 37 25.733927625   11.78 12.06     sdB0.5VpHe7 29 0
76 PHL 382 HS* 22 43 06.0219501669 -14 50 37.444539105   11.3 11.4     sdB 19 0
77 HD 216135 HS* 22 50 28.2299676806 -13 18 44.347500399 9.374 9.992 10.111 10.163 10.230 sdB5 37 0
78 GD 246 WD* 23 12 21.6156138550 +10 47 04.257261526 11.578 12.772 13.090 13.238 13.418 DA.9 201 0
79 Feige 108 HS* 23 16 12.4076810797 -01 50 35.101919760 11.671 12.736 12.973 13.079 13.218 sdB 61 0
80 BD-07 5977 HS* 23 17 46.7880673139 -06 28 30.942574405   11.09 10.54     sdB 14 0
81 Feige 110 HS* 23 19 58.3995050606 -05 09 56.170282845 10.360 11.45 11.50 11.970 12.145 sdO8VIIIHe5 536 1
82 PG 2318+239 HS* 23 21 05.8014965887 +24 10 38.951392500   12.83 13.656     sdB5IIIHe7 13 0
83 PG 2321+214 HS* 23 24 27.4679250110 +21 38 51.319718866   12.89       sdBN0VIIHe37 14 0
84 PG 2345+241 HS* 23 48 22.2891725322 +24 23 06.626854999   12.15 12.42     sdB3IVHe12 15 0
85 PG 2352+181 HS* 23 55 17.3405391891 +18 20 15.387602980   13.12 13.41 13.61   sdO7VIIHe40 16 1

    Equat.    Gal    SGal    Ecl

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2019.10.24-05:05:49

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