2011ApJ...743..109S

Query : 2011ApJ...743..109S

2011ApJ...743..109S - Astrophys. J., 743, 109 (2011/December-3)

Hunting the coolest dwarfs: methods and early results.

SCHNEIDER A., MELIS C., SONG I. and ZUCKERMAN B.

Abstract (from CDS):

We present the methods and first results of a survey of nearby high proper motion main-sequence stars to probe for cool companions with the Gemini camera at Lick Observatory. This survey uses a sample of old (age > 2 Gyr) stars as targets to probe for companions down to temperatures of 500 K. Multi-epoch observations allow us to discriminate comoving companions from background objects. So far, our survey has successfully rediscovered the wide T8.5 companion to GJ 1263 and has discovered a companion to the nearby M0V star GJ 660.1. The companion to GJ 660.1 (GJ 660.1B) is ∼4 mag fainter than its host star in the J-band and is located at a projected separation of ∼120 AU. Known trigonometric parallax and Two Micron All Sky Survey magnitudes for the GJ 660.1 system indicate a spectral type for the companion of M9±2.

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Journal keyword(s): brown dwarfs - stars: low-mass

Simbad objects: 55

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Number of rows : 55
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 G 32-35 PM* 00 35 55.5206330979 +10 28 35.513680587   17.21   14.3   M5V 25 0
2 HD 3765 PM* 00 40 49.2698857963 +40 11 13.823048636   8.30   6.8   K2V 265 0
3 Wolf 33 PM* 00 51 29.8364367571 +58 18 07.301720275   11.95 10.64 9.8 8.995 M0.0V 68 0
4 G 70-28 PM* 01 00 56.3701217971 -04 26 56.558397872   15.06 13.33     M4.0V 38 0
5 G 69-47 SB* 01 05 37.6425066824 +28 29 33.572409149   16.69   13.7   M5.42 66 0
6 BD+63 137 PM* 01 07 08.1981313437 +63 56 28.778073512   10.28   8.2   K7V 109 0
7 G 265-8 PM* 01 19 52.1739076588 +84 09 32.796818512   16.56   13.5   M5.1 36 0
8 BD+02 348 PM* 02 12 20.9873991153 +03 34 32.232373243 12.552 11.477 10.042 9.092 7.988 M1V 183 0
9 LP 411-6 PM* 02 46 34.7143323312 +16 25 10.203642785   18.88   15.8   M6V 31 0
10 HD 19305 PM* 03 06 26.7370541893 +01 57 54.630530984 11.697 10.44 9.055 8.201 7.427 M0V 134 0
11 * iot Per PM* 03 09 04.0193012009 +49 36 47.802053343 4.76 4.64   3.7   G0V 548 0
12 Cl Melotte 22 OpC 03 46 24.2 +24 06 50           ~ 3434 0
13 Cl Melotte 25 OpC 04 29 47.3 +16 56 53           ~ 3074 0
14 * lam Aur PM* 05 19 08.4754499121 +40 05 56.585080940 5.46 5.33 4.71 4.18 3.86 G1.5IV-VFe-1 533 0
15 BD+62 780 PM* 05 45 48.2763109507 +62 14 12.385602280   10.867   8.2   K7V 80 0
16 HD 38230 PM* 05 46 01.8857259248 +37 17 04.738728231   8.19   6.8   K0V 158 0
17 HD 52711 PM* 07 03 30.4592307736 +29 20 13.493121298 6.57 6.53   5.6   G0V 255 0
18 HD 69830 PM* 08 18 23.9469682407 -12 37 55.817187530   6.74 5.95     G8:V 526 1
19 HD 84035 PM* 09 43 25.6603477823 +42 41 29.618159221 10.420 9.270   8.691   K4V 117 0
20 * chi Her PM* 15 52 40.5410491705 +42 27 05.462878877 5.19 5.19 4.62 4.14 3.82 F8VFe-2Hdel-1 505 0
21 * gam Ser PM* 15 56 27.1826577018 +15 39 41.809580382 4.31 4.34 3.84 3.37 3.13 F6V 558 0
22 * rho CrB PM* 16 01 02.6604891411 +33 18 12.639472357   6.01   5.0   G0+VaFe-1 634 1
23 G 137-78 PM* 16 02 50.9446538131 +20 35 21.036273556   14.19 12.56 11.4   M4V 76 0
24 HD 154345 PM* 17 02 36.4038090379 +47 04 54.764174452   7.50   6.3   G9 270 1
25 G 170-12 PM* 17 04 22.3377939649 +16 55 55.571589702   13.81   11.959   M3V 40 0
26 G 19-16B LM* 17 12 51.2124829073 -05 07 25.429486239           d/sdM7 13 0
27 G 19-16 PM* 17 12 51.2720974378 -05 07 31.372615048 14.237 13.099 11.622 10.7 9.751 M1V 44 0
28 * w Her RG* 17 20 39.5674498400 +32 28 03.877958860 6.08 6.01 5.39 4.89 4.56 G0V 451 0
29 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 14412 0
30 HD 164922 PM* 18 02 30.8623420470 +26 18 46.805024012   7.79   6.5   G9V 215 1
31 G 260-1 PM* 18 17 15.0108022065 +68 33 18.958078698   17.26   14.2   M5.0V 26 0
32 Ross 136 PM* 18 22 06.6761540824 +06 20 37.582801679   13.95   12.213   M4V 64 0
33 HD 176029 PM* 18 58 00.1362313720 +05 54 29.240711762 11.888 10.673 9.217 8.286 7.31 M1.0V 155 0
34 G 185-18 PM* 19 21 38.7001955897 +20 52 03.284705570   15.13 13.42 13.116 10.44 M4.0Ve 72 0
35 * b Aql PM* 19 24 58.1999714302 +11 56 39.888480530 6.35 5.93   4.7   G7IVHdel1 490 0
36 G 23-24 PM* 20 03 50.9964775678 +05 59 44.238403811   13.70   11.646   M2.5V 42 0
37 HD 190404 PM* 20 03 52.1269218534 +23 20 26.469023374 8.490 8.080 7.270 6.759 6.314 K1V 237 0
38 G 230-42 PM* 20 33 40.3194913707 +61 45 13.589938724   14.03   11.2   M4.0V 51 0
39 Wolf 896 PM* 20 56 46.5969248424 -10 26 54.747253252 14.112 12.999 11.487 10.428 9.106 dM2.5 101 0
40 Ross 769 PM* 21 04 53.3812553832 -16 57 31.948120278 14.061 12.946 11.467 10.505 9.421 M1.5V 65 0
41 Wolf 1106 LM* 21 07 55.3979731725 +59 43 19.333213671   14.85   13.7   sdM1.5 57 0
42 Wolf 918 PM* 21 09 17.4271514815 -13 18 09.013127841 13.501 12.362 10.869 9.891 8.805 M1V 141 0
43 HD 204587 PM* 21 30 02.7560054580 -12 30 36.245166319 11.59 10.36 9.075 8.28 7.586 K7Vk: 121 0
44 Wolf 940 B BD* 21 46 38.829 -00 10 38.59           T8+/Y? 57 0
45 Wolf 940 PM* 21 46 40.4228878204 -00 10 23.771502145   14.31 12.70 12.42   dM4.0 70 0
46 LP 639-1 PM* 21 56 55.2470506518 -01 54 09.334556143   16.4 14.64     M5.03 34 0
47 G 241-1 PM* 22 16 20.2152641083 +70 56 39.818509325   13.29 11.82     M2.0V 32 0
48 G 67-15 PM* 22 42 38.7522480751 +17 40 09.276151170 14.201 13.172 11.704 11.381 9.354 M2.5V 51 0
49 G 241-45 PM* 23 07 29.9174531889 +68 40 05.156157368   13.99   11.4   M3.0V 30 0
50 G 68-8 PM* 23 21 37.4486739614 +17 17 25.391139752 14.299 13.236 11.710 10.514 8.942 M3.5V 100 0
51 G 29-35 PM* 23 26 32.5002497517 +12 09 33.659322400   14.0   12.333   M2.5V 34 0
52 HD 221354 PM* 23 31 22.2087431778 +59 09 55.867801045   7.57   6.2   K0V 171 0
53 G 171-5 PM* 23 35 44.4739930016 +41 58 03.827307430   12.73 11.16 10.3   M1.0V 41 0
54 G 129-47 PM* 23 57 44.1361608511 +23 18 16.484958527   13.23 11.70 11.39   M3V 37 0
55 LP 149-14 PM* 23 59 49.5091022136 +47 45 44.511240059   17.97   14.0   M5V 26 0

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