2008AJ....135.2024A

Query : 2008AJ....135.2024A

2008AJ....135.2024A - Astron. J., 135, 2024-2032 (2008/June-0)

Spitzer/IRAC search for companions to nearby, young M dwarfs.

ALLEN P.R. and REID I.N.

Abstract (from CDS):

We present the results of a survey of nearby, young M stars for wide low-mass companions with the Infrared Array Camera (IRAC) on the Spitzer Space Telescope. We observed 40 young M dwarfs within 20 pc of the Sun, selected through X-ray emission criteria. A total of ten candidate companions were found with IRAC colors consistent with T dwarfs. Extensive ground-based NIR follow-up observations rejected all these candidates. Two additional candidates were discovered via common proper motion measurements, one of which was rejected as a background object and the other is a bona fide companion to GJ 2060, a member of the AB Doradus moving group.

Abstract Copyright: ∼

Journal keyword(s): binaries: visual - stars: formation - stars: low-mass, brown dwarfs

Nomenclature: NAME GJ 2060 system.

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 LP 348-40 PM* 00 11 53.0346750552 +22 59 04.593551280   13.20   12.736   M3.5V 34 0
2 G 172-1 ** 00 28 53.9091058743 +50 22 33.127055200   14.80 13.17 12.815   M3.7V 44 0
3 G 269-153 ** 01 24 27.683952 -33 55 08.64300   15.13 13.54 13.04   M4.6V+M4.3V 26 0
4 BD-21 332 Er* 01 53 11.3579460720 -21 05 43.325371860   13.41 11.406 11.109 9.262 M2Ve 34 0
5 G 173-29 PM* 01 56 02.4862294272 +49 32 45.003782364   14.81   12.9   ~ 6 0
6 G 3-35 SB* 02 02 44.3508665519 +13 34 33.423280141   15.6   14.460   M5V 42 0
7 G 173-39 Er* 02 08 53.6246553758 +49 26 56.437533465   14.02 12.45 12.12   M4.0Ve 71 0
8 V* CC Eri BY* 02 34 22.5661889568 -43 47 46.869120096 11.305 10.201 8.865 7.926 6.992 K7V 270 0
9 G 36-26 PM* 02 36 44.1275847809 +22 40 26.198863038   16.3   14.0   M5.0V 36 0
10 Cl Melotte 22 OpC 03 46 24.2 +24 06 50           ~ 3434 0
11 G 80-21 Er* 03 47 23.3412414313 -01 58 19.947831323 14.052 13.048 11.537 10.452 9.098 M3.0V 128 0
12 V* II Tau Er* 03 49 43.2760877136 +24 19 04.494227808   15.798 14.185 14.021   M4.6V 81 0
13 Cl Melotte 25 OpC 04 29 47.3 +16 56 53           ~ 3074 0
14 StKM 1-497 TT* 04 37 37.4553491592 -02 29 28.950973764   12.04 10.59   8.59 M1.1V 127 0
15 G 39-29 ** 04 38 12.623664 +28 12 59.91120   14.25 12.55 12.25   M4.5Ve 59 0
16 LP 655-48 LM* 04 40 23.2746368923 -05 30 08.125383990   18.9 17.79 15.72 13.36 M7.5Ve 64 0
17 LP 776-25 Er* 04 52 24.4148135160 -16 49 21.926289432   12.76 11.639 11.237 9.1 M3.3V 71 0
18 LP 717-36 ** 05 25 41.666208 -09 09 12.47904   14.167 12.569 12.257   M3.5V 42 0
19 V* AB Dor TT* 05 28 44.8712165880 -65 26 55.199147208 8.259 7.856 6.999 6.496 5.993 K0V 1021 0
20 HD 42581B BD* 06 10 34.80 -21 52 00.0           T6.5 504 0
21 G 108-4 SB* 06 29 50.2964229552 -02 47 45.686124420   15.349 13.832 13.561 11.02 M4.0V 22 0
22 NAME AB Dor Moving Group MGr 06 38 53.4 -42 50 04           ~ 471 0
23 CD-29 4446C PM* 07 28 51.1711630008 -30 15 52.826557860   15.43 13.72 13.51 10.62 M5V 15 0
24 CD-29 4446 SB* 07 28 51.3552114700 -30 14 49.309736426 12.47 11.60 10.08 9.83 7.885 M1Ve 83 0
25 BD+21 1764 Er* 08 08 13.1858384276 +21 06 18.248947590   10.89   8.7   K7Ve 69 0
26 BD+21 1764B SB* 08 08 13.5967231242 +21 06 09.700830177   12.65 11.20 10.649   M3.0V 38 0
27 V* AZ Cnc Er* 08 40 29.6791626163 +18 24 08.726250637   19.2 17.59 16.6 13.45 M6.0V 85 0
28 LP 726-11 PM* 08 48 36.4540281000 -13 53 08.260062972     12.180   9.665 M2.6V 17 0
29 V* AD Leo Er* 10 19 36.2808181226 +19 52 12.010446571   10.82 9.52 9.19   dM3 1340 1
30 IC 2602 OpC 10 42 27.1 -64 25 34           ~ 675 0
31 NAME TW Hya Association As* 11 01.9 -34 42           ~ 942 0
32 LP 491-51 SB* 11 03 21.2586297000 +13 37 57.025080588   14.15   12.635   M3.0V 41 0
33 V* CW UMa Er* 11 11 51.7407213394 +33 32 11.229919459   14.02   12.203   M3.5V 77 0
34 L 546-85 ** 13 27 19.615488 -31 10 39.63216       13.302   M3.5V 32 0
35 Ross 845 LM* 14 13 04.8612731903 -12 01 26.806941526   15.471 13.889 13.562 10.734 M5Ve 72 0
36 V* IZ Boo PM* 14 20 04.6835498928 +39 03 01.426968180   14.26 12.365 11.843   M3.0Ve 29 0
37 GD 165B BD* 14 24 39.09480 +09 17 10.4352         20.53 L4V 205 0
38 V* OT Ser PM* 15 21 52.9325510712 +20 58 39.910874376 12.662 11.522 10.003 8.993 7.843 M1.0V 143 0
39 G 180-11 ** 15 55 31.744608 +35 12 03.18600   15.41   13.464   M4V 62 0
40 LP 331-57 SB* 17 03 52.858104 +32 11 45.96504   13.570 11.887 11.473   M2.4V 36 0
41 G 227-22 PM* 18 02 16.6038674062 +64 15 44.241600544   14.74   13.010   M5.0V 76 0
42 LP 390-16 BY* 18 13 06.5715967944 +26 01 51.859334352   14.93   12.970   M4.0V 55 0
43 VB 10 Er* 19 16 57.6109547886 +05 09 01.600923413     17.30     M8V 476 1
44 G 125-15 SB* 19 31 12.5536905936 +36 07 29.860275000   15.61 14.12 12.60 11.02 M4.5V 36 0
45 HD 197481 BY* 20 45 09.5324974119 -31 20 27.237889841   10.05 8.627 9.078 6.593 M1VeBa1 1153 0
46 LP 756-3 PM* 20 46 43.6461496322 -11 48 13.354173932     13.856 13.443 10.895 M4.0V 28 0
47 BD-22 5866 SB* 22 14 38.3705936256 -21 41 53.188190988   11.72 10.428 10.137 8.606 M0Ve 46 1
48 StKM 1-2018 ** 22 33 22.6593 -09 36 53.737   13.98 12.41 12.10 10.07 M3e 45 0
49 V* WW PsA BY* 22 44 57.9628374984 -33 15 01.744541676 14.583 13.627 12.111 10.916 9.109 M4IVe 124 1
50 V* EV Lac Er* 22 46 49.7312610268 +44 20 02.374381562   11.85 10.26 9.89   M4.0Ve 902 2
51 V* GT Peg BY* 22 51 53.5351209551 +31 45 15.192825225       11.281   M3.5Ve 158 0
52 LP 642-48 ** 23 20 57.7030474896 -01 47 37.294467972   15.12 13.694 13.43 10.87 M4.0V 33 0
53 G 275-106 SB* 23 48 36.0554902893 -27 39 38.928690183   13.948 12.34 11.25 9.88 M2.5 44 0
54 G 68-46 PM* 23 51 22.2966320952 +23 44 20.580799416   15.33   13.895   M4.0V 46 0
55 G 273-191 ** 23 58 13.696536 -17 24 33.77412   13.51 12.009 11.519 9.593 M1Ve 31 0

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