2011AJ....141..203A

Query : 2011AJ....141..203A

2011AJ....141..203A - Astron. J., 141, 203 (2011/June-0)

37 new T-type brown dwarfs in the Canada-France Brown Dwarfs Survey.

ALBERT L., ARTIGAU E., DELORME P., REYLE C., FORVEILLE T., DELFOSSE X. and WILLOTT C.J.

Abstract (from CDS):

The Canada-France Brown Dwarfs Survey is an i'- and z'-band survey realized with MegaCam at the Canada-France-Hawaii Telescope that covers a surface area of 780 deg2. Image analysis is now completed while J-band follow-up campaigns are ∼90% done. The survey identified about 70 T dwarf candidates, of which 43 now have near-infrared spectra obtained with NIRI and GNIRS at Gemini and ISAAC at the Very Large Telescope. Six of these were previously published and we present here the 37 new discoveries, all T dwarfs. They range from T0 to T8.5 with four being of type T7 or later. Both newly identified T8 dwarfs are possibly high log (g) massive brown dwarfs of thin disk age. One T4.5 dwarf shows signs of sub-metallicity. We present proper motions and near-infrared photometry, and discuss about the most peculiar/interesting objects in some details.

Abstract Copyright: ∼

Journal keyword(s): brown dwarfs - infrared: stars - proper motions - surveys

CDS comments: In paragraphe 3.4 HD 3615B is a misprint for HD 3651B

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 CFBDS J003402-005206 BD* 00 34 02.7971 -00 52 03.946           T8.5 51 0
2 * 54 Psc B BD* 00 39 18.9174 +21 15 16.309           T7.5 86 1
3 CFBDS J005910-011401 BD* 00 59 10.4899 -01 14 01.313           T9.0 43 0
4 CFBDS J013302+023128 BD* 01 33 02.04787 +02 31 30.0056           T8.5 8 1
5 CFBDS J022638-072831 BD* 02 26 38.96 -07 28 31.8           T6.5 2 0
6 CFBDS J022644-062522 BD* 02 26 44.65 -06 25 22.0           T3.0 4 0
7 HD 15200 * 02 26 47.0539423512 -06 25 31.023119172   10.13 9.00     K0III 6 0
8 CFBDS J025053+162050 BD* 02 50 53.33 +16 20 50.7           T2.5 2 0
9 CFBDS J025401-182529 BD* 02 54 01.67 -18 25 29.3           T6.5 3 0
10 CFBDS J025558-173020 BD* 02 55 58.46 -17 30 20.3           T1.0 2 0
11 CFBDS J025718-124853 BD* 02 57 18.08 -12 48 53.1           T3.5 2 0
12 CFBDS J025805-145534 BD* 02 58 05.92 -14 55 34.3           T1.5 2 0
13 CFBDS J025840-182648 BD* 02 58 40.60 -18 26 48.3           T2.5 2 0
14 CFBDS J030130-104504 BD* 03 01 30.53 -10 45 04.4           T6.0 3 0
15 CFBDS J030135-161418 BD* 03 01 35.16768 -16 14 17.8008           T7.0 7 0
16 CFBDS J030225-144125 BD* 03 02 25.88 -14 41 25.5           T6.0 3 0
17 CFBDS J030226-143719 BD* 03 02 26.67 -14 37 19.2           T4.0 2 0
18 CFBDS J030922-161426 BD* 03 09 22.29 -16 14 26.1           T5.5 1 0
19 2MASSI J0415195-093506 BD* 04 15 19.54368 -09 35 06.6732           T8.0 182 0
20 HD 42581B BD* 06 10 34.80 -21 52 00.0           T6.5 549 0
21 WISE J072227.27-054029.9 BD* 07 22 27.9060 -05 40 33.577           T9 90 0
22 ULAS J090116.23-030635.0 BD* 09 01 16.2370 -03 06 33.467           T7.5 14 0
23 CFBDS J090139+174051 BD* 09 01 39.82 +17 40 51.4           T3.5 3 0
24 CFBDS J090449+165347 BD* 09 04 49.60 +16 53 47.1           T4.0 3 0
25 CFBDS J092250+152741 BD* 09 22 50.12 +15 27 41.4           T7.0 7 0
26 CFBDS J095914+023655 BD* 09 59 14.80 +02 36 55.2           T3.5 3 0
27 NAME COSMOS Field reg 10 00 28.60 +02 12 21.0           ~ 3639 0
28 CFBDS J100113+022622 BD* 10 01 13.03800 +02 26 22.3980           T5.0 5 0
29 CFBDS J102841+565401 BD* 10 28 40.81758 +56 54 01.5650           T8.0 9 0
30 CFBDS J104209+580856 BD* 10 42 09.98 +58 08 56.6           T6.5 4 0
31 BD+13 2618C BD* 13 00 42.0799 +12 21 14.800         23.28 T8.5p 153 0
32 ULAS J133553.45+113005.2 BD* 13 35 53.5979 +11 30 07.151           T8.5 44 0
33 GD 165B BD* 14 24 39.09480 +09 17 10.4352         20.53 L4V 216 0
34 CFBDS J145044+092108 BD* 14 50 44.96 +09 21 08.7           T3.0 2 0
35 GJ 570 D BD* 14 57 14.96256 -21 21 47.7504           T8 242 1
36 CFBDS J145829+101343 ** 14 58 29.2721 +10 13 46.113           T8+Y0 31 0
37 CFBDS J145847+061402 BD* 14 58 47.93 +06 14 02.9           T2.0 2 0
38 LSPM J1459+0857B BD* 14 59 35.24616 +08 57 51.1632         17.92 T4.5 17 0
39 CFBDS J150000-182407 BD* 15 00 00.50 -18 24 07.4           T4.5 4 0
40 CFBDS J150411+102717 BD* 15 04 11.5912 +10 27 20.068           T7.0 29 0
41 BD+06 2986 PM* 15 04 53.5261634600 +05 38 17.160679455 12.262 11.13 9.815 8.998 8.257 K8V 107 0
42 SDSS J151114.65+060742.9 BD* 15 11 14.66280 +06 07 43.1652           T2.0 40 0
43 CFBDS J151803+071645 BD* 15 18 03.64 +07 16 46.0           T2.5 2 0
44 CFBDS J152514+111833 BD* 15 25 14.82 +11 18 33.2           T2.5 2 0
45 CFBDS J152655+034536 BD* 15 26 55.77552 +03 45 34.8336           T4.0 3 0
46 G 204-39 PM* 17 57 50.9660613981 +46 35 19.127676045   13.97 11.64 11.3   M2.5V 104 0
47 CFBDS J193430-214221 BD* 19 34 30.36216 -21 42 20.9052           T3.5 3 0
48 CFBDS J203737-192202 BD* 20 37 37.07 -19 22 02.9           T0.0 2 0
49 CFBDS J203841-185012 BD* 20 38 41.41 -18 50 12.3           T3.0 2 0
50 CFBDS J204803-183212 BD* 20 48 03.61 -18 32 12.8           T4.5 2 0
51 CFBDS J212243+042942 BD* 21 22 43.69 +04 29 42.0           T2.0 3 0
52 CFBDS J212413+010002 BD* 21 24 13.87968 +00 59 59.9172           T6 28 0
53 CFBDS J212702+002344 BD* 21 27 02.19 +00 23 44.7           T3.5 2 0
54 CFBDS J214139-033739 BD* 21 41 39.77 -03 37 39.1           T1.0 2 0
55 V* HN Peg BY* 21 44 31.3299461136 +14 46 18.983292600       6.16   G0V+ 561 0
56 Wolf 940 B BD* 21 46 38.4345 -00 10 34.714           T8.5 62 0
57 * eps Ind B BD* 22 04 10.5951812451 -56 46 58.239102418     24.12 20.8 15.60 T1V+T6V 176 1
58 CFBDS J221336-000333 BD* 22 13 36.00 -00 03 33.0           T1.5 1 0
59 CFBDS J223856+034947 BD* 22 38 56.30 +03 49 47.0           T2.0 2 0
60 CFBDS J232304-015232 BD* 23 23 04.515672 -01 52 33.78792           T6.0 7 0
61 CFBDS J232449-045736 BD* 23 24 49.19 -04 57 36.5           T4.5 1 0
62 CFBDS J232620-025643 BD* 23 26 20.21 -02 56 43.7           T3.0 1 0
63 CFBDS J233051-084454 BD* 23 30 51.24 -08 44 54.6           T0 3 0
64 NAME Hyades Moving Group MGr ~ ~           ~ 300 0

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