2017AJ....153..196S

Query : 2017AJ....153..196S

2017AJ....153..196S - Astron. J., 153, 196-196 (2017/April-0)

A 2MASS/AllWISE search for extremely red L dwarfs: the discovery of several likely L type members of β Pic, AB Dor, Tuc-Hor, Argus, and the Hyades.

SCHNEIDER A.C., WINDSOR J., CUSHING M.C., KIRKPATRICK J.D. and SHKOLNIK E.L.

Abstract (from CDS):

Young brown dwarfs share many properties with directly imaged giant extrasolar planets. They therefore provide unique laboratories for investigating the full range of temperature and mass encompassed by the growing collection of planets discovered outside our Solar System. Furthermore, if they can be tied to a particular group of coeval stars, they also provide vital anchor points for low-mass empirical isochrones. We have developed a novel procedure for identifying such objects based on their unique 2MASS and AllWISE colors. Using our search criteria, we have identified 50 new, late-type L dwarf candidates, 47 of which are spectroscopically confirmed as L dwarfs with follow-up near-infrared spectroscopy. We evaluate the potential membership of these objects in nearby, young moving groups using their proper motions, photometric distance estimates, and spectroscopic indicators of youth, and find seven likely L-type members belonging to the β Pictoris moving group, the AB Doradus moving group, the Tucana-Horologium association, or the Argus association, in addition to several lower probability members. Also found are two late-type (L5 and L6) potential members of the nearby Hyades cluster (WISEA J043642.75+190134.8 and WISEA J044105.56+213001.5).

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): brown dwarfs - brown dwarfs

Simbad objects: 123

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Number of rows : 123
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 NAME THA MGr 00 00 -62.0           ~ 540 0
2 2MASS J00062779+1857320 BD* 00 06 27.796 +18 57 32.01           L7 4 0
3 PSO J004.7148+51.8918 BD* 00 18 51.51 +51 53 30.6           L7 5 0
4 2MASS J00205014-1519129 BD* 00 20 50.148 -15 19 12.97           L6: 3 0
5 2MASS J00305194-3808292 BD* 00 30 51.94632 -38 08 29.2308           L5 2 0
6 2MASS J00440332+0228112 BD* 00 44 03.32160 +02 28 11.2404           L7 9 0
7 2MASS J00470038+6803543 BD* 00 47 00.38664 +68 03 54.3672           L9pec 86 0
8 2MASS J00581143-5653326 BD* 00 58 11.43456 -56 53 32.6076           L9 5 0
9 2MASSI J0103320+193536 BD* 01 03 32.03712 +19 35 36.1824           L6V 93 0
10 2MASS J01073866-1314134 BD* 01 07 38.66880 -13 14 13.4808           L7: 2 0
11 2MASS J01075242+0041563 BD* 01 07 52.42200 +00 41 56.3964           L8 64 0
12 2MASSW J0129122+351758 BD* 01 29 12.21888 +35 17 58.0884           L4V 9 0
13 2MASS J01355671-6202465 BD* 01 35 56.71512 -62 02 46.5792           L4 1 0
14 2MASS J01453520-0314117 BD* 01 45 35.20656 -03 14 11.7636           L9 4 0
15 2MASS J02004709-5105206 BD* 02 00 47.09472 -51 05 20.6088           L7 8 0
16 2MASS J02022917+2305141 BD* 02 02 29.17704 +23 05 14.1000           L7 6 0
17 2MASSW J0205034+125142 BD* 02 05 03.44232 +12 51 42.2316           L5V 37 0
18 2MASS J02062493+2640237 BD* 02 06 24.93192 +26 40 23.7540           L9pec 22 0
19 2MASS J02260907-1609591 BD* 02 26 09.07992 -16 09 59.1264           L7 5 0
20 2MASS J02374987-2605431 BD* 02 37 49.87320 -26 05 43.1844           L2 1 0
21 DENIS J025503.3-470049 BD* 02 55 03.6927058871 -47 00 51.356903955     22.921 19.906 17.454 L9 170 0
22 2MASS J02595509-3146535 BD* 02 59 55.09944 -31 46 53.5152           L4: 1 0
23 2MASSI J0318540-342129 BD* 03 18 54.0760885341 -34 21 29.084072887           L7 33 0
24 2MASS J03204921-5326548 BD* 03 20 49.21488 -53 26 54.8952           L6 1 0
25 2MASS J03244033-1919031 BD* 03 24 40.33560 -19 19 03.1908           L8 2 0
26 2MASS J03264225-2102057 BD* 03 26 42.25704 -21 02 05.7732           L5 32 0
27 Cl Alessi 13 OpC 03 27 32.7 -35 50 45           ~ 92 0
28 2MASSW J0337036-175807 BD* 03 37 03.59592 -17 58 07.9068           L4.5V 27 0
29 PSO J057.2893+15.2433 BD* 03 49 09.44 +15 14 36.0           L7 13 0
30 2MASS J03552337+1133437 BD* 03 55 23.3735910810 +11 33 43.797034332           L5gamma 142 0
31 2MASS J03582255-4116060 BD* 03 58 22.55064 -41 16 06.0420           L6pec 18 1
32 SIMP J0400576-132202 BD* 04 00 57.63672 -13 22 02.4060           L6.5 2 0
33 2MASS J04123269+1044078 BD* 04 12 32.69040 +10 44 07.8000           L5: 5 0
34 2MASS J04183483+2131275 BD* 04 18 34.83048 +21 31 27.5124           L5 13 0
35 2MASS J04184785+2520027 BD* 04 18 47.8629825024 +25 20 02.518555020           L7.0 3 0
36 2MASSI J0421072-630602 BD* 04 21 07.18488 -63 06 02.2464           L5beta 23 0
37 2MASS J04223142+0810138 BD* 04 22 31.42944 +08 10 13.8576           L1 2 0
38 2MASS J04250679-4255085 BD* 04 25 06.79248 -42 55 08.5584           L8 2 0
39 Cl Melotte 25 OpC 04 30 27.4 +16 46 43           ~ 3309 0
40 2MASS J04364267+1901351 BD* 04 36 42.67872 +19 01 35.1768           L6 7 0
41 2MASS J04371868-5509449 BD* 04 37 18.68376 -55 09 44.9928           L5 3 0
42 2MASS J04410548+2130019 BD* 04 41 05.48424 +21 30 01.9836           L5 6 0
43 2MASS J04463535+1451261 BD* 04 46 35.35200 +14 51 26.1864           L2.0 10 0
44 2MASS J04590034-2853396 BD* 04 59 00.34776 -28 53 39.6456           L7: 4 0
45 2MASS J05012406-0010452 BD* 05 01 24.0852555792 -00 10 45.591750444           L4gamma 65 0
46 2MASS J05025968-6102031 BD* 05 02 59.68008 -61 02 03.1560           L4: 1 0
47 NAME 32 Ori group OpC 05 27 11 +06 16.0           ~ 84 0
48 2MASS J05595937-5835449 BD* 05 59 59.37264 -58 35 44.9844           L2 1 0
49 NAME Columba Association As* 06 04 19.4 -22 20 40           ~ 337 0
50 NAME AB Dor Moving Group MGr 06 38 53.4 -42 50 04           ~ 540 0
51 2MASS J06593577+7714594 BD* 06 59 35.778 +77 14 59.48           L 2 0
52 2MASS J07053420-1839269 BD* 07 05 34.20528 -18 39 26.9424           L8 2 0
53 2MASS J07113894+3706040 BD* 07 11 38.944 +37 06 04.02           L6 3 0
54 2MASS J07235265-3309446 BD* 07 23 52.6588501320 -33 09 44.544579084           L5 7 0
55 2MASS J07400712+2009216 BD* 07 40 07.12008 +20 09 21.6900           L6.0 9 0
56 2MASS J08095903+4434216 BD* 08 09 59.03832 +44 34 21.6120           L6.0 25 0
57 2MASS J08132232-1522043 BD* 08 13 22.32720 -15 22 04.3860           L7: 3 0
58 2MASSW J0820299+450031 BD* 08 20 29.96136 +45 00 31.5180           L5V 28 0
59 2MASSI J0825196+211552 BD* 08 25 19.6125672818 +21 15 51.549358145       21.97 19.22 L7.5V 138 0
60 2MASS J08262432-6012003 BD* 08 26 24.32400 -60 12 00.3204           L8 1 0
61 2MASSW J0829570+265510 BD* 08 29 57.07872 +26 55 09.9408           L6.5V 19 0
62 2MASS J08350622+1953050 BD* 08 35 06.22944 +19 53 05.0532           L5 46 0
63 2MASS J08354256-0819237 BD* 08 35 42.5314423948 -08 19 23.372129099           L6.5 81 0
64 Cl Mamajek 1 OpC 08 42 32.9 -78 57 47           ~ 392 0
65 2MASS J08575849+5708514 BD* 08 57 58.4721442289 +57 08 51.414025854           L7V 57 0
66 2MASS J09025921+6708355 BD* 09 02 59.21328 +67 08 35.5056           L7 5 0
67 2MASS J09385814+7612105 BD* 09 38 58.14408 +76 12 10.5084           L 1 0
68 2MASS J09553336-0208403 BD* 09 55 33.36528 -02 08 40.3728           L7pec 4 0
69 2MASS J09560810-1447065 BD* 09 56 08.10768 -14 47 06.5544           L9 13 0
70 2MASS J09593276+4523309 BD* 09 59 32.76648 +45 23 30.9732           L3-4 12 0
71 G 196-3B BD* 10 04 20.6391105792 +50 22 59.378638152           L3beta 115 0
72 2MASSI J1010148-040649 BD* 10 10 14.80704 -04 06 49.9320           L6 73 0
73 NAME TW Hya Association As* 11 01.9 -34 42           ~ 1018 0
74 2MASSW J1102337-235945 BD* 11 02 33.75144 -23 59 46.4028           L4.5V 9 0
75 TWA 42 BD* 11 19 32.54328 -11 37 46.6968           L7 47 0
76 TWA 41 BD* 11 47 24.21360 -20 40 20.4384           L7V 36 0
77 NAME eps Cha Association OpC 11 59 51 -78 12.4           ~ 188 0
78 2MASS J12010443+5730040 BD* 12 01 04.43088 +57 30 04.0644           L9 3 0
79 NAME Ursa Major Moving Group MGr 12 32 +57.0           ~ 467 1
80 SIPS J1256-1257B BD* 12 56 01.83264 -12 57 27.6912           L7 154 0
81 2MASS J13052330-3951043 BD* 13 05 23.30208 -39 51 04.3632           L8: 2 0
82 NAME Kelu-1 BD* 13 05 40.1642434199 -25 41 05.712165150         16.85 L2+L3.5 267 0
83 SIMP J1307298-055814 BD* 13 07 29.84304 -05 58 14.6532           L8 5 0
84 2MASS J13184567+3626138 BD* 13 18 45.67728 +36 26 13.8048           L6 3 0
85 2MASSW J1343167+394508 BD* 13 43 16.160880 +39 45 10.47204           L5V 21 0
86 NAME beta Pic Moving Group MGr 14 30 -42.0           ~ 894 0
87 2MASS J14321127+3244338 BD* 14 32 11.27064 +32 44 33.8388           L7 3 0
88 2MASS J14564300+6450092 BD* 14 56 43.00536 +64 50 09.2112           L7 2 0
89 2MASSW J1506544+132106 BD* 15 06 54.3299045806 +13 21 06.039351151           L3 116 0
90 2MASS J15335868+4757065 BD* 15 33 58.68480 +47 57 06.5412           L8: 3 0
91 2MASS J15515237+0941148 BD* 15 51 52.37904 +09 41 14.8884           L4gamma 23 0
92 2MASSW J1553214+210907 BD* 15 53 21.42528 +21 09 07.1964           L5.5V 13 0
93 2MASS J16154255+4953211 BD* 16 15 42.55248 +49 53 21.1704           L4gamma 43 0
94 2MASS J16234157-7402266 BD* 16 23 41.57064 -74 02 26.6388           L9 7 0
95 2MASS J16322911+1904407 BD* 16 32 29.11416 +19 04 40.7136       22.42 19.98 L8V 145 0
96 2MASS J16471580+5632057 BD* 16 47 15.80544 +56 32 05.7264           L9pec 39 0
97 2MASSI J1726000+153819 BD* 17 26 00.07752 +15 38 19.0140           L2V 49 0
98 2MASS J17345400-4813556 BD* 17 34 54.00960 -48 13 55.6608           L5 4 0
99 2MASS J17405783+1317121 BD* 17 40 57.83544 +13 17 12.1308           L9 3 0
100 2MASS J17410280-4642218 BD* 17 41 02.80656 -46 42 21.8520           L5:gamma 30 0
101 2MASS J19072251+4727464 BD* 19 07 22.51416 +47 27 46.4328           L6 2 0
102 2MASS J20120376+6726056 BD* 20 12 03.761 +67 26 05.69           L7: 5 0
103 2MASS J20153059-4215419 BD* 20 15 30.59664 -42 15 41.9832           L7: 2 0
104 2MASS J20182598-3322053 BD* 20 18 25.98264 -33 22 05.3076           L3 1 0
105 2MASS J20490268-7456124 BD* 20 49 02.68992 -74 56 12.4188           L7: 2 0
106 2MASS J20520174-2043119 BD* 20 52 01.740 -20 43 11.92           L8 3 0
107 SIPS J2130-0845 BD* 21 30 44.6489028062 -08 45 20.574092550       19.784 17.351 L1 51 1
108 2MASSW J2148162+400359 BD* 21 48 16.2986589335 +40 03 59.331851811           L7 80 0
109 2MASS J21512543-2441000 BD* 21 51 25.43136 -24 41 00.0600       21.831 19.252 L3 19 0
110 2MASS J21543454-1055308 BD* 21 54 34.54272 -10 55 30.8424           L5 22 0
111 2MASSI J2158045-155009 BD* 21 58 04.5716969232 -15 50 09.793729140       20.771 18.582 L4 59 0
112 2MASS J22443167+2043433 BD* 22 44 31.67376 +20 43 43.3020           L6-L8gamma 114 0
113 2MASS J22533287-2539475 BD* 22 53 32.87136 -25 39 47.5488           L5 2 0
114 2MASS J23230720+0541141 BD* 23 23 07.20744 +05 41 14.1504           L8 3 0
115 2MASS J23245351+5035247 BD* 23 24 53.51016 +50 35 24.7164           L 1 0
116 2MASS J23333328+0251267 BD* 23 33 33.28464 +02 51 26.7264           L6 2 0
117 2MASS J23433470-3646021 BD* 23 43 34.70640 -36 46 02.1972           L3-L6 11 0
118 2MASS J23542220-0811289 BD* 23 54 22.20912 -08 11 28.9212           L5 7 0
119 NAME Argus Association As* ~ ~           ~ 266 0
120 NAME Coma Berenices Moving Group MGr ~ ~           ~ 103 0
121 NAME Octans Association As* ~ ~           ~ 101 0
122 NAME Carina Association As* ~ ~           ~ 188 1
123 NAME Carina-near Moving Group MGr ~ ~           ~ 118 0

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