2013MNRAS.433..457B


C.D.S. - SIMBAD4 rel 1.7 - 2019.11.22CET09:50:41

2013MNRAS.433..457B - Mon. Not. R. Astron. Soc., 433, 457-497 (2013/July-3)

76 T dwarfs from the UKIDSS LAS: benchmarks, kinematics and an updated space density.

BURNINGHAM B., CARDOSO C.V., SMITH L., LEGGETT S.K., SMART R.L., MANN A.W., DHITAL S., LUCAS P.W., TINNEY C.G., PINFIELD D.J., ZHANG Z., MORLEY C., SAUMON D., ALLER K., LITTLEFAIR S.P., HOMEIER D., LODIEU N., DEACON N., MARLEY M.S., VAN SPAANDONK L., BAKER D., ALLARD F., ANDREI A.H., CANTY J., CLARKE J., DAY-JONES A.C., DUPUY T., FORTNEY J.J., GOMES J., ISHII M., JONES H.R.A., LIU M., MAGAZZU A., MAROCCO F., MURRAY D.N., ROJAS-AYALA B. and TAMURA M.

Abstract (from CDS):

We report the discovery of 76 new T dwarfs from the UKIRT Infrared Deep Sky Survey (UKIDSS) Large Area Survey (LAS). Near-infrared broad- and narrow-band photometry and spectroscopy are presented for the new objects, along with Wide-field Infrared Survey Explorer (WISE) and warm-Spitzer photometry. Proper motions for 128 UKIDSS T dwarfs are presented from a new two epoch LAS proper motion catalogue. We use these motions to identify two new benchmark systems: LHS 6176AB, a T8p+M4 pair and HD 118865AB, a T5.5+F8 pair. Using age constraints from the primaries and evolutionary models to constrain the radii, we have estimated their physical properties from their bolometric luminosity. We compare the colours and properties of known benchmark T dwarfs to the latest model atmospheres and draw two principal conclusions. First, it appears that the H - [4.5] and J - W2 colours are more sensitive to metallicity than has previously been recognized, such that differences in metallicity may dominate over differences in Teff when considering relative properties of cool objects using these colours. Secondly, the previously noted apparent dominance of young objects in the late-T dwarf sample is no longer apparent when using the new model grids and the expanded sample of late-T dwarfs and benchmarks. This is supported by the apparently similar distribution of late-T dwarfs and earlier type T dwarfs on reduced proper motion diagrams that we present. Finally, we present updated space densities for the late-T dwarfs, and compare our values to simulation predictions and those from WISE.

Abstract Copyright: © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2013)

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

VizieR on-line data: <Available at CDS (J/MNRAS/433/457): table1.dat table2.dat table3.dat table4.dat table5.dat>

CDS comments: p.473: BD+01 2930AB is a misprint for BD+01 2920AB. p.481: SDSS 1416+1338B is a misprint for SDSS 1416+1348B. HIP 73786B is GJ 576B in Simbad. LHS 2803B is WDS J13481-1345B in Simbad.

Simbad objects: 180

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Number of rows : 180

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 ULAS J000734.90+011247.1 Ro* 00 07 34.90 +01 12 47.1           T7 2 0
2 * 54 Psc B BD* 00 39 18.91 +21 15 16.8           T7.5 61 1
3 CFBDS J005910-011401 BD* 00 59 10.83 -01 14 01.3           T8.5 35 0
4 ULAS J012735.66+153905.9 Ro* 01 27 35.66 +15 39 05.9           T6.5 2 0
5 ULAS J012855.07+063357.0 Ro* 01 28 55.07 +06 33 57.0           T6 3 0
6 ULAS J013017.79+080453.9 Ro* 01 30 17.79 +08 04 53.9           T6 2 0
7 CFBDS J013302+023128 Ro* 01 33 02.27 +02 31 28.4           T8 4 0
8 ULAS J013950.51+150307.6 Ro* 01 39 50.51 +15 03 07.6           T7 2 0
9 ULAS J020013.18+090835.2 Ro* 02 00 13.18 +09 08 35.2           T6 2 0
10 ULAS J022603.18+070231.4 Ro* 02 26 03.18 +07 02 31.4           T7 1 0
11 ULAS J024557.88+065359.4 Ro* 02 45 57.88 +06 53 59.4           T7 1 0
12 ULAS J025545.28+061655.7 Ro* 02 55 45.284 +06 16 55.77           T6.0 4 0
13 CFBDS J030135-161418 BD* 03 01 35.11 -16 14 18.0           ~ 5 0
14 2MASS J03255322+0425406 BD* 03 25 53.22 +04 25 40.7           T5.5 15 0
15 ULAS J032920.22+043024.5 Ro* 03 29 20.154 +04 30 24.39           T7.0 4 0
16 NAME Taurus Dark Cloud SFR 04 41.0 +25 52           ~ 3323 0
17 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
18 NAME Trapezium Cluster As* 05 35 16.5 -05 23 14           ~ 1434 1
19 2MASS J07290002-3954043 BD* 07 29 00.025 -39 54 04.40           T8 24 0
20 2MASS J07414920+2351275 BD* 07 41 49.21 +23 51 27.5           T5 15 0
21 ULAS J074502.79+233240.3 Ro* 07 45 02.79 +23 32 40.3           T8.5 2 0
22 ULAS J074502.79+245516.3 NIR 07 45 02.79 +24 55 16.3           ~ 1 0
23 ULAS J074616.98+235532.2 Ro* 07 46 16.98 +23 55 32.2           T7 1 0
24 ULAS J074720.07+245516.3 Ro* 07 47 20.07 +24 55 16.3           T6.5 1 0
25 EQ J0750+2725 BD* 07 50 03.84 +27 25 44.8           T8.5 9 0
26 2MASSI J0755480+221218 BD* 07 55 47.955 +22 12 16.94           T5.2 25 0
27 ULAS J075829.83+222526.7 Ro* 07 58 29.83 +22 25 26.7           T6.5 1 0
28 ULAS J075937.75+185555.0 Ro* 07 59 37.75 +18 55 55.0           T6 2 0
29 ULAS J080048.27+190823.8 NIR 08 00 48.27 +19 08 23.8           ~ 1 0
30 ULAS J080918.41+212615.2 Ro* 08 09 18.41 +21 26 15.2           T8 1 0
31 BD+75 325 HS* 08 10 49.4901623070 +74 57 57.936226530 8.002 9.23 9.50 9.698 9.884 sdO5 230 0
32 ULAS J081110.86+252931.8 Ro* 08 11 10.86 +25 29 31.8           T7 2 0
33 ULAS J081407.51+245200.9 Ro* 08 14 07.51 +24 52 00.9           T5 1 0
34 ULAS J081507.26+271119.2 Ro* 08 15 07.26 +27 11 19.2           T7 1 0
35 ULAS J081918.58+210310.8 Ro* 08 19 18.579 +21 03 11.25           T5.5 3 0
36 ULAS J081948.09+073323.3 PM* 08 19 48.08 +07 33 23.3           T6p 5 0
37 ULAS J082155.56+250939.8 Ro* 08 21 55.56 +25 09 39.8           T4.5 3 0
38 ULAS J082327.46+002424.4 BD* 08 23 27.46 +00 24 24.4           T4 2 0
39 ULAS J082707.67-020408.2 BD* 08 27 07.67 -02 04 08.2           T5.5 9 0
40 2MASS J08304878+0128311 BD* 08 30 48.784 +01 28 31.15           T4.5 19 0
41 ULAS J083756.19-004156.0 BD* 08 37 56.19 -00 41 56.0           T3 2 0
42 ULAS J084036.72+075933.6 PM* 08 40 36.72 +07 59 33.6           T4.5 2 0
43 ULAS J084211.68+093611.9 PM* 08 42 11.68 +09 36 11.9           T5.5 3 0
44 ULAS J084743.93+035040.2 BD* 08 47 43.93 +03 50 40.2           T5.7: 2 0
45 ULAS J085139.03+005340.9 PM* 08 51 39.03 +00 53 40.9           T4 3 0
46 ULAS J085342.94+000651.8 PM* 08 53 42.94 +00 06 51.8           T6p 4 0
47 ULAS J090116.23-030635.0 BD* 09 01 16.23 -03 06 35.0           T7.5 10 0
48 ULAS J091309.55-003136.9 NIR 09 13 09.55 -00 31 36.9           ~ 1 0
49 CFBDS J092250+152741 BD* 09 22 50.12 +15 27 41.4           T7.0 6 0
50 ULAS J092608.82+040239.7 Ro* 09 26 08.82 +04 02 39.7           T6 2 0
51 WISEP J092624.75+071138.3 BD* 09 26 24.76 +07 11 40.7           T3.5 5 0
52 ULAS J092744.20+341308.7 Ro* 09 27 44.20 +34 13 08.7           T5.5 3 0
53 WISE J092906.77+040957.9 Ro* 09 29 06.77 +04 09 57.9           T5.5 9 0
54 ULAS J092926.44+110547.3 * 09 29 26.44 +11 05 47.3           T2 2 0
55 ULAS J093245.48+310206.4 Ro* 09 32 45.48 +31 02 06.4           T2 1 0
56 ULAS J093829.28-001112.6 BD* 09 38 29.28 -00 11 12.6           T4.5 2 0
57 ULAS J093951.04+001653.6 BD* 09 39 51.04 +00 16 53.6           T5.5 2 0
58 ULAS J094331.49+085849.2 PM* 09 43 31.49 +08 58 49.2           T5p 2 0
59 ULAS J094349.60+094203.4 PM* 09 43 49.60 +09 42 03.4           T4.5p 2 0
60 ULAS J094516.39+075545.6 BD* 09 45 16.170 +07 55 46.30           T5.5 4 0
61 ULAS J094806.06+064805.0 BD* 09 48 06.06 +06 48 05.0           T7 7 0
62 NAME LHS 6176B BD* 09 50 47.28 +01 17 34.3           T8p 12 1
63 G 48-43 PM* 09 50 49.5918796555 +01 18 13.626655217   15.2 13.88 12.4   M4 14 0
64 ** LUH 8AC ** 09 50 49.6 +01 18 14           ~ 1 0
65 ULAS J095429.91+062309.9 Ro* 09 54 29.90 +06 23 09.6           T5 4 0
66 ULAS J095829.86-003932.0 BD* 09 58 29.86 -00 39 32.0           T5.5 3 0
67 CFBDS J100113+022622 BD* 10 01 13.04 +02 26 22.4           T5 3 0
68 ULAS J100759.90-010031.1 BD* 10 07 59.90 -01 00 31.1           T5.5 4 0
69 ULAS J101243.53+102101.7 BD? 10 12 43.54 +10 21 01.7           T5.5 4 0
70 ULAS J101721.40+011817.9 BD* 10 17 21.40 +01 18 17.9           T8p 8 0
71 ULAS J101821.78+072547.1 BD* 10 18 21.78 +07 25 47.1           T5 7 0
72 ULAS J102144.87+054446.1 Ro* 10 21 44.87 +05 44 46.1           T6 2 0
73 ULAS J102305.44+044739.2 Ro* 10 23 05.44 +04 47 39.2           T6.5 1 0
74 ULAS J102940.52+093514.6 Ro* 10 29 40.52 +09 35 14.6           T8 4 0
75 ULAS J103434.52-001553.0 PM* 10 34 34.52 -00 15 53.0           T6.5p 3 0
76 HD 92245 * 10 38 50.4158001549 -12 26 37.046782978   6.023 6.045     A0V 34 0
77 ULAS J104224.20+121206.8 Ro* 10 42 24.20 +12 12 06.8           T7.5 3 0
78 TYC 842-1185-1 PM* 10 42 57.6517384956 +10 38 39.497331851   12.06 11.41     ~ 1 0
79 ULAS J104355.37+104803.4 Ro* 10 43 55.37 +10 48 03.4           T8 2 0
80 ULAS J105134.32-015449.8 Ro* 10 51 34.32 -01 54 49.8           T6 2 0
81 ULAS J105235.42+001632.7 PM* 10 52 35.42 +00 16 32.7           T5 2 0
82 ULAS J105334.64+015719.7 Ro* 10 53 34.64 +01 57 19.7           T6.5 2 0
83 2MASS J11101001+0116130 BD* 11 10 10.011 +01 16 13.09           T5.5 60 0
84 ULAS J111127.77+051855.5 Ro* 11 11 27.77 +05 18 55.5           T4.5 1 0
85 ULAS J113717.17+112657.2 NIR 11 37 17.17 +11 26 57.2           ~ 1 0
86 ULAS J114925.58-014343.2 PM* 11 49 25.58 -01 43 43.2           T5 2 0
87 ULAS J115038.79+094942.9 BD* 11 50 38.79 +09 49 42.9           T6.5p 7 0
88 ULAS J115229.67+035927.2 Ro* 11 52 29.68 +03 59 27.3           T6 4 0
89 ULAS J115239.94+113407.6 Ro* 11 52 39.94 +11 34 07.6           ~ 1 0
90 WISEP J115323.23-014828.0 BD* 11 53 38.74 -01 47 24.1           T6 4 0
91 ULAS J115508.39+044502.3 Ro* 11 55 08.39 +04 45 02.3           T7 1 0
92 ULAS J115718.02-013923.9 PM* 11 57 18.02 -01 39 23.9           T5 2 0
93 ULAS J115759.04+092200.7 BD* 11 57 59.04 +09 22 00.7           T2.5 6 0
94 WISEP J120257.02+090158.1 BD* 12 02 57.05 +09 01 58.8           T5 5 0
95 ULAS J120444.67-015034.8 Ro* 12 04 44.67 -01 50 34.9           T5.5 3 0
96 ULAS J120621.03+101802.9 Ro* 12 06 21.03 +10 18 02.9           T5 1 0
97 ULAS J120744.65+133902.7 PM* 12 07 44.65 +13 39 02.7           T6 4 0
98 ULAS J121226.80+101007.4 Ro* 12 12 26.80 +10 10 07.4           T5 1 0
99 ULAS J122343.35-013100.7 Ro* 12 23 43.35 -01 31 00.7           T6 2 0
100 ULAS J123153.60+091205.4 PM* 12 31 53.60 +09 12 05.4           T4.5p 2 0
101 ULAS J123327.45+121952.2 PM* 12 33 27.45 +12 19 52.2           T3.5 5 0
102 BD+25 2534 HS* 12 37 23.5157891619 +25 03 59.871049394 9.117 10.26 10.59 10.642 10.809 sdB1(k) 202 0
103 ULAS J123828.51+095351.3 BD* 12 38 28.51 +09 53 51.3           T8.5 16 0
104 ULAS J123903.75+102518.6 PM* 12 39 03.75 +10 25 18.6           T0 2 0
105 ULAS J124804.56+075904.0 PM* 12 48 04.56 +07 59 04.0           T7 4 0
106 ULAS J125446.35+122215.7 BD* 12 54 46.35 +12 22 15.7           T5.4: 2 0
107 ULAS J125708.07+110850.4 PM* 12 57 08.07 +11 08 50.4           T4.5 2 0
108 ULAS J125835.97+030736.1 Ro* 12 58 35.97 +03 07 36.1           T5 1 0
109 ULAS J125939.44+293322.4 Ro* 12 59 39.44 +29 33 22.4           T5 2 0
110 BD+13 2618C BD* 13 00 41.936 +12 21 14.72         23.28 T8.5p 93 0
111 BD+13 2618 Fl* 13 00 46.5602816848 +12 22 32.716799085 12.314 11.233 9.750 8.785 7.653 M0V 294 1
112 ULAS J130217.21+130851.2 BD* 13 02 17.21 +13 08 51.2           T8.5 10 0
113 ULAS J130227.54+143428.0 Ro* 13 02 27.54 +14 34 28.0           T4.5 2 0
114 ULAS J130303.54+001627.7 BD* 13 03 03.54 +00 16 27.7           T5.5 4 0
115 TYC 884-458-1 PM* 13 14 51.9729735220 +08 21 33.067405155   10.59 9.89     ~ 3 0
116 ULAS J131508.42+082627.4 BD* 13 15 08.42 +08 26 27.4           T7.5 8 0
117 ULAS J131943.77+120900.2 PM* 13 19 43.77 +12 09 00.2           T5p 4 0
118 ULAS J132048.12+102910.6 PM* 13 20 48.12 +10 29 10.6           T5 3 0
119 ULAS J132605.18+120009.9 BD? 13 26 05.18 +12 00 09.9           T6p 6 0
120 NLTT 34489 PM* 13 34 05.8496325108 +11 23 51.874248574   20.0   18.2   ~ 2 0
121 ULAS J133502.11+150653.5 Ro* 13 35 02.11 +15 06 53.5           T6 2 0
122 ULAS J133553.45+113005.2 BD* 13 35 53.45 +11 30 05.2           T8.5 34 0
123 ULAS J133828.69-014245.4 Ro* 13 38 28.69 -01 42 45.4           T7.5 1 0
124 ULAS J133933.64-005621.1 Ro* 13 39 33.64 -00 56 21.1           T7 1 0
125 NAME HD 118865 System ** 13 39 34.3 +01 05 18           ~ 1 0
126 HD 118865 PM* 13 39 34.3256614744 +01 05 18.126364858   8.52 7.98     F7V 21 0
127 HD 118865B Ro* 13 39 43.790 +01 04 36.40           T5 3 0
128 2MASS J13464634-0031501 BD* 13 46 46.345 -00 31 50.13           T6.0 68 0
129 LP 738-14 B BD* 13 48 02.908 -13 44 07.17           T5.5 9 0
130 ULAS J134940.81+091833.3 PM* 13 49 40.81 +09 18 33.3           T7 4 0
131 ULAS J135607.41+085345.2 PM* 13 56 07.41 +08 53 45.2           T5 2 0
132 ULAS J141623.94+134836.3 BD* 14 16 23.94 +13 48 36.3           T7.5p 34 1
133 ULAS J141756.22+133045.8 Ro* 14 17 56.248 +13 30 45.57           T5.5 6 0
134 ULAS J142145.63+013619.0 Ro* 14 21 45.63 +01 36 19.0           T4.5 1 0
135 HD 126053 PM* 14 23 15.2847534665 +01 14 29.641784590 6.98 6.90 6.27 5.71 5.39 G1.5V 354 0
136 HD 126053B BD* 14 23 20.79 +01 16 38.2           T8 18 0
137 ULAS J142536.35+045132.3 Ro* 14 25 36.35 +04 51 32.3           T6.5 2 0
138 ULAS J144458.87+105531.1 PM* 14 44 58.87 +10 55 31.1           T5 2 0
139 ULAS J144555.24+125735.1 PM* 14 45 55.24 +12 57 35.1           T6.5 3 0
140 ULAS J144902.02+114711.4 Ro* 14 49 01.971 +11 47 12.31           T7.0 7 0
141 ULAS J145243.59+065542.9 BD* 14 52 43.59 +06 55 42.9           T4.5 5 0
142 GJ 570 D BD* 14 57 14.96 -21 21 47.8           T8 189 1
143 USNO-B1.0 0988-00251407 PM* 14 59 32.0670228761 +08 51 25.849721225   19.8   18.8   ~ 8 1
144 CFBDS J145935+085751 PM* 14 59 35.30 +08 57 51.6         17.92 T4.5 10 1
145 ULAS J150135.33+082215.2 BD* 15 01 35.33 +08 22 15.2           T4.5 3 0
146 SDSS J150411.63+102718.4 BD* 15 04 11.64 +10 27 18.4           T7 22 0
147 BD+06 2986 PM* 15 04 53.5261950182 +05 38 17.160512285 12.262 11.13 9.815 8.998 8.257 K8V 78 0
148 BD+06 2986B BD* 15 04 57.656 +05 38 00.83         23.85 T6.5 15 0
149 ULAS J150547.89+070316.6 BD* 15 05 47.89 +07 03 16.6           T4 2 0
150 ULAS J151637.89+011050.1 Ro* 15 16 37.89 +01 10 50.1           T6.5 2 0
151 EQ J1517+0529 Ro* 15 17 21.12 +05 29 29.0           T8 6 0
152 ULAS J152526.25+095814.3 PM* 15 25 26.25 +09 58 14.3           T6.5 3 0
153 CFBDS J152655+034536 BD* 15 26 55.80 +03 45 36.2           T4.0 3 0
154 ULAS J152912.23+092228.5 PM* 15 29 12.23 +09 22 28.5           T6 4 0
155 ULAS J153406.06+055643.9 Ro* 15 34 06.06 +05 56 43.9           T5 2 0
156 ULAS J153653.80+015540.6 Ro* 15 36 53.80 +01 55 40.6           T5 1 0
157 ULAS J154427.34+081926.6 BD* 15 44 27.34 +08 19 26.6           T3.5 3 0
158 ULAS J154701.84+005320.3 BD* 15 47 01.84 +00 53 20.3           T5.5 2 0
159 ULAS J154914.45+262145.6 Ro* 15 49 14.45 +26 21 45.6           T5 2 0
160 ULAS J160143.75+264623.4 Ro* 16 01 43.75 +26 46 23.4           T6.5 1 0
161 ULAS J161436.96+244230.1 Ro* 16 14 36.96 +24 42 30.1           T7 2 0
162 ULAS J161710.39+235031.4 Ro* 16 17 10.39 +23 50 31.4           T6 2 0
163 ULAS J161934.78+235829.3 Ro* 16 19 34.78 +23 58 29.3           T6 2 0
164 ULAS J161938.12+300756.4 Ro* 16 19 38.12 +30 07 56.4           T5 2 0
165 ULAS J162655.04+252446.8 Ro* 16 26 55.04 +25 24 46.8           T5 1 0
166 ULAS J163931.52+323212.7 Ro* 16 39 31.52 +32 32 12.7           T3 2 0
167 M 13 GlC 16 41 41.634 +36 27 40.75     5.8     ~ 1971 0
168 WISE J182831.08+265037.7 BD* 18 28 31.087 +26 50 37.72           Y0 39 0
169 ULAS J211616.26-010124.3 Ro* 21 16 16.26 -01 01 24.3           T6 2 0
170 Wolf 940 B BD* 21 46 38.829 -00 10 38.59           T8.5 51 0
171 ULAS J223728.91+064220.1 Ro* 22 37 28.91 +06 42 20.1           ~ 2 0
172 ULAS J230049.08+070338.0 Ro* 23 00 49.08 +07 03 38.0           T4.5 2 0
173 ULAS J231536.93+034422.7 Ro* 23 15 36.93 +03 44 22.7           T7 1 0
174 ULAS J231856.24+043328.5 Ro* 23 18 56.24 +04 33 28.5           T7.5 1 0
175 ULAS J232600.40+020139.2 Ro* 23 26 00.40 +02 01 39.2           T8 4 0
176 ULAS J232624.07+050931.6 BD* 23 26 24.07 +05 09 31.6           T5.1: 2 0
177 ULAS J233104.12+042652.6 Ro* 23 31 04.12 +04 26 52.6           T4 1 0
178 EQ J2342+0856 Ro* 23 42 28.936 +08 56 20.12           T7.0 8 0
179 ULAS J235204.62+124444.9 Ro* 23 52 04.62 +12 44 44.9           T6.5 2 0
180 ULAS J235715.98+013240.3 Ro* 23 57 15.98 +01 32 40.3           ~ 1 0

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2019.11.22-09:50:41

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