CDS

2006AJ....131.2722C

Query : 2006AJ....131.2722C

2006AJ....131.2722C - Astron. J., 131, 2722-2736 (2006/May-0)

Seventy-one new L and T dwarfs from the Sloan Digital Sky Survey.

CHIU K., FAN X., LEGGETT S.K., GOLIMOWSKI D.A., ZHENG W., GEBALLE T.R., SCHNEIDER D.P. and BRINKMANN J.

Abstract (from CDS):

We present near-infrared observations of 71 newly discovered L and T dwarfs, selected from imaging data of the Sloan Digital Sky Survey (SDSS) using the i-dropout technique. Sixty-five of these dwarfs have been classified spectroscopically according to the near-infrared L dwarf classification scheme of Geballe et al. and the unified T dwarf classification scheme of Burgasser et al. The spectral types of these dwarfs range from L3 to T7 and include the latest types yet found in the SDSS. Six of the newly identified dwarfs are classified as early to mid-L dwarfs according to their photometric near-infrared colors, and two others are classified photometrically as M dwarfs. We also present new near-infrared spectra for five previously published SDSS L and T dwarfs, and one L dwarf and one T dwarf discovered by Burgasser et al. from the Two Micron All Sky Survey. The new SDSS sample includes 27 T dwarfs and 30 dwarfs with spectral types spanning the complex L-T transition (L7-T3). We continue to see a large (∼0.5 mag) spread in J-H for L3-T1 types and a similar spread in H-K for all dwarfs later than L3. This color dispersion is probably due to a range of grain sedimentation properties, metallicity, and gravity. We also find L and T dwarfs with unusual colors and spectral properties that may eventually help to disentangle these effects.

Abstract Copyright: ∼

Journal keyword(s): Infrared: Stars - Stars: Low-Mass, Brown Dwarfs

VizieR on-line data: <Available at CDS (J/AJ/131/2722): table1.dat table2.dat table3.dat table4.dat table5.dat>

Simbad objects: 87

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Number of rows : 87
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023 		#notes
1 2MASS J00025097+2454141 BD* 00 02 50.97576 +24 54 14.1696           L5.5 7 0
2 2MASS J00345157+0523050 BD* 00 34 51.57696 +05 23 05.0964           T6.5 33 0
3 2MASS J00360925+2413434 BD* 00 36 09.25776 +24 13 43.4064           L6 5 0
4 2MASS J01191207+2403317 BD* 01 19 12.071 +24 03 31.71           T0.0+T4.0 9 0
5 2MASS J02060880+2235593 BD* 02 06 08.80008 +22 35 59.3340           L4.5 10 0
6 2MASS J02425693+2123204 BD* 02 42 56.93928 +21 23 20.4288           L4 5 0
7 2MASS J02474978-1631132 BD* 02 47 49.78680 -16 31 13.2780           T0.0+T7.0 14 0
8 2MASS J03255322+0425406 BD* 03 25 53.22288 +04 25 40.6920           T5.5 18 0
9 2MASS J03510423+4810477 BD* 03 51 04.23096 +48 10 47.7804           L6.5+T5.0 13 0
10 2MASS J06540564+6528051 BD* 06 54 05.64120 +65 28 05.1672           L5.5 9 0
11 2MASS J07392203+6615039 BD* 07 39 22.03560 +66 15 03.9276           T1.5 7 0
12 2MASS J07400712+2009216 BD* 07 40 07.12008 +20 09 21.6900           L6.0 8 0
13 2MASS J07565631+2314577 BD* 07 56 56.31432 +23 14 57.7896           L3.5 8 0
14 2MASS J07584037+3247245 BD* 07 58 40.3517739525 +32 47 23.984796389           T0.0+T3.5 45 0
15 2MASS J08053189+4812330 BD* 08 05 31.8496436040 +48 12 33.131831320           L4+T5 41 0
16 2MASS J08095903+4434216 BD* 08 09 59.03832 +44 34 21.6120           L6.0 19 0
17 2MASS J08203013+1037372 BD* 08 20 30.13992 +10 37 37.2324           L9.5 8 0
18 2MASS J08350622+1953050 BD* 08 35 06.22944 +19 53 05.0532           L5 37 0
19 2MASS J08511627+1817302 BD* 08 51 16.27584 +18 17 30.2316           L6 11 0
20 2MASS J08583467+3256275 BD* 08 58 34.67184 +32 56 27.5640           T1 22 0
21 2MASS J09090085+6525275 BD* 09 09 00.85512 +65 25 27.5664           T1.5+T2.5 15 0
22 2MASS J09310955+0327331 BD* 09 31 09.55248 +03 27 33.1272           L7.5 12 0
23 2MASS J10071185+1930563 BD* 10 07 11.85744 +19 30 56.3112           L9 12 0
24 2MASS J10255227+3212349 BD* 10 25 52.27584 +32 12 34.9956           L9 16 0
25 2MASS J10275145+4009315 LM* 10 27 51.46 +40 09 31.6           ~ 1 0
26 2MASS J10332186+4005499 BD* 10 33 21.86712 +40 05 49.9272           L6 10 0
27 2MASS J10393137+3256263 BD* 10 39 31.37784 +32 56 26.3580           L7.0+T4.0 15 0
28 2MASS J10433508+1213149 BD* 10 43 35.08368 +12 13 14.9700           L9 29 0
29 2MASS J10482926+0919373 BD* 10 48 29.26296 +09 19 37.3872           T2.5 13 0
30 2MASS J10521350+4422559 BD* 10 52 13.50504 +44 22 55.9128           L6.5+T1.5 33 0
31 2MASS J11101001+0116130 BD* 11 10 10.01064 +01 16 13.0872           T5.5 75 0
32 2MASS J11132009+3430582 BD* 11 13 20.09520 +34 30 58.2264           L3 6 0
33 2MASS J11211858+4332464 BD* 11 21 18.58200 +43 32 46.4856           L5 10 0
34 SDSS J114220.63+114440.3 LM* 11 42 20.62 +11 44 40.3           ~ 1 0
35 SDSS J115700.50+061105.2 BD* 11 57 00.57528 +06 11 04.1604           T1.5 10 0
36 2MASS J12060248+2813293 BD* 12 06 02.48952 +28 13 29.3160           T2.0+T4.5 19 0
37 2MASS J12095613-1004008 BD* 12 09 56.13096 -10 04 00.8076           T2+T7.5 58 0
38 2MASS J12144089+6316434 BD* 12 14 40.89984 +63 16 43.4352           T3.5 14 0
39 2MASS J12165918+3003054 BD* 12 16 59.18568 +30 03 05.4684           L4 5 0
40 2MASS J12195156+3128497 BD* 12 19 51.56064 +31 28 49.7136           L9 18 0
41 SDSS J123330.63+423948.6 BD? 12 33 30.63216 +42 39 48.6108           ~ 1 0
42 2MASS J12501166+3925582 BD* 12 50 11.66856 +39 25 58.2060           T4.0 12 0
43 2MASS J13314894-0116500 BD* 13 31 48.9202570553 -01 16 51.118063680           L6V 39 0
44 2MASS J13420311+1340222 BD* 13 42 03.11088 +13 40 22.2960           L6 10 0
45 SDSS J134403.83+083950.9 BD* 13 44 03.789 +08 39 51.04           T0.0 3 0
46 2MASS J13452562+5216337 BD* 13 45 25.62 +52 16 33.8           L3 5 0
47 2MASS J13585269+3747137 BD* 13 58 52.69176 +37 47 13.7328           T4.5 11 0
48 2MASS J14002320+4338222 BD* 14 00 23.20392 +43 38 22.2252           L8 11 0
49 2MASS J14025564+0800553 BD* 14 02 55.64328 +08 00 55.3248           L8+T5? 12 0
50 2MASS J14153003+5724300 BD* 14 15 30.03456 +57 24 30.0960           L8.0+T5.0 14 0
51 2MASS J14165987+5006258 BD* 14 16 59.87328 +50 06 25.8408           L4.5 14 0
52 2MASS J14222720+2215575 BD* 14 22 27.20808 +22 15 57.5424           L5 11 0
53 SDSS J143553.24+112948.5 BD* 14 35 53.27664 +11 29 49.2864           L7.5+T6.0 12 0
54 SDSS J143945.86+304220.5 BD* 14 39 45.86232 +30 42 20.5524           T1.0+T5.0 8 0
55 2MASS J14412846+5046005 BD* 14 41 28.46856 +50 46 00.5196           L3.0 3 0
56 CFBDS J150411+102717 BD* 15 04 11.72688 +10 27 16.9128           T7.0 26 0
57 SDSS J151114.65+060742.9 BD* 15 11 14.66280 +06 07 43.1652           T2.0 35 0
58 2MASS J15150607+4436483 BD* 15 15 06.07800 +44 36 48.3084           L7.5 11 0
59 2MASS J15164306+3053443 BD* 15 16 43.06536 +30 53 44.3436           L8.0+L9.5 33 0
60 2MASS J15203974+3546210 BD* 15 20 39.74688 +35 46 21.0396           T0.0 25 0
61 2MASS J15210327+0131426 BD* 15 21 03.27096 +01 31 42.6900           T3.0 21 0
62 2MASS J15341711+1615463 BD* 15 34 17.11008 +16 15 46.3680           T1.5+T5.5 22 0
63 2MASS J15345325+1219495 BD* 15 34 53.2688675472 +12 19 49.340326224           L3 15 0
64 2MASS J15400942+3742316 BD* 15 40 09.42240 +37 42 31.6008           L9.0 13 0
65 2MASS J15450901+3555271 BD* 15 45 09.01392 +35 55 27.1128           L7.5 11 0
66 2MASS J15484912+1722359 BD* 15 48 49.01760 +17 22 35.3712           L4.5 12 0
67 2MASS J16173168+4019003 BD* 16 17 31.68864 +40 19 00.3684           L6.5 6 0
68 2MASS J16205116+3237322 BD* 16 20 51.16656 +32 37 32.2644           L6.0 3 0
69 2MASS J16225533+1159238 BD* 16 22 55.33584 +11 59 23.8920           L4.5 7 0
70 2MASS J16242936+1251451 LM* 16 24 29.36 +12 51 45.1           M9 2 0
71 2MASS J16283855+2308241 BD* 16 28 38.55000 +23 08 24.1980           T7.0 20 0
72 2MASS J16302295+0818221 BD* 16 30 22.95864 +08 18 22.1616           T5.5 11 0
73 2MASS J16335933-0640552 BD* 16 33 59.33184 -06 40 55.2396           L5.5 12 0
74 2MASS J16360752+2336011 BD* 16 36 07.53 +23 36 01.1           L1 2 0
75 SDSS J164916.89+464340.0 BD* 16 49 16.89 +46 43 40.0           L4.5 4 0
76 2MASS J17000550+1541283 BD? 17 00 05.50416 +15 41 28.3416           ~ 2 0
77 2MASS J17114716+2331310 BD* 17 11 47.16408 +23 31 31.0008           L3.5 4 0
78 SDSS J171902.15+373453.6 BD? 17 19 02.14824 +37 34 53.6844           ~ 1 0
79 2MASS J17310140+5310476 BD* 17 31 01.40784 +53 10 47.6148           L5 9 0
80 2MASS J20431769-1551031 BD* 20 43 17.69112 -15 51 03.1644           L9.5 13 0
81 SDSS J205235.31-160929.8 BD* 20 52 35.31672 -16 09 29.8620           L8.5+T1.5 21 0
82 2MASSW J2101154+175658 BD* 21 01 15.44112 +17 56 58.6860           L7+L8 29 0
83 CFBDS J212413+010002 BD* 21 24 13.87968 +00 59 59.9172           T6 23 0
84 2MASS J21315444-0119374 BD* 21 31 54.44 -01 19 37.4           L9.5 10 0
85 2MASS J21324036+1029494 BD* 21 32 40.36104 +10 29 49.4808           L5.5 10 0
86 2MASS J21335274+1018410 BD* 21 33 52.74144 +10 18 41.0184           L3.5 5 0
87 2MASS J23280459-1038452 BD* 23 28 04.59576 -10 38 45.2472           L2 10 0

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2023.09.21-13:54:44

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