2003AJ....125..850B


Query : 2003AJ....125..850B

2003AJ....125..850B - Astron. J., 125, 850-857 (2003/February-0)

The 2MASS wide-field T dwarf search. I. Discovery of a bright T dwarf within 10 parsecs of the sun.

BURGASSER A.J., KIRKPATRICK J.D., McELWAIN M.W., CUTRI R.M., BURGASSER A.J. and SKRUTSKIE M.F.

Abstract (from CDS):

We present the discovery of a bright (J=13.94±0.03) T dwarf, 2MASS 1503+2525, identified in a new, wide-field search for T dwarfs using the recently completed Two Micron All Sky Survey (2MASS). The 1-2.5 µm spectrum of this object exhibits the strong H2O and CH4bands characteristic of mid- and late-type T dwarfs, and we derive a spectral type of T5.5 using both the Burgasser et al. and the Geballe et al. classification schemes. Based on its spectral type and the absolute magnitudes of known T dwarfs, we estimate the distance of this object as 8±3 pc if it is single, likely within 10 pc of the Sun. Our new 2MASS search, which covers 74% of the sky and greatly expands on earlier color constraints, should identify 15-25 new T dwarfs with J≤16. Combined with the 20 known members of this class that already fall within our search criteria, our new sample will provide improved statistics for such key quantities as the binary fraction and the field substellar mass function. Furthermore, multiple detections from overlapping 2MASS scans provide multiple-epoch astrometry and photometry, and we present proper motions for five T dwarfs in our sample.

Abstract Copyright:

Journal keyword(s): Infrared Radiation - Galaxy: Solar Neighborhood - stars: individual (2MASS J15031961+2525196) - Stars: Low-Mass, Brown Dwarfs

CDS comments: par. 4, UKIRT CGS4 not identified.

Simbad objects: 38

goto Full paper

goto View the references in ADS

Number of rows : 38
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 L 362-29 B BD* 00 04 34.8641153471 -40 44 06.464450691       19.61 16.88 L5+L5 96 0
2 NGC 104 GlC 00 24 05.359 -72 04 53.20   5.78 4.09     ~ 3653 0
3 LSPM J0036+1821 BD* 00 36 16.1119130763 +18 21 10.291990145       18.451 16.053 L3.5 190 0
4 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 9861 1
5 ULAS J022637.55+005154.3 BD* 02 26 37.55520 +00 51 54.3816           T3 8 0
6 2MASSI J0243137-245329 BD* 02 43 13.71792 -24 53 29.8356           T6.0 43 0
7 DENIS J025503.3-470049 BD* 02 55 03.6945042584 -47 00 51.345365454     22.921 19.906 17.454 L9 128 0
8 2MASSI J0415195-093506 BD* 04 15 19.54368 -09 35 06.6732           T8.0 151 0
9 2MASSI J0423485-041403 BD* 04 23 48.5838371891 -04 14 03.228116841           L6.5+T2 108 0
10 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 15472 1
11 NAME Orion Nebula Cluster OpC 05 35.0 -05 29           ~ 2067 1
12 [BZR99] S Ori 70 BD* 05 38 10.10 -02 36 26.0           T6-7 46 0
13 2MASS J05591914-1404488 BD* 05 59 19.1884616785 -14 04 49.215388622           T4.5 136 0
14 HD 42581B BD* 06 10 34.80 -21 52 00.0           T6.5 469 0
15 2MASSI J0727182+171001 BD* 07 27 18.24600 +17 10 01.2072           T7.0 77 0
16 2MASSI J0755480+221218 BD* 07 55 47.95488 +22 12 16.9416           T5.2 25 0
17 2MASS J08354256-0819237 BD* 08 35 42.5323299335 -08 19 23.389468248           L6.5 58 0
18 2MASS J09261537+5847212 BD* 09 26 15.37752 +58 47 21.2280           T3.5+T5 29 0
19 2MASSI J0937347+293142 BD* 09 37 34.87968 +29 31 40.9908           T6 80 0
20 2MASSW J1047539+212423 BD* 10 47 53.85456 +21 24 23.4684           T6.5 73 0
21 NTTDF J1205-0744 BD* 12 05 20.21 -07 44 01.0           T7 12 1
22 2MASS J12171110-0311131 BD* 12 17 11.10288 -03 11 13.1748           T7.5 76 0
23 2MASS J12373919+6526148 BD* 12 37 39.19632 +65 26 14.8092           T6.5 64 0
24 2MASS J12545393-0122474 BD* 12 54 53.9040607346 -01 22 47.399401142           T2e: 136 0
25 2MASS J13464634-0031501 BD* 13 46 46.34496 -00 31 50.1312           T6 69 0
26 GJ 570 D BD* 14 57 14.96256 -21 21 47.7504           T8 198 1
27 2MASS J15031961+2525196 BD* 15 03 19.6105599007 +25 25 19.773297519           T5.5 56 0
28 V* EX Boo LP* 15 03 27.2792984123 +25 25 37.702977240   11.10 9.63     M5 9 0
29 HD 133460 SB* 15 03 49.2859988342 +26 02 19.404623007   7.84 7.28     F8V 38 0
30 2MASSW J1507476-162738 BD* 15 07 47.6756748763 -16 27 40.118410414     22.136 18.928 16.579 L5V 176 0
31 * eta CrB C BD* 15 23 22.63488 +30 14 56.2092           L8V 98 1
32 2MASSI J1534498-295227 BD* 15 34 49.84080 -29 52 27.4188           T4.5+T5 60 0
33 2MASSI J1546271-332511 BD* 15 46 27.18600 -33 25 11.1828           T5.7 28 1
34 2MASS J15530228+1532369 BD* 15 53 02.28072 +15 32 36.9132           T6.5+T7.5 41 0
35 2MASS J16241436+0029158 BD* 16 24 14.36712 +00 29 15.8172           T6V 133 0
36 2MASSI J2254188+312349 BD* 22 54 18.92016 +31 23 49.8300           T5.0 59 0
37 2MASSI J2339101+135230 BD* 23 39 10.25160 +13 52 28.4772           T5.4 23 0
38 2MASSI J2356547-155310 BD* 23 56 54.77040 -15 53 11.1336           T5.8 39 0

To bookmark this query, right click on this link: simbad:objects in 2003AJ....125..850B and select 'bookmark this link' or equivalent in the popup menu


2021.08.03-13:14:26

© Université de Strasbourg/CNRS

    • Contact