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| Query : 2004ApJ...608L.113G |
2004ApJ...608L.113G - Astrophys. J., 608, L113-L115 (2004/June-3)
A Chandra observation of a TW Hydrae association brown dwarf.
GIZIS J.E. and BHARAT R.
Abstract (from CDS):
We present Chandra observations of the young brown dwarf 2MASSW J1207334-393254, which is a probable member of the TW Hya association. Although this substellar object has strong Hα emission, it has no detected X-ray flux in a 50 ks ACIS-S observation. We place a conservative upper limit of 1.2x1026 ergs/s on its X-ray luminosity. We compare our M8 target to the similar mass object TWA 5B, which has weaker Hα emission but strong X-ray emission. We argue our results are consistent with the notion that 2MASSW J1207334-393254 is interacting with a disk.
Abstract Copyright: ∼
Journal keyword(s): Galaxy: Open Clusters and Associations: Individual: Name: TW Hydrae - Stars: Activity - Stars: Low-Mass, Brown Dwarfs
CDS comments: Parag. 3 : BRI 0021 = BRI 0021-02
Simbad objects: 10
| Number of rows : 10 |
| 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 | V* DY Psc | BY* | 00 24 24.6317407560 | -01 58 19.954412004 | 19.42 | 17.301 | 15.022 | M9.5V | 220 | 1 | ||
| 2 | LP 944-20 | LM* | 03 39 35.2523500210 | -35 25 43.641996333 | 18.69 | 16.39 | 13.288 | M9.5Ve | 308 | 0 | ||
| 3 | LP 666-9 | BD* | 08 53 36.1604798120 | -03 29 32.197505547 | 18.959 | 16.781 | 14.487 | M9Ve | 274 | 1 | ||
| 4 | V* TW Hya | TT* | 11 01 51.9053285064 | -34 42 17.033218380 | 11.94 | 10.50 | 10.626 | 9.18 | K6Ve | 2144 | 1 | |
| 5 | NAME TW Hya Association | As* | 11 01.9 | -34 42 | ~ | 1018 | 0 | |||||
| 6 | CD-33 7795B | LM* | 11 31 55.2565351569 | -34 36 25.242585993 | 20.40 | 15.8 | M8.5/9e | 131 | 0 | |||
| 7 | TWA 26 | LM* | 11 39 51.1378374696 | -31 59 21.443660124 | 15.83 | M8e | 125 | 0 | ||||
| 8 | TWA 27 | LM* | 12 07 33.4675524840 | -39 32 54.016625184 | 19.95 | 17.99 | 15.88 | M8IVe | 376 | 0 | ||
| 9 | LP 271-25 | LM* | 14 28 43.2275214164 | +33 10 39.259309081 | 21.2 | 17.8 | M9Ve | 262 | 0 | |||
| 10 | VB 10 | PM* | 19 16 57.6109547886 | +05 09 01.600923413 | 17.30 | M8V | 499 | 1 |
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