1999A&A...346L..41S


Query : 1999A&A...346L..41S

1999A&A...346L..41S - Astronomy and Astrophysics, volume 346, L41-44 (1999/6-3)

New T Tauri stars in the vicinity of TW Hydrae.

STERZIK M.F., ALCALA J.M., COVINO E. and PETR M.G.

Abstract (from CDS):

We report the discovery of four weak-line T Tauri star candidates in the vicinity of the TW Hydrae association, the closest known region of recent star formation. Three stars are probably association members. They exhibit high Lithium abundances, M spectral types, and a high level of chromospheric and coronal activity. Two of them form a binary system. They also share a consistent radial velocity with previously known members of the association. A fourth candidate T Tauri star is of earlier spectral type, has a weaker Lithium absorption feature, and a different radial velocity, and is probably located in the background of the association. Our findings support the idea that the isolated T Tauri stars in that region belong to a physical association around TW Hydrae.

Abstract Copyright:

Journal keyword(s): stars: flare - stars: pre-main sequence - X-rays: stars

Nomenclature: Table 2: [SAC99] RX J1121.3-3447W (Nos N, S).

Simbad objects: 16

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Number of rows : 16
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 Cl Melotte 22 OpC 03 46 24 +24 06.8           ~ 3183 0
2 IC 2602 OpC 10 42 27 -64 25.6           ~ 610 0
3 V* TW Hya TT* 11 01 51.9053285064 -34 42 17.033218380   11.94 10.50 10.626 9.18 K6Ve 1735 1
4 CD-29 8887 TT* 11 09 13.7928873024 -30 01 39.968872752   12.95 11.119 10.642 8.875 M2Ve 118 0
5 CD-38 6968 PM* 11 09 40.0907929752 -39 06 47.281570596   10.52 9.93     G3 10 0
6 TWA 3 ** 11 10 27.894072 -37 31 51.96612   13.53 12.05 11.61 9.29 M4Ve+M4Ve 207 0
7 TWA 3A TT* 11 10 27.9121410480 -37 31 51.535547940   14.04 12.57   9.10 M4Ve 198 0
8 V* V1217 Cen BY* 11 21 05.4814169256 -38 45 16.522915140   14.04 12.58 12.34 10.515 M1Ve 72 0
9 CD-34 7390A TT* 11 21 17.2193334624 -34 46 45.503251608   12.88 11.46 11.43 9.57 M1Ve 92 0
10 CD-34 7390 ** 11 21 17.24 -34 46 45.5     11.080   9.038 M1Ve+M1Ve 56 0
11 CD-34 7390B TT* 11 21 17.4430606440 -34 46 49.775810700   13.43 11.96 11.31 9.88 M1Ve 64 0
12 HD 98800 TT* 11 22 05.28975 -24 46 39.7571   10.20 9.28 9.26 7.386 K5V(e) 351 0
13 CD-33 7795 TT* 11 31 55.2608963280 -34 36 27.203892120   12.97 11.524 11.150 9.150 M2Ve 186 0
14 CD-36 7429A TT* 11 48 24.2227406904 -37 28 49.114270524   12.54 11.17 10.92 9.552 K5V 117 0
15 CD-36 7429 ** 11 48 24.22320 -37 28 49.1537           ~ 95 0
16 HD 109573 PM* 12 36 01.0317461592 -39 52 10.220465388   5.786 5.774 7.25 5.81 A0V 589 1

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2022.05.22-22:38:06

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