2000A&A...359..181W

Query : 2000A&A...359..181W

2000A&A...359..181W - Astronomy and Astrophysics, volume 359, 181-190 (2000/7-1)

A study of Li-rich stars discovered by ROSAT in Taurus-Auriga.

WICHMANN R., TORRES G., MELO C.H.F., FRINK S., ALLAIN S., BOUVIER J., KRAUTTER J., COVINO E. and NEUHAEUSER R.

Abstract (from CDS):

In recent years, large numbers of lithium-rich stars were discovered near several nearby star forming regions (SFRs). We present a detailed study of those stars discovered in and near the central region of the Taurus-Auriga T Tauri association, based on high-resolution echelle spectroscopy and proper motion data. We find that about 60 per cent of our sample can be regarded as pre-main sequence (PMS) stars, while the remaining stars likely are foreground zero-age main sequence (ZAMS) stars. We conclude that the PMS stars are likely associated with the Taurus-Auriga SFR, while the ZAMS stars may represent a population of somewhat older Gould Belt stars. The fraction of ZAMS stars in the Taurus-Auriga sample studied in this work is larger than in a similar sample in the Lupus SFR, and we argue that this may be explained by the spatial structure of the Gould Belt and the Sun's location within it.

Abstract Copyright: ∼

Journal keyword(s): stars: kinematics - stars: pre-main sequence - stars: rotation - X-rays: stars - Galaxy: open clusters and associations: individual: Gould Belt

Nomenclature: Table 1: [WKS96] RX JHHMM.m+DDMMA N=2 added.

Simbad objects: 72

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Number of rows : 72
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 BD+47 815 * 03 23 40.3160968080 +47 57 29.667191652   10.53 9.94     F3V 26 0
2 Cl Melotte 20 OpC 03 26 28.1 +48 58 30           ~ 861 0
3 Cl Melotte 22 OpC 03 46 24.2 +24 06 50           ~ 3436 0
4 HD 285281 TT* 04 00 31.0706486828 +19 35 20.913765172   11.34 10.167 9.74 9.011 K1 40 0
5 HD 285372 TT* 04 03 24.9515332104 +17 24 26.050752144   13.17 11.60 11.22   K3V: 39 0
6 HD 283323 TT* 04 05 12.3477785160 +26 32 43.833558408   12.26 11.64     K2 28 0
7 V* V1298 Tau TT* 04 05 19.5909996648 +20 09 25.563233736   11.11 10.12 9.57   K1 131 0
8 V* V1299 Tau Ir* 04 05 40.5850046784 +22 48 11.800275120   9.99 9.39     G3V: 52 0
9 HD 284149 TT* 04 06 38.7981157344 +20 18 11.151888084   10.21 9.63     F8 53 0
10 V* V1195 Tau TT* 04 06 51.350976 +25 41 28.26924   13.27 11.88 11.37 10.021 K6.5 30 0
11 V* V1302 Tau RS* 04 07 54.0012439583 +17 50 25.833810665   11.9 11.554 10.8 10.387 K4 25 0
12 HD 281691 TT* 04 09 09.7467974736 +29 01 30.302914008   11.48 10.68 10.24   G8III 49 0
13 V* V1304 Tau TT* 04 09 16.9997169624 +17 16 08.226733044   14.58 13.20     M1 26 0
14 V* V1306 Tau TT* 04 09 51.1327776576 +24 46 21.070702524   14.72 13.30     M1 32 0
15 V* V1307 Tau TT* 04 12 50.629008 +19 36 57.76200   13.87 12.58 12.59   K6 28 0
16 HD 285579 TT* 04 12 59.8845953784 +16 11 48.196387968   11.92 11.12     G0 22 0
17 HD 284266 TT* 04 15 22.9214409240 +20 44 16.917956484   11.20 10.51 10.12   K0V: 44 0
18 V* V952 Per TT* 04 15 51.3743941320 +31 00 35.849672892   13.25 12.36     G6 18 0
19 2MASS J04192710+2808157 TT* 04 19 27.1184296080 +28 08 15.729197244           G9 10 0
20 V* V652 Per TT* 04 20 24.1154560224 +31 23 23.688448692   13.54       K4 23 0
21 2MASS J04204982+3009155 TT* 04 20 49.8181075848 +30 09 15.263958276     14.74     K7 15 0
22 HD 285751 TT* 04 23 41.3220021720 +15 37 54.899671728   12.42 11.56     K2V: 44 0
23 V* V1201 Tau TT* 04 24 48.1541789688 +26 43 16.062986712   13.53 11.26 10.88   K1 43 0
24 HD 283641 TT* 04 24 49.0452856368 +26 43 10.395844176   12.41 11.42     K0 39 0
25 HD 28150 Y*O 04 27 04.8651639600 +18 12 27.177718608   6.95 6.92     A0 37 0
26 AG+18 339 Y*O 04 27 05.9787842904 +18 12 37.200405492   9.09 8.73     G5 36 0
27 Cl Melotte 25 OpC 04 29 47.3 +16 56 53           ~ 3078 0
28 NAME Tau-Aur Complex SFR 04 30 +25.0           ~ 1357 0
29 V* V1319 Tau TT* 04 30 49.1855896920 +21 14 10.654195380   11.07 10.24 9.82 9.465 G8 36 0
30 HD 285840 TT* 04 32 42.4331784912 +18 55 10.200928476   11.52 10.848   9.711 K1V: 44 0
31 V* V1321 Tau TT* 04 32 53.2357475304 +17 35 33.645243444     13.69     M2 57 0
32 V* V1324 Tau TT* 04 35 56.8366741632 +23 52 05.041814880   15.01 13.57     M1 32 0
33 V* V961 Per TT* 04 37 16.8636732048 +31 08 19.566606084   14.54 13.24     K4 21 0
34 RX J0437.4+1851 ** 04 37 26.84 +18 51 25.8           ~ 9 0
35 RX J0437.4+1851B TT* 04 37 26.8466657448 +18 51 22.352070420       12.84   ~ 8 0
36 RX J0437.4+1851A TT* 04 37 26.8711516200 +18 51 26.718203844       11.58 9.915 K6 17 0
37 V* V1325 Tau TT* 04 38 13.0523414917 +20 22 46.839665447   13.33 12.22 11.81   K2 29 0
38 V* V1117 Tau Y*O 04 38 15.6143744976 +23 02 27.544142652   15.26 13.76 13.41   M1 34 0
39 V* V1326 Tau TT* 04 38 27.6521402736 +15 43 37.960988448   14.47 13.29     K3 18 0
40 HD 285957 TT* 04 38 39.0722950320 +15 46 13.573577352   11.75 10.863   9.616 K2 52 0
41 V* V583 Aur TT* 04 39 25.4483595840 +33 32 44.672191800   12.79 11.24 10.45   K5 23 0
42 V* V1328 Tau TT* 04 41 23.9948358936 +27 15 12.468646008   14.05 13.11     G8 19 0
43 HD 283798 TT* 04 41 55.1542944840 +26 58 49.419533856   10.21 9.55     G2 52 0
44 V* V1331 Tau TT* 04 43 25.9667713008 +15 46 03.787638528   13.88 12.84     G7 12 0
45 V* V1205 Tau TT* 04 44 23.5482972360 +20 17 17.477873160   13.70 12.67     K1 19 0
46 V* V1333 Tau TT* 04 44 26.8992878928 +19 52 16.248831024   13.94 12.55     ~ 18 0
47 HD 283782 TT* 04 44 54.4590108624 +27 17 45.223813068   10.69 9.80 9.47   K0 37 0
48 HD 30171 TT* 04 45 51.2948260920 +15 55 49.632455460   10.12 9.36   8.439 G5 53 0
49 V* V1335 Tau TT* 04 46 53.2715281680 +22 55 12.932890680     12.94     ~ 21 0
50 V* V1337 Tau RS* 04 48 00.44 +27 56 19.6     12.39     G2 18 0
51 V* V1341 Tau TT* 04 50 00.1930583400 +22 29 57.504414912   12.19 11.285   10.172 K1 30 0
52 V* V1343 Tau TT* 04 51 54.2542654080 +17 58 27.776552232     14.26     M2 19 0
53 V* V1344 Tau TT* 04 51 56.5107622296 +28 49 25.932211536     14.52     K2 13 0
54 V* V1346 Tau TT* 04 52 30.7533146448 +17 30 25.724127708     12.02     K4 30 0
55 RX J0452.8+1621 RS* 04 52 50.1733660566 +16 22 09.075181407   13.074 11.778 11.367   K4 25 0
56 V* V1348 Tau TT* 04 52 57.0729898536 +19 19 50.284227000     12.15     K5 23 0
57 HD 31281 TT* 04 55 09.6199331136 +18 26 31.105838832   9.83 9.14 9.12   G1V: 39 0
58 V* V1350 Tau RS* 04 55 47.6668391376 +17 42 02.124552384   12.02 11.36 10.98   K3 22 0
59 V* V1353 Tau TT* 04 56 56.5439978040 +16 00 24.839219268     14.42     M1.5 18 0
60 HD 286179 TT* 04 57 00.6443930448 +15 17 53.000447676   10.99 10.39     G3V: 40 0
61 HD 282600 LP* 04 57 06.5174531640 +31 42 50.590964592   12.16 10.88 10.05   K0 26 0
62 HD 286178 TT* 04 57 17.6843322925 +15 25 09.337576443   11.150 10.229 10.035   K1 35 1
63 V* V1354 Tau TT* 04 57 30.6551084688 +20 14 29.585897268   11.94 11.09 10.85 9.938 K1 33 0
64 V* V1207 Tau TT* 04 58 39.7400575008 +20 46 44.000970276   13.15       K7 33 0
65 V* V1840 Ori TT* 04 59 46.1728084584 +14 30 55.465014960     11.652   10.194 K4 30 0
66 NGC 2632 OpC 08 40 13.0 +19 37 16           ~ 1566 0
67 IC 2391 OpC 08 41 10.1 -52 59 28           ~ 822 0
68 IC 2602 OpC 10 42 27.1 -64 25 34           ~ 675 0
69 NAME Chamaeleon Region SFR 11 55 -78.0           ~ 807 0
70 NAME Lupus Complex SFR 16 03 -38.1           ~ 720 0
71 IC 4665 OpC 17 46 13.0 +05 36 54           ~ 372 0
72 NAME Gould Belt PoG ~ ~           ~ 874 1

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