2003MNRAS.342..837R


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.21CEST15:50:00

2003MNRAS.342..837R - Mon. Not. R. Astron. Soc., 342, 837-850 (2003/July-1)

Activity and kinematics of members of the TW Hydrae association.

REID N.

Abstract (from CDS):

We present high-resolution echelle spectroscopy of 20 stars in 16 systems catalogued as members of the TW Hydrae association, and 16 stars identified as possible new members. We have calibrated the range of coronal and chromospheric activity expected for such young stars as a function of spectral type by combining our observations with literature data for field and open cluster stars. We also compute space motions for TWA members and candidate members with proper motion measurements, using two techniques to estimate distances to stars lacking direct trigonometric parallax measurements. The mean space motion of the four TWA members with known parallaxes is (U, V, W : -10.0, -17.8, -4.6) km/s. 14 of the candidates have properties inconsistent with cluster membership; the remaining two are potential new members, although further observations are required to confirm this possibility.

Abstract Copyright: 2003 RAS

Journal keyword(s): stars: activity - open clusters and associations: individual: TW Hydrae - solar neighbourhood

Nomenclature: Table 1: TWA NN (No. 20) added.

CDS comments: Table 1: XACT NNN = TYC FFFF NNNNN N in SIMBAD, R 4-42AB not identified

Simbad objects: 54

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Number of rows : 54

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 CD-39 5833 * 09 47 19.8551930281 -40 03 09.843391210   11.57 10.89     K0V 17 0
2 V* BX Ant TT* 10 18 28.6989165716 -31 50 02.826261802   13.39 11.454 11.382 9.325 M0Ve 103 0
3 TYC 5497-897-1 * 10 31 23.8077416585 -14 33 48.918433676   11.46 10.75     ~ 1 0
4 HD 296790 Ro* 10 32 43.9096938476 -44 40 55.666281721   10.50 9.649   8.747 K0V 10 0
5 V* CE Ant TT* 10 42 30.1021269333 -33 40 16.226774953   12.21 10.91   9.10 M2Ve 152 1
6 V* TW Hya TT* 11 01 51.9054298616 -34 42 17.031550898   11.94 10.50 10.626 9.18 K6Ve 1553 1
7 NAME TW Hya Association As* 11 01.9 -34 42           ~ 826 0
8 CD-29 8887 TT* 11 09 13.8074415397 -30 01 40.070212113   12.95 11.119 10.642 8.875 M2Ve 111 0
9 TWA 3B TT* 11 10 27.8410112470 -37 31 52.748874445   14.59 13.70   8.86 M4Ve 49 0
10 TWA 3 ** 11 10 27.894072 -37 31 51.96612   13.53 12.05 11.61 9.29 M4Ve+M4Ve 200 0
11 TWA 3A TT* 11 10 27.9117558304 -37 31 51.529219753   14.04 12.57   9.10 M4Ve 187 0
12 V* V1215 Cen TT* 11 13 26.2208332352 -45 23 42.719174706     12.478   10.483 K8IVe 68 0
13 V* V1217 Cen BY* 11 21 05.4812165874 -38 45 16.521880972   14.04 12.58 12.34 10.515 M1Ve 64 0
14 CD-34 7390A TT* 11 21 17.2193442623 -34 46 45.500772910   12.88 11.46 11.43 9.57 M1Ve 83 0
15 CD-34 7390 ** 11 21 17.24 -34 46 45.5     11.080   9.038 M1Ve+M1Ve 56 0
16 CD-34 7390B TT* 11 21 17.4429759333 -34 46 49.774537089   13.43 11.96 11.31 9.88 M1Ve 57 0
17 HD 98800B SB* 11 22 05.288454 -24 46 39.04974   11.18 9.92     ~ 111 1
18 HD 98800 RS* 11 22 05.28975 -24 46 39.7571   10.20 9.28 9.26 7.386 K5V(e) 333 0
19 CD-39 7118B * 11 27 28.8039324736 -39 52 57.441488402   11.2 10.6     K3IV(e) 2 0
20 CD-33 7795B LM* 11 31 55.2500 -34 36 25.200     20.40   15.8 M8.5/9e 118 0
21 CD-33 7795 TT* 11 31 55.2603055856 -34 36 27.214242128   12.97 11.524 11.150 9.150 M2Ve 176 0
22 CD-26 8623B TT* 11 32 41.1729967174 -26 52 09.110626414   16.70 15.22 13.68 11.76 M5.5 66 0
23 CD-26 8623 TT* 11 32 41.2659398509 -26 51 55.961617611   13.69 12.23 11.14 9.637 M3Ve 87 0
24 CD-48 6632 * 11 35 03.7637171700 -48 50 21.971788805   10.95 10.27     G7V 9 0
25 TWA 26 LM* 11 39 51.1435262748 -31 59 21.473337261         15.83 M8e 97 0
26 TWA 19B Em* 11 47 20.5878427409 -49 53 04.418207096   13.82 12.30   10.21 K7e 25 0
27 HD 102458 Y*O 11 47 24.5436617458 -49 53 03.018055867   9.70 9.07   8.40 G4V 79 0
28 Ross 128 Er* 11 47 44.3968668170 +00 48 16.404931305 14.223 12.905 11.153 9.859 8.184 dM4 340 0
29 CD-36 7429B TT* 11 48 23.7347470027 -37 28 48.519698919   15.43 14.00   11.45 M1V 66 0
30 CD-36 7429A TT* 11 48 24.2226856081 -37 28 49.112368947   12.54 11.17 10.92 9.552 K5V 107 0
31 CD-36 7429 ** 11 48 24.22320 -37 28 49.1537           ~ 92 0
32 TWA 27 LM* 12 07 33.4676156527 -39 32 54.016042897     19.95 17.99 15.88 M8IVe 311 0
33 CD-48 7200 * 12 10 12.8824295933 -48 55 26.503213713   12.27 10.57 10.29   G 1 0
34 CD-40 7164 * 12 13 06.9632834551 -40 56 31.594896679   10.35 9.80     G 10 0
35 HD 107434 PM* 12 21 09.5691628847 -38 18 09.801843801   8.63 8.12     F6V 27 0
36 CD-49 7027 pr* 12 21 55.6591197161 -49 46 12.440182190   10.81 10.001   9.050 G9V 23 0
37 CD-47 7559 pr* 12 22 04.2987714381 -48 41 24.952253689   11.34 10.618   9.562 K1Ve 18 0
38 TWA 20 Ro* 12 31 38.0691558062 -45 58 59.456934871   14.10 13.240   10.682 M3IVe 43 0
39 V* V1250 Cen TT* 12 34 20.4718890806 -48 15 19.545698484   13.3 12.2   11.80 M3 34 0
40 V* V1251 Cen TT* 12 34 20.6481566533 -48 15 13.530604360   13.3 12.2   11.90 M3.5 39 0
41 TWA 16 ** 12 34 56.302608 -45 38 07.63332   14.05 12.58 12.21 10.310 M2.5 52 0
42 V* V1252 Cen TT* 12 35 04.2562814903 -41 36 38.620524379   14.39 13.045   10.506 M2Ve 69 0
43 HD 109573B PM* 12 36 00.5493890939 -39 52 15.696207303         10.78 M2.5 74 0
44 HD 109573 PM* 12 36 01.0317721349 -39 52 10.222698506   5.786 5.774 7.25 5.81 A0V 559 1
45 CD-39 7793 Ro* 12 43 51.8040 -39 46 15.959   10.82 9.980   8.996 K0V 5 0
46 HD 110817 pr* 12 45 06.7589434496 -47 42 58.198997826   11.16 10.388   9.411 K1Ve 22 0
47 HD 111265 PM* 12 48 20.0604744895 -42 37 33.827552482   10.72 10.13     G0V 4 0
48 HD 112227 * 12 55 24.4912704562 -36 27 20.605492789   9.977 9.718     A8/9V 8 0
49 HD 114335 PM* 13 10 19.4675959150 -32 48 19.598290612   9.13 8.60     F6V 21 0
50 Ross 1007 PM* 13 19 40.1257231213 +33 20 47.508531100   12.16   10.179   M2V 99 0
51 V* V1267 Cen TT* 13 20 45.3877589173 -46 11 37.712461035   14.0 12.7   10.78 K5IVe 37 0
52 V* V1268 Cen TT* 13 21 37.2196798397 -44 21 51.945677621     12.952   10.965 M0.5 39 0
53 HD 119850 Er* 13 45 43.7754528655 +14 53 29.473195472 10.989 9.894 8.50 7.465 6.363 M2V 290 0
54 HD 151288 PM* 16 45 06.3505783075 +33 30 33.213883636   9.48   8.388   K7.5Ve 169 0

    Equat.    Gal    SGal    Ecl

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2020.10.21-15:50:00

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