2006A&A...450.1135B


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.24CEST17:37:31

2006A&A...450.1135B - Astronomy and Astrophysics, volume 450, 1135-1148 (2006/5-2)

Rotational periods of T Tauri stars in Taurus-Auriga, south of Taurus-Auriga, and in MBM12.

BROEG C., JOERGENS V., FERNANDEZ M., HUSAR D., HEARTY T., AMMLER M. and NEUHAEUSER R.

Abstract (from CDS):

The ROSAT All-Sky Survey detected many young objects outside any known star forming region. Their formation is yet unclear. In order to improve the knowledge about these X-ray bright objects we aimed at measuring their rotational properties, which are fundamental stellar parameters, and at comparing them to young objects inside molecular clouds. We monitored photometric variations of 5 T Tauri stars in MBM12 and of 26 young objects in the Taurus-Auriga molecular cloud and south of it. Among the 26 young objects there are 17 weak-line T Tauri stars, 7 zero age main-sequence stars and 2 of unknown type. In addition, 2 main-sequence K-type stars were observed, and one comparison star turned out to be an eclipsing binary. We found periodic variations for most of the targets. The measured periods of the T Tauri stars range from 0.57 to 7.4-days. The photometric variation can be ascribed to rotational modulation caused by spots. For a few of the periodic variables, changes of the light curve profile within several weeks are reported. For one star such changes have been observed in data taken two years apart. The exceptions are two eclipsing systems. One so far unknown system - GSC2.2N3022313162 - shows a light curve with full phase coverage having both primary and secondary minima well resolved. It has an orbital period of 0.59075-days. From our spectroscopic observations we conclude that it is a main sequence star of spectral type F2±4. We further compared the off-cloud weak-line T Tauri stars to the weak-line T Tauri stars inside the molecular cloud in terms of rotational period distribution. Statistical analysis of the two samples shows that both groups are likely to have the same period distribution.

Abstract Copyright:

Journal keyword(s): stars: rotation - stars: fundamental parameters - stars: starspots - stars: variables: general - stars: pre-main sequence - stars: binaries: eclipsing

Simbad objects: 70

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Number of rows : 70

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 V* BS Ari TT* 02 55 25.8088286216 +20 04 51.398515764   13.50 12.20     K5.5 21 0
2 V* BU Ari Or* 02 56 07.9958235242 +20 03 24.205215669   15.14 14.15 14.50   M1:IIIe 53 1
3 V* BV Ari Or* 02 56 08.424288 +20 03 38.57004   16.93 15.42 14.37   M3Ve 38 0
4 V* WY Ari Or* 02 56 37.5656525980 +20 05 37.246494671   13.29 12.46     K5/6e 83 0
5 MBM 12 MoC 02 56 50 +19 32.0           ~ 211 1
6 V* BX Ari Or* 02 58 11.231808 +20 30 03.14712   13.01 11.84 11.99   K2.0 32 0
7 2MASS J03125022-0414049 Y*O 03 12 50.2265 -04 14 04.919   10.86 10.19 10.14 9.70 G0 8 0
8 2MASS J03125074-0414152 Y*O 03 12 50.7491339804 -04 14 15.259321946     10.5 10.97 10.39 G8 7 0
9 V* V1264 Tau TT* 03 24 25.2469539768 +02 31 00.946453941     12.39     K4 12 0
10 V* V1267 Tau TT* 03 33 11.6208805364 +10 35 56.070050279     12.23     K3 16 0
11 V* V1273 Tau Ir* 03 44 53.1684549331 +03 59 30.950706903   12.77 12.60     K2 17 0
12 V* V1285 Tau Ir* 03 51 26.2664325696 +09 53 37.278766760   12.6       ~ 5 0
13 V* V679 Tau TT* 03 52 02.2217462456 +24 39 47.690003665   13.57 11.41 11.89 10.77 K5e 114 0
14 HD 285372 TT* 04 03 24.9512643312 +17 24 26.049241916   13.17 11.60 11.22   K3V: 34 0
15 V* V1195 Tau TT* 04 06 51.350976 +25 41 28.26924   13.27 11.88 11.37 10.021 K6.5 27 0
16 TYC 73-762-1 * 04 07 16.3473 +01 13 14.683   13.02 11.79     ~ 4 0
17 GSC 00073-00762 * 04 07 16.352 +01 13 14.68   12.46 11.62 11.81   ~ 5 0
18 V* V1302 Tau RS* 04 07 54.0012439342 +17 50 25.833811437   11.9 11.554 10.8 10.387 K4 22 0
19 V* V1196 Tau TT* 04 08 12.9972022551 +19 56 39.262414205           K2 24 0
20 V* V1304 Tau TT* 04 09 17.0024419993 +17 16 08.259253957   14.58 13.20     M1 22 0
21 V* V1305 Tau bL* 04 09 17.1727159234 +17 15 47.378737805     13.2     ~ 3 0
22 V* V1098 Tau Or* 04 14 47.9897419517 +27 52 34.232647358   14.08 11.73 10.95   M1 106 0
23 EM* LkCa 4 Or* 04 16 28.1070192558 +28 07 35.732032828   13.96   11.825   K7:Ve 144 0
24 V* V410 Tau Or* 04 18 31.1083261392 +28 27 16.155411536   12.13 10.75 8.45 9.408 K3Ve 426 0
25 V* V1069 Tau Or* 04 18 51.7034617249 +17 23 16.579842927   13.32 12.22 12.22 10.944 K7e 102 0
26 WK81 1 TT* 04 19 26.2671630797 +28 26 14.259129093   14.81   12.240   K7 193 1
27 V* V1070 Tau Or* 04 19 41.2688488305 +27 49 48.151086734   13.75 12.25 11.14   M0 134 0
28 HD 283572 Or* 04 21 58.8482823933 +28 18 06.511915195   9.80 9.03 9.14   G5IVe 269 0
29 GSC 00075-00041 SB* 04 22 54.6196274952 +01 41 31.848300869     12.27     F8 9 0
30 V* IP Tau Or* 04 24 57.0823478325 +27 11 56.543062579   14.50   12.46   M0:Ve 192 0
31 HD 285778 Or* 04 27 10.5694001840 +17 50 42.660851333   11.07 10.22     K1e 124 0
32 V* DI Tau Or* 04 29 42.4736177473 +26 32 49.119618729 16.39 15.20 13.60     M0Ve 195 0
33 NAME Tau-Aur Complex SFR 04 30 +25.0           ~ 1227 0
34 V* UX Tau A TT* 04 30 03.9931880444 +18 13 49.476948664   12.92 11.15     K2Ve 328 0
35 V* UX Tau Or* 04 30 03.99626 +18 13 49.4355 11.23 11.84 10.80 9.83 9.05 K2Ve+M1Ve 316 0
36 HBC 392 Or* 04 31 27.1756563044 +17 06 24.745482804   13.71       K5e 70 0
37 L 1551-51 Or* 04 32 09.2838548075 +17 57 22.695083303   13.29       K7e 118 0
38 V* V827 Tau TT* 04 32 14.5731257511 +18 20 14.719337994   14.00 12.63 12.35   K7Ve 158 0
39 V* V826 Tau TT* 04 32 15.8394065935 +18 01 38.751126168   13.51 12.074   10.312 K7.0 165 0
40 V* V1076 Tau Or* 04 32 43.7360056323 +18 02 56.310753348   14.72       K7 84 0
41 V* V830 Tau TT* 04 33 10.0299730541 +24 33 43.255853678   13.91 12.08 11.30   M0-1 173 1
42 V* V1077 Tau Or* 04 34 18.0134345949 +18 30 06.335688396   13.70       G8 74 0
43 2MASS J04341953+0226260 pr* 04 34 19.5435970686 +02 26 26.202458038     12.32     K4e 17 0
44 HD 285898 Or* 04 35 14.1984242134 +18 21 35.579726828   11.69 11.39     G0 29 0
45 V* HP Tau Or* 04 35 52.7821592361 +22 54 23.158368128 17.39 14.9 14.90     K2-5e 190 0
46 CoKu HP Tau G2 Or* 04 35 54.1553246504 +22 54 13.404170652 13.63 12.31 11.158 10.14 9.172 G2e 113 0
47 V* V1115 Tau TT* 04 36 19.1014976181 +25 42 58.999936422   12.97 11.76 10.81 10.228 M0 76 0
48 V* VY Tau Or* 04 39 17.4208176970 +22 47 53.361809753     9.00     M0Ve 180 0
49 V* V583 Aur TT* 04 39 25.4481619378 +33 32 44.670274932   12.79 11.24 10.45   K5 21 0
50 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 3544 0
51 V* IW Tau Or* 04 41 04.7179844751 +24 51 06.034940625   14.25 12.595 11.65 10.504 K7Ve 106 0
52 V* V1825 Ori BY* 04 44 45.3726166453 +08 13 46.932498921     11.75     K4 11 0
53 V* V1826 Ori BY* 04 45 33.6195707324 +12 09 18.201881715   14.10 13.23 13.24   ~ 2 0
54 V* V1827 Ori Ir* 04 45 36.5393161535 +12 07 50.905487474           K7 7 0
55 V* V1337 Tau RS* 04 48 00.44 +27 56 19.6     12.39     G2 18 0
56 V* V1338 Tau LP* 04 48 17.6143643544 +27 55 18.086341277   11.3   11.60   ~ 2 0
57 V* V1831 Ori TT* 04 50 04.6941520823 +01 50 42.608423940   12.46 11.97     G9 9 0
58 RX J0452.8+1621 RS* 04 52 50.160216 +16 22 09.16608   13.07 11.78 11.37   K4 23 0
59 HD 282630 Or* 04 55 36.9698052301 +30 17 55.100440086   12.17 11.12 10.55   K0Ve 151 0
60 V* V1350 Tau RS* 04 55 47.6668613935 +17 42 02.125752197   12.02 11.36 10.98   K3 17 0
61 V* V397 Aur Or* 04 56 02.0261376554 +30 21 03.635056925   13.07 11.72 11.25   K7e 151 0
62 HD 282600 TT* 04 57 06.5178070912 +31 42 50.591021890   12.16 10.88 10.05   K0 24 0
63 V* V836 Tau TT* 05 03 06.5988350466 +25 23 19.604482133   15.00 13.49 13.48   K7/M0Ve 206 0
64 V* V1872 Ori Or* 05 28 58.5317178937 +10 45 37.629395445     13.14 12.49 11.86 K3 13 0
65 V* V1874 Ori Or* 05 29 18.9948600277 +12 09 29.361333529     12.86     K7/M0e 14 0
66 V* V1878 Ori Or* 05 30 42.6347868035 -04 35 01.899769035   12.60 11.521   10.221 K3e 26 0
67 M 42 HII 05 35 17.3 -05 23 28           ~ 3751 0
68 NAME Ori A MoC 05 38 -07.1           ~ 2697 0
69 NAME Chamaeleon Region SFR 11 55 -78.0           ~ 694 0
70 NAME Lup Cloud SFR 16 03 -38.1           ~ 531 0

    Equat.    Gal    SGal    Ecl

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2020.10.24-17:37:31

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