2010AJ....139..504B


C.D.S. - SIMBAD4 rel 1.7 - 2021.04.18CEST11:45:57

2010AJ....139..504B - Astron. J., 139, 504-518 (2010/February-0)

Rotation and magnetic activity in a sample of M-dwarfs.

BROWNING M.K., BASRI G., MARCY G.W., WEST A.A. and ZHANG J.

Abstract (from CDS):

We have analyzed the rotational broadening and chromospheric activity in a sample of 123 M-dwarfs, using spectra taken at the W.M. Keck Observatory as part of the California Planet Search program. We find that only seven of these stars are rotating more rapidly than our detection threshold of v sin i ~ 2.5 km/s. Rotation appears to be more common in stars later than M3 than in the M0-M2.5 mass range: we estimate that less than 10% of early-M stars are detectably rotating, whereas roughly a third of those later than M4 show signs of rotation. These findings lend support to the view that rotational braking becomes less effective in fully convective stars. By measuring the equivalent widths of the Ca II H and K lines for the stars in our sample, and converting these to approximate LCa/Lbol measurements, we also provide constraints on the connection between rotation and magnetic activity. Measurable rotation is a sufficient, but not necessary condition for activity in our sample: all the detectable rotators show strong Ca II emission, but so too do a small number of non-rotating stars, which we presume may lie at high inclination angles relative to our line of sight. Our data are consistent with a "saturation-type" rotation-activity relationship, with activity roughly independent of rotation above a threshold velocity of less than 6 km/s. We also find weak evidence for a "gap" in LCa/L bol between a highly active population of stars, which typically are detected as rotators, and another much less active group.

Abstract Copyright:

Journal keyword(s): stars: activity - stars: low-mass, brown dwarfs - stars: rotation

Simbad objects: 126

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Number of rows : 126

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 BD+44 4548 PM* 00 05 10.8891772602 +45 47 11.639549811   11.45   9.2   M2Ve 143 0
2 HD 225213 Er* 00 05 24.4278018131 -37 21 26.504223709 11.074 10.022 8.562 7.589 6.432 M2V 189 0
3 V* GX And Er* 00 18 22.8849667932 +44 01 22.637271919   10.120   7.3   M2V 469 0
4 EGM 95 PM* 00 21 56.0447626099 -31 24 21.812262092 13.82 12.635 11.130 10.121 8.919 M1.5 46 0
5 Wolf 1056 PM* 00 38 59.0436387491 +30 36 58.387293197   12.60   10.6   M2.5V 81 0
6 CD-44 170 PM* 00 39 58.8243310853 -44 15 11.582410229 14.079 12.888 11.401 10.433 9.371 M4V 68 0
7 Ross 318 Er* 01 02 32.2350866427 +71 40 47.334297514   11.736   9.1   M3.0Ve 136 0
8 V* YZ Cet Er* 01 12 30.6367741360 -16 59 56.361313690 15.315 13.885 12.074 10.696 8.938 M4.0Ve 212 0
9 G 3-14 PM* 01 43 20.1788090313 +04 19 17.962195740 13.64 12.45 10.915 9.879 8.614 M2V 127 0
10 V* TZ Ari Er* 02 00 12.9561933930 +13 03 07.021294655 15.406 14.100 12.298 10.943 9.195 M4.5V 248 0
11 G 244-47 PM* 02 01 35.3406953145 +63 46 11.995703079       10.630   M2.5Ve 55 0
12 BD+02 348 PM* 02 12 20.9874569826 +03 34 32.230562527 12.552 11.477 10.042 9.092 7.988 M1V 161 0
13 BD+47 612 PM* 02 22 14.6440695182 +47 52 48.110234827   10.85   9.104   M0V 118 0
14 V* BX Cet BY* 02 36 15.2666844128 +06 52 17.924295081   13.28   11.405   M3.5V 163 1
15 V* VX Ari Er* 02 44 15.5094178798 +25 31 24.117029188 13.363 12.141 10.563 9.49 8.115 dM3 191 0
16 BD-11 916 PM* 04 37 41.8658538225 -11 02 19.970320151 13.041 11.838 10.331 9.327 8.137 M1V 110 0
17 Wolf 1539 PM* 04 52 05.7323109095 +06 28 35.589503596 14.791 13.568 12.018 10.854 9.334 M2V 132 1
18 L 736-30 PM* 04 53 49.9799241551 -17 46 24.309239662 13.598 12.443 10.894 9.876 8.671 M3V 86 0
19 LP 776-46 PM* 05 03 20.0842221741 -17 22 24.722641994 14.612 13.371 11.735 10.603 9.192 M3V 79 0
20 HD 33793 Ro* 05 11 40.5893175460 -45 01 06.353955874 11.624 10.433 8.853 7.9 6.899 M1VIp 293 0
21 G 85-52 PM* 05 12 42.2265962548 +19 39 56.356342775 13.493 12.308 10.746 9.728 8.529 M0V 79 0
22 HD 36395 PM* 05 31 27.3958475290 -03 40 38.021551815 10.626 9.443 7.968 6.996 5.913 M1.5Ve 444 0
23 Ross 46 PM* 05 34 52.1154427007 +13 52 46.712210201   13.46   11.465   M3V 52 0
24 HD 233153 PM* 05 41 30.7305969608 +53 29 23.290085020   11.31   9.343   M1.0V 162 0
25 Ross 47 BY* 05 42 09.2672965388 +12 29 21.611736198 14.264 13.130 11.509 10.298 8.709 M4V 232 0
26 G 192-13 PM* 06 01 11.0454819736 +59 35 49.885864880   13.31   10.7   M4.0Ve 71 0
27 LP 838-16 PM* 06 07 43.7362745053 -25 44 41.504356645 14.707 13.484 11.889 10.786 9.391 M3 30 0
28 G 222-11 PM* 06 10 19.8463571757 +82 06 24.324656398   12.214   9.5   M2.5V 100 0
29 HD 42581 Er* 06 10 34.6152510171 -21 51 52.658021185 10.801 9.607 8.125 7.164 6.121 M1V 414 0
30 HD 50281B ** 06 52 18.0414038629 -05 11 24.039080436   11.47 10.05 9.870   M2.5V 109 0
31 HD 265866 PM* 06 54 48.9577150656 +33 16 05.438570309   11.47   9.650   M3V 191 0
32 G 107-65 PM* 07 23 14.8951251540 +46 05 14.685421330       10.059   M1V 66 0
33 BD+05 1668 PM* 07 27 24.49975 +05 13 32.8332 12.558 11.443 9.872 8.699 7.161 M3.5V 353 0
34 G 112-21 PM* 07 28 45.4390299123 -03 17 53.305913300 14.298 13.023 11.456 10.351 8.954 M3V 64 0
35 G 234-5 PM* 07 34 27.4326550030 +62 56 29.361794163       9.973   M0V 66 0
36 LP 783-1 PM* 07 38 40.9603640288 -21 13 28.477943882 14.516 13.294 11.712 10.616 9.229 dM3.0 59 1
37 V* YZ CMi Er* 07 44 40.1726285952 +03 33 08.877830321 13.761 12.831 11.225 9.958 8.263 M4.0Ve 796 0
38 G 113-20 PM* 08 16 07.9814381592 +01 18 09.267240612 12.824 11.63 10.091 9.071 7.851 M2.0V 104 0
39 L 675-81 PM* 08 40 59.2055621000 -23 27 22.598649814   13.2 11.975 11.637 9.37 M3.5V 115 1
40 * rho01 Cnc B PM* 08 52 40.8627482955 +28 18 58.824842873   14.80   12.814   M4.5V 126 1
41 G 48-20 PM* 09 30 44.5850506839 +00 19 21.600078961 14.533 13.298 11.710 10.583 9.127 M3.5Ve 75 0
42 BD+36 1970 PM* 09 31 56.3328833946 +36 19 12.825841093       9.799   M1V 77 0
43 L 678-39 PM* 09 36 01.6372518187 -21 39 38.878281901 13.647 12.48 10.906 9.858 8.577 M2.5V 111 0
44 Ross 85 PM* 09 41 10.3603705950 +13 12 34.424857126 13.097 11.891 10.370 9.371 8.182 M2.5V 110 0
45 G 236-2 Er* 09 42 51.7280326717 +70 02 21.879144922       10.6   M3.5V 91 0
46 BD+63 869 PM* 09 56 08.6712218178 +62 47 18.467640629   10.68 9.18 8.89   M0.5Ve 106 0
47 V* AN Sex RS* 10 12 17.6684359061 -03 44 44.393843397 11.941 10.757 9.264 8.258 7.066 M2V 199 0
48 BD+20 2465 Er* 10 19 36.2808024653 +19 52 12.014037746   10.82 9.52 9.19   dM3 1183 0
49 BD-09 3070 PM* 10 25 10.8370935977 -10 13 43.289558706 12.834 11.631 10.139 9.161 8.051 M1V 119 0
50 BD+01 2447 PM* 10 28 55.5513010331 +00 50 27.601817738 12.389 11.151 9.650 8.617 7.389 dM2 267 0
51 Wolf 358 BY* 10 50 52.0312400722 +06 48 29.263582377 14.532 13.319 11.675 10.459 8.889 M4V 233 0
52 Wolf 359 Er* 10 56 28.826208 +07 00 52.34400 16.706 15.541 13.507 11.684 9.507 dM6 643 0
53 Ross 104 PM* 11 00 04.2569699829 +22 49 58.646653116 12.826 11.584 10.020 8.952 7.646 M4V 153 0
54 V* DS Leo BY* 11 02 38.3419263291 +21 58 01.704479733 12.246 11.049 9.572 8.638 7.634 M1.0V 185 0
55 HD 95735 Er* 11 03 20.19400 +35 58 11.5682 10.030 8.960 7.520 5.99 4.79 M2+V 644 0
56 BD+44 2051 PM* 11 05 28.57798 +43 31 36.3914 11.440 10.270   7.9   M1.0Ve 276 0
57 CD-23 9765 PM* 11 09 31.3450134735 -24 35 55.118188235 13.173 11.974 10.446 9.425 8.194 M2V 65 0
58 HD 97101B PM* 11 11 02.5375659927 +30 26 41.317154374   12.39 9.983 8.99 7.83 M2V 107 0
59 V* SZ UMa Er* 11 20 04.8280667918 +65 50 47.349805212 13.24 12.16   8.4   M2V 162 0
60 CD-31 9113 PM* 11 35 26.9474098036 -32 32 23.883014588 12.508 11.322 9.813 8.821 7.664 M2V 134 1
61 Ross 1003 PM* 11 41 44.6360191016 +42 45 07.104818145   13.36 13.795 11.524 9.18 M4.0Ve 104 1
62 Ross 905 PM* 11 42 11.0933874353 +26 42 23.658083337   12.06 10.613 10.272 8.24 M3V 520 1
63 G 254-29 PM* 11 47 41.3885038708 +78 41 28.179367946   12.741   10.0   M4.0Ve 151 0
64 Ross 128 Er* 11 47 44.3968668170 +00 48 16.404931305 14.223 12.905 11.153 9.859 8.184 dM4 353 0
65 MCC 135 LM* 11 51 07.3365548593 +35 16 19.248830169   11.30 9.802 9.420 7.64 M1.5V 151 0
66 Ross 695 PM* 12 24 52.5025942844 -18 14 32.249916666 13.954 12.863 11.272 10.243 8.991 dM2.0 103 0
67 Wolf 437 PM* 12 47 56.6249317199 +09 45 05.031923360 14.088 12.958 11.395 10.235 8.707 M3.5Ve 112 0
68 BD+13 2618 Er* 13 00 46.5602816848 +12 22 32.716799085 12.314 11.233 9.750 8.785 7.653 M0V 310 1
69 BD+11 2576 PM* 13 29 59.7856884759 +10 22 37.784822214 11.728 10.524 9.029 8.07 7.013 M1.0Ve 210 0
70 HD 119850 Er* 13 45 43.7754528655 +14 53 29.473195472 10.989 9.894 8.50 7.465 6.363 M2V 300 0
71 L 762-51 PM* 13 45 50.7149736370 -17 58 05.610222417 14.581 13.423 11.872 10.725 9.226 dM3.5 70 0
72 HD 122303 PM* 14 01 03.1881878880 -02 39 17.514921066 12.343 11.177 9.707 8.745 7.66 M0V 134 0
73 BD+16 2658 PM* 14 29 29.6973349522 +15 31 57.498714295 13.385 12.176 10.676 9.674 8.467 M2/3V 113 0
74 Wolf 1478 PM* 14 31 01.1605068161 -12 17 45.948099466 14.61 13.49 11.903 10.751 9.257 dM3.5 71 0
75 BD-11 3759 BY* 14 34 16.8115600986 -12 31 10.417356933 14.041 12.915 11.317 10.093 8.473 M3.5V 161 0
76 G 239-25 PM* 14 42 21.5759208896 +66 03 20.845074365   12.43 10.708 10.383   M3V 65 0
77 BD+16 2708 Er* 14 54 29.2359453437 +16 06 03.798840236 12.86 11.686 10.150 9.116 7.872 M3V 251 1
78 HD 131976 SB* 14 57 26.53330 -21 24 41.5778 10.759 9.559 8.065 7.075 9.02 M1.5V 228 1
79 BD-07 4003 BY* 15 19 26.8271336166 -07 43 20.190958776 13.403 11.76 10.560 9.461 8.911 M3V 552 2
80 V* EW Dra BY* 16 16 45.3148932337 +67 15 22.477858090   12.20   10.310   M3.0Ve 119 0
81 G 202-48 PM* 16 25 24.6233091302 +54 18 14.765751243   11.78 10.07 9.66   M1.5V 167 0
82 BD-12 4523 BY* 16 30 18.0582010683 -12 39 45.323235188 12.829 11.638 10.072 8.917 7.421 M3V 268 0
83 BD+25 3173 PM* 16 58 08.8497933735 +25 44 38.971120252 12.342 11.139 9.655 8.685 7.602 M2V 184 1
84 Ross 863 PM* 17 07 07.4898932675 +21 33 14.469160807 14.435 13.248 11.677 10.579 9.239 M3V 81 0
85 Wolf 654 PM* 17 11 34.7478014979 +38 26 33.914612444       11.255   M4V 60 0
86 HD 156384C PM* 17 18 58.8271844065 -34 59 48.612934284 12.96 11.79 10.22 10.05 8.82 M1.5V 173 1
87 G 181-39 PM* 17 19 52.7126409684 +41 42 49.698739005   11.423   10.4   M2V 81 0
88 BD+05 3409 PM* 17 30 22.7281969656 +05 32 54.663804222 11.981 10.79 9.433 8.348 7.382 M1.0Ve 124 0
89 BD+68 946 PM* 17 36 25.8991699744 +68 20 20.904135942 11.73 10.65   8.3   M3.0V 258 0
90 BD+18 3421 PM* 17 37 53.3467427850 +18 35 30.160739363 12.315 11.109 9.577 8.599 7.525 M1.5Ve 173 0
91 BD+43 2796 PM* 17 43 55.9631098729 +43 22 43.000698258   12.10 10.49 10.07   M2V 114 0
92 NAME Galactic Center gam 17 45 39.60213 -29 00 22.0000           ~ 12110 0
93 HD 318327 PM* 17 46 12.7508197602 -32 06 09.143256977 13.066 11.95 10.485 9.499 8.331 M1.5 54 0
94 NAME Barnard's star BY* 17 57 48.4997994034 +04 41 36.111354228 12.497 11.24 9.511 8.298 6.741 M4V 686 2
95 HD 165222 PM* 18 05 07.5787546501 -03 01 52.753216025 12.09 10.878 9.360 8.385 7.304 M0V 201 0
96 G 204-58 PM* 18 18 04.2267942319 +38 46 32.606072766   13.44 11.86 10.1   M3V 50 0
97 G 205-28 PM* 18 31 58.3750852493 +40 41 11.007002875   12.85 12.046 11.562   M3.5Ve 42 0
98 LP 229-17 LM* 18 34 36.6519183696 +40 07 26.381868262       11.104   M4V 59 0
99 Ross 145 PM* 18 41 59.0356870572 +31 49 49.761626262   12.84 13.126 10.845   M2V 71 0
100 HD 173739 PM* 18 42 46.7048533410 +59 37 49.411785651   10.782   8.1   M3V 340 1
101 HD 173740 PM* 18 42 46.8942178098 +59 37 36.723092516   11.705   8.9   M3.5V 298 1
102 Ross 154 Er* 18 49 49.3638007809 -23 50 10.453568573 13.528 12.19 10.43 10.23 7.703 M3.5Ve 333 0
103 Ross 730 PM* 19 07 05.5652386812 +20 53 16.917224360 13.54 12.397 10.774 9.745 8.543 M2.0V 137 0
104 HD 349726 PM* 19 07 13.2038777698 +20 52 37.255872400 13.553 12.383 10.771 9.739 8.531 M2V 139 0
105 G 207-19 PM* 19 08 29.9254500552 +32 16 51.610673872   13.46   11.371   M3V 45 0
106 LP 104-317 PM* 19 15 16.6952688700 +60 43 30.153578304       10.2   ~ 8 0
107 HD 180617 Ro* 19 16 55.2565250393 +05 10 08.038856129 11.768 10.63 9.115 8.076 6.782 M3-V 365 0
108 G 208-45 Er* 19 53 55.1388332012 +44 24 54.144273353   15.97 13.99 14.3 10.27 M6V 167 0
109 G 262-15 PM* 20 30 32.0455058633 +65 26 58.410103877   12.00   10.124   M3V 138 0
110 BD+44 3567 PM* 20 45 04.0991768849 +44 29 56.643391465   12.03 10.704 10.299 8.57 M2V 133 0
111 V* AU Mic LM* 20 45 09.5323695486 -31 20 27.241710746   10.05 8.627 9.078 6.593 M1VeBa1 935 0
112 HD 199305 PM* 20 53 19.7890710784 +62 09 15.813717444   10.459   7.7   M1.0Ve 192 0
113 Wolf 918 PM* 21 09 17.4274978426 -13 18 09.019135738 13.501 12.362 10.869 9.891 8.805 M1V 125 0
114 HD 209290 PM* 22 02 10.2751729794 +01 24 00.830153206 11.838 10.616 9.146 8.213 7.245 M0.5V 197 0
115 BD-05 5715 PM* 22 09 40.3443754647 -04 38 26.651267098 13.006 11.868 10.366 9.279 7.877 M3.5V 233 1
116 Ross 271 PM* 22 11 30.0939588447 +18 25 34.302018675 12.852 11.737 10.232 9.204 7.965 M2V 92 0
117 HD 239960 ** 22 27 59.47299 +57 41 45.2325           M3 263 0
118 V* EV Lac Er* 22 46 49.7311740821 +44 20 02.372223230   11.85 10.26 9.89   M4.0V 815 2
119 BD-15 6290 BY* 22 53 16.7323107416 -14 15 49.303409936 12.928 11.749 10.192 9.013 7.462 M3.5V 880 1
120 HD 216899 PM* 22 56 34.8047291749 +16 33 12.353727149 11.323 10.143 8.638 7.657 6.542 M1.5Ve 244 0
121 HD 217987 PM* 23 05 52.0354545522 -35 51 11.058757520   8.82 7.34     M2V 227 0
122 CD-26 16501 PM* 23 10 15.7442594237 -25 55 52.704272779 14.068 12.808 11.273 10.256 9.064 M2V 56 0
123 G 68-8 PM* 23 21 37.4483801312 +17 17 25.392071786 14.299 13.236 11.710 10.514 8.942 M3.5Ve 77 0
124 BD+57 2735 PM* 23 24 30.5145080333 +57 51 15.516771965   11.56   9.586   M1.5Ve 102 0
125 Ross 248 BY* 23 41 55.0361186415 +44 10 38.825189497   14.19   11.1   M5.0V 281 0
126 V* BR Psc BY* 23 49 12.5251391270 +02 24 04.403044891 11.532 10.427 8.993 8.029 6.946 dM1 291 0

    Equat.    Gal    SGal    Ecl

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2021.04.18-11:45:57

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