1995A&A...294..515H

Query : 1995A&A...294..515H

1995A&A...294..515H - Astronomy and Astrophysics, volume 294515-524 (1995/2-2)

Coronal X-ray emission and rotation of cool main-sequence stars.

HEMPELMANN A., SCHMITT J.H.M.M., SCHULTZ M., RUEDIGER G. and STEPIEN K.

Abstract (from CDS):

We analyse the coronal X-ray emission of single main sequence stars of spectral type F through M with photometrically (CaII H+K or broad-band photometry) determined rotation periods, using X-ray data from the ROSAT all-sky survey. Our sample contains both field stars in the solar neighbourhood and members of the Pleiades and Hyades open clusters. Field stars and members of the two young open clusters follow the same rotation-activity relation, i.e., we find no intrinsic dependence of coronal activity on age. Assuming a power law relationship between coronal X-ray emission and stellar rotation, we estimate a power law index close to unity. With a high level of confidence (α=0.99), we find a qualitative change in behaviour around Rossby number values Ro≃1. For Ro>1, coronal activity drops more rapidly with increasing Rossby number as for Ro<1. Assuming an exponential relation between the LX/Lbol ratios and Rossby number, Ro≃1/3 is the characteristic Rossby number for a drop of X-ray activity.

Abstract Copyright: ∼

Journal keyword(s): stars: activity - stars: late-type - stars: coronae - X-rays: stars

Simbad objects: 101

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Number of rows : 101
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 HD 123 ** 00 06 15.81412 +58 26 12.2207       7.01   G3V+G8V 194 0
2 * 9 Cet BY* 00 22 51.7884553555 -12 12 33.969921319 7.29 7.05 6.39     G2.5V 510 0
3 * 54 Psc PM* 00 39 21.8053928046 +21 15 01.712899720 7.29 6.71 5.88 5.21 4.82 K0.5V 630 1
4 HD 4628 PM* 00 48 22.9759750919 +05 16 50.209484954 7.22 6.64 5.74 4.99 4.52 K2.5V 544 0
5 * 44 And PM* 01 10 18.7404097416 +42 04 53.309986932   6.249 5.665     F8V 194 0
6 HD 11507 PM* 01 52 49.1725594618 -22 26 05.488146613 11.572 10.322 8.883 7.975 7.072 M0V 146 0
7 HD 16160 PM* 02 36 04.9013368983 +06 53 12.383654295   6.81   5.2   K3V 583 0
8 HD 16673 SB* 02 40 12.4210104672 -09 27 10.335330216   6.294 5.790     F8VFe-0.4 262 0
9 HD 17576 Ro* 02 48 07.9314892776 -36 58 53.722194132   8.45 7.90 8.80 7.114 G1V 49 0
10 HD 17925 RS* 02 52 32.1281856011 -12 46 10.968056223 7.48 6.91 6.05 5.34 4.89 K1V 557 0
11 * kap01 Cet BY* 03 19 21.6964175772 +03 22 12.714979884 5.71 5.52 4.85 4.27 3.91 G5V 948 0
12 * eps Eri BY* 03 32 55.8444911587 -09 27 29.739493865 5.19 4.61 3.73 3.00 2.54 K2V 2073 1
13 V* V810 Tau BY* 03 43 02.9441671032 +24 40 11.149283892 15.149 12.97 12.03   10.98 G8 105 0
14 V* V811 Tau BY* 03 45 21.1862906887 +23 43 38.888404751 14.771 13.67 12.57   11.24 G5 102 0
15 V* OU Tau Y*O 03 45 32.9384507670 +24 18 11.646082836   14.63 13.36   12.02 K4V 122 0
16 V* V855 Tau Y*O 03 45 40.1782648711 +24 37 38.007136109   10.6 9.9   9.05 F9V 108 1
17 V* V812 Tau BY* 03 46 04.1263211184 +23 24 19.878193476 14.725 13.73 12.66   11.62 K3V 103 0
18 V* V813 Tau BY* 03 46 06.5022556056 +24 34 02.743919580   13.82 12.76 12.66 11.59 G5 101 0
19 V* V641 Tau Y*O 03 46 27.7743108351 +23 35 33.771415161 15.602 14.28 13.05   11.52 G9 121 0
20 Cl Melotte 22 OpC 03 46 38.0 +24 10 41           ~ 3679 0
21 V* V814 Tau BY* 03 46 39.3864483531 +24 01 46.867039992   13.04 12.13   11.24 K3V 122 0
22 V* V815 Tau BY* 03 47 13.5327654004 +23 42 51.437976573   13.45 12.41   11.43 K4V 112 0
23 V* QX Tau Y*O 03 47 41.4393422685 +23 58 18.939833580   14.85 13.58   12.11 K5 116 0
24 V* V660 Tau Er* 03 48 28.0289494257 +23 18 02.731712608   13.66 12.60   11.43 K2V 121 0
25 V* V545 Tau Y*O 03 48 49.3174984680 +23 58 38.132788908   13.61 12.65   11.50 K3 97 0
26 V* V816 Tau BY* 03 51 53.3859880635 +24 23 13.082093440   13.67 12.69   11.54 K0V 97 0
27 HD 285690 BY* 04 18 19.2717491592 +16 05 17.992962636   10.532 9.548 9.015 8.557 K0 171 0
28 V* V893 Tau BY* 04 18 57.9745736544 +19 54 24.124484232   9.345 8.597 8.192 7.829 G9V 170 0
29 HD 27406 BY* 04 20 12.9666179232 +19 14 00.518450172   8.016 7.444 7.131 6.826 F9V+ 216 0
30 V* V988 Tau BY* 04 23 22.8504016872 +19 39 31.317351336   10.290 9.381     K0 138 0
31 V* V989 Tau BY* 04 23 25.2803352600 +15 45 47.242184616   11.885 10.472 10.19   K5V 134 0
32 V* V895 Tau BY* 04 24 12.4710867960 +14 45 29.565731196   8.217 7.583 8.43   G0V(e) 237 0
33 V* V990 Tau BY* 04 24 16.9397582328 +18 00 10.513833732   11.035 9.966 9.364 8.864 K5V 147 0
34 HD 27859 BY* 04 24 28.3269703416 +16 53 10.202918748   8.382 7.790     G2V 245 0
35 HD 285742 BY* 04 25 00.2471046840 +16 59 05.630869176   11.276 10.248 9.665 9.178 K4V 106 0
36 V* V992 Tau PM* 04 26 05.8393913496 +15 31 27.634430748 8.11 8.027 7.472 7.161 6.858 F8V 161 0
37 V* V906 Tau BY* 04 26 24.6221111736 +16 51 12.069956916 8.86 8.69 8.05 7.51 7.16 G1V 234 0
38 HD 28099 BY* 04 26 40.1217122952 +16 44 48.885808416 8.98 8.78 8.12 7.56 7.23 G2+V 450 0
39 V* V993 Tau BY* 04 27 35.8912011816 +15 35 21.090336828   7.949 7.404 7.102 6.805 F8V 262 0
40 V* V918 Tau BY* 04 28 37.2160468224 +19 44 26.481269436   9.316 8.580 8.182 7.816 G5 158 0
41 HD 28344 BY* 04 28 48.2984108040 +17 17 07.685984400 8.57 8.456 7.837 7.498 7.180 G2V 303 0
42 V* V994 Tau BY* 04 28 50.8141439320 +16 17 20.183418331   12.001 10.698 10.349   K4V 68 0
43 HD 285773 BY* 04 29 31.6063777896 +17 53 35.460179628 10.28 9.761 8.934 8.486 8.093 K0V 223 0
44 Cl Melotte 25 OpC 04 30 27.4 +16 46 43           ~ 3309 0
45 V* V996 Tau BY* 04 32 50.1196981848 +16 00 20.931733080   9.85 8.900 9.02   K0V 124 0
46 V* V997 Tau BY* 04 32 59.4512605248 +15 49 08.284758672   9.396 8.641 8.235 7.867 G8V 187 0
47 HD 28992 BY* 04 34 35.3100676992 +15 30 16.642906992   8.530 7.898 7.556 7.226 G1V 234 0
48 HD 29310 BY* 04 37 31.9851921240 +15 08 47.260104684   8.153 7.545     G0 191 0
49 * 58 Eri BY* 04 47 36.2917029384 -16 56 04.040472552   6.14 5.50     G2.5IV-V 466 0
50 V* V1005 Ori BY* 04 59 34.8342878424 +01 47 00.669818328   11.48 10.107 9.603 8.239 M0Ve 371 0
51 * 111 Tau BY* 05 24 25.4632701888 +17 23 00.726415944   5.52   4.7   F8V 370 0
52 V* AB Dor TT* 05 28 44.8712165880 -65 26 55.199147208 8.259 7.856 6.999 6.496 5.993 K0V 1080 0
53 * chi01 Ori SB* 05 54 22.9829893 +20 16 34.222038 5.08 5.00 4.40 3.90 3.59 G0V 895 0
54 HD 42807 RS* 06 13 12.5028624208 +10 37 37.712484445   7.12   6.0   G5V 254 0
55 V* YZ CMi PM* 07 44 40.1723046464 +03 33 08.875227574 13.761 12.831 11.225 9.958 8.263 M4.0Ve 957 0
56 * pi.01 UMa BY* 08 39 11.7046112880 +65 01 15.263122512 6.33 6.26 5.64 5.12 4.79 G0.5V 608 0
57 V* LQ Hya BY* 09 32 25.5683895648 -11 11 04.692242760 9.316 8.761 7.891 7.288 6.815 K1Vp 480 0
58 MCC 124 BY* 10 14 19.1632274905 +21 04 29.817290641 12.667 11.451 10.083 9.155 8.250 M0.7V 133 1
59 V* AD Leo PM* 10 19 36.2808181226 +19 52 12.010446571   10.82 9.52 9.19   dM3 1469 1
60 HD 89744 PM* 10 22 10.5618854376 +41 13 46.309698444   6.25 5.72     F7V 360 1
61 V* DS Leo BY* 11 02 38.3420210088 +21 58 01.700013360 12.246 11.049 9.572 8.638 7.634 M1.0Ve 269 0
62 HD 95735 PM* 11 03 20.1948195942 +35 58 11.576182057 10.030 8.960 7.520 5.99 4.79 M2+V 795 0
63 HD 97334 BY* 11 12 32.3503039560 +35 48 50.688978228   7.02 6.41     G2 306 0
64 HD 98712 BY* 11 21 26.66383 -20 27 13.6236           K7V+M2.5Ve 105 1
65 * 88 Leo ** 11 31 44.9441592503 +14 21 52.210714391   6.77   5.9   F9.5V 226 0
66 * 61 UMa PM* 11 41 03.0162706212 +34 12 05.881605449 6.31 6.08 5.34 4.73 4.38 G8V 654 0
67 HD 102077 BY* 11 44 38.4210169656 -49 25 02.404105608   10.04 8.917   7.831 K1V 99 0
68 BD+36 2322 BY* 12 57 40.2569835641 +35 13 29.629213095   12.02 10.52 10.137   M0V+M4/5V 242 1
69 BD+13 2618 RS* 13 00 46.5566863405 +12 22 32.677229903 12.314 11.233 9.750 8.785 7.653 M0V 383 1
70 * bet Com PM* 13 11 52.3938268062 +27 52 41.462309460 4.92 4.84 4.25 3.77 3.47 F9.5V 946 0
71 * e Vir PM* 13 16 46.5148594512 +09 25 26.960139646   5.81   4.8   G0IV 590 1
72 HD 115404 PM* 13 16 51.0514297623 +17 01 01.840901307   7.69 6.66     K2V 316 0
73 HD 118100 PM* 13 34 43.2063495866 -08 20 31.338030204 11.578 10.552 9.372 8.602 7.930 K5Ve 360 0
74 * alf Cen B PM* 14 39 35.06311 -60 50 15.0992 2.89 2.21 1.33     K1V 1092 2
75 * alf Cen A SB* 14 39 36.49400 -60 50 02.3737 0.96 0.72 0.01     G2V 1352 1
76 * ksi Boo B PM* 14 51 23.0436810216 +19 06 06.887747916   7.981 6.816     K5Ve 376 0
77 * ksi Boo BY* 14 51 23.37993 +19 06 01.6994 5.618 5.370 4.593 3.91 3.48 G7Ve+K5Ve 503 0
78 * ksi Boo A PM* 14 51 23.3884659504 +19 06 01.619801424   5.40 4.675     G7Ve 564 0
79 * lam Ser PM* 15 46 26.6142121632 +07 21 11.047378824 5.13 5.03 4.42 3.92 3.60 G0-V 618 0
80 * 12 Oph BY* 16 36 21.4496896968 -02 19 28.513024233 7.00 6.55 5.77 5.13 4.74 K1V 525 0
81 HD 152391 PM* 16 52 58.8025159848 -00 01 35.118396116   7.40 6.64     G8.5Vk: 396 0
82 V* V2213 Oph BY* 17 05 16.8186610814 +00 42 09.221511649   6.59   5.6   F8.5IV-V 352 0
83 * 36 Oph A PM* 17 15 20.7836485323 -26 36 06.117207947   5.93 5.08     K2V 293 1
84 * 36 Oph B PM* 17 15 20.9838262152 -26 36 10.173444860   5.88 5.03     K1V 264 1
85 V* V2215 Oph RS* 17 16 13.3624141798 -26 32 46.136563394   7.50 6.34   4.8 K5V 334 0
86 G 226-66 PM* 17 35 34.4785242391 +61 40 53.628113703   11.40 9.98 9.52 8.01 M1V 166 0
87 HD 160346 SB* 17 39 16.9163262 +03 33 18.875718   7.496 6.525 5.9   K3-V 321 0
88 * 70 Oph SB* 18 05 27.28518 +02 30 00.3558 5.40 4.89 4.03 3.38 2.92 K0-V 679 0
89 HD 166620 PM* 18 09 37.4162111401 +38 27 27.998016381 7.86 7.27 6.40 5.63 5.14 K2V 481 0
90 BD-10 4662 TT* 18 20 22.74972 -10 11 13.6263   12.00 10.62 10.24 8.884 K5Ve+K7Ve 89 0
91 HD 190007 BY* 20 02 47.0456863896 +03 19 34.265904204   8.60   6.8   K5V 246 0
92 * 15 Sge PM* 20 04 06.2207683221 +17 04 12.676556401   6.390 5.788 5.4   G0V 420 0
93 HD 197481 BY* 20 45 09.5324974119 -31 20 27.237889841   10.05 8.627 9.078 6.593 M1VeBa1 1344 0
94 * 61 Cyg A BY* 21 06 53.9395895022 +38 44 57.902349973 7.50 6.39 5.21 4.19 3.54 K5V 1099 0
95 * 61 Cyg B PM* 21 06 55.2638444466 +38 44 31.358519864 8.63 7.40 6.03 4.86 3.55 K7V 765 0
96 V* HN Peg BY* 21 44 31.3299461136 +14 46 18.983292600       6.16   G0V+ 561 0
97 V* EV Lac PM* 22 46 49.7312610268 +44 20 02.374381562   11.85 10.26 9.89   M4.0Ve 993 2
98 HD 216133 PM* 22 50 19.4243064528 -07 05 24.378878724 12.519 11.316 9.847 8.933 8.02 M0.5V 123 0
99 V* TW PsA BY* 22 56 24.0525564918 -31 33 56.030584767   7.58 6.48     K4Ve 316 0
100 V* HK Aqr BY* 23 08 19.5510173448 -15 24 35.766079704 13.4 12.282 10.872 9.964 9.019 M0Ve 219 0
101 * 94 Aqr B PM* 23 19 06.5609055384 -13 27 18.901354254         8.37 K2 96 1

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