2007A&A...469..309C


C.D.S. - SIMBAD4 rel 1.7 - 2020.11.29CET17:47:06

2007A&A...469..309C - Astronomy and Astrophysics, volume 469, 309-317 (2007/7-1)

Hα and the Ca II H and K lines as activity proxies for late-type stars.

CINCUNEGUI C., DIAZ R.F. and MAUAS P.J.D.

Abstract (from CDS):

The main chromospheric activity indicator is the S index, which is the ratio of the flux in the core of the Ca II H and K lines to the continuum nearby, and is well studied for stars from F to K. Another chromospheric proxy is the Hα line, which is believed to be tightly correlated with the Ca II index. In this work we characterize both chromospheric activity indicators, the one associated with the H and K Ca II lines and the other with Hα, for the whole range of late type stars, from F to M. We present periodic medium-resolution echelle observations covering the complete visual range, taken at the CASLEO Argentinean Observatory over 7 years. We use a total of 917 flux-calibrated spectra for 109 stars that range from F6 to M5. We statistically study these two indicators for stars of different activity levels and spectral types. We directly derive the conversion factor that translates the known S index to flux in the Ca II cores, and extend its calibration to a wider spectral range. We investigate the relation between the activity measurements in the calcium and hydrogen lines, and found that the usual correlation observed is the product of the dependence of each flux on stellar colour, and not the product of similar activity phenomena.

Abstract Copyright:

Journal keyword(s): stars: late-type - stars: activity - stars: chromospheres

VizieR on-line data: <Available at CDS (J/A+A/469/309): table2.dat>

Simbad objects: 109

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Number of rows : 109

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 HD 225213 Er* 00 05 24.4278018131 -37 21 26.504223709 11.074 10.022 8.562 7.589 6.432 M2V 185 0
2 * 9 Cet BY* 00 22 51.7883318927 -12 12 33.972374893 7.29 7.05 6.39     G2.5V 454 0
3 HD 3405 SB* 00 36 37.9766776140 -49 07 56.373250320   7.42 6.78     G3V 66 0
4 HD 3443 SB* 00 37 20.71960 -24 46 02.1843   6.28 5.57     K1V+G 226 0
5 HD 3795 PM* 00 40 32.7956054102 -23 48 17.719009278   6.84 6.14     K0VFe-1.5CH-1.3 181 0
6 HD 4308 PM* 00 44 39.2675256910 -65 38 58.282490370 7.31 7.193 6.552     G6VFe-0.9 220 1
7 HD 4967 PM* 00 51 34.0201514770 -22 54 36.241572330 11.446 10.256 8.954 8.157 7.467 K5V 87 1
8 HD 5869 * 00 59 44.4222373569 -31 20 10.272073740   8.96 7.50     K4V 14 0
9 HD 9562 PM* 01 33 42.8353548073 -07 01 31.236482634 6.61 6.40 5.76     G1V 236 0
10 * tau Cet PM* 01 44 04.0834226 -15 56 14.926552 4.43 4.22 3.50 2.88 2.41 G8V 1106 1
11 V* EZ Cet BY* 01 49 23.3505045594 -10 42 13.019336799 7.49 7.386 6.754 6.392 6.04 G3V 151 0
12 HD 12759 ** 02 03 55.25101 -45 24 46.4628   9.04 8.73 7.91   G5V 54 0
13 HD 13445 PM* 02 10 25.9190575041 -50 49 25.467227759   6.945 6.117     K1.5V 420 1
14 HD 16673 SB* 02 40 12.4221262303 -09 27 10.336039665   6.294 5.790     F8VFe-0.4 218 0
15 * iot Hor PM* 02 42 33.4664838826 -50 48 01.056222150   5.97 5.40     F8V 345 1
16 HD 17576 Ro* 02 48 07.9301049457 -36 58 53.705130422   8.45 7.90 8.80 7.114 G1V 43 0
17 HD 17925 RS* 02 52 32.1281853696 -12 46 10.970649463 7.48 6.91 6.05 5.34 4.89 K1V 475 0
18 HD 19034 PM* 03 03 38.9588060909 -05 39 58.670862990 8.89 8.76 8.09     G5V 112 0
19 HD 19467 PM* 03 07 18.5750358835 -13 45 42.419198459   7.65 7.00 7.79 8.82 G3V 127 0
20 * 94 Cet PM* 03 12 46.4369076602 -01 11 45.949836281   5.631 5.070     F8.5V 408 1
21 * zet01 Ret PM* 03 17 46.1632605674 -62 34 31.154247481 6.24 6.18 5.54 5.00 4.66 G2.5VHdel1 272 0
22 HD 20619 PM* 03 19 01.8944014526 -02 50 35.492892644 7.82 7.697 7.039 6.691 6.343 G1.5V 168 0
23 * eps Eri BY* 03 32 55.8449634 -09 27 29.731165 5.19 4.61 3.73 3.00 2.54 K2V 1721 1
24 * del Eri RS* 03 43 14.9008787 -09 45 48.208444 5.13 4.46 3.54 2.82 2.32 K0+IV 548 0
25 HD 25069 RG* 03 58 52.3938998575 -05 28 11.810156197   6.848 5.833     K0/1III 64 0
26 * omi02 Eri Er* 04 15 16.3197260 -07 39 10.338087 5.69 5.25 4.43 3.74 3.29 K0V 748 0
27 * eps Ret PM* 04 16 29.0292136 -59 18 07.761375 6.59 5.52 4.44 3.62 3.08 K2III 215 1
28 HD 28246 PM* 04 25 19.1197902282 -44 09 39.224831350   6.811 6.383     F5.5V 40 0
29 * 58 Eri BY* 04 47 36.2917607568 -16 56 04.041927355   6.14 5.50     G2.5IV-V 389 0
30 HD 32147 PM* 05 00 48.9991346145 -05 45 13.220341956 8.27 7.27 6.21 5.36 4.87 K3+V 418 1
31 V* AF Lep RS* 05 27 04.7631691589 -11 54 03.466187467   6.832 6.295     F8V(n)k: 211 0
32 HD 36435 PM* 05 27 39.3523551876 -60 24 57.584559812 8.068 7.75 6.983 6.573 6.191 G5V 106 0
33 HD 36395 PM* 05 31 27.3958475290 -03 40 38.021551815 10.626 9.443 7.968 6.996 5.913 M1.5Ve 434 0
34 V* UY Pic RS* 05 36 56.8530716709 -47 57 52.884166166   8.77 7.676   6.699 K0V 115 0
35 V* AK Lep BY* 05 44 26.5368916746 -22 25 18.614358408   7.09 6.15     K3 155 0
36 * gam Lep PM* 05 44 27.7908940 -22 26 54.180763 4.08 4.07 3.60 3.15 2.89 F6V 397 0
37 HD 38858 PM* 05 48 34.9401453172 -04 05 40.719529406 6.71 6.61 5.97     G2V 258 1
38 V* SZ Pic RS* 05 53 27.3641552405 -43 33 31.319472519   8.66 7.906   6.974 G8V 61 0
39 HD 41824 RS* 06 04 46.68146 -48 27 29.8706       7.57   G5V 91 0
40 HD 42581 Er* 06 10 34.6152510171 -21 51 52.658021185 10.801 9.607 8.125 7.164 6.121 M1V 404 0
41 HD 43587 SB* 06 17 16.1298959119 +05 05 59.915616770 6.400 6.290   5.3   G0V 216 0
42 HD 45270 PM* 06 22 30.9412022189 -60 13 07.143258224 7.186 7.11 6.508   5.87 G1V 103 0
43 HD 45067 PM* 06 25 16.5464141963 -00 56 45.178168018   6.43 5.90     F9V 175 0
44 HD 48189 BY* 06 38 00.3760790738 -61 32 00.101786310   6.747 6.182   5.46 G1/2V 128 0
45 HD 52265 PM* 07 00 18.0357152121 -05 22 01.778490073   6.845 6.282     G0V 292 1
46 V* V361 Pup EB* 07 07 53.0493639490 -34 50 00.231199007   8.94 8.029   7.344 G0V 34 0
47 HD 59967 PM* 07 30 42.5117283582 -37 20 21.704201159 7.386 7.274 6.635 6.28 5.945 G3V 132 0
48 HD 75289 PM* 08 47 40.3895634256 -41 44 12.456269569 7.04 6.94 6.36     F9VFe+0.3 247 1
49 HD 82106 PM* 09 29 54.8254745613 +05 39 18.479206637 9.071 8.223 7.197 6.626 6.13 K3V 191 0
50 CD-45 5627 Er* 09 58 34.3230661116 -46 25 30.404116219 13.77 12.8 11.320 10.133 8.635 M3Ve 81 1
51 BD+20 2465 Er* 10 19 36.2808024653 +19 52 12.014037746   10.82 9.52 9.19   dM3 1163 0
52 HD 94683 * 10 54 29.6030535559 -61 49 35.833950503 9.61 7.73 5.90     K4III 19 0
53 HD 97233 PM* 11 11 33.1730409451 -14 59 28.890143448 11.394 10.26 9.038 8.285 7.607 K5Vk: 76 1
54 HD 101581 PM* 11 41 02.4681810357 -44 24 18.682430854 9.753 8.833 7.762 7.127 6.584 K4.5Vk: 99 0
55 HD 103112 PM* 11 52 20.9007441314 +09 56 53.031446307   8.59   6.9   K0 36 0
56 HD 105115 * 12 06 12.9915378564 -38 40 32.443730759   8.29 6.88     K2/3V 11 0
57 CD-51 6859 PM* 12 37 52.2156541938 -52 00 05.321462032 13.397 12.198 10.663 9.586 8.233 M3V(e) 95 0
58 HD 114762 SB* 13 12 19.7467346230 +17 31 01.611425890 7.78         F9VgF8mF4+M6?V 514 1
59 * 70 Vir PM* 13 28 25.8081883620 +13 46 43.642951116 5.930 5.680 4.970 4.37 3.98 G4Va 675 1
60 HD 118100 Er* 13 34 43.2063348511 -08 20 31.335294003 11.578 10.552 9.372 8.602 7.930 K5Ve 325 0
61 V* V851 Cen RS* 13 44 00.9207917868 -61 21 59.167786170   8.74 7.798   6.638 K0III 77 0
62 HD 119850 Er* 13 45 43.7754528655 +14 53 29.473195472 10.989 9.894 8.50 7.465 6.363 M2V 293 0
63 * tau Boo Ro* 13 47 15.74340 +17 27 24.8552 5.02 4.98 4.49 4.09 3.85 F7IV-V 890 1
64 HD 122303 PM* 14 01 03.1881878880 -02 39 17.514921066 12.343 11.177 9.707 8.745 7.66 M0V 130 0
65 V* V759 Cen EB* 14 10 41.2606316489 -47 46 08.388230489   8.11 7.54     G0V 52 0
66 HD 125072 PM* 14 19 04.8341367419 -59 22 44.535027477   7.69 6.66     K3IV 137 0
67 NAME Proxima Centauri Er* 14 29 42.9451234609 -62 40 46.170818907 14.21 12.95 11.13 9.45 7.41 M5.5Ve 994 0
68 * alf Cen B PM* 14 39 35.06311 -60 50 15.0992 2.89 2.21 1.33     K1V 905 1
69 * alf Cen A SB* 14 39 36.49400 -60 50 02.3737 0.96 0.72 0.01     G2V 1147 0
70 HD 130948 BY* 14 50 15.8107686483 +23 54 42.633203114   6.456 5.867     F9IV-V 254 0
71 HD 131977 BY* 14 57 28.0008928545 -21 24 55.726897561 7.89 6.83 5.72 4.74 4.19 K4V 450 0
72 HD 144253 SB* 16 05 40.4745100834 -20 27 00.102383135 9.379 8.456 7.393 6.784 6.261 K3V 75 0
73 * 18 Sco PM* 16 15 37.2703721200 -08 22 09.981989277   6.15 5.50     G2Va 494 0
74 HD 147513 PM* 16 24 01.2905970257 -39 11 34.734611237 6.17 6.02 5.376     G5V 314 1
75 HD 150433 PM* 16 41 08.2147823122 -02 51 26.202219924   7.861 7.22 6.80 8.70 G5V 96 1
76 HD 151770 Ro* 16 50 57.4777346948 -36 45 19.083405212   9.72 8.362   7.502 G3IV 27 0
77 HD 152391 Ro* 16 52 58.8025427362 -00 01 35.116299669   7.40 6.64     G8.5Vk: 339 0
78 V* V2215 Oph RS* 17 16 13.3627374963 -26 32 46.133091527   7.50 6.34   4.8 K5V 281 0
79 HD 156425 * 17 18 58.2472144538 -32 57 55.798356401   9.66 7.83     K4(V) 8 0
80 HD 157881 PM* 17 25 45.2323043669 +02 06 41.123668100 10.126 8.865 7.56 6.649 5.89 K7V 311 0
81 HD 158614 SB* 17 30 23.79699 -01 03 46.4882 6.34 6.03 5.31 5.52   G9-IV-VHdel1 282 0
82 * mu. Ara PM* 17 44 08.7036342277 -51 50 02.591049123   5.85 5.15     G3IV-V 473 2
83 NAME Barnard's star BY* 17 57 48.4997994034 +04 41 36.111354228 12.497 11.24 9.511 8.298 6.741 M4V 672 2
84 HD 165185 PM* 18 06 23.7191233830 -36 01 11.229463639 6.64 6.57 5.95 5.58   G1V 150 0
85 HD 172051 ** 18 38 53.4015065712 -21 03 06.741519593   6.518 5.860     G6V 172 1
86 HD 173560 PM* 18 48 33.2792503975 -50 42 11.901911895   9.29 8.67     G3/5V 40 0
87 Ross 154 Er* 18 49 49.3638007809 -23 50 10.453568573 13.528 12.19 10.43 10.23 7.703 M3.5Ve 328 0
88 HD 177996 PM* 19 08 50.4827467870 -42 25 41.233817269   8.74 7.88     K1V 51 0
89 HD 180617 Ro* 19 16 55.2565250393 +05 10 08.038856129 11.768 10.63 9.115 8.076 6.782 M3-V 356 0
90 HD 187923 PM* 19 52 03.4385267267 +11 37 41.972536021   6.78   5.8   G0V 184 0
91 HD 188088 BY* 19 54 17.7452778997 -23 56 27.862976419   7.263 6.213 5.58 5.09 K3VaCN1 119 0
92 HD 189567 PM* 20 05 32.7652367983 -67 19 15.228862402 6.79 6.71 6.07     G2V 201 1
93 HD 197076 PM* 20 40 45.1407864181 +19 56 07.928511642 7.14 7.06 6.44 5.95 5.61 G5V 222 0
94 HD 197214 SB* 20 43 15.9971544063 -29 25 26.107915068 7.778 7.635 6.960 6.583 6.229 G6V 77 0
95 HD 202628 PM* 21 18 27.2693236958 -43 20 04.746121764   7.39 6.742     G5V 145 0
96 HD 203019 PM* 21 20 46.5927872514 -38 46 53.193486597   8.54 7.86     G7V 31 0
97 HD 202917 Ro* 21 20 49.9575453387 -53 02 03.157635940   9.32 8.67   7.882 G7V 142 0
98 HD 202996 PM* 21 20 50.8602564252 -45 48 39.153923152   8.04 7.44     G0V 28 0
99 HD 203244 PM* 21 24 40.5220958049 -68 13 40.527845137   7.70 6.97     G5V 72 0
100 * eps Ind PM* 22 03 21.6542294981 -56 47 09.537018193   5.75 4.69     K5V 481 0
101 HD 210918 PM* 22 14 38.65336 -41 22 53.9866 7.02 6.88 6.23     G2V 181 0
102 HD 212330 SB* 22 24 56.3720716646 -57 47 50.824747845 6.09 5.96 5.31 4.79 4.40 G2IV-V 129 0
103 HD 213240 PM* 22 31 00.3665162994 -49 25 59.767492660   7.41 6.80     G0/1V 151 1
104 HD 213941 PM* 22 36 07.7033175942 -54 36 38.232133858   8.25 7.59     G8VFe-1.3 86 0
105 HD 215768 PM* 22 48 06.9195176485 -37 45 23.983142573   8.08 7.49     G0VCH-0.3 32 0
106 V* TW PsA BY* 22 56 24.0532946025 -31 33 56.035064606   7.58 6.48     K4Ve 270 0
107 HD 217343 PM* 23 00 19.2872945687 -26 09 13.506860661   8.12 7.48   6.75 G5V 96 0
108 HD 219709 SB* 23 18 36.6759279554 -58 18 22.864298271   8.15 7.51     G1V 45 0
109 * 94 Aqr SB* 23 19 06.7256972451 -13 27 31.614580771   5.95 5.18     G8.5IV 193 0

    Equat.    Gal    SGal    Ecl

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2020.11.29-17:47:06

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