1999MNRAS.310.1023A


C.D.S. - SIMBAD4 rel 1.7 - 2021.06.24CEST06:03:06

1999MNRAS.310.1023A - Mon. Not. R. Astron. Soc., 310, 1023-1032 (1999/December-3)

Photometric modelling of starspots - I. A Barnes-Evans-like surface brightness-colour relation using (Ic-K).

AMADO P.J., BUTLER C.J. and BYRNE P.B.

Abstract (from CDS):

In the first part of this work, the empirical correlation of stellar surface brightness FV with (Ic-K) broad-band colour is investigated by using a sample of stars cooler than the Sun. A bilinear correlation is found to represent well the brightness of G, K and M giant stars. The change in slope occurs at (Ic-K)∼2.1 or at about the transition from K to M spectral types. The same relationship is also investigated for dwarf stars and found to be distinctly different from that of the giants. The dwarf star correlation differs by an average of -0.4 in (Ic-K) or by a maximum in FV of ~-0.1, positioning it below that of the giants, with both trends tending towards convergence for the hotter stars in our sample. The flux distribution derived from the FV-(Ic-K) relationship for the giant stars, together with that derived from an FV-(V-K) relationship and the blackbody flux distribution, is then utilized to compute synthetic light V and colour (V-R)c, (V-I)c and (V-K) curves of cool spotted stars. We investigate the effects on the amplitudes of the curves by using these FV-colour relations and by assuming the effective gravity of the spots to be lower than the gravity of the unspotted photosphere. We find that the amplitudes produced by using the FV-(Ic-K) relationship are larger than those produced by the other two brightness correlations, meaning smaller and/or warmer spots.

Abstract Copyright: 1999, Royal Astronomical Society

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

Simbad objects: 110

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Number of rows : 110

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 G 158-27 PM* 00 06 43.1972293497 -07 32 17.024270968     13.837 13.605 10.15 M5.5V 177 0
2 * chi Peg PM* 00 14 36.1645107 +20 12 24.120523 8.280 6.380 4.800 3.45 2.32 M2+III 181 0
3 V* GQ And Er* 00 18 25.8244484426 +44 01 38.091239561   12.84 11.04 10.3   M3.5Ve 246 0
4 * 47 Psc LP* 00 28 02.9123161359 +17 53 35.243795107 8.53 6.71 5.06 3.32 1.78 M3III 97 0
5 * del Psc PM* 00 48 40.94433 +07 35 06.2926 7.83 5.95 4.44 3.27 2.40 K5-III 179 0
6 * eta Cas PM* 00 49 06.2907161 +57 48 54.675740 4.04 4.02 3.44 2.94 2.58 F9V 609 0
7 G 69-47 SB* 01 05 37.6463008842 +28 29 33.590183314   16.69   13.7   M5.42 58 0
8 * bet And PM* 01 09 43.92388 +35 37 14.0075 5.58 3.62 2.05 0.81 -0.19 M0+IIIa 538 0
9 G 272-61B Er* 01 39 01.6334059022 -17 57 01.121866655           M6V 805 0
10 * nu. Psc * 01 41 25.8939097 +05 29 15.406225 7.36 5.81 4.44 3.38 2.67 K3III 226 0
11 * ups Cet PM* 02 00 00.3091617 -21 04 40.194571 7.45 5.58 4.02 2.76 1.72 M0III 95 0
12 * alf Ari PM* 02 07 10.40570 +23 27 44.7032 4.29 3.17 2.01 1.15 0.54 K2-IIIbCa-1 610 1
13 * rho02 Ari LP* 02 55 48.4979998 +18 19 53.902936 8.56 7.44 5.93 3.51 1.34 M6-III: 216 0
14 * alf Cet LP? 03 02 16.77307 +04 05 23.0596 6.10 4.17 2.53 1.18 0.02 M1.5IIIa 443 0
15 Wolf 134 LM* 03 13 24.2289034679 +18 49 37.659907109   15.567 14.117 13.219 12.435 esdK7 56 0
16 * gam Eri LP? 03 58 01.7669489 -13 30 30.669770 6.52 4.54 2.94 1.68 0.68 M0III-IIIb 173 0
17 * alf Tau LP? 04 35 55.23907 +16 30 33.4885 4.32 2.40 0.86 -0.37 -1.31 K5+III 1202 1
18 * eps Lep PM* 05 05 27.6653698 -22 22 15.723893 6.41 4.64 3.18 2.08 1.27 K4III 144 0
19 G 96-29 PM* 05 17 23.8621692522 +45 50 22.927563292       9.70   M2.5V 64 0
20 Ross 42 Er* 05 32 14.6562729108 +09 49 14.930460435 14.226 13.158 11.529 10.37 8.868 M4Ve 124 1
21 Ross 47 BY* 05 42 09.2672965388 +12 29 21.611736198 14.264 13.130 11.509 10.298 8.709 M4V 233 0
22 V* V440 Aur LP? 05 51 25.7503310663 +32 07 28.908163321 10.04 8.00 6.26 4.69 3.30 M3III 60 0
23 * mu. Gem LP* 06 22 57.62686 +22 30 48.8979 6.37 4.51 2.87 1.30 -0.08 M3IIIab 369 1
24 HD 260655 PM* 06 37 10.7989276582 +17 33 53.334425520 12.303 11.104 9.593 8.661 7.718 M0.0Ve 149 1
25 * tet CMa PM* 06 54 11.3997692336 -12 02 19.061054441 7.20 5.51 4.08 2.95 2.17 K3/4III 209 0
26 V* QY Aur Er* 07 10 01.8338715851 +38 31 46.086394837   13.26 11.52 11.12   M4.5Ve 217 0
27 BD+05 1668 PM* 07 27 24.49975 +05 13 32.8332 12.558 11.443 9.872 8.699 7.161 M3.5V 355 0
28 * alf Gem A SB* 07 34 35.862828 +31 53 17.79429     1.9     A1.5IV+ 382 0
29 * alf Gem B SB* 07 34 36.100452 +31 53 18.57117     3.0     kA0hA2:mA1IVs 286 1
30 V* YY Gem BY* 07 34 37.4475372002 +31 52 10.181030942 11.60 10.56 9.27 7.69 6.67 M0.5VeFe-2 831 0
31 V* YZ CMi Er* 07 44 40.1726285952 +03 33 08.877830321 13.761 12.831 11.225 9.958 8.263 M4.0Ve 801 0
32 * bet Gem PM* 07 45 18.94987 +28 01 34.3160 3.00 2.14 1.14 0.39 -0.11 K0IIIb 1065 1
33 Ross 619 PM* 08 11 57.5595749358 +08 46 22.983154927   14.60 12.834 12.527   M4.5Ve 173 0
34 * bet Cnc PM* 08 16 30.9210081 +09 11 07.957924 6.750 5.000 3.520 2.42 1.62 K4IIIBa0.5: 346 0
35 G 51-15 Er* 08 29 49.3528237575 +26 46 33.626773321   16.87   14.736   M6.5Ve 260 0
36 * alf Lyn PM* 09 21 03.3007431 +34 23 33.224546 6.63 4.69 3.14 1.91 1.01 K6III 199 0
37 * tet Pyx * 09 21 29.5906789101 -25 57 55.576659259 8.36 6.33 4.72 3.32 2.24 M0.5IIIBa0.5 64 0
38 * alf Hya * 09 27 35.24270 -08 39 30.9583 5.14 3.42 1.97 0.93 0.16 K3IIIa 413 0
39 * pi. Leo V* 10 00 12.8058902 +08 02 39.203224 8.22 6.30 4.70 3.27 2.19 M2-III 140 0
40 * 31 Leo PM* 10 07 54.2705662 +09 59 51.023021 7.57 5.82 4.38 3.26 2.49 K3.5IIIbFe-1: 129 0
41 BD+20 2465 Er* 10 19 36.2808024653 +19 52 12.014037746   10.82 9.52 9.19   dM3 1188 0
42 * 56 Leo LP? 10 56 01.4689991 +06 11 07.327524 8.45 7.24 5.78 3.53 1.44 M5.5III: 162 0
43 Wolf 359 Er* 10 56 28.826208 +07 00 52.34400 16.706 15.541 13.507 11.684 9.507 dM6 644 0
44 HD 95735 Er* 11 03 20.19400 +35 58 11.5682 10.030 8.960 7.520 5.99 4.79 M2+V 646 0
45 * ups Leo * 11 36 56.9308590 -00 49 25.496304 6.05 5.31 4.30 3.58 3.06 G9IIIbFe-0.5 122 0
46 * nu. Vir LP* 11 45 51.5595736 +06 31 45.741287 7.32 5.54 4.04 2.79 1.78 M1III 243 0
47 Ross 128 Er* 11 47 44.3968668170 +00 48 16.404931305 14.223 12.905 11.153 9.859 8.184 dM4 355 0
48 * eps Crv PM* 12 10 07.4805825 -22 37 11.161983 5.79 4.32 2.98 2.05 1.41 K2+IIIa 138 0
49 Wolf 424 Er* 12 33 17.361480 +09 01 15.79224 15.398 14.313 12.467 10.937 8.988 M5.5V 305 0
50 * bet CVn ** 12 33 44.5448195 +41 21 26.924857 4.91 4.86 4.25 3.73 3.42 G0V 550 0
51 * psi Vir LP* 12 54 21.1634176 -09 32 20.378283 7.94 6.39 4.80 3.23 1.95 M3-III 160 0
52 * del Vir RG* 12 55 36.2086058 +03 23 50.893225 6.76 4.97 3.38 1.86 0.53 M3+III 260 0
53 G 61-21 PM* 12 56 23.7398527018 +15 41 44.594776737   15.117 13.791 12.972 12.258 sdK 37 0
54 BD+13 2618 Er* 13 00 46.5602816848 +12 22 32.716799085 12.314 11.233 9.750 8.785 7.653 M0V 311 1
55 * eps Vir PM* 13 02 10.5978496 +10 57 32.941443 4.45 3.71 2.79 2.16 1.71 G8III-IIIb 526 0
56 V* RS CVn RS* 13 10 36.9078781154 +35 56 05.587686902 8.57 8.51 7.93 7.7   F6IV+G8IV 692 0
57 * bet Com PM* 13 11 52.3937856 +27 52 41.453553 4.92 4.84 4.25 3.77 3.47 F9.5V 858 0
58 V* FK Com PM* 13 30 46.7993742986 +24 13 57.786184235   9.04 8.245   7.204 G4III 356 1
59 * 83 UMa LP* 13 40 44.2733508 +54 40 53.889137 8.25 6.29 4.66 3.26 2.14 M2III 133 0
60 * eta Boo SB* 13 54 41.07892 +18 23 51.7946 3.440 3.250 2.680 2.24 1.95 G0IV 664 1
61 V* BY Boo LP? 14 07 55.7560046 +43 51 16.025944 8.52 6.86 5.28 3.43 1.77 M4.5III 168 0
62 * kap Vir PM* 14 12 53.7453840 -10 16 25.333997 7.00 5.53 4.21 3.14 2.39 K2.5IIIFe-0.5 134 0
63 * alf Boo RG* 14 15 39.67207 +19 10 56.6730 2.46 1.18 -0.05 -1.03 -1.68 K1.5IIIFe-0.5 2182 0
64 LP 271-25 LM* 14 28 43.2272685950 +33 10 39.245755294   21.2   17.8   M9Ve 235 0
65 LP 440-52 LM* 14 39 00.3087274496 +18 39 38.704121134   19.6 18.39 17.3 14.64 sdM7 60 0
66 V* RR UMi LP* 14 57 35.0072853 +65 55 56.856956 7.86 6.19 4.54 2.69 0.97 M4.5III 169 0
67 * bet Boo Er* 15 01 56.7623786 +40 23 26.040607 5.21 4.47 3.52 2.85 2.37 G8IIIaFe-0.5 243 0
68 * del Boo PM* 15 15 30.1629518 +33 18 53.392558 5.12 4.44 3.49 2.76 2.25 G8IIIFe-1 363 0
69 * 42 Lib * 15 40 16.8983538966 -23 49 05.075358909 7.80 6.29 4.96 4.00 3.32 K3-IIICN2 112 0
70 * alf Ser PM* 15 44 16.0743159 +06 25 32.263272 5.080 3.800 2.630 1.82 1.25 K2IIIbCN1 502 0
71 * eps CrB PM* 15 57 35.2514673 +26 52 40.363564 6.650 5.360 4.130 3.27 2.64 K2IIIab 247 1
72 * del Oph PM* 16 14 20.73853 -03 41 39.5612 6.30 4.34 2.75 1.46 0.43 M0.5III 348 0
73 * eps Oph PM* 16 18 19.2897431 -04 41 33.034466 4.95 4.21 3.23 2.54 2.05 G9.5IIIbFe-0.5 227 0
74 * g Her AB* 16 28 38.5485851 +41 52 54.040593 7.70 6.53 5.01 2.49 0.26 M6-III 367 0
75 V* CM Dra BY* 16 34 20.3299130309 +57 09 44.365524588   14.50 12.87 10.85 9.26 M4.5V 412 0
76 EGGR 258 PM* 16 34 21.5517343404 +57 10 08.867977330   15.49   14.9   DQ8 111 0
77 Wolf 629 PM* 16 55 25.2215746210 -08 19 21.301127712 14.691 13.436 11.759 10.574 9.044 M3.5V 197 0
78 HD 152751 Er* 16 55 28.75758 -08 20 10.7876 11.647 10.593 9.023 7.937 6.565 M3.5Ve 494 1
79 VB 8 Er* 16 55 35.2561420232 -08 23 40.752903617   18.7 16.916 14.566 12.24 M7Ve 396 0
80 Ross 868 Er* 17 19 54.2077035026 +26 30 03.066748964   12.98 11.336 11.060 8.420 M3.5V 148 0
81 * mu.01 Her ** 17 46 27.5266778 +27 43 14.437984 4.56 4.17 3.42 2.89 2.51 G5IV 662 0
82 * gam Dra * 17 56 36.36988 +51 29 20.0242 5.630 3.760 2.230 1.08 0.23 K5III 527 0
83 V* OP Her S* 17 56 48.5265986840 +45 21 03.059260128 9.45 7.93 6.32 4.15 2.25 M6S 147 0
84 NAME Barnard's star BY* 17 57 48.4997994034 +04 41 36.111354228 12.497 11.24 9.511 8.298 6.741 M4V 696 2
85 * nu. Oph PM* 17 59 01.5919129 -09 46 25.079852 5.20 4.33 3.34 2.64 2.16 G9IIIa 192 1
86 * lam Sgr PM* 18 27 58.2407185 -25 25 18.114589 4.75 3.85 2.81 2.06 1.50 K1IIIb 263 0
87 V* BY Dra BY* 18 33 55.7719224141 +51 43 08.903033617 10.22 9.23   8.733   K4Ve+K7.5Ve 599 0
88 HD 173740 PM* 18 42 46.8942178098 +59 37 36.723092516   11.705   8.9   M3.5V 298 1
89 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
90 * 13 Lyr LP* 18 55 20.1022285 +43 56 45.931489 7.00 5.59 4.00 1.95 0.04 M5III 303 0
91 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
92 HD 180617 PM* 19 16 55.2565250393 +05 10 08.038856129 11.768 10.63 9.115 8.076 6.782 M3-V 366 0
93 VB 10 Er* 19 16 57.6103282334 +05 09 01.588675251     17.30     M8V 443 1
94 * 16 Cyg A ** 19 41 48.9539315338 +50 31 30.218780803 6.79 6.59 5.95 5.50 5.17 G1.5Vb 693 1
95 * 16 Cyg B PM* 19 41 51.9731830550 +50 31 03.086127222 7.07 6.86 6.20 5.76 5.42 G3V 815 1
96 G 208-44 Er* 19 53 54.4821159649 +44 24 51.341564299   15.31 13.126 13.083 9.78 M5.5Ve 194 1
97 G 208-45 Er* 19 53 55.1388332012 +44 24 54.144273353   15.97 13.99 14.3 10.27 M6V 170 0
98 * ome Cap V* 20 51 49.2909479855 -26 55 08.891176687 7.66 5.75 4.12 2.87 1.93 M0IIIBa0.5 96 0
99 Wolf 918 PM* 21 09 17.4274978426 -13 18 09.019135738 13.501 12.362 10.869 9.891 8.805 M1V 126 0
100 Ross 775 PM* 21 29 36.8120053711 +17 38 35.859512400 13.177 11.928 10.303 9.163 7.709 M3.0Ve 122 0
101 V* HK Lac RS* 22 04 56.6089126762 +47 14 04.482220545   8.01 6.96     K0III 233 0
102 V* EZ Aqr Er* 22 38 33.576000 -15 17 59.75700 15.762 14.33 12.38 12.12 8.677 M5V 287 1
103 * lam Aqr LP* 22 52 36.8772324702 -07 34 46.582981294 7.20 5.44 3.79 2.37 1.18 M2.5IIIFe-0.5 169 0
104 HD 217357 PM* 23 00 16.1224771183 -22 31 27.651428500 10.494 9.251 7.869 7.014 6.238 K7+Vk 162 0
105 * bet Peg LP* 23 03 46.45746 +28 04 58.0336 6.05 4.09 2.42 0.92 -0.40 M2.5II-III 581 0
106 * phi Aqr SB* 23 14 19.3596471948 -06 02 56.398606998 7.64 5.77 4.22 2.94 1.86 M1.5III 124 0
107 BD+19 5116 ** 23 31 52.17898 +19 56 14.1505 12.737 11.749 10.165 8.982 7.446 M4+M5 428 0
108 Ross 248 BY* 23 41 55.0361186415 +44 10 38.825189497   14.19   11.1   M5.0V 281 0
109 V* BR Psc BY* 23 49 12.5251391270 +02 24 04.403044891 11.532 10.427 8.993 8.029 6.946 dM1 292 0
110 HD 224085 RS* 23 55 04.0516465022 +28 38 01.248194500 8.88 8.20   6.9   K2+IVeFe-1 692 0

    Equat.    Gal    SGal    Ecl

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