2004AJ....128.1802O


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.31CET11:04:53

2004AJ....128.1802O - Astron. J., 128, 1802-1811 (2004/October-0)

Further results of TiO-band observations of starspots.

O'NEAL D., NEFF J.E., SAAR S.H. and CUNTZ M.

Abstract (from CDS):

We present measurements of starspot parameters (temperature and filling factor) on five highly active stars, using absorption bands of TiO, from observations made between 1998 March and 2001 December. We determined starspot parameters by fitting TiO bands using spectra of inactive G and K stars as proxies for the unspotted photospheres of the active stars and spectra of M stars as proxies for the spots. For three evolved RS CVn systems, we find spot filling factors between 0.28 and 0.42 for DM UMa, 0.22 and 0.40 for IN Vir, and 0.31 and 0.35 for XX Tri; these values are similar to those found by other investigators using photometry and Doppler imaging. Among active dwarfs, we measured a lower spot temperature (3350 K) for EQ Vir than found in a previous study of TiO bands, and for EK Dra a lower spot temperature (∼3800 K) than found through photometry. For all active stars but XX Tri, we achieved good phase coverage through a stellar rotational period. We also present our final, extensive grid of spot and nonspot proxy stars.

Abstract Copyright:

Journal keyword(s): Stars: Activity - Stars: Atmospheres - Stars: Spots - Techniques: Spectroscopic

Simbad objects: 74

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Number of rows : 74

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 HD 1528 PM* 00 19 32.8148957440 -01 15 46.153535505   10.66 9.70     G8/K0(IV) 4 0
2 * 47 Psc LP* 00 28 02.9123161359 +17 53 35.243795107 8.53 6.71 5.06 3.32 1.78 M3III 95 0
3 * tet Cet HB* 01 24 01.4052830 -08 10 59.721253 5.57 4.65 3.59 2.83 2.26 K0IIIb 178 0
4 V* XX Tri RS* 02 03 47.1138016857 +35 35 28.669244792   9.52 8.42     K0III 119 0
5 HD 16160 PM* 02 36 04.9023844802 +06 53 12.431588708   6.81   5.2   K3V 487 1
6 * rho02 Ari LP* 02 55 48.4979998 +18 19 53.902936 8.56 7.44 5.93 3.51 1.34 M6-III: 214 0
7 * del Ari PM* 03 11 37.7646526 +19 43 36.039699 6.26 5.40 4.37 3.60 3.09 G9.5IIIb 173 0
8 * kap01 Cet BY* 03 19 21.6963205 +03 22 12.715139 5.71 5.52 4.85 4.27 3.91 G5V 826 0
9 * tau04 Eri LP* 03 19 31.0022373 -21 45 28.304953 7.13 5.32 3.70 2.12 0.66 M3III-IIIaCa-1 104 0
10 * eps Eri BY* 03 32 55.8449634 -09 27 29.731165 5.19 4.61 3.73 3.00 2.54 K2V 1715 1
11 * omi02 Eri Er* 04 15 16.3197260 -07 39 10.338087 5.69 5.25 4.43 3.74 3.29 K0V 746 0
12 * 54 Eri LP* 04 40 26.5115872790 -19 40 17.372298494 7.80 5.90 4.30 2.81 1.40 M3/4III 67 0
13 HD 32147 PM* 05 00 48.9991346145 -05 45 13.220341956 8.27 7.27 6.21 5.36 4.87 K3+V 417 1
14 * omi Col PM* 05 17 29.0892938 -34 53 42.744408 6.62 5.83 4.83 4.09 3.54 K1IV 78 0
15 HD 36395 PM* 05 31 27.3958475290 -03 40 38.021551815 10.626 9.443 7.968 6.996 5.913 M1.5Ve 432 0
16 V* AK Lep BY* 05 44 26.5368916746 -22 25 18.614358408   7.09 6.15     K3 155 0
17 * del Aur SB* 05 59 31.6184193950 +54 17 05.056666306 5.580 4.730 3.720 2.95 2.45 K0IIIb 180 0
18 * 1 Gem SB* 06 04 07.21544 +23 15 48.0401 5.54 5.02 4.15 3.47 3.02 G5III 198 0
19 V* S Lep LP* 06 05 45.5492216726 -24 11 44.028071527 9.72 8.42 6.82 4.12 1.75 M6+IIIa 99 0
20 * mu. Gem LP* 06 22 57.62686 +22 30 48.8979 6.37 4.51 2.87 1.30 -0.08 M3IIIab 367 1
21 HD 265866 PM* 06 54 48.9577150656 +33 16 05.438570309   11.47   9.650   M3V 183 0
22 HD 53329 PM* 07 06 11.5912228064 +34 28 26.286489458   6.456 5.551     G8IV 45 0
23 BD+05 1668 PM* 07 27 24.49975 +05 13 32.8332 12.558 11.443 9.872 8.699 7.161 M3.5V 343 0
24 * kap Gem ** 07 44 26.8535692 +24 23 52.787227 5.19 4.49 3.57 2.86 2.41 G8III-IIIb 286 0
25 V* DU Lyn LP* 07 46 39.2814906790 +37 31 02.631757858 8.70 6.76 5.18     M3III 46 0
26 * chi Gem SB* 08 03 31.0961924098 +27 47 39.703492909   6.075 4.937     K1-IIIb 101 0
27 * bet Cnc PM* 08 16 30.9210081 +09 11 07.957924 6.750 5.000 3.520 2.42 1.62 K4IIIBa0.5: 344 0
28 * sig Hya * 08 38 45.4374649 +03 20 29.170097 6.91 5.63 4.43 3.54 2.98 K1III 132 0
29 * del Cnc ** 08 44 41.0992106 +18 09 15.503395 6.01 5.02 3.94 3.16 2.62 K0+IIIb 190 0
30 * alf Lyn PM* 09 21 03.3007431 +34 23 33.224546 6.63 4.69 3.14 1.91 1.01 K6III 197 0
31 * kap Leo ** 09 24 39.2587397 +26 10 56.364971 7.00 5.69 4.46 3.55 2.92 K2IIIb 134 0
32 HD 82734 * 09 33 12.4599037254 -21 06 56.600257136   6.027 5.003     K0III 87 0
33 * 10 LMi RS* 09 34 13.3814384371 +36 23 51.216307794   5.47 4.60     G7.5IIIb 143 0
34 * mu. UMa SB* 10 22 19.7397659 +41 29 58.269105 6.53 4.64 3.05 1.76 0.80 M0III 293 0
35 BD+01 2447 PM* 10 28 55.5513010331 +00 50 27.601817738 12.389 11.151 9.650 8.617 7.389 dM2 259 0
36 BD+39 2376 ** 10 45 21.4867878709 +38 30 42.303786920   10.72   9.026   K7/M0V 81 0
37 V* DM UMa RS* 10 55 43.5440100939 +60 28 09.722249634   10.31 9.29     K0III-IV 154 0
38 HD 94750 * 10 56 01.9211966646 -24 02 31.302883161   9.16 8.09     K0III 3 0
39 * 58 Leo ** 11 00 33.6475277060 +03 37 02.989587907   6.007 4.838     K0.5IIIFe-0.5 153 0
40 HD 95735 Er* 11 03 20.19400 +35 58 11.5682 10.030 8.960 7.520 5.99 4.79 M2+V 629 0
41 * nu. UMa * 11 18 28.7366424 +33 05 39.510697 6.44 4.89 3.49 2.43 1.73 K3-III: 189 0
42 * 61 UMa PM* 11 41 03.0159358291 +34 12 05.882438337 6.31 6.08 5.34 4.73 4.38 G8V 569 0
43 HD 111631 PM* 12 50 43.5668069413 -00 46 05.267056898 11.187 9.892 8.470 7.59 6.752 M0V 202 0
44 * del Vir RG* 12 55 36.2086058 +03 23 50.893225 6.76 4.97 3.38 1.86 0.53 M3+III 258 0
45 * eps Vir PM* 13 02 10.5978496 +10 57 32.941443 4.45 3.71 2.79 2.16 1.71 G8III-IIIb 518 0
46 * 40 Com LP* 13 06 22.6024454119 +22 36 58.261906251 8.82 7.22 5.61 3.63 1.84 M5III: 103 0
47 V* IN Vir RS* 13 24 24.1562948425 -02 18 54.937752922   10.33 9.131   7.900 K2III 54 0
48 * i Vir PM* 13 26 43.1677950721 -12 42 27.598938373 8.52 6.77 5.25     K5III 72 0
49 * 70 Vir PM* 13 28 25.8081883620 +13 46 43.642951116 5.930 5.680 4.970 4.37 3.98 G4Va 674 1
50 V* R Hya Mi* 13 29 42.7818674 -23 16 52.774679 7.26 6.58 4.97 2.27 -0.15 M6-9e 463 0
51 HD 118100 Er* 13 34 43.2063348511 -08 20 31.335294003 11.578 10.552 9.372 8.602 7.930 K5Ve 325 0
52 * m Vir PM* 13 41 36.7696829398 -08 42 10.733953564 8.59 6.64 5.01     M1+III 105 0
53 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
54 * rho Boo PM* 14 31 49.7896173 +30 22 17.178087 6.33 4.89 3.59 2.67 2.02 K3-III 247 0
55 V* EK Dra BY* 14 39 00.2109485496 +64 17 29.977371998   8.243 7.604     G1.5V 382 0
56 HD 131976 SB* 14 57 26.53330 -21 24 41.5778 10.759 9.559 8.065 7.075 9.02 M1.5V 226 1
57 HD 131977 BY* 14 57 28.0008928545 -21 24 55.726897561 7.89 6.83 5.72 4.74 4.19 K4V 450 0
58 * kap Ser PM* 15 48 44.3767639 +18 08 29.634222 7.66 5.71 4.09 2.84 1.86 M0.5IIIab 114 0
59 * kap CrB PM* 15 51 13.9314685012 +35 39 26.564729663 6.69 5.82 4.82 4.06 3.57 K1IVa 236 1
60 * kap Lyr V* 18 19 51.7090844 +36 03 52.369076 6.70 5.51 4.34 3.48 2.93 K2-IIIabCN0.5 133 0
61 * del02 Lyr LP* 18 54 30.2833502 +36 53 55.013331 7.62 5.97 4.30 2.52 0.89 M4II 221 0
62 * 13 Lyr LP* 18 55 20.1022285 +43 56 45.931489 7.00 5.59 4.00 1.95 0.04 M5III 301 0
63 HD 194013 * 20 23 10.6937478862 +05 20 34.724266275   6.279 5.301     G8III-IV 88 0
64 * 52 Cyg * 20 45 39.7530399 +30 43 10.975578 6.16 5.29 4.23 3.46 2.93 K0IIIa 115 0
65 * gam02 Del PM* 20 46 39.4991856138 +16 07 27.435846946   5.26 4.25 4.1   K1IV 169 0
66 * 61 Cyg A BY* 21 06 53.9396100677 +38 44 57.897024357 7.50 6.39 5.21 4.19 3.54 K5V 951 0
67 * 61 Cyg B Er* 21 06 55.2640651855 +38 44 31.362140913 8.63 7.40 6.03 4.86 3.55 K7V 670 1
68 * 2 Peg * 21 29 56.8954513 +23 38 19.817036   6.088 4.509     M1+III 102 0
69 * bet Lac ** 22 23 33.6237466 +52 13 44.564655 6.26 5.46 4.44 3.67 3.10 G9IIIbCa1 144 0
70 V* IM Peg RS* 22 53 02.2658951462 +16 50 28.291474642   7.024 5.890     K2III 320 1
71 * bet Peg LP* 23 03 46.45746 +28 04 58.0336 6.05 4.09 2.42 0.92 -0.40 M2.5II-III 579 0
72 * lam And RS* 23 37 33.8426114 +46 27 29.337984 5.54 4.84 3.82 3.04 2.47 G8IVk 641 0
73 * gam Cep SB* 23 39 20.9015326708 +77 37 56.505477975 5.190 4.250   2.6   K1III-IVCN1 553 1
74 HD 224085 RS* 23 55 04.0516465022 +28 38 01.248194500 8.88 8.20   6.9   K2+IVeFe-1 685 0

    Equat.    Gal    SGal    Ecl

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2020.10.31-11:04:53

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