2017ApJ...849..120R

Query : 2017ApJ...849..120R

2017ApJ...849..120R - Astrophys. J., 849, 120-120 (2017/November-2)

Contemporaneous imaging comparisons of the spotted giant σ Geminorum using interferometric, spectroscopic, and photometric data.

ROETTENBACHER R.M., MONNIER J.D., KORHONEN H., HARMON R.O., BARON F., HACKMAN T., HENRY G.W., SCHAEFER G.H., STRASSMEIER K.G., WEBER M. and TEN BRUMMELAAR T.A.

Abstract (from CDS):

Nearby active stars with relatively rapid rotation and large starspot structures offer the opportunity to compare interferometric, spectroscopic, and photometric imaging techniques. In this paper, we image a spotted star with three different methods for the first time. The giant primary star of the RS Canum Venaticorum binary σ Geminorum (σ Gem) was imaged for two epochs of interferometric, high-resolution spectroscopic, and photometric observations. The light curves from the reconstructions show good agreement with the observed light curves, supported by the longitudinally consistent spot features on the different maps. However, there is strong disagreement in the spot latitudes across the methods.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): binaries: close - stars: activity - stars: imaging - stars: individual: sigma Geminorum - stars: variables: general - stars: variables: general

Simbad objects: 11

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Number of rows : 11
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 * zet And El* 00 47 20.3257188471 +24 16 01.842781713 6.05 5.18 4.06 3.21 2.62 K1III+KV 299 0
2 * zet Per s*b 03 54 07.9224751 +31 53 01.081262 2.19 2.97 2.85 2.71 2.62 B1Ib 881 0
3 HD 37329 * 05 38 57.3734264688 +26 37 05.052945144 8.170 7.410 6.430     G9III 39 0
4 * tet Gem PM* 06 52 47.3388625619 +33 57 40.524337771 3.84 3.70 3.60 3.50 3.42 A2IV 144 0
5 HD 52711 PM* 07 03 30.4592307736 +29 20 13.493121298 6.57 6.53   5.6   G0V 280 0
6 HD 60318 ** 07 35 08.8032282360 +30 57 39.304643436   6.366 5.347     K0III 128 0
7 * ups Gem PM* 07 35 55.3500141720 +26 53 44.680194960 7.54 5.60 4.06 2.82 1.91 M0III 212 0
8 V* S Gem Mi* 07 43 02.5547544792 +23 26 58.140767004   12.48 8.00 8.61   M6-7e 85 0
9 * sig Gem RS* 07 43 18.7276907303 +28 53 00.631838445 6.38 5.41 4.29 3.37 2.79 K1IIIe 499 0
10 HD 63138 * 07 48 28.8106184712 +28 45 51.277030920   7.86 6.85     K0III 18 0
11 * chi Cnc PM* 08 20 03.8607602556 +27 13 03.738171893   5.61   4.8   F6V 331 0

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