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Contemporaneous Imaging Comparisons of the Spotted Giant σ Geminorum Using Interferometric, Spectroscopic, and Photometric Data.
- Source :
- Astrophysical Journal; 11/10/2017, Vol. 849 Issue 2, p1-1, 1p
- Publication Year :
- 2017
-
Abstract
- 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 FROM AUTHOR]
- Subjects :
- GIANT stars
INTERFEROMETRY
ASTRONOMICAL photometry
STARSPOTS
BINARY stars
Subjects
Details
- Language :
- English
- ISSN :
- 0004637X
- Volume :
- 849
- Issue :
- 2
- Database :
- Complementary Index
- Journal :
- Astrophysical Journal
- Publication Type :
- Academic Journal
- Accession number :
- 126167838
- Full Text :
- https://doi.org/10.3847/1538-4357/aa8ef7