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2020RNAAS...4..121M - Research Notes of the AAS, 4, 121 (2020/July-0)

Rotational Variability in the TESS Light Curve of 21 Com.

MONIER R. and LAMPENS P.

Abstract (from CDS):

We present an analysis of the TESS-based light curve of the chemically peculiar A-type (Ap) star 21 Com (HD 108945). We used the simple aperture photometry light curve with a time span of 27 days. A least-squares fit to the data with 10 harmonics yields a frequency of 0.48726 day–1, which corresponds to a rotational period of 2.05229 days. Furthermore, we find no evidence of any short-term variability beyond the pure rotational signature.

Abstract Copyright: © 2020. The American Astronomical Society. All rights reserved.

Journal keyword(s): Chemically peculiar stars - Stellar rotation

Simbad objects: 1

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