SIMBAD references

2020MNRAS.495L.135J - Mon. Not. R. Astron. Soc., 495, L135-L138 (2020)

TESS photometry of extreme helium stars PV Tel and V821 Cen.


Abstract (from CDS):

PV Tel variables are extreme helium (EHe) stars known to be intrinsic light and velocity variable on characteristic time-scales of 0.1-25 d. With two exceptions, they are best described as irregular. Light curves have invariably been obtained from single-site terrestrial observatories. We present Transiting Exoplanet Survey Satellite observations of two bright EHe stars, Popper's star (V821 Cen) and Thackeray's star (PV Tel). PV Tel is variable on time-scales previously reported. V821 Cen is proven to be variable for the first time. Neither light curve shows any evidence of underlying regularity. Implications are considered.

Abstract Copyright: © 2020 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): stars: chemically peculiar - stars: early-type - stars: individual: (PV Tel, V821 Cen) - stars: supergiants - stars: variables: general

Simbad objects: 11

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