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2023RNAAS...7..147P - Research Notes of the AAS, 7, 147 (2023/July-0)

New Dimming Events in Southern R Coronae Borealis Stars.

PEARCE A., LOVE T., VELEZ P., REICHART D.E., HAISLIP J.B., KOUPRIANOV V.V., BOWERS C. and VERVEER A.

Abstract (from CDS):

This paper reports on photometry of dimming events for three Southern R Coronae Borealis (RCB) stars. Two of these stars have recently entered a dimming phase (IO Nor and V653 Sco), while the other (GU Sgr) is emerging from a dimming event. Low resolution spectra of one of the targets indicates blueshifted Na I D lines, and hydrogen alpha emission. As the number of known RCBs grows, the need to monitor them and detect dimming events at an early stage increases.

Abstract Copyright: © 2023. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): R Coronae Borealis variable stars - Johnson photometry - Spectroscopy

Simbad objects: 3

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