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2018PASP..130i4204M - Publ. Astron. Soc. Pac., 130, part no 9, 4204-94204 (2018/September-0)

A peculiar interacting be star binary in the Small Magellanic Cloud.

MENNICKENT R.E., RIVINIUS T., CIDALE L., SOSZYNSK I. and FERNANDEZ-TRINCADO J.G.

Abstract (from CDS):

We find that the emission-line object OGLEJ005039.05-725751.4, a member of the cluster OGLE-CL SMC 64, exhibits a peculiar light curve pattern repeating with a recurrence time of 141.45 days. The light curve resembles periodic outbursts with a duty cycle of 20%. A second long cycle of 2500 days is also detected in the photometric data set. Two X-SHOOTER spectra obtained at minimum and maximum reveal a Be star dominating at minimum light resembling the Classical Be star 48 Lib. The larger Hα emission, the stronger Na D absorption and the appearance of emission in the infrared Ca II triplet at maximum, might indicate periodic mass transfer in a complex binary system.

Abstract Copyright: © 2018. The Astronomical Society of the Pacific. All rights reserved.

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2019.11.19-10:25:01

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