A Peculiar Interacting Be Star Binary in the Small Magellanic Cloud
| Affiliation auteurs | !!!! Error affiliation !!!! |
| Titre | A Peculiar Interacting Be Star Binary in the Small Magellanic Cloud |
| Type de publication | Journal Article |
| Year of Publication | 2018 |
| Auteurs | Mennickent RE, Rivinius T, Cidale L, Soszynsk I, Fernandez-Trincado J.G |
| Journal | PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC |
| Volume | 130 |
| Pagination | 094204 |
| Date Published | SEP |
| Type of Article | Article |
| ISSN | 0004-6280 |
| Mots-clés | (stars:) binaries (including multiple): close, (stars:) binaries: spectroscopic, (stars:) circumstellar matter, Be, stars: emission-line, stars: evolution, stars: variables: general |
| Résumé | 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 H alpha 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. |
| DOI | 10.1088/1538-3873/aaca88 |