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http://hdl.handle.net/20.500.12386/24926
Titolo: | The Kepler and Hale observations of V523 Lyr | Autori: | MASON, Elena S. B. Howell |
Data pubblicazione: | 2016 | Rivista: | ASTRONOMY & ASTROPHYSICS | Numero: | 589 | Da pagina:: | A106 | Abstract: | We present new observations of the cataclysmic variable V523 Lyr, a member of the open cluster NGC 6791. The Kepler Space telescope obtained photometric observations of this source and we examine the nearly 3 year long light curve. The observations show numerous small amplitude outbursts recurring on average every 33 days, intermittent quasi-periodic oscillations, and a significant fully coherent period of ~3.8 hr which we identify as the orbital period of the binary. Contemporaneous optical spectroscopy of V523 Lyr reveals a faint blue source with broad Balmer absorption lines containing narrow emission cores. H$\alpha$ is in emission above the continuum. The low amplitude of the photometric signal and no detected velocity motion suggest a low orbital inclination. We discuss the properties of V523 Lyr and show that it is a member of the growing group of anomalous Z Cam type CVs, systems which show stunted outbursts, light curve standstills, and occasional deep drops in brightness. | URI: | http://hdl.handle.net/20.500.12386/24926 | URL: | http://arxiv.org/abs/1603.01410v1 https://www.aanda.org/articles/aa/abs/2016/05/aa28245-16/aa28245-16.html |
ISSN: | 0004-6361 | DOI: | 10.1051/0004-6361/201628245 | Fulltext: | open |
È visualizzato nelle collezioni: | 1.01 Articoli in rivista |
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