[vsnet-alert 17875] Re: Gaia14aaf = ASASSN-14cn = MASTER OT J161700.81+620024.9: likely eclipsing AM CVn star

[Andrzej Pigulski]

Dear all,

Just one correction: ASASSN-14cn is Gaia14aae, not Gaia14aaf, as 
indicated below.

Best wishes,
Andrzej Pigulski

W dniu 14-10-21 o 00:39, Enrique de Miguel pisze:
> Following the report in ATel #6593 by Rixon et al. on the transient Gaia14aaf (=ASASSN-14cn = MASTER OT J161700.81+620024.9) I performed ~2 hr time-series (unfiltered) photometry on this object using 180 s integrations. The mean brightness is 18.2. The light curve seems to suggest the presence of ~0.7 mag eclipses. The duration of the eclipses is probably about 6 min, but this is uncertain due to the low time resolution of the photometry. A tentative value of the period is 49.7 min, a value to be refined (and confirmed) by subsequent follow-up.
>
>   The short period is consistent with the AM CVn classification reported for this transient in ATel #6593 (see also http://arxiv.org/abs/1307.7396),  as it is its (likely) eclipsing behavior with the double-peaked He emission lines reported in ATel #6593.
>
>
> Enrique de Miguel
> CBA Huelva (Spain)
>