[vsnet-alert 17881] Re: ASASSN-14cn = Gaia14aae: eclipsing AM CVn star

[Taichi Kato]

Re: ASASSN-14cn = Gaia14aae: eclipsing AM CVn star

   Congratulations to Enrique!

   This period is the longest known among outbursting
AM CVn-type objects
(see http://adsabs.harvard.edu/doi/10.1093/pasj/psu077 ).
If the white dwarf is eclipsed, we can determine
the binary parameters by using eclipses.
If superhumps are recorded in future observations,
this target will be very important to compare
mass ratios between eclipse modeling and stage A superhump
methods.  Further observations are very desired.
There was one night observation by Kasai-san on June 21
after the detection by ASAS-SN, but the object was
already faint and eclipses escaped detection.

(June outburst)

ASASSN-14cn 20140612.38 <160V ASN
ASASSN-14cn 20140614.38 136V ASN
ASASSN-14cn 20140616.39 143V ASN

   It looks like that the borderline between outbursting
and non-outbursting AM CVn-type objects is longer
than had been supposed.