[vsnet-alert 2108] Re: Faint object in Triangulum

[Taichi Kato <tkato>]

Re: [vsnet-alert 2104] Faint object in Triangulum

>   During a supernova photographic patrol inside the Abell's Galaxy Cluster
> 262, we found an stellar object in this position:
> 
> Ep. 2000.0   R.A.: 01h 51m 13.3s, DEC: +3606' 00" 
> 
> The photographs are:
> 
> Aug 23.2 UT, 15 min exp, Mv=15.0, Magnitude limit was 15.5
> Aug 27.1 UT, 20 min exp, Mv=13.7, Magnitude limit was 16.0
> Aug 31.1 UT, 13 min exp, Mv=14.0, Magnitude limit was 14.5

  By assuming the mean radial velocity of Abell 262 as 5000 km/s,
expected supernova maxima woul be

  SN Ia:  15.8
  SN II:  17.8

  There is neither IRAS nor RXS counterpart.

  The maximum observed magnitude may therefore suggests a galactic eruptive
object such as a dwarf nova.  Observers are strongly urged to monitor this
object, try to obtain time-resolved photometry and spectroscopy in order to
reveal its nature.

Regards,
Taichi Kato

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