ASAS-SN Discovery of Three Bright CVs

ATel #5118; K. Z. Stanek, B. J. Shappee, C. S. Kochanek, J. Jencson, A. Talabere, J. F. Beacom (Ohio State), J. L. Prieto (Princeton), D. Szczygiel, G. Pojmanski (Warsaw University Observatory), M. Dubberley, M. Elphick, S. Foale, E. Hawkins, D. Mullens, W. Rosing, R. Ross, Z. Walker (Las Cumbres Observatory)
on 10 Jun 2013; 15:43 UT
Distributed as an Instant Email Notice Transients
Credential Certification: Krzysztof Stanek (stanek.32@osu.edu)

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During the ongoing All Sky Automated Survey for SuperNovae (ASAS-SN or "Assassin"; ATel #4987, #4999, #5010, #5052, #5082, #5102), using data from the double 14-cm "Brutus" telescope in Haleakala, Hawaii, we discovered three new transients:

  
Object       RA (J2000)   DEC (J2000)    Disc. UT Date     Approx. Disc. V mag  
ASASSN-13ao  12:43:12.05 +43:31:59.9     2013 June 8.28       15.1  
ASASSN-13ap  13:56:42.41 +61:30:23.9     2013 June 8.34       16.3 
ASASSN-13aq  15:57:59.37 -04:24:15.6     2013 June 9.38       15.7  

ASASSN-13ao was present in images obtained 2013 UT June 08.28 but undetected (V > 17) on 2013 UT May 31. Vizier reveals an optical source with B = 20.5 detected 0.3" from our ASAS-SN position in the USNO-B1 catalog. There is also a 0.4" SDSS match with a blue, g=21.2 star. ASASSN-13ao is most likely a CV in a strong outburst.

ASASSN-13ap was present in images obtained 2013 UT June 08.34 but undetected (V > 17) on 2013 UT May 24. Vizier reveals an optical source with B = 21.2 detected 0.8" from our ASAS-SN position in the USNO-B1 catalog. There is also a 0.5" SDSS match with a blue, g=21.1 star. ASASSN-13ao is most likely a CV in outburst.

ASASSN-13aq was present in images obtained 2013 UT June 05.40 and June 09.38 but undetected (V > 17) on 2013 UT May 31. Vizier reveals an optical source with B = 21.0 detected 1.5" from our ASAS-SN position in the USNO-B1 catalog. ASASSN-13aq is most likely a CV in outburst.