[vsnet-alert 17735] ASASSN-14hi, ASASSN-14hj, ASASSN-14hk (ATEL)

Taichi Kato tkato at kusastro.kyoto-u.ac.jp
Wed Sep 17 15:39:08 JST 2014


ASASSN-14hi, ASASSN-14hj, ASASSN-14hk (ATEL)

   All objects are WZ Sge-type candidates.

ASASSN-14hi 	--- 	------- 	18:57:46.67 	57:27:14.7 	2014-09-16.3 	15.18 	SDSS 	DSS 	VIZIER 	------- 	high amplitude CV candidate caught early, no match in Vizier, V>17.5 on 2014-09-14.30, V=15.2 on 2014-09-16.30

ASASSN-14hi 20140914.30 <175V ASN
ASASSN-14hi 20140916.30 15.18V ASN

ASASSN-14hj 	--- 	------- 	21:16:35.73 	-7:49:10.6 	2014-09-16.11 	14.55 	SDSS 	DSS 	VIZIER 	------- 	bright, large amplitude CV candidate caught very early in two cameras, matches to g=22.4 blue SDSS source, V>17.2 on 2014-09-15.36, V=14.6 on 2014-09-16.11, V=14.4 on 2014-09-16.34

ASASSN-14hj 20140915.36 <172V ASN
ASASSN-14hj 20140916.11 14.55V ASN
ASASSN-14hj 20140916.34 144V ASN

ASASSN-14hk 	--- 	------- 	1:39:35.67 	35:38:40.7 	2014-09-16.6 	14.61 	SDSS 	DSS 	VIZIER 	------- 	discovered in images taken on UT 2014-09-16.61 at V=14.7, but not present (V>16.7) in images taken on UT 2014-09-14.43; Vizier reports a match to a faint, B=20.8 USNO-B1.0 source, and also a nearby GALEX NUV=21.9 source

ASASSN-14hk 20140914.43 <167V ASN
ASASSN-14hk 20140916.61 14.61V ASN

==============================================================================
ATEL #6479							     ATEL #6479

Title:	ASAS-SN Discovery of Three Bright, Large Amplitude CV Outbursts
		Caught Early
Author:	K. Z. Stanek, C. S. Kochanek, A. B. Davis, T. W.-S. Holoien,
		U. Basu, J. F. Beacom (Ohio State), B. J. Shappee (Hubble Fellow,
		Carnegie Observatories), J. L. Prieto (Diego Portales; MAS), D. Bersier
		(LJMU), J. Brimacombe (Coral Towers Observatory), D. Szczygiel, G.
		Pojmanski (Warsaw University Observatory) 
Queries:	stanek.32 at osu.edu
Posted:	16 Sep 2014; 18:26 UT
Subjects:Optical, Cataclysmic Variable

During the ongoing All Sky Automated Survey for SuperNovae (ASAS-SN or

"Assassin"), using data from both the quadruple 14-cm "Brutus" 
telescope in Haleakala, Hawaii and the double 14-cm "Cassius" 
telescope in Cerro Tololo, Chile, we discovered three new bright  
transient sources  

Object        RA (J2000)    DEC (J2000)     Disc. UT Date   Disc. V mag

ASASSN-14hi   18:57:46.67   +57:27:14.7     2014-09-16.30    15.2 
ASASSN-14hj   21:16:35.73   -07:49:10.6     2014-09-16.11    14.5 
ASASSN-14hk   01:39:35.68   +35:38:40.8     2014-09-16.60    14.7 

ASASSN-14hi was discovered at V=15.2 in "Brutus" images taken on 
2014-09-16.30, but not present (V>17.5) in images taken on 
2014-09-14.30. There is no matching source at Vizier at this 
position.

ASASSN-14hj was discovered at V=14.6 in "Cassius" images taken on 
2014-09-16.11 and at V=14.4 in "Brutus" data taken on 2014-09-16.34, 
but not present (V>17.2) in "Brutus" images taken on 2014-09-15.36.  
There is a faint (g=22.4), blue SDDS object at this 
position, which, while classified as a galaxy, is most likely 
the cataclysmic variable in quiescence.

ASASSN-14hk was discovered in "Brutus" images taken on UT 
2014-09-16.61 at V=14.7, but not present (V>16.7) in images taken on 
UT 2014-09-14.43. At the position of the transient Vizier reports 
a match to a faint, B=20.8 USNO-B1.0 source, and also a nearby 
GALEX NUV=21.9 source.

Given large amplitude of their outbursts, all three transients may 
be WZ Sge-type dwarf novae, caught early. Follow-up observations are 
encouraged.

We thank LCOGT and its staff for their continued support of 
ASAS-SN. For more information about the ASAS-SN project, see the <a 
href=http://www.astronomy.ohio-state.edu/~assassin/index.shtml>ASAS-SN

Homepage</a> and the list of all <a 
href=http://www.astronomy.ohio-state.edu/~assassin/transients.html>ASAS-SN

transients.</a>


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