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Discovery of Eleven ASAS-SN Supernovae

ATel #11103; J. Brimacombe (Coral Towers Observatory), E. Conseil (Association Francaise des Observateurs d'Etoiles Variables), G. Stone (Sierra Remote Observatories), R. A. Koff (Antelope Hills Observatory), P. Vallely, K. Z. Stanek, J. S. Brown, C. S. Kochanek, J. Shields, T. A. Thompson (Ohio State), B. J. Shappee (IfA-Hawaii), T. W.-S. Holoien (Carnegie Observatories), J. L. Prieto (Diego Portales; MAS), D. Bersier (LJMU), Subo Dong, S. Bose, Ping Chen (KIAA-PKU), S. Kiyota (Variable Star Observers League in Japan)
on 29 Dec 2017; 04:09 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Jonathan Brown (brown@astronomy.ohio-state.edu)

Subjects: Optical, Supernovae, Transient

Referred to by ATel #: 11113, 11163

During the ongoing All Sky Automated Survey for SuperNovae (ASAS-SN, Shappee et al. 2014), using data from the quadruple 14-cm "Brutus" telescope in Haleakala, Hawaii, the quadruple 14-cm "Leavitt" telescope in Fort Davis, Texas, and the quadruple 14-cm "Cassius" and "Paczynski" telescopes in Cerro Tololo, Chile, we discovered several new transient sources. Properties of the supernovae, as well as associated finding charts showing the archival imaging (left) and the follow-up confirmation image (right) are included in the table below:

 
Object                     RA (J2000)     DEC (J2000)   Redshift  Disc. UT Date   Disc. V mag  Approx. Abs. Mag   Offset from Host (") 
ASASSN-17qx  (AT 2017iyk)  03:23:28.000   -41:18:19.40   0.07     2017-12-18.10       ~17.9          -19.5             Unk 
ASASSN-17qz  (AT 2017iyw)  08:13:30.627   +71:25:45.13   0.0215   2017-12-18.3        ~15.8          -19.0             4.59 
ASASSN-17rg  (AT 2017jcv)  04:20:40.370   -38:14:46.59   Unk      2017-12-23.15       ~18.1          N/A               1.55 
ASASSN-17rh  (AT 2017jdh)  04:29:23.230   +01:59:51.04   Unk      2017-12-22.27       ~16.9          N/A               Unk 
ASASSN-17ri  (AT 2017jdx)  00:47:56.226   +22:22:23.48   0.019417 2017-12-20.09       ~17.7          -16.9             1.7 
ASASSN-17rj  (AT 2017jdy)  03:49:32.816   -26:52:17.83   Unk      2017-12-24.11       ~18.0          N/A               Unk 
ASASSN-17rk  (AT 2017jdz)  04:24:09.862   -38:57:38.11   Unk      2017-12-23.15       ~18.2          N/A               0.45 
ASASSN-17rl  (AT 2017jea)  07:15:00.042   +46:22:43.79   Unk      2017-12-23.25       ~17.6          N/A               1.97 
ASASSN-17rn  (AT 2017jeg)  08:36:24.641   +26:07:24.65   Unk      2017-12-26.34       ~18.2          N/A               0.14 
ASASSN-17ro  (AT 2017jeh)  07:30:04.070   +54:26:11.20   0.020961 2017-12-26.30       ~17.3          -17.7             7.86 
ASASSN-17rr  (AT 2017jet)  08:37:00.960   +81:41:45.55   0.04     2017-12-26.50       ~16.8          -19.4             0.51 

Follow-up observations are encouraged.

We thank Las Cumbres Observatory and its staff for their continued support of ASAS-SN. ASAS-SN is funded in part by the Gordon and Betty Moore Foundation through grant GBMF5490 to the Ohio State University, NSF grant AST-1515927, the Mt. Cuba Astronomical Foundation, the Center for Cosmology and AstroParticle Physics (CCAPP) at OSU, and the Chinese Academy of Sciences South America Center for Astronomy (CASSACA). For more information about the ASAS-SN project, see the ASAS-SN Homepage and the list of all ASAS-SN transients.