Discovery of 10 ASAS-SN Supernova Candidates

ATel #15167; J. Brimacombe (Coral Towers Observatory), J. M. Fernandez (Observatory Inmaculada del Molino), G. George (MGA/WWVSH), P. Vallely, K. Z. Stanek, C. S. Kochanek, C. Christy, M. Rizzo Smith, S. Bose, 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 (KIAA-PKU), M. Stritzinger (Aarhus), P. Pearl (The Gap Observatory, BOSS)
on 18 Jan 2022; 18:07 UT
Credential Certification: Patrick Vallely (vallely.7@osu.edu)

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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, the quadruple 14-cm "Payne-Gaposchkin" telescope in Sutherland, South Africa, 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. g mag    Approx. Abs. Mag   Offset from Host (") 
ASASSN-22ar (AT 2022mx)   10:28:06.281   -09:46:45.33   0.089417     2022-01-09.52       ~17.5          -20.7               0.3 
ASASSN-22am (AT 2022fw)   12:23:54.051   -03:26:37.55   0.006686     2022-01-09.41       ~16.9          -15.8               3.13 
ASASSN-22aj (AT 2022ea)   13:52:41.109   +59:09:30.15   0.032027     2022-01-07.54       ~17.5          -18.2               0.32 
ASASSN-22ai (AT 2022dy)   01:51:33.241   +30:40:46.62   0.046283     2022-01-07.25       ~17.5          -19.1               5.61 
ASASSN-22ah (AT 2022dh)   01:52:07.739   -16:55:31.09   Unk          2022-01-05.16       ~17.6           ---                0.85 
ASASSN-22ag (AT 2022bw)   22:50:13.406   -44:19:27.30   0.032943     2022-01-06.06       ~16.5          -19.2               8.25 
ASASSN-22af (AT 2022bo)   04:15:15.799   -50:47:24.84   0.057083     2022-01-02.09       ~18.0          -19.0               10.56 
ASASSN-22ac (AT 2022an)   12:43:32.290   -41:21:57.84   0.007397     2022-01-04.26       ~16.5          -16.8               17.82 
ASASSN-22aa (AT 2022t)    02:21:09.392   -31:52:38.23   0.035900     2022-01-03.18       ~17.2          -18.7               0.32 
ASASSN-21wm (AT 2021ahot) 16:26:36.702   +39:51:31.06   0.031358     2021-12-30.52       ~17.2          -18.4               0.61 

Follow-up observations are encouraged.

While we are participating in the TNS system to minimize potential confusion, ASAS-SN will continue using ASASSN-22xx transient names as our primary nomenclature (including supernovae, but also other classes of transients), and we encourage others to do the same. We prefer merging the names as ASASSN-22xx (AT 2022xyz) to preserve, rather than anonymize, the origin of the transient.

We would like to 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 grants GBMF5490 and GBMF10501, and also funded in part by the Alfred P. Sloan Foundation grant G-2021-14192. For more information about the ASAS-SN project, see the ASAS-SN Homepage and the list of all ASAS-SN transients.