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ATLAS discoveries of optical transients

ATel #9472; J. Tonry, L. Denneau, B. Stalder, A. Heinze, A. Sherstyuk (IfA, University of Hawaii), A. Rest (STScI), K. W. Smith, S. J. Smartt (Queen's University Belfast)
on 8 Sep 2016; 09:13 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Ken Smith (k.w.smith@qub.ac.uk)

Subjects: Optical, Supernovae, Transient

We report the following transients found by the ATLAS survey (see Tonry et al. ATel #8680). ATLAS is a twin 0.5m telescope system on Haleakala and Mauna Loa. The first unit is operational on Haleakala is robotically surveying the sky. Two filters are used, cyan and orange (denoted c and o, all mags in AB system), more information is on http://www.fallingstar.com. All transients have been registered with the IAU.

Host galaxy identifications and redshifts are from NED or the Pan-STARRS1 3Pi image stack, and absolute magnitude calculations include an estimate of Milky Way foreground extinction at the filter wavelength.

Name      | ATLAS Name | RA (J2000)  | Dec (J2000) | Disc. MJD | Disc. Date  | Disc Mag |    z     | Notes 
AT2016fzs | ATLAS16crj | 16:17:39.89 | +14:17:54.9 | 57637.25  | 20160906.25 |  18.94 c | 0.061072 |   1. 
AT2016fmb | ATLAS16crg | 21:35:25.43 | +21:19:12.9 | 57633.41  | 20160902.41 |  18.50 c |          |   2. 

1. NED reports that the likely host (16.7 arcsec away) is 2MASX J16173918+1418081, with spectroscopic redshift z=0.061072, hence mu=37.11, A_c=0.148, M_c=-18.32.
2. Hostless; nothing visible in the PS1 stack.