ATLAS discoveries of optical transients
ATel #9527; 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 21 Sep 2016; 21:39 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
- | ATLAS16ctz | 18:53:07.93 | +06:44:08.9 | 57638.31 | 20160907.31 | 15.81 c | | 1.
AT2016gjr | ATLAS16cuj | 20:37:01.95 | +06:24:04.8 | 57650.35 | 20160919.35 | 17.67 o | | 2.
AT2016gjq | ATLAS16cvj | 19:33:59.21 | -13:44:05.0 | 57651.31 | 20160920.31 | 17.69 o | | 3.
AT2016gkk | ATLAS16cvq | 18:59:48.77 | +45:01:29.3 | 57652.30 | 20160921.30 | 17.90 o | | 4.
AT2016gkj | ATLAS16cvn | 19:11:27.86 | +55:48:10.6 | 57652.30 | 20160921.30 | 16.70 o | | 5.
AT2016gkl | ATLAS16cwk | 21:22:04.33 | +36:45:21.1 | 57652.37 | 20160921.37 | 17.97 o | | 6.
1. No object visible in the PS1 stack. In the galactic plane (b=2.69) and thus probably a high amplitude galactic variable.
2. A faint object (r=21.9) is visible in the PS1 stack.
3. A faint object (r=21.7) is visible in the PS1 stack.
4. The object is 1.48 arcsec from an i=18.9 mag galaxy in the PS1 stack.
5. Hostless; nothing visible in the PS1 stack.
6. The object is coincident with an r=18.98 mag source in the PS1 all sky catalog, hence is probably a stellar variable.
