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Spectroscopic Classifications of Optical Transients with SOAR

ATel #9277; Y.-C. Pan, J. A. Miller (Illinois), M. R. Siebert, R. J. Foley (UCSC), S. W. Jha (Rutgers), A. Rest (STScI), D. Scolnic (Chicago/KICP), K. W. Smith, D. Wright, S. J. Smartt (QUB), M. Huber, K. C. Chambers, H. Flewelling, M. Willman, N. Primak, A. Schultz, B. Gibson, E. Magnier, C. Waters, J. Tonry, R. J. Wainscoat (IfA, Hawaii)
on 28 Jul 2016; 21:28 UT
Credential Certification: Yen-Chen Pan (ycpan@illinois.edu)

Subjects: Optical, Supernovae, Variables

We report the following classifications of optical transients from spectroscopic observations with the Goodman spectrograph on the Southern Astrophysical Research (SOAR) telescope. Targets were supplied by the PSST and GAIA. All observations were made on 2016 July 28 UT. Classifications were performed with SNID (Blondin & Tonry, 2007, ApJ, 666, 1024).

 
Name | RA (J2000) | Dec (J2000) | z | Type | Phase   |  Notes
Gaia16avw | 16:52:54.20 | -42:17:47.90 | 0.0 | star | | (1) PS16dcy | 22:14:00.52 | -26:59:11.60 | 0.090 | SNIa | +6 days | (2) PS16dgy | 22:23:50.16 | -17:48:37.80 | 0.092 | SNIa | +4 days | (3) PS16ddb | 22:53:15.15 | -22:08:38.40 | 0.045 | SNIa | +30 days | Gaia16awf | 03:07:53.5 | -69:01:47.20 | 0.036 | SNIa | -8 days | (4) Gaia16awd | 03:16:39.6 | -40:15:16.40 | 0.09 | SNIa | +5 days | (5)

Notes: When the redshift is given to 2 decimal places, it is derived from the SN spectrum. Otherwise, the redshift is determined from the host galaxy. (1) Strong H-alpha emission line found in the stellar spectrum. (2) We measure a Si II 6355 velocity of -10,900 km/s. (3) We measure a Si II 6355 velocity of -10,000 km/s. (4) We measure a Si II 6355 velocity of -12,600 km/s. (5) There are also several good matches to high-luminosity SN 2006gz.