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NUMBER: 21547 SUBJECT: LIGO/VIRGO G298045: Magellan Optical Spectrum of the Potential Optical Counterpart Associated with NGC 4993 DATE: 17/08/18 05:46:33 GMT FROM: Ryan Foley at UCSC <foley@ucsc.edu> M. R. Drout, J. D. Simon, B. J. Shappee (Carnegie), K. Boutsia, J. Bravo, G. Prieto (Las Campanas Observatory), D. A. Coulter, R. J. Foley, C. D. Kilpatrick, M. R. Siebert (UCSC), and A. L. Piro (Carnegie) report On 2017 Aug 18.02 UT, we obtained an optical spectrum of the transient source SSS17a (RA = 13:09:48.09 DECL. = -23:22:53.35, Coulter et al. 2017; GCN 21529) possibly associated with LIGO/Virgo G298048, with the LDSS-3 spectrograph on the 6.5m Magellan-Clay telescope at Las Campanas Observatory. The resulting spectrum shows a blue and featureless continuum between 4000 and 10,000 Angstroms, consistent with a power-law. Additional observations are encouraged. -- ThomasKupfer - 18 Aug 2017 |