AT2018cow: detection of an underlying broad-line SN Ic
Abstract
We observed ATLAS18qqn/AT2018cow (ATels: #11727, #11729, #11732, #11734, #11736, #11737, #11738, #11740, #11741, #11742, #11743, #11744, #11748, #11749, #11750, #11751, #11752) with OSIRIS/GTC on June 21, 2018 starting at 03:20 UT. Spectra were obtained with the R1000B and R2500I grisms with an exposure time of 2x120s each in each grism, covering the wavelength range between 3700 and 10000 AA. The spectrum is dominated by a power-law continuum (probably due to the tail of the very hot black body mentioned in ATel #11742) with superposed undulations.
- Publication:
-
The Astronomer's Telegram
- Pub Date:
- June 2018
- Bibcode:
- 2018ATel11753....1I
- Keywords:
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- Gamma-Ray Burst;
- Supernovae;
- Transient