AT2018cow: Continued optical fading and weakening of spectral features
Abstract
We have continued to monitor the evolution of the optical transient AT2018cow/ATLAS18qqn (Smartt et al., ATEL#11727). Low-resolution spectra have been taken each night, using both SPRAT on the Liverpool Telescope (wavelength coverage from 400-800 nm; resolution of 2 nm) and the SED Machine on the Palomar 60-inch telescope (wavelength coverage from 380-920 nm; resolution of 5 nm). We are also monitoring the transient in ugrizH filters nightly at LT. AT2018cow has faded every night since our first observations (ATEL#11732).
- Publication:
-
The Astronomer's Telegram
- Pub Date:
- June 2018
- Bibcode:
- 2018ATel11776....1P
- Keywords:
-
- Gamma-Ray Burst;
- Supernovae;
- Transient