Two New Calcium-rich Gap Transients in Group and Cluster Environments
Two New Calcium-rich Gap Transients in Group and Cluster Environments
We present the Palomar Transient Factory discoveries and the photometric and spectroscopic observations of PTF11kmb and PTF12bho. We show that both transients have properties consistent with the class of calcium-rich gap transients, specifically lower peak luminosities and rapid evolution compared to ordinary supernovae, and a nebular spectrum dominated by [Ca …