75 citations · 152 across the 5 of their papers we have counts for
5 papers
Physical Conditions and Chemical Abundances of the Variable Planetary Nebula IC 4997
A. Danehkar, M. Parthasarathy
The planetary nebula (PN) IC 4997 is one of a few rapidly evolving objects with variable brightness and nebular emission around a hydrogen-deficient star. In this study, we have de…
A review of type Ia supernova spectra
J. Parrent, B. Friesen, M. Parthasarathy
SN 2011fe was the nearest and best-observed type Ia supernova in a generation, and brought previous incomplete datasets into sharp contrast with the detailed new data. In retrospec…
Weak G-band stars on the H-R Diagram: Clues to the origin of Li anomaly
A. Palacios, M. Parthasarathy, Y. Bharat Kumar +1
Weak G-band (WGB) stars are a rare class of cool luminous stars that present a strong depletion in carbon, but also lithium abundance anomalies that have been little explored in th…
Progenitors of Type Ia Supernovae: Binary Stars with White Dwarf Companions
M. Parthasarathy, David Branch, David J. Jeffery +1
Type Ia SNe (SNe Ia) are thought to come from carbon-oxygen white dwarfs that accrete mass from binary companions until they approach the Chandrasekhar limit, ignite carbon, and un…
On the Progenitor of Supernova 1987A
M. Parthasarathy, David Branch, E. Baron +1
A previously unpublished ultralow-dispersion spectrum of Sanduleak -69 202, the stellar progenitor of SN 1987A, is presented and the uncertain presupernova evolution of Sanduleak -…