Publications (40)
Circumstellar dust shells of hot post-AGB stars
G. Sarkar Nee Gauba, M. Parthasarathy
Using a radiative transfer code (DUSTY) parameters of the circumstellar dust shells of 15 hot post-AGB stars have been derived. Combining the optical, near and far-infrared (ISO, I…
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…
An Excess of Mid-Infrared Emission from the Type Iax SN 2014dt
Ori D. Fox, Joel Johansson, Mansi Kasliwal +12
Supernovae Type Iax (SNe Iax) are less energetic and less luminous than typical thermonuclear explosions. A suggested explanation for the observed characteristics of this subclass…
Photometry and low resolution spectroscopy of hot post-AGB candidates
G. Gauba, M. Parthasarathy, Brijesh Kumar +2
We have obtained Johnson U, B, V and Cousins R, I photometry and low resolution spectra of a small sample of hot post-AGB candidates. Using the present data in combination with JHK…
Physical properties of the very young PN Hen3-1357 (Stingray Nebula) based on multiwavelength observations
Masaaki Otsuka, M. Parthasarathy, A. Tajitsu +1
We have carried out a detailed analysis of the interesting and important very young planetary nebula (PN) Hen3-1357 (Stingray Nebula) based on a unique dataset of optical to far-IR…
Analysis of absorption lines in the high resolution spectra of five hot post-AGB candidates
A. Herrero, M. Parthasarathy, S. Simon-Diaz +3
From an analysis of absorption lines in the high resolution spectra we have derived the radial velocities, stellar parameters (Teff, gravity, wind-strength parameter logQ and proje…