Abstract Details
| Name: Amar Aryan Affiliation: ARIES, Nainital Conference ID: ASI2019_254 Title : Photometric and Spectroscopic study of Type I Supernovae. Authors and Co-Authors : Amar Aryan, Amit Kumar, Rahul Gupta Abstract Type : Poster Abstract Category : Extragalactic Astronomy Abstract : Supernovae are transient astrophysical phenomenon that occur during last stages of stellar evolution,whose destruction is marked by one final,massive explosion. Out of various types of supernovae(SNe), type I are those which do not show Hydrogen lines in their spectra. In type I, type Ia are those which do not show Helium lines but have a characteristic Silicon absorption features, type Ib have unambiguous signature of Helium in their spectra, type Ic have no Hydrogen or Helium features but both, type Ib and type Ic show strong features of Oxygen, Magnesium and Calcium in their spectra.Type Ia SNe are important distance indicators, element factories, cosmic ray accelerator, kinetic energy(K.E) source in galaxy evolution and endpoints of stellar binary evolution.The early time flux decay of these SNe at Optical and NIR frequencies are very important to understand the underlying physical mechanism behind these energetic explosions. The very early time optical observations are helpful to understand the shock-break out phase. Observed peak and the temporal decay nature of these SNe at optical frequencies tell about peak luminosity, ejected Nickel (Ni) mass and the K.E of the explosion.The multi -band temporal and spectral monitoring of these SNe also provide information about underlying extinction thus reveals the ambient environment of the progenitors. |