Circumstellar Na I and Ca II lines in type IIP supernovae and SN 1998S

Details Circumstellar Na I and Ca II lines in type IIP supernovae and SN 1998S Circumstellar Na I and Ca II lines in type IIP supernovae and SN 1998S

2008-05-21

arxiv.org/abs/0805.3222v1

Astronomy and Astrophysics

Astrophysics

To be published in Astronomy Letters

Scientific paper

10.1134/S1063773708090028

We study a possibility of detection of circumstellar absorption lines of Na I D$_{1,2}$ and Ca II H,K in spectra of type IIP supernovae at the photospheric epoch. The modelling shows that the circumstellar lines of Na I doublet will not be seen in type IIP supernovae for moderate wind density, e.g., characteristic of SN 1999em, whereas rather pronounced Ca II lines with P Cygni profile should be detectable. A similar model is used to describe Na I and Ca II circumstellar lines seen in SN 1998S, type IIL with a dense wind. We show that line intensities in this supernova are reproduced, if one assumes an ultraviolet excess, which is caused primarily by the comptonization of supernova radiation in the shock wave.

Affiliated with

Also associated with

No associations

Rating

Circumstellar Na I and Ca II lines in type IIP supernovae and SN 1998S does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Circumstellar Na I and Ca II lines in type IIP supernovae and SN 1998S, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circumstellar Na I and Ca II lines in type IIP supernovae and SN 1998S will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-289950