Searching for light echoes due to circumstellar matter in SNe Ia spectra

We present an analytical model for light echoes (LEs) coming from circumstellar material (CSM) around Type Ia Supernovae (SNe Ia). Using this model we find two spectral signatures at 4100 Å and 6200 Å that are useful to identify LEs during the Lira law phase (between 35 and 80 days after maximum lig...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Marino, Sebastián, González Gaitán, Santiago, Förster, Francisco, Folatelli, Gastón, Hamuy, Mario, Hsiao, Eric
Formato: Articulo
Lenguaje:Inglés
Publicado: 2015
Materias:
Ciencias Astronómicas
circumstellar matter
galaxies: ISM
supernovae:
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/86151
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-86151
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Astronómicas
circumstellar matter
galaxies: ISM
supernovae:
spellingShingle Ciencias Astronómicas
circumstellar matter
galaxies: ISM
supernovae:
Marino, Sebastián
González Gaitán, Santiago
Förster, Francisco
Folatelli, Gastón
Hamuy, Mario
Hsiao, Eric
Searching for light echoes due to circumstellar matter in SNe Ia spectra
topic_facet Ciencias Astronómicas
circumstellar matter
galaxies: ISM
supernovae:
description We present an analytical model for light echoes (LEs) coming from circumstellar material (CSM) around Type Ia Supernovae (SNe Ia). Using this model we find two spectral signatures at 4100 Å and 6200 Å that are useful to identify LEs during the Lira law phase (between 35 and 80 days after maximum light) coming from nearby CSM at distances of 0.010.25 pc. We analyze a sample of 89 SNe Ia divided into two groups according to their B V decline rate during the Lira law phase, and search for LEs from CSM interaction in the group of SNe with steeper slopes by comparing their spectra with our LE model. We find that a model with LEs + pure extinction from interstellar material (ISM) fits the observed spectra better than a pure ISM extinction model that is constant in time, but we find that a decreasing extinction alone explains the observations better without the need of LEs, possibly implying dust sublimation due to the radiation from the SN.
format Articulo
Articulo
author Marino, Sebastián
González Gaitán, Santiago
Förster, Francisco
Folatelli, Gastón
Hamuy, Mario
Hsiao, Eric
author_facet Marino, Sebastián
González Gaitán, Santiago
Förster, Francisco
Folatelli, Gastón
Hamuy, Mario
Hsiao, Eric
author_sort Marino, Sebastián
title Searching for light echoes due to circumstellar matter in SNe Ia spectra
title_short Searching for light echoes due to circumstellar matter in SNe Ia spectra
title_full Searching for light echoes due to circumstellar matter in SNe Ia spectra
title_fullStr Searching for light echoes due to circumstellar matter in SNe Ia spectra
title_full_unstemmed Searching for light echoes due to circumstellar matter in SNe Ia spectra
title_sort searching for light echoes due to circumstellar matter in sne ia spectra
publishDate 2015
url http://sedici.unlp.edu.ar/handle/10915/86151
work_keys_str_mv AT marinosebastian searchingforlightechoesduetocircumstellarmatterinsneiaspectra
AT gonzalezgaitansantiago searchingforlightechoesduetocircumstellarmatterinsneiaspectra
AT forsterfrancisco searchingforlightechoesduetocircumstellarmatterinsneiaspectra
AT folatelligaston searchingforlightechoesduetocircumstellarmatterinsneiaspectra
AT hamuymario searchingforlightechoesduetocircumstellarmatterinsneiaspectra
AT hsiaoeric searchingforlightechoesduetocircumstellarmatterinsneiaspectra
bdutipo_str Repositorios
_version_ 1764820489364045827

Ejemplares similares