Sign on

SAO/NASA ADS Astronomy Abstract Service

· Find Similar Abstracts (with default settings below)
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
Direct Analysis of Type Ia Supernovae Observed by The Nearby Supernova Factory
Authors:
Thomas, Rollin; Aldering, G.; Antilogus, P.; Aragon, C.; Bailey, S.; Baltay, C.; Bongard, S.; Buton, C.; Childress, M.; Copin, Y.; Gangler, E.; Jerke, J.; Loken, S.; Nugent, P.; Pain, R.; Pecontal, E.; Pereira, R.; Perlmutter, S.; Rabinowitz, D.; Rigaudier, G.; Ripoche, P.; Runge, K.; Scalzo, R.; Smadja, G.; Swift, H.; Tao, C.; Wu, C.
Affiliation:
AA(LBNL), AB(LBNL), AC(LPNHE, France), AD(LBNL), AE(LPNHE, France), AF(Yale), AG(LBNL), AH(IPNL, France), AI(LBNL), AJ(IPNL, France), AK(IPNL, France), AL(Yale), AM(LBNL), AN(LBNL), AO(LPNHE, France), AP(CRAL, France), AQ(LPNHE, France), AR(LBNL), AS(Yale), AT(CRAL, France), AU(LPNHE, France), AV(LBNL), AW(Yale), AX(IPNL, France), AY(LBNL), AZ(IPNL, France), BA(LPNHE, France)
Publication:
American Astronomical Society, AAS Meeting #213, #489.02; Bulletin of the American Astronomical Society, Vol. 41, p.464
Publication Date:
01/2009
Origin:
AAS
Bibliographic Code:
2009AAS...21348902T

Abstract

Over the past four years, the Nearby Supernova Factory (SNfactory) has obtained hundreds of time-series spectra of Type Ia supernovae (SNe Ia) using its SuperNova Integral Field Spectrograph (SNIFS). This dataset is a promising resource for improving our understanding of SN Ia explosion physics and progenitor models --- key issues that, if resolved, could further improve the utility of and confidence in SNe Ia as reliable cosmological distance indicators. Using a new, automated direct analysis code we have developed (SYNAPPS), we have commenced a systematic study of the SNfactory spectroscopic data set. SYNAPPS solves for a highly parameterized synthetic spectrum consistent with the observed spectrum, enabling line identification and ejecta velocity measurements, while treating line-blending explicitly. These results provide important constraints on stellar explosion models. We present preliminary results including, for example, an investigation of some early-phase spectra, and examine trends in spectral behavior noted previously by others. We also address future directions for code development to bring about a deeper physics analysis of the data.
Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)
   

Find Similar Abstracts:

Use: Authors
Title
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints