Sign on

SAO/NASA ADS Astronomy Abstract Service

· Find Similar Abstracts (with default settings below)
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
The Power of Spectrophotometry: K-correction-free Type Ia Supernova Light Curves from the Nearby Supernova Factory
Authors:
Pereira, Rui; 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.; Perlmutter, S.; Rabinowitz, D.; Rigaudier, G.; Ripoche, P.; Runge, K.; Scalzo, R.; Smadja, G.; Swift, H.; Tao, C.; Thomas, R. C.; Wu, C.
Affiliation:
AA(LPNHE, France), AB(LBL), AC(LPNHE, France), AD(LBL), AE(LPNHE, France), AF(Yale), AG(LBL), AH(IPNL, France), AI(LBL), AJ(IPNL, France), AK(IPNL, France), AL(Yale), AM(LBL), AN(LBL), AO(LPNHE, France), AP(CRAL, France), AQ(LBL), AR(Yale), AS(CRAL, France), AT(LPNHE, France), AU(LBL), AV(Yale), AW(IPNL, France), AX(LBL), AY(IPNL, France), AZ(LBL), BA(LPNHE, France)
Publication:
American Astronomical Society, AAS Meeting #213, #489.01; Bulletin of the American Astronomical Society, Vol. 41, p.464
Publication Date:
01/2009
Origin:
AAS
Bibliographic Code:
2009AAS...21348901P

Abstract

Standard Type Ia supernova (SN Ia) photometry light curve fits introduce a convolution of an average ``template'' spectral model, redshifted to observer frame -- a K-correction. Uncertainties in the template, or a mismatch between the template and an observed SN Ia SED introduces errors in the K-correction. Minimizing or eliminating this systematic error is key in the new era of precision SN Ia cosmology.

The Nearby Supernova Factory has collected a dataset of spectrophotometric SN Ia time series, allowing us to recreate rest-frame light curves of each SN, given its host redshift and synthetic filter (and instrument) throughputs. This effectively eliminates the K-correction. The resulting SN Ia light curves produce a smaller dispersion in nearby Hubble diagram residuals when compared to the standard approach. Light curves from synthetic bands centered on particular features or wavelength regions are also investigated, with an emphasis on their utility in photometric subclassification.

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