2013ApJ...766...84K

Query : 2013ApJ...766...84K

2013ApJ...766...84K - Astrophys. J., 766, 84 (2013/April-1)

Standardizing type Ia supernova absolute magnitudes using gaussian process data regression.

KIM A.G., THOMAS R.C., ALDERING G., ANTILOGUS P., ARAGON C., BAILEY S., BALTAY C., BONGARD S., BUTON C., CANTO A., CELLIER-HOLZEM F., CHILDRESS M., CHOTARD N., COPIN Y., FAKHOURI H.K., GANGLER E., GUY J., KERSCHHAGGL M., KOWALSKI M., NORDIN J., NUGENT P., PAECH K., PAIN R., PECONTAL E., PEREIRA R., PERLMUTTER S., RABINOWITZ D., RIGAULT M., RUNGE K., SAUNDERS C., SCALZO R., SMADJA G., TAO C., WEAVER B.A. and WU C.

Abstract (from CDS):

We present a novel class of models for Type Ia supernova time-evolving spectral energy distributions (SEDs) and absolute magnitudes: they are each modeled as stochastic functions described by Gaussian processes. The values of the SED and absolute magnitudes are defined through well-defined regression prescriptions, so that data directly inform the models. As a proof of concept, we implement a model for synthetic photometry built from the spectrophotometric time series from the Nearby Supernova Factory. Absolute magnitudes at peak B brightness are calibrated to 0.13 mag in the g band and to as low as 0.09 mag in the z = 0.25 blueshifted i band, where the dispersion includes contributions from measurement uncertainties and peculiar velocities. The methodology can be applied to spectrophotometric time series of supernovae that span a range of redshifts to simultaneously standardize supernovae together with fitting cosmological parameters.

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Journal keyword(s): distance scale - methods: data analysis - supernovae: general

Simbad objects: 1

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Number of rows : 1

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2026	#notes
1	SN 2007le	SN*	23 38 48.45	-06 31 21.7			15.2			SNIa	139	1

Query : 2013ApJ...766...84K

Basic data :

SN 2007le -- SuperNova

SN* (2012MNRAS,SN)

23 38 48.45 -06 31 21.7 (Optical) [ ] C 2015ApJS..220....9F

23 36 13.92 -06 47 59.2 [ ]

079.70298 -63.12481 [ ]

V(km/s) 1883 [~] / z(spectroscopic) 0.0063 [~] / cz 1889 [~] (Opt) D 2012MNRAS.425.1789S

SNIa C 2015ApJS..220....9F

V 15.2 [~] D 2008yCat.2283....0B

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SN 2007le

References (139 between 1850 and 2026) (Total 139)
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