skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Type Ia Supernova Hubble Residuals and Host-Galaxy Properties

Abstract

Kim et al. (2013) [K13] introduced a new methodology for determining peak- brightness absolute magnitudes of type Ia supernovae from multi-band light curves. We examine the relation between their parameterization of light curves and Hubble residuals, based on photometry synthesized from the Nearby Supernova Factory spec- trophotometric time series, with global host-galaxy properties. The K13 Hubble residual step with host mass is 0.013 ? 0.031 mag for a supernova subsample with data coverage corresponding to the K13 training; at ? 1?, the step is not significant and lower than previous measurements. Relaxing the data coverage requirement the Hubble residual step with host mass is 0.045 ? 0.026 mag for the larger sample; a calculation using the modes of the distributions, less sensitive to outliers, yields a step of 0.019 mag. The analysis of this article uses K13 inferred luminosities, as distinguished from previous works that use magnitude corrections as a function of SALT2 color and stretch param- eters: Steps at> 2? significance are found in SALT2 Hubble residuals in samples split by the values of their K13 x(1) and x(2) light-curve parameters. x(1) affects the light- curve width and color around peak (similar to the∆m15 and stretch parameters), and x(2)more » affects colors, the near-UV light-curve width, and the light-curve decline 20 to 30 days after peak brightness. The novel light-curve analysis, increased parameter set, and magnitude corrections of K13 may be capturing features of SN Ia diversity arising from progenitor stellar evolution.« less

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; more »; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; « less
Publication Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
Physics Division
OSTI Identifier:
1127144
Report Number(s):
LBNL-6559E
DOE Contract Number:  
DE-AC02-05CH11231
Resource Type:
Journal Article
Journal Name:
Astrophysical Journal
Additional Journal Information:
Journal Name: Astrophysical Journal
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; distance scale, supernovae: general

Citation Formats

Factory, Nearby Supernova, Kim, A. G., 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., Feindt, U., Fleury, M., Gangler, E., Greskovic, P., Guy, J., Kowalski, M., Lombardo, S., Nordin, J., Nugent, P., Pain, R., Pecontal, E., Pereira, R., Perlmutter, S., Rabinowitz, D., Rigault, M., Runge, K., Saunders, C., Scalzo, R., Smadja, G., Tao, C., Thomas, R. C., and Weaver, B. A. Type Ia Supernova Hubble Residuals and Host-Galaxy Properties. United States: N. p., 2014. Web.
Factory, Nearby Supernova, Kim, A. G., 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., Feindt, U., Fleury, M., Gangler, E., Greskovic, P., Guy, J., Kowalski, M., Lombardo, S., Nordin, J., Nugent, P., Pain, R., Pecontal, E., Pereira, R., Perlmutter, S., Rabinowitz, D., Rigault, M., Runge, K., Saunders, C., Scalzo, R., Smadja, G., Tao, C., Thomas, R. C., & Weaver, B. A. Type Ia Supernova Hubble Residuals and Host-Galaxy Properties. United States.
Factory, Nearby Supernova, Kim, A. G., 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., Feindt, U., Fleury, M., Gangler, E., Greskovic, P., Guy, J., Kowalski, M., Lombardo, S., Nordin, J., Nugent, P., Pain, R., Pecontal, E., Pereira, R., Perlmutter, S., Rabinowitz, D., Rigault, M., Runge, K., Saunders, C., Scalzo, R., Smadja, G., Tao, C., Thomas, R. C., and Weaver, B. A. 2014. "Type Ia Supernova Hubble Residuals and Host-Galaxy Properties". United States. https://www.osti.gov/servlets/purl/1127144.
@article{osti_1127144,
title = {Type Ia Supernova Hubble Residuals and Host-Galaxy Properties},
author = {Factory, Nearby Supernova and Kim, A. G. and Aldering, G. and Antilogus, P. and Aragon, C. and Bailey, S. and Baltay, C. and Bongard, S. and Buton, C. and Canto, A. and Cellier-Holzem, F. and Childress, M. and Chotard, N. and Copin, Y. and Fakhouri, H. K. and Feindt, U. and Fleury, M. and Gangler, E. and Greskovic, P. and Guy, J. and Kowalski, M. and Lombardo, S. and Nordin, J. and Nugent, P. and Pain, R. and Pecontal, E. and Pereira, R. and Perlmutter, S. and Rabinowitz, D. and Rigault, M. and Runge, K. and Saunders, C. and Scalzo, R. and Smadja, G. and Tao, C. and Thomas, R. C. and Weaver, B. A.},
abstractNote = {Kim et al. (2013) [K13] introduced a new methodology for determining peak- brightness absolute magnitudes of type Ia supernovae from multi-band light curves. We examine the relation between their parameterization of light curves and Hubble residuals, based on photometry synthesized from the Nearby Supernova Factory spec- trophotometric time series, with global host-galaxy properties. The K13 Hubble residual step with host mass is 0.013 ? 0.031 mag for a supernova subsample with data coverage corresponding to the K13 training; at ? 1?, the step is not significant and lower than previous measurements. Relaxing the data coverage requirement the Hubble residual step with host mass is 0.045 ? 0.026 mag for the larger sample; a calculation using the modes of the distributions, less sensitive to outliers, yields a step of 0.019 mag. The analysis of this article uses K13 inferred luminosities, as distinguished from previous works that use magnitude corrections as a function of SALT2 color and stretch param- eters: Steps at> 2? significance are found in SALT2 Hubble residuals in samples split by the values of their K13 x(1) and x(2) light-curve parameters. x(1) affects the light- curve width and color around peak (similar to the∆m15 and stretch parameters), and x(2) affects colors, the near-UV light-curve width, and the light-curve decline 20 to 30 days after peak brightness. The novel light-curve analysis, increased parameter set, and magnitude corrections of K13 may be capturing features of SN Ia diversity arising from progenitor stellar evolution.},
doi = {},
url = {https://www.osti.gov/biblio/1127144}, journal = {Astrophysical Journal},
number = ,
volume = ,
place = {United States},
year = {Fri Jan 17 00:00:00 EST 2014},
month = {Fri Jan 17 00:00:00 EST 2014}
}