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Title: Type Ia supernova Hubble residuals and host-galaxy properties

Abstract

Kim et al. 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 spectrophotometric 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 <<1σ, the step is not significant and lower than previous measurements. Relaxing the data coverage requirement of the Hubble residual step with the 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 parameters: steps at >2σ 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 Δm {sub 15} and stretch parameters), and x(2) affects colors,more » the near-UV light-curve width, and the light-curve decline 20-30 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:
; ; ; ;  [1]; ; ; ; ; ;  [2];  [3]; ; ; ;  [4];  [5]; ; ;  [6] more »; « less
  1. Physics Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720 (United States)
  2. Laboratoire de Physique Nucléaire et des Hautes Énergies, Université Pierre et Marie Curie Paris 6, Université Paris Diderot Paris 7, CNRS-IN2P3, 4 place Jussieu, F-75252 Paris Cedex 05 (France)
  3. Department of Physics, Yale University, New Haven, CT 06250-8121 (United States)
  4. Physikalisches Institut, Universität Bonn, Nußallee 12, D-53115 Bonn (Germany)
  5. Research School of Astronomy and Astrophysics, Australian National University, Canberra, ACT 2611 (Australia)
  6. Université de Lyon, F-69622 Lyon (France)
Publication Date:
OSTI Identifier:
22351492
Resource Type:
Journal Article
Journal Name:
Astrophysical Journal
Additional Journal Information:
Journal Volume: 784; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0004-637X
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; BRIGHTNESS; CAPTURE; COLOR; CORRECTIONS; DISTANCE; DISTRIBUTION; GALAXIES; LUMINOSITY; MASS; PHOTOMETRY; SPECTROPHOTOMETRY; STAR EVOLUTION; SUPERNOVAE; ULTRAVIOLET RADIATION; VISIBLE RADIATION

Citation Formats

Kim, A. G., Aldering, G., Aragon, C., Bailey, S., Fakhouri, H. K., Antilogus, P., Bongard, S., Canto, A., Cellier-Holzem, F., Fleury, M., Guy, J., Baltay, C., Buton, C., Feindt, U., Greskovic, P., Kowalski, M., Childress, M., Chotard, N., Copin, Y., Gangler, E., Université de Lyon 1, Villeurbanne, CNRS/IN2P3, Institut de Physique Nucléaire de Lyon, and others, and. Type Ia supernova Hubble residuals and host-galaxy properties. United States: N. p., 2014. Web. doi:10.1088/0004-637X/784/1/51.
Kim, A. G., Aldering, G., Aragon, C., Bailey, S., Fakhouri, H. K., Antilogus, P., Bongard, S., Canto, A., Cellier-Holzem, F., Fleury, M., Guy, J., Baltay, C., Buton, C., Feindt, U., Greskovic, P., Kowalski, M., Childress, M., Chotard, N., Copin, Y., Gangler, E., Université de Lyon 1, Villeurbanne, CNRS/IN2P3, Institut de Physique Nucléaire de Lyon, & others, and. Type Ia supernova Hubble residuals and host-galaxy properties. United States. https://doi.org/10.1088/0004-637X/784/1/51
Kim, A. G., Aldering, G., Aragon, C., Bailey, S., Fakhouri, H. K., Antilogus, P., Bongard, S., Canto, A., Cellier-Holzem, F., Fleury, M., Guy, J., Baltay, C., Buton, C., Feindt, U., Greskovic, P., Kowalski, M., Childress, M., Chotard, N., Copin, Y., Gangler, E., Université de Lyon 1, Villeurbanne, CNRS/IN2P3, Institut de Physique Nucléaire de Lyon, and others, and. 2014. "Type Ia supernova Hubble residuals and host-galaxy properties". United States. https://doi.org/10.1088/0004-637X/784/1/51.
@article{osti_22351492,
title = {Type Ia supernova Hubble residuals and host-galaxy properties},
author = {Kim, A. G. and Aldering, G. and Aragon, C. and Bailey, S. and Fakhouri, H. K. and Antilogus, P. and Bongard, S. and Canto, A. and Cellier-Holzem, F. and Fleury, M. and Guy, J. and Baltay, C. and Buton, C. and Feindt, U. and Greskovic, P. and Kowalski, M. and Childress, M. and Chotard, N. and Copin, Y. and Gangler, E. and Université de Lyon 1, Villeurbanne and CNRS/IN2P3, Institut de Physique Nucléaire de Lyon and others, and},
abstractNote = {Kim et al. 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 spectrophotometric 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 <<1σ, the step is not significant and lower than previous measurements. Relaxing the data coverage requirement of the Hubble residual step with the 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 parameters: steps at >2σ 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 Δm {sub 15} and stretch parameters), and x(2) affects colors, the near-UV light-curve width, and the light-curve decline 20-30 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 = {10.1088/0004-637X/784/1/51},
url = {https://www.osti.gov/biblio/22351492}, journal = {Astrophysical Journal},
issn = {0004-637X},
number = 1,
volume = 784,
place = {United States},
year = {Thu Mar 20 00:00:00 EDT 2014},
month = {Thu Mar 20 00:00:00 EDT 2014}
}