A HUBBLE DIAGRAM from TYPE II SUPERNOVAE BASED SOLELY on PHOTOMETRY: The PHOTOMETRIC COLOR METHOD

T. De Jaeger, S. González-Gaitán, J. P. Anderson, L. Galbany, M. Hamuy, M. M. Phillips, M. D. Stritzinger, C. P. Gutiérrez, L. Bolt, C. R. Burns, A. Campillay, S. Castellón, C. Contreras, G. Folatelli, W. L. Freedman, E. Y. Hsiao, K. Krisciunas, W. Krzeminski, H. Kuncarayakti, N. MorrellE. F. Olivares, S. E. Persson, N. Suntzeff

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)

Abstract

We present a Hubble diagram of SNe II using corrected magnitudes derived only from photometry, with no input of spectral information. We use a data set from the Carnegie Supernovae Project I for which optical and near-infrared light curves were obtained. The apparent magnitude is corrected by two observables, one corresponding to the slope of the plateau in the V band and the second a color term. We obtain a dispersion of 0.44 mag using a combination of the (V - i) color and the r band and we are able to reduce the dispersion to 0.39 mag using our golden sample. A comparison of our photometric color method (PCM) with the standardized candle method (SCM) is also performed. The dispersion obtained for the SCM (which uses both photometric and spectroscopic information) is 0.29 mag, which compares with 0.43 mag from the PCM for the same SN sample. The construction of a photometric Hubble diagram is of high importance in the coming era of large photometric wide-field surveys, which will increase the detection rate of supernovae by orders of magnitude. Such numbers will prohibit spectroscopic follow up in the vast majority of cases, and hence methods must be deployed which can proceed using solely photometric data.

Original languageEnglish
Article number121
JournalAstrophysical Journal
Volume815
Issue number2
DOIs
Publication statusPublished - 20 Dec 2015
Externally publishedYes

Keywords

  • distance scale
  • galaxies: distances and redshifts
  • supernovae: general

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Fingerprint

Dive into the research topics of 'A HUBBLE DIAGRAM from TYPE II SUPERNOVAE BASED SOLELY on PHOTOMETRY: The PHOTOMETRIC COLOR METHOD'. Together they form a unique fingerprint.

Cite this