A HUBBLE DIAGRAM FROM TYPE II SUPERNOVAE BASED SOLELY ON PHOTOMETRY: THE PHOTOMETRIC COLOR METHOD

Journal Article · Sun Dec 20 00:00:00 EST 2015 · Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/815/2/121· OSTI ID:22521750

De Jaeger, T.; González-Gaitán, S.; Galbany, L.; Hamuy, M.; Gutiérrez, C. P.; Kuncarayakti, H. ^[1]; Anderson, J. P. ^[2]; Phillips, M. M.; Campillay, A.; Castellón, S.; Hsiao, E. Y.; Morrell, N. ^[3]; Stritzinger, M. D.; Contreras, C. ^[4]; Bolt, L. ^[5]; Burns, C. R. ^[6]; Folatelli, G. ^[7]; Freedman, W. L. ^[8]; Krisciunas, K. ^[9]; others, and

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1. Millennium Institute of Astrophysics, Santiago (Chile)
2. European Southern Observatory, Alonso de Córdova 3107, Casilla 19, Santiago (Chile)
3. Las Campanas Observatory, Carnegie Observatories, Casilla 601, La Serena (Chile)
4. Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C (Denmark)
5. Argelander Institut für Astronomie, Universität Bonn, Auf dem Hgel 71, D-53111 Bonn (Germany)
6. Observatories of the Carnegie Institution for Science, Pasadena, CA 91101 (United States)
7. Instituto de Astrofísica de La Plata, CONICET, Paseo del Bosque S/N, B1900FWA, La Plata (Argentina)
8. Department of Astronomy and Astrophysics, University of Chicago, Chicago, IL 60637 (United States)
9. George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy, Department of Physics and Astronomy, Texas A and M University, College Station, TX 77843 (United States)

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.

• OSTI ID: 22521750
• Journal Information: Astrophysical Journal, Vol. 815, Issue 2; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
COLOR
COMPARATIVE EVALUATIONS
DETECTION
DIAGRAMS
DISTANCE
EMISSION SPECTRA
GALAXIES
PHOTOMETRY
RED SHIFT
TYPE II SUPERNOVAE
VISIBLE RADIATION