A Type II Supernova Hubble Diagram from the CSP-I, SDSS-II, and SNLS Surveys
The coming era of large photometric wide-field surveys will increase the detection rate of supernovae by orders of magnitude. Such numbers will restrict spectroscopic follow-up in the vast majority of cases, and hence new methods based solely on photometric data must be developed. Here, we construct...
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| Autores principales: | , , , , , , , , , , , , , , , , , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
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2017
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/87279 |
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I19-R120-10915-87279 |
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dspace |
| institution |
Universidad Nacional de La Plata |
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I-19 |
| repository_str |
R-120 |
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SEDICI (UNLP) |
| language |
Inglés |
| topic |
Ciencias Astronómicas galaxies: distances and redshifts supernovae: general words: distance scale |
| spellingShingle |
Ciencias Astronómicas galaxies: distances and redshifts supernovae: general words: distance scale Jaeger, T. de González Gaitán, S. Hamuy, M. Galbany, L. Anderson, J. P. Phillips, M. M. Stritzinger, M. D. Carlberg, R. G. Sullivan, M. Gutiérrez, C. P. Hook, I. M. Howell, D. A. Hsiao, E. Y. Kuncarayakti, H. Ruhlmann Kleider, V. Folatelli, Gastón Pritchet, C. Basa, S. A Type II Supernova Hubble Diagram from the CSP-I, SDSS-II, and SNLS Surveys |
| topic_facet |
Ciencias Astronómicas galaxies: distances and redshifts supernovae: general words: distance scale |
| description |
The coming era of large photometric wide-field surveys will increase the detection rate of supernovae by orders of magnitude. Such numbers will restrict spectroscopic follow-up in the vast majority of cases, and hence new methods based solely on photometric data must be developed. Here, we construct a complete Hubble diagram of Type II supernovae (SNe II) combining data from three different samples: the Carnegie Supernova Project-I, the Sloan Digital Sky Survey II SN, and the Supernova Legacy Survey. Applying the Photometric Color Method (PCM) to 73 SNe II with a redshift range of 0.01-0.5 and with no spectral information, we derive an intrinsic dispersion of 0.35 mag. A comparison with the Standard Candle Method (SCM) using 61 SNe II is also performed and an intrinsic dispersion in the Hubble diagram of 0.27 mag, i.e., 13% in distance uncertainties, is derived. Due to the lack of good statistics at higher redshifts for both methods, only weak constraints on the cosmological parameters are obtained. However, assuming a flat universe and using the PCM, we derive the universes matter density: Ω<sub>m</sub> = 0.32<sup>+0.30</sup><sub>-0.21</sub> providing a new independent evidence for dark energy at the level of two sigma. |
| format |
Articulo Articulo |
| author |
Jaeger, T. de González Gaitán, S. Hamuy, M. Galbany, L. Anderson, J. P. Phillips, M. M. Stritzinger, M. D. Carlberg, R. G. Sullivan, M. Gutiérrez, C. P. Hook, I. M. Howell, D. A. Hsiao, E. Y. Kuncarayakti, H. Ruhlmann Kleider, V. Folatelli, Gastón Pritchet, C. Basa, S. |
| author_facet |
Jaeger, T. de González Gaitán, S. Hamuy, M. Galbany, L. Anderson, J. P. Phillips, M. M. Stritzinger, M. D. Carlberg, R. G. Sullivan, M. Gutiérrez, C. P. Hook, I. M. Howell, D. A. Hsiao, E. Y. Kuncarayakti, H. Ruhlmann Kleider, V. Folatelli, Gastón Pritchet, C. Basa, S. |
| author_sort |
Jaeger, T. de |
| title |
A Type II Supernova Hubble Diagram from the CSP-I, SDSS-II, and SNLS Surveys |
| title_short |
A Type II Supernova Hubble Diagram from the CSP-I, SDSS-II, and SNLS Surveys |
| title_full |
A Type II Supernova Hubble Diagram from the CSP-I, SDSS-II, and SNLS Surveys |
| title_fullStr |
A Type II Supernova Hubble Diagram from the CSP-I, SDSS-II, and SNLS Surveys |
| title_full_unstemmed |
A Type II Supernova Hubble Diagram from the CSP-I, SDSS-II, and SNLS Surveys |
| title_sort |
type ii supernova hubble diagram from the csp-i, sdss-ii, and snls surveys |
| publishDate |
2017 |
| url |
http://sedici.unlp.edu.ar/handle/10915/87279 |
| work_keys_str_mv |
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