40 pp.
40 pp.
| 260 K 40 pp. | |
| View Document | ||
| Title | The Distant Type Ia Supernova Rate | |
| Author(s) | Pain, R.; Fabbro, S.; Sullivan, M.; Ellis, R. S.; Aldering, G.; Astier, P.; Deustua, S. E.; Fruchter, A. S.; Goldhaber, G.; Goobar, A.; Groom, D. E.; Hardin, D.; Hook, I. M.; Howell, D. A.; Irwin, M. J.; Kim, A. G.; Kim, M. Y.; Knop, R. A.; Lee, J. C.; Perlmutter, S.; Ruiz-Lapuente, P.; Schahmaneche, K.; Schaefer, B.; Walton, N. A. | |
| Publication Date | May 28, 2002 | |
| Report Number | LBNL--47887 | |
| Unique Identifier | ACC0427 | |
| Other Numbers | LPNHE 02-02; OSTI ID: 807402 | |
| Research Org | Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (US) | |
| Contract No | AC03-76SF00098 | |
| Sponsoring Org | Director, Office of Science. Office of High Energy and Nuclear Physics. Division of High Energy Physics, U.S. Department of Energy (DOE); National Science Foundation (NSF) (US) | |
| Subject | 71 Classical And Quantum Mechanics, General Physics; 72 Physics Of Elementary Particles And Fields; Cosmological Models; Cosmology; Red Shift; Stars; Supernovae | |
| Keywords | Cosmology Type Ia Supernovae | |
| Related Web Pages | Saul Perlmutter, Distant Supernovae, Dark Energy, and the Accelerating Expansion of the Universe | |
| Abstract | We present a measurement of the rate of distant Type Ia supernovae derived using 4 large subsets of data from the Supernova Cosmology Project. Within this fiducial sample, which surveyed about 12 square degrees, thirty-eight supernovae were detected at redshifts 0.25--0.85. In a spatially flat cosmological model consistent with the results obtained by the Supernova Cosmology Project, we derive a rest-frame Type Ia supernova rate at a mean red shift z {approx_equal} 0.55 of 1.53 {sub -0.25}{sub -0.31}{sup 0.28}{sup 0.32} x 10{sup -4} h{sup 3} Mpc{sup -3} yr{sup -1} or 0.58{sub -0.09}{sub -0.09}{sup +0.10}{sup +0.10} h{sup 2} SNu(1 SNu = 1 supernova per century per 10{sup 10} L{sub B}sun), where the first uncertainty is statistical and the second includes systematic effects. The dependence of the rate on the assumed cosmological parameters is studied and the redshift dependence of the rate per unit comoving volume is contrasted with local estimates in the context of possible cosmic star formation histories and progenitor models. | |
| 260 K 40 pp. | |
| View Document | ||
