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The distances to five Type II supernovae using the expanding photosphere method, and the value of H[SUB]0[/SUB]
- Source :
- The Astrophysical Journal. 432:42
- Publication Year :
- 1994
- Publisher :
- American Astronomical Society, 1994.
-
Abstract
- We have used observations gathered at Cerro Tololo Inter-American Observatory (CTIO) to measure distances by the expanding photosphere method (EPM) to five Type II supernovae. These supernovae lie at redshifts from cz = 1100 km/s to cz = 5500 km/s, and increase to 18 the number of distances measured using EPM. We compare distances derived to 11 Type II supernovae with distances to their galaxies measured using the Tully-Fisher method. We find that the Tully-Fisher distances average 11% +/- 7% smaller. The comparison shows no significant evidence of any large distance-dependent bias in the Tully-Fisher distances. We employ the sample of EPM distances from 4.5 Mpc to 180 Mpc to derive a value for the Hubble constant. We find H(sub 0) = 73 +/- 6 (statistical) +/- 7 (systematic) km/s/Mpc.
- Subjects :
- Physics
Photosphere
Astronomy
Astronomy and Astrophysics
Astrophysics::Cosmology and Extragalactic Astrophysics
Astrophysics
Cosmology
Galaxy
Redshift
Radial velocity
Supernova
symbols.namesake
Space and Planetary Science
symbols
Astrophysics::Solar and Stellar Astrophysics
Stellar evolution
Astrophysics::Galaxy Astrophysics
Hubble's law
Subjects
Details
- ISSN :
- 15384357 and 0004637X
- Volume :
- 432
- Database :
- OpenAIRE
- Journal :
- The Astrophysical Journal
- Accession number :
- edsair.doi...........1277342d07994ad8033195fbf32f4bb2
- Full Text :
- https://doi.org/10.1086/174546