Access

You are not currently logged in.

Access your personal account or get JSTOR access through your library or other institution:

login

Log in to your personal account or through your institution.

If You Use a Screen Reader

This content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.

A Generalized K Correction for Type Ia Supernovae: Comparing R-band Photometry Beyond z= 0.2 with B, V, and R-band Nearby Photometry

Alex Kim, Ariel Goobar and Saul Perlmutter
Publications of the Astronomical Society of the Pacific
Vol. 108, No. 720 (1996 February), pp. 190-201
Stable URL: http://www.jstor.org/stable/40680703
Page Count: 12
  • Read Online (Free)
  • Subscribe ($19.50)
  • Cite this Item
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
A Generalized K Correction for Type Ia Supernovae: Comparing R-band Photometry Beyond z= 0.2 with B, V, and R-band Nearby Photometry
Preview not available

Abstract

Photometric measurements show that, as a group, nearby Type Ia supernovae follow similar light curves and reach similar peak magnitudes (Branch and Tammann, ARAA, 30, 359, 1992). Thus, these supernovae may serve as standard candles or calibrated candles at cosmological distances. Magnitudes of local and distant supernovae, both in the same filter band, are compared using a K correction to account for the different spectral regions incident on that filter. A generalized approach compares magnitudes in different bands for the nearby and distant supernovae, bands that are selected to give sensitivity in corresponding regions of the unredshifted and redshifted spectra. Thus, R magnitudes for supernovae at z≈0.5 are compared with magnitudes of local supernovae. We compute these generalized corrections over a range of redshifts and bandpass pairs and discuss their advantages over the traditional single-band whereas the traditional correction is less accurate and can be difficult to determine beyond z>0.2.

Page Thumbnails

  • Thumbnail: Page 
190
    190
  • Thumbnail: Page 
191
    191
  • Thumbnail: Page 
192
    192
  • Thumbnail: Page 
193
    193
  • Thumbnail: Page 
194
    194
  • Thumbnail: Page 
195
    195
  • Thumbnail: Page 
196
    196
  • Thumbnail: Page 
197
    197
  • Thumbnail: Page 
198
    198
  • Thumbnail: Page 
199
    199
  • Thumbnail: Page 
200
    200
  • Thumbnail: Page 
201
    201