NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-06-16 T06:34:35 PDT
Help | Comment | NED Home

For refcode 1996PASP..108..190K:
Retrieve 6 NED objects in this reference.
Please click here for ADS abstract

NED Abstract

Copyright by Astronomical Society of the Pacific. Reproduced by permission
1996PASP..108..190K 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 Center for Particle Astrophysics and Lawrence Berkeley Laboratory, 50- 232, Berkeley, California 94720 Electronic mail: agkim@ibl.gov ARIEL GOOBAR Department of Physics, Stockholm University, Box 6730,5-l13 85 Stockholm, Sweden Electronic mail: ariel@physto.se SAUL PERLMUTTER Lawrence Berkeley Laboratory, 50-232, and Center for Particle Astrophysics, University of California, Berkeley, California 94720 Electronic mail: saul@lbl.gov Received 1995 March 21; accepted 1995 November 14 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 B magnitudes of local supernovae. We compute these generalized K corrections over a range of redshifts and bandpass pairs and discuss their advantages over the traditional single- band K correction. In particular, errors near maximum light can be kept below 0.05 mag out to at least z ~ 0.6, whereas the traditional K correction is less accurate and can be difficult to determine beyond z > 0.2.
Retrieve 6 NED objects in this reference.
Please click here for ADS abstract

Back to NED Home