The Latest Version of the Standardized Candle Method for Type II Supernovae
نویسنده
چکیده
I use the largest available sample of Type II plateau supernovae to examine the previously reported luminosity-velocity relation. This study confirms such relation which permits one to standardize the luminosities of these objects from a spectroscopic measurement of their envelope velocities, and use them as extragalactic distance indicators. The “standard candle method” (SCM) yields a Hubble diagram with a dispersion of 0.3 mag, which implies that the SCM produces distances with a precision of 15%. Using two nearby supernovae with Cepheid distances I find H0=81±10 km s Mpc, which compares with H0=74 derived from Type Ia supernovae.
منابع مشابه
The Standard Candle Method for Type II Supernovae and the Hubble Constant
The " standard candle method " for Type II plateau supernovae produces a Hubble diagram with a dispersion of 0.3 mag, which implies that this technique can produce distances with a precision of 15%. Using four nearby supernovae with Cepheid distances I find H 0 (V)=75±7, and H 0 (I)=65±12.
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تاریخ انتشار 2003