Results 81 to 90 of about 379 (121)

A Bias-corrected Luminosity Function for Red Supergiant Supernova Progenitor Stars

open access: yesThe Astrophysical Journal Letters
The apparent tension between the luminosity functions of red supergiant (RSG) stars and of RSG progenitors of Type II supernovae (SNe) is often referred to as the RSG problem and it motivated some to suggest that many RSGs end their life without an SN ...
Nora L. Strotjohann   +2 more
doaj   +1 more source

Quasar variability: an astrostatistical challenge

open access: yes, 2016
Variable behavior on all time scales seems to be ubiquitous phenomenon in almost all classes of active galactic nuclei. This work deals with two topics. One being detection of microvariability (intra-night variability) in the sources which are obscured and were believed to be non variable - type 2 quasars.
openaire   +1 more source

Editorial: Frontiers in astronomy and space sciences: a decade of discovery and advancement-10th anniversary conference

open access: yesFrontiers in Astronomy and Space Sciences
Julio Navarro   +7 more
doaj   +1 more source

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