Book ChapterDOI
Supernova statistics and related problems
G. A. Tammann
- Vol. 90, pp 371-403
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TLDR
In this article, the absolute maximum magnitudes of SNeI and SNeII are discussed, as well as the evidence of SNEI being good standard candles in close binary systems.Citations
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Journal ArticleDOI
CALIBRATING EXTINCTION-FREE STAR FORMATION RATE DIAGNOSTICS WITH 33 GHz FREE-FREE EMISSION IN NGC 6946
Eric J. Murphy,James J. Condon,Eva Schinnerer,Robert C. Kennicutt,Daniela Calzetti,Lee Armus,George Helou,Jean L. Turner,G. Aniano,P. Beirão,Alberto D. Bolatto,Bernhard R. Brandl,Kevin V. Croxall,Daniel A. Dale,J. Donovan Meyer,Bruce T. Draine,Charles W. Engelbracht,L. K. Hunt,Cai-Na Hao,Jin Koda,H. Roussel,Ramin A. Skibba,J. D. T. Smith +22 more
TL;DR: In this paper, free-free emission measured in the Ka band (26-40 GHz) for 10 star-forming regions in the nearby galaxy NGC 6946, including its starbursting nucleus, was compared with a number of star formation rate (SFR) diagnostics that are typically considered to be unaffected by interstellar extinction.
Journal ArticleDOI
Calibrating Extinction-Free Star Formation Rate Diagnostics with 33GHz Free-Free Emission in NGC6946
Eric J. Murphy,J. J. Condon,Eva Schinnerer,Robert C. Kennicutt,D. Calzetti,L. Armus,George Helou,Jean L. Turner,G. Aniano,P. Beirao,Alberto D. Bolatto,Bernhard R. Brandl,K. V. Croxall,Daniel A. Dale,J. Donovan Meyer,Bruce T. Draine,C. W. Engelbracht,L. K. Hunt,C.-N. Hao,Jin Koda,H. Roussel,R. Skibba,J. D. T. Smith +22 more
TL;DR: In this paper, free-free emission measured in the Ka-band (26-40GHz) for 10 star-forming regions in the nearby galaxy NGC6946, including its starbursting nucleus, was compared with a number of SFR diagnostics that are typically considered to be unaffected by interstellar extinction: nonthermal radio (i.e., 1.4GHz), total infrared (IR; 8-1000um), and warm dust (i., 24um) emission, along with the hybrid (obscured + unobscured) indicators of H\alpha+
Journal ArticleDOI
A New Model for Progenitor Systems of Type IA Supernovae
TL;DR: In this article, a new model for progenitor systems of Type Ia supernovae is proposed, which consists of an accreting white dwarf and a lobe-filling, low-mass red giant.
Journal ArticleDOI
Cooling Flows and Quasars. II. Detailed Models of Feedback-modulated Accretion Flows
Luca Ciotti,Jeremiah P. Ostriker +1 more
TL;DR: In this article, Ciotti et al. showed that even small amounts of accretion on a central BH can cause the release of enough energy to reverse the central inflow, when the Compton temperature (TX) of the emitted radiation is higher than the mean galactic gas temperature.
Journal ArticleDOI
The Hubble Constant: A Summary of the Hubble Space Telescope Program for the Luminosity Calibration of Type Ia Supernovae by Means of Cepheids
TL;DR: The final summary paper of the 15-year program using the Hubble Space Telescope (HST) to determine the Hubble constant from the Cepheid-calibrated luminosity of Type Ia supernovae is presented in this article.
References
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Journal ArticleDOI
The Initial mass function and stellar birthrate in the solar neighborhood
Glenn E. Miller,J. M. Scalo +1 more
TL;DR: In this paper, the authors examined the initial mass function (IMF) and time history of the stellar birthrate in the solar neighborhood assuming a time-independent IMF, and the present-day mass function is constructed from the luminosity function, and a discussion of all the relevant observational quantities (luminosity function and scale heights, correction for non--main-sequence stars, and correction for main-sequence brightening) and the associated uncertainties is given.
Journal ArticleDOI