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Exploring the Carbon Simmering Phase: Reaction Rates, Mixing, and the Convective Urca Process
Josiah Schwab, Héctor Martínez-Rodríguez, Anthony L. Piro +1
The neutron excess at the time of explosion provides a powerful discriminant among models of Type Ia supernovae. Recent calculations of the carbon simmering phase in single degener…
Stellar Multiplicity Meets Stellar Evolution And Metallicity: The APOGEE View
Carles Badenes, Christine Mazzola, Todd A. Thompson +21
We use the multi-epoch radial velocities acquired by the APOGEE survey to perform a large scale statistical study of stellar multiplicity for field stars in the Milky Way, spanning…
Evidence for a Sub-Chandrasekhar Mass Type~Ia Supernova in the Ursa Minor Dwarf Galaxy
Andrew McWilliam, Anthony L. Piro, Carles Badenes +1
A longstanding problem is identifying the elusive progenitors of Type Ia supernovae (SNe Ia), which can roughly be split into Chandraksekhar and sub-Chandrasekhar mass events. An i…
No hot and luminous progenitor for Tycho's supernova
T. E. Woods, P. Ghavamian, C. Badenes +1
Type Ia supernovae have proven vital to our understanding of cosmology, both as standard candles and for their role in galactic chemical evolution; however, their origin remains un…
The two most recent thermonuclear supernovae in the Local Group: radio constraints on their progenitors and evolution
Sumit K. Sarbadhicary, Laura Chomiuk, Carles Badenes +3
Young supernova remnants (SNRs) provide a unique perspective on supernova (SN) progenitors and connect the late evolution of SNe with the onset of the SNR phase. Here we study SN 1…
The Impact of Progenitor Mass Loss on the Dynamical and Spectral Evolution of Supernova Remnants
Daniel J. Patnaude, Shiu-Hang Lee, Patrick O. Slane +4
There is now substantial evidence that the progenitors of some core-collapse supernovae undergo enhanced or extreme mass loss prior to explosion. The imprint of this mass loss is o…