3 papers
astro-ph.HE2024
Extended Shock Breakout and Early Circumstellar Interaction in SN 2024ggi
Manisha Shrestha, K. Azalee Bostroem, David J. Sand +40
We present high-cadence photometric and spectroscopic observations of supernova (SN) 2024ggi, a Type II SN with flash spectroscopy features which exploded in the nearby galaxy NGC…
astro-ph.HE2024
Early emission lines in SN 2024ggi revealed by high-resolution spectroscopy
Thallis Pessi, Régis Cartier, Emilio Hueichapan +6
We present an analysis of very early high-resolution spectroscopic observations of the Type II supernova (SN) 2024ggi, a nearby SN that occurred in the galaxy NGC 3621 at a distanc…
astro-ph.GA2024
Taking the pulse of the outer Milky Way with HOWVAST: an RR Lyrae density profile out to 200 kpc
Gustavo E. Medina, Ricardo R. Muñoz, Jeffrey L. Carlin +4
In order to constrain the evolutionary history of the Milky Way, we hunt for faint RR Lyrae stars (RRLs) using Dark Energy Camera data from the High cadence Transient Survey (HiTS)…