activity
19942024
most citedSEGUE: A Spectroscopic Survey of 240,000 stars with g=14-20

1.2k citations · 17.1k across the 177 of their papers we have counts for

collaborators

179 papers

astro-ph.GA2024

A Detailed Chemical Study of the Extreme Velocity Stars in the Galaxy

Tyler Nelson, Keith Hawkins, Henrique Reggiani +3

Two decades on, the study of hypervelocity stars is still in its infancy. These stars can provide novel constraints on the total mass of the Galaxy and its Dark Matter distribution…

astro-ph.GA2024★ 1 cited

The Extremely Metal Rich Knot of Stars at the Heart of the Galaxy

Hans-Walter Rix, Vedant Chandra, Gail Zasowski +15

We show with Gaia XP spectroscopy that extremely metal-rich stars in the Milky Way (EMR; ) - but only those - are largely confined to a tight "knot" at the center…

astro-ph.GA2024★ 6 cited

The Low-Mass Stellar Initial Mass Function in Nearby Ultrafaint Dwarf Galaxies

Carrie Filion, Rosemary F. G. Wyse, Hannah Richstein +3

The stellar initial mass function (IMF) describes the distribution of stellar masses that form in a given star formation event. The long main-sequence lifetimes of low-mass stars m…

astro-ph.GA2024

Detection of a Spatially Extended Stellar Population in M33: A Shallow Stellar Halo?

Itsuki Ogami, Yutaka Komiyama, Masashi Chiba +8

We analyze the outer regions of M33, beyond 15 kpc in projected distance from its center using Subaru/HSC multi-color imaging. We identify Red Giant Branch (RGB) stars and Red Clum…

astro-ph.GA2024

Which came first: supermassive black holes or galaxies? Insights from JWST

Joseph Silk, Mitchell Begelman, Colin Norman +2

Insights from JWST observations suggest that AGN feedback evolved from a short-lived, high redshift phase in which radiatively cooled turbulence and/or momentum-conserving outflows…

astro-ph.GA2024

The structure of the stellar halo of the Andromeda galaxy explored with the NB515 for Subaru/HSC. I.: New Insights on the stellar halo up to 120 kpc

Itsuki Ogami, Mikito Tanaka, Yutaka Komiyama +16

We analyse the M31 halo and its substructure within a projected radius of 120 kpc using a combination of Subaru/HSC and CFHT/MegaCam - \& -…