7 papers · 1 filter
Self Calibrated Galaxy Groups from the DESI DR1 Bright Galaxy Survey
I. Williams, J. Tinker, K. Wang +45
We present a galaxy group catalog built from Data Release 1 of the Dark Energy Spectroscopic Instrument (DESI) Bright Galaxy Survey, using the Self Calibrated Group Finder. The alg…
Radio Quasars in the Cosmic Dawn: A Spectroscopic Sample from the DESI Survey
Anniek J. Gloudemans, Jinyi Yang, David M. Alexander +55
We present the largest statistical spectroscopic sample of radio quasars at 4.7<z<6.7 to date. These have been selected from a dedicated Dark Energy Survey Instrument (DESI) target…
Extending the Stellar-to-Halo Mass Relation to Dwarf Galaxies with DESI DR1
Z. Shao, Y. Zu, A. Salcedo +51
Constraining the dark matter halos of the smallest galaxies offers fundamental insights into the nature of dark matter and stellar feedback. Using the Dark Energy Spectroscopic Ins…
Beyond traditional emission-line diagnostics: using autoencoders to uncover active galactic nuclei in DESI spectra
J. A. Alcolea, M. Siudek, M. Eriksen +49
The growing volume of spectroscopic data in modern surveys motivates data-driven approaches that complement traditional emission-line diagnostics for active galactic nuclei (AGN) i…
Weak Evolution of Cosmic Atomic Hydrogen over the Past 4.5 Billion Years
Chuan-Peng Zhang, Hong Guo, Yizhou Gu +49
The cosmic star formation rate density (CSFRD) has declined sharply toward the present day, but the roles of the atomic and molecular gas reservoirs remain uncertain. We measure th…
The largest sample of AGN outflows in dwarf galaxies using DESI DR1
V. Rodríguez Morales, M. Mezcua, Ragadeepika Pucha +40
In the last decade, the presence of active galactic nuclei (AGN) outflows and feedback in dwarf galaxies (<) has gained ground over supern…
Joint Modeling of GD-1 and C-19 as Old Streams
Raymond G. Carlberg, Ting S. Li, Emma Jarvis +39
DESI observational data for the GD-1 and C-19 streams are compared to stream simulations in an evolving multi-halo potential of a Milky Way-like galaxy based on a cosmological Milk…