DESI Survey Validation Data in the COSMOS/Hyper Suprime-Cam Field: Cool Gas Trace Main-sequence Star-forming Galaxies at the Cosmic Noon
Abstract We present the first result in exploring the gaseous halo and galaxy correlation using the Dark Energy Spectroscopic Instrument survey validation data in the Cosmic Evolution Survey (COSMOS) and Hyper Suprime-Cam field. We obtain multiphase gaseous halo properties in the circumgalactic medi...
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Published in | The Astrophysical journal Vol. 960; no. 1; pp. 34 - 53 |
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Main Authors | , , , , , , , , , , , , , , , , , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Philadelphia
The American Astronomical Society
01.01.2024
IOP Publishing |
Subjects | |
Online Access | Get full text |
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Summary: | Abstract
We present the first result in exploring the gaseous halo and galaxy correlation using the Dark Energy Spectroscopic Instrument survey validation data in the Cosmic Evolution Survey (COSMOS) and Hyper Suprime-Cam field. We obtain multiphase gaseous halo properties in the circumgalactic medium by using 115 quasar spectra (signal-to-noise ratio > 3). We detect Mg
ii
absorption at redshift 0.6 <
z
< 2.5, C
iv
absorption at 1.6 <
z
< 3.6, and H
i
absorption associated with the Mg
ii
and C
iv
. By crossmatching the COSMOS2020 catalog, we identify the Mg
ii
and C
iv
host galaxies in 10 quasar fields at 0.9<
z
< 3.1. We find that within the impact parameter of 250 kpc, a tight correlation is seen between the strong Mg
ii
equivalent width and the host galaxy star formation rate. The covering fraction
f
c
of the strong Mg
ii
selected galaxies, which is the ratio of the absorbing galaxy in a certain galaxy population, shows significant evolution in the main-sequence galaxies and marginal evolution in all the galaxy populations within 250 kpc at 0.9 <
z
< 2.2. The
f
c
increase in the main-sequence galaxies likely suggests the coevolution of strong Mg
ii
absorbing gas and the main-sequence galaxies at the cosmic noon. Furthermore, Mg
ii
and C
iv
absorbing gas is detected out of the galaxy virial radius, tentatively indicating the feedback produced by the star formation and/or the environmental effects. |
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Bibliography: | Galaxies and Cosmology AAS45300 Tsinghua University Initiative Scientific Research Program French Alternative Energies and Atomic Energy Commission (CEA) National Science Foundation of China Gordon and Betty Moore Foundation China Manned Space Project National Science Foundation (NSF) Heising-Simons Foundation National Council of Science and Technology of Mexico (CONACYT) USDOE Office of Science (SC), High Energy Physics (HEP) the Ministry of Science and Innovation of Spain (MICINN) AC02-05CH11231; 11721303; 11890693; 12303011; 2018YFA0404503; 12073014; 12120101003; AST-0950945 National Key Research and Development Program of China Science and Technologies Facilities Council of the United Kingdom |
ISSN: | 0004-637X 1538-4357 |
DOI: | 10.3847/1538-4357/ad09b2 |