Measuring the gas reservoirs in 108< M☆ < 1011 M⊙ galaxies at 1≤z≤3

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A90106%2F24%3A00617612" target="_blank" >RIV/67985815:90106/24:00617612 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1051/0004-6361/202348661" target="_blank" >https://doi.org/10.1051/0004-6361/202348661</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/0004-6361/202348661" target="_blank" >10.1051/0004-6361/202348661</a>

Result language

angličtina

Original language name

Measuring the gas reservoirs in 108< M☆ < 1011 M⊙ galaxies at 1≤z≤3

Original language description

Context. Understanding the gas content in galaxies, along with its consumption and replenishment, is vital to our grasp of the evolution of the Universe. Numerous studies have addressed this notion, utilizing various observational tools and analytical methods. These include examining low-transition (CO)-C-12 millimeter rotational lines and exploring the far-infrared and the (sub-)millimeter emission of galaxies. With the capabilities of present-day facilities, much of this research has been centered on relatively bright galaxies. Aims. This study is aimed at exploring the gas reservoirs of a more general type of galaxy population at 1.0 < z < 3.0 that is not restricted to bright (sub-)millimeter objects. We strive to obtain a measurement that will help to constrain our knowledge of the gas content at 10(10 11) M-circle dot, with upper limits at similar to 10(8 10) M-circle dot. Methods. We stacked ALMA 1.1 mm data to measure the gas content of a mass-complete sample of galaxies down to similar to 10(8.6) M-circle dot at z = 1 (similar to 10(9.2) M-circle dot at z = 3) extracted from the HST/CANDELS sample in GOODS-S. The selected sample is composed of 5530 predominantly blue (< b i >similar to 0.12 mag, < i H >similar to 0.81 mag), star-forming main sequence (MS) objects (Delta MS = log SFR-log SFRMS similar to0.03 dex). Results. At 10(10 11) M-circle dot, our gas fractions (f(gas) = M-gas/(M-gas + M-star)), ranging from 0.32 to 0.48 at these redshifts, are in good agreement with other studies based on mass-complete samples down to 10(10) M-circle dot. These values are, however, lower than expected, according to other works more biased to individual detections. At 10(9 10) M-circle dot, we obtained 3 sigma upper limits for the f(gas) values ranging from 0.69 to 0.77. At 10(8 9) M-circle dot, these upper limits rise to similar to 0.97. The upper limits at 10(9 10) M-circle dot are on the level of the extrapolations of scaling relations based on mass-complete samples and below those based on individual detections. As such, these results suggest that the gas content of low-mass galaxies is, at most, equivalent to what has been extrapolated from the literature scaling relations based on mass-complete samples down to 10(10) M-circle dot. Overall, the comparison of our results with the literature reflects how the inclusion of bluer, less obscured, and more MS-like objects progressively pushes the gas content down to lower values.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10308 - Astronomy (including astrophysics,space science)

Project

—

Continuities

—

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Astronomy & Astrophysics

ISSN

0004-6361

e-ISSN

1432-0746

Volume of the periodical

686

Issue of the periodical within the volume

June

Country of publishing house

FR - FRANCE

Number of pages

18

Pages from-to

A64

UT code for WoS article

001234763800006

EID of the result in the Scopus database

2-s2.0-85195167638