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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

—

Návaznosti

—

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Astronomy & Astrophysics

ISSN

0004-6361

e-ISSN

1432-0746

Svazek periodika

686

Číslo periodika v rámci svazku

June

Stát vydavatele periodika

FR - Francouzská republika

Počet stran výsledku

18

Strana od-do

A64

Kód UT WoS článku

001234763800006

EID výsledku v databázi Scopus

2-s2.0-85195167638