The [CII] 158 $\mu$m emission line as a gas mass tracer in high redshift quiescent galaxies

Abstract

Many efforts have been done in recent years to probe the gas fraction evolution of massive quiescent galaxies (QGs); however, a clear picture has not yet been established. Recent spectroscopic confirmations at z>3 offer the chance to measure the residual gas reservoirs of massive galaxies a few hundreds of Myr after their death and to study how fast quenching proceeds in a highly star-forming Universe. Even so, stringent constraints at z$>$2 remain hardly accessible with ALMA when adopting molecular gas tracers commonly used for the quenched population. In this letter, we propose overcoming this impasse by using the carbon [CII] 158 $\mu$m emission line to systematically probe the gaseous budget of unlensed QGs at z>2.8, when these galaxies could still host non-negligible star formation on an absolute scale and when the line becomes best observable with ALMA (Bands 8 and 7). So far predominantly used for star-forming galaxies, this emission line is the best choice to probe the gas budget of spectroscopically confirmed QGs at $z>3$, reaching 2-4 and 13-30 times deeper than dust continuum (ALMA band 7) and CO(2-1)/(1-0) (VLA K-K$\alpha$ bands), respectively, at fixed integration time. Exploiting archival ALMA observations, we place conservative 3$\sigma$ upper limits on the molecular gas fraction (f${}_{\mathrm{mol}}=M_{{\mathrm{H}}_2}/M_{\star }$) of ADF22-QG1 (f${}_{\mathrm{mol}}$<21%), ZF-COS-20115 (f${}_{\mathrm{mol}}$<3.2%), two of the best-studied high-z QGs in the literature, and GS-9209 (f${}_{\mathrm{mol}}$<72%), the most distant massive QG discovered to date. The deep upper limit found for ZF-COS-20115 is 3 times lower than previously anticipated for high-z QGs suggesting, at best, the existence of a large scatter in the f${}_{\mathrm{mol}}$ distribution of the first QGs. Lastly, we discuss the current limitations of the method and propose ways to mitigate some of them by exploiting ALMA bands 9 and 10.

7 pages, 2 figures. A&A Letters in press

References in corpus (48)

• The Herschel view of the dominant mode of galaxy growth from z=4 to the present day
• The Role of Pressure in GMC Formation II: The H_2 - Pressure Relation
• CO excitation of normal star forming galaxies out to z=1.5 as regulated by the properties of their interstellar medium
• The Herschel Dwarf Galaxy Survey: I. Properties of the low-metallicity ISM from PACS spectroscopy
• A massive quiescent galaxy at redshift 4.658
• A dynamically cold disk galaxy in the early Universe
• Photodissociation and X-Ray Dominated Regions
• Detection of the 205 um [NII] Line from the Carina Nebula
• A massive stellar bulge in a regularly rotating galaxy 1.2 billion years after the Big Bang
• The ALPINE-ALMA [CII] survey: Molecular gas budget in the Early Universe as traced by [CII]
• The Cosmic Decline in the H2/HI-Ratio in Galaxies
• The Massive Ancient Galaxies At $z>3$ NEar-infrared (MAGAZ3NE) Survey: Confirmation of Extremely Rapid Star-Formation and Quenching Timescales for Massive Galaxies in the Early Universe
• An Extremely Massive Quiescent Galaxy at $z=3.493$: Evidence of Insufficiently Rapid Quenching Mechanisms in Theoretical Models
• Automated Mining of the ALMA Archive in the COSMOS Field (A3COSMOS): I. Robust ALMA Continuum Photometry Catalogs and Stellar Mass and Star Formation Properties for ~700 Galaxies at z=0.5-6
• COSMOS2020: The cosmic evolution of the stellar-to-halo mass relation for central and satellite galaxies up to z~5
• Massive quenched galaxies at z~0.7 retain large molecular gas reservoirs
• Dust temperature in ALMA $\hbox{[C $\scriptstyle\rm II $]}$-detected high-$z$ galaxies
• Deep CO(1-0) Observations of z=1.62 Cluster Galaxies with Substantial Molecular Gas Reservoirs and Normal Star Formation Efficiencies
• Quenching of star formation from a lack of inflowing gas to galaxies
• A direct constraint on the gas content of a massive, passively evolving elliptical galaxy at z = 1.43
• ALMA measures rapidly depleted molecular gas reservoirs in massive quiescent galaxies at z~1.5
• On the Gas Content, Star Formation Efficiency, and Environmental Quenching of Massive Galaxies in Proto-Clusters at z~2.0-2.5
• The Typical Massive Quiescent Galaxy at z$\sim$3 is a Post-starburst
• The Interstellar Medium of Quiescent Galaxies and its Evolution With Time
• The Rapid Build-up of Massive Early-type Galaxies. Supersolar Metallicity, High Velocity Dispersion and Young Age for an ETG at z=3.35
• Extremely Low Molecular Gas Content in a Compact, Quiescent Galaxy at z=1.522
• The bending of the star-forming main sequence traces the cold- to hot-accretion transition mass over 0<z<4
• AGN feedback on molecular gas reservoirs in quasars at $z\sim$2.4
• HST grism spectroscopy of z~3 massive quiescent galaxies: Approaching the metamorphosis
• Multi-phase outflows in post starburst E+A galaxies -- I. General sample properties and the prevalence of obscured starbursts
• The Diverse Molecular Gas Content of Massive Galaxies Undergoing Quenching at z~1
• MAGAZ3NE: High Stellar Velocity Dispersions for Ultra-Massive Quiescent Galaxies at $z\gtrsim 3$
• COSMOS2020: Ubiquitous AGN Activity of Massive Quiescent Galaxies at $0<z<5$ Revealed by X-ray and Radio Stacking
• High Molecular-Gas to Dust Mass Ratios Predicted in Most Quiescent Galaxies
• Consistent dynamical and stellar masses with potential light IMF in massive quiescent galaxies at $3<z<4$ using velocity dispersions measurements with MOSFIRE
• Compact, bulge dominated structures of spectroscopically confirmed quiescent galaxies at z~3
• Atomic Gas Dominates the Baryonic Mass of Star-forming Galaxies at $z\approx 1.3$
• Characterizing the Multi-Phase Origin of [CII] Emission in M101 and NGC 6946 with Velocity Resolved Spectroscopy
• An increase in black hole activity in galaxies with kinematically misaligned gas
• Early Science with the Large Millimeter Telescope: Constraining the Gas Fraction of a Compact Quiescent Galaxy at z=1.883
• In pursuit of giants: II. Evolution of dusty quiescent galaxies over the last six billion years from the hCOSMOS survey
• The State of the Molecular Gas in Post-Starburst Galaxies
• Bulge formation inside quiescent lopsided stellar disks: connecting accretion, star formation and morphological transformation in a z ~ 3 galaxy group
• The large molecular gas fraction of post-starburst galaxies at z > 1
• The evolution of the gas fraction of quiescent galaxies modeled as a consequence of their creation rate
• The Gas Mass Reservoir of Quiescent Galaxies at Cosmic Noon
• The uncertain interstellar medium of high-redshift quiescent galaxies: Impact of methodology
• Atmospheric pressure and molecular cloud formation in early-type galaxies

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• The ALMA-ALPINE [CII] survey: sub-kpc morphology of 3 main-sequence galaxy systems at z~4.5 revealed by ALMA
• COALAS III: The ATCA CO(1-0) look at the growth and death of H$\alpha$ emitters in the Spiderweb protocluster at z=2.16
• Tracing the evolutionary pathways of dust and cold gas in high-z quiescent galaxies with SIMBA
• When relics were made: vigorous stellar rotation and low dark matter content in the massive ultra-compact galaxy GS-9209 at z=4.66
• Ionized Carbon in Galaxies: The [C II] 158 $\mu$m Line as a Total Molecular Gas Mass Tracer Revisited
• The [C II] line emission as an interstellar medium probe in the MARIGOLD galaxies
• The ALPINE-CRISTAL-JWST survey: spatially resolved star formation relations at $z\sim 5$
• SMA Observations of the Archetypal Compact Steep-spectrum Radio Source 3C 303.1