ALMA view of a massive spheroid progenitor: a compact rotating core of molecular gas in an AGN host at z=2.226

Abstract

We present ALMA observations at 107.291 GHz (band 3) and 214.532 GHz (band 6) of GMASS 0953, a star-forming galaxy at z=2.226 hosting an obscured AGN that has been proposed as a progenitor of compact quiescent galaxies (QG). We measure for the first time the size of the dust and molecular gas emission of GMASS 0953 that we find to be extremely compact ($\sim$1 kpc). This result, coupled with a very high ISM density (n$\sim$10${}^{5.5}$ cm${}^{-3}$), a low gas mass fraction ($\sim$0.2) and a short gas depletion timescale ($\sim$150 Myr) imply that GMASS 0953 is experiencing an episode of intense star-formation in its central region that will rapidly exhaust its gas reservoirs, likely aided by AGN-induced feedback, confirming its fate as a compact QG. Kinematic analysis of the CO(6-5) line shows evidence of rapidly-rotating gas ($V_{rot}$=320${}_{-53}^{+92}$ km s${}^{-1}$), as observed also in a handful of similar sources at the same redshift. On-going quenching mechanisms could either destroy the rotation or leave it intact leading the galaxy to evolve into a rotating QG.

MNRAS in press, 8 pages, 8 figures

References in corpus (34)

• 3D-HST+CANDELS: The Evolution of the Galaxy Size-Mass Distribution since $z=3$
• A simple model to interpret the ultraviolet, optical and infrared emission from galaxies
• Compaction and Quenching of High-z Galaxies in Cosmological Simulations: Blue and Red Nuggets
• The Chandra Deep Field-South Survey: 7 Ms Source Catalogs
• Diagnostics of irradiated dense gas in galaxy nuclei. II. A grid of XDR and PDR models
• Evolution of Interstellar Medium, Star Formation, and Accretion at High Redshift
• The GOODS-MUSIC sample: a multicolour catalog of near-IR selected galaxies in the GOODS-South field
• Strongly baryon-dominated disk galaxies at the peak of galaxy formation ten billion years ago
• CO excitation of normal star forming galaxies out to z=1.5 as regulated by the properties of their interstellar medium
• The Formation of Massive, Compact Galaxies at z=2 in the Illustris Simulation
• Evidence for Wide-Spread AGN Driven Outflows in the Most Massive z~1-2 Star Forming Galaxies
• The mass distribution in early-type disk galaxies: declining rotation curves and correlations with optical properties
• Sub-kpc ALMA imaging of compact star-forming galaxies at z~2.5: revealing the formation of dense galactic cores in the progenitors of compact quiescent galaxies
• The origin of fast molecular outflows in quasars: molecule formation in AGN-driven galactic winds
• Effective destruction of CO by cosmic rays: implications for tracing H${}_2$ gas in the Universe
• VLA and ALMA Imaging of Intense, Galaxy-Wide Star Formation in z ~ 2 Galaxies
• Bulge-forming galaxies with an extended rotating disk at z~2
• A massive, dead disk galaxy in the early Universe
• Molecular outflow and feedback in the obscured Quasar XID2028 revealed by ALMA
• Early formation of massive, compact, spheroidal galaxies with classical profiles by violent disc instability or mergers
• A Massive Galaxy in its Core Formation Phase Three Billion Years After the Big Bang
• CANDELS: Elevated Black Hole Growth in the Progenitors of Compact Quiescent Galaxies at z~2
• ALMA reveals optically thin, highly excited CO gas in the jet-driven winds of the galaxy IC5063
• ALMA reveals starburst-like interstellar medium conditions in a compact star-forming galaxy at z ~ 2 using [CI] and CO
• Rotating starburst cores in massive galaxies at z=2.5
• Spatially resolved kinematics in the central 1 kpc of a compact star-forming galaxy at z=2.3 from ALMA CO observations
• Low Gas Fractions Connect Compact Star-Forming Galaxies to their z ~ 2 Quiescent Descendants
• Evidence for feedback in action from the molecular gas content in the z~1.6 outflowing QSO XID2028
• ALMA Twenty-six arcmin${}^2$ Survey of GOODS-S at One-millimeter (ASAGAO): X-ray AGN Properties of Millimeter-Selected Galaxies
• The KMOS${}^{3D}$ Survey: rotating compact star forming galaxies and the decomposition of integrated line widths
• Lyα emission from galaxies in the Epoch of Reionization
• CO excitation in the Seyfert galaxy NGC 34: stars, shock or AGN driven?
• CO excitation in the Seyfert galaxy NGC7130
• Angular Momentum of Early and Late Type Galaxies: Nature or Nurture?

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• The ALPINE-ALMA [CII] Survey: Kinematic Diversity & Rotation in Massive Star Forming Galaxies at z~4.4-5.9
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• The Origin of Massive Compact Galaxies: Lessons from IllustrisTNG
• Extremely Low Molecular Gas Content in the Vicinity of a Red Nugget Galaxy at $z=1.91$
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• Tight correlation of star formation with [Ci] and CO lines across cosmic time