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Journal Articles The Astrophysical Journal Year : 2022

VERTICO II: How H I-identified Environmental Mechanisms Affect the Molecular Gas in Cluster Galaxies

Nikki Zabel
  • Function : Author
Toby Brown
  • Function : Author
Christine D. Wilson
  • Function : Author
Timothy A. Davis
  • Function : Author
Luca Cortese
  • Function : Author
Laura C. Parker
  • Function : Author
Barbara Catinella
  • Function : Author
Ryan Chown
  • Function : Author
Aeree Chung
  • Function : Author
Tirna Deb
  • Function : Author
Sara L. Ellison
  • Function : Author
María J. Jiménez-Donaire
  • Function : Author
Bumhyun Lee
  • Function : Author
Ian D. Roberts
  • Function : Author
Kristine Spekkens
  • Function : Author
Adam R. H. Stevens
  • Function : Author
Mallory Thorp
  • Function : Author
Stephanie Tonnesen
  • Function : Author
Vicente Villanueva
  • Function : Author

Abstract

In this VERTICO early science paper we explore in detail how environmental mechanisms, identified in H I, affect the resolved properties of molecular gas reservoirs in cluster galaxies. The molecular gas is probed using ALMA ACA (+TP) observations of 12CO(2-1) in 51 spiral galaxies in the Virgo cluster (of which 49 are detected), all of which are included in the VIVA H I survey. The sample spans a stellar mass range of $9\leqslant \mathrm{log}\,{M}_{\star }/{M}_{\odot }\leqslant 11$ . We study molecular gas radial profiles, isodensity radii, and surface densities as a function of galaxy H I deficiency and morphology. There is a weak correlation between global H I and H2 deficiencies, and resolved properties of molecular gas correlate with H I deficiency: galaxies that have large H I deficiencies have relatively steep and truncated molecular gas radial profiles, which is due to the removal of low-surface-density molecular gas on the outskirts. Therefore, while the environmental mechanisms observed in H I also affect molecular gas reservoirs, there is only a moderate reduction of the total amount of molecular gas.
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insu-03780764 , version 1 (20-09-2022)

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Nikki Zabel, Toby Brown, Christine D. Wilson, Timothy A. Davis, Luca Cortese, et al.. VERTICO II: How H I-identified Environmental Mechanisms Affect the Molecular Gas in Cluster Galaxies. The Astrophysical Journal, 2022, 933, ⟨10.3847/1538-4357/ac6e68⟩. ⟨insu-03780764⟩
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