Journal
ASTROPHYSICAL JOURNAL
Volume 933, Issue 1, Pages -Publisher
IOP Publishing Ltd
DOI: 10.3847/1538-4357/ac6e68
Keywords
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Categories
Funding
- Natural Sciences and Engineering Research Council of Canada
- Canada Research Chairs program
- National Science Foundation of China [12073002, 11721303]
- Jim Buckee Fellowship at ICRAR
- ERC [804208]
- National Research Foundation [2018R1D1A1B07048314]
- Simons Foundation
- Research Council of Canada
- Australian Research Council [DP210100337, FT180100066, CE170100013]
- scholarship ANIDFULBRIGHT BIO [2016-56160020]
- NRAO Student Observing Support (SOS) [SOSPA7-014]
- Australian Research Council Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D) [CE170100013]
- [NSF-AST1615960]
- Australian Research Council [FT180100066] Funding Source: Australian Research Council
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In cluster galaxies, galaxies with large H I deficiencies exhibit relatively steep and truncated molecular gas radial profiles, mainly due to the removal of low-surface-density molecular gas in the outskirts.
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 (CO)-C-12(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 <= log M-*/M-circle dot <= 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 H-2 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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