Journal
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
Volume 257, Issue 2, Pages -Publisher
IOP Publishing Ltd
DOI: 10.3847/1538-4365/ac28f5
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Funding
- National Research Council of Canada via the Plaskett Fellowship of the Dominion Astrophysical Observatory
- Natural Sciences and Engineering Research Council of Canada
- Canada Research Chairs program
- STFC [ST/S00033X/1, ST/R000840/1]
- Australian Research Council's Discovery Project and Future Fellowship funding schemes [DP210100337, FT180100066]
- ICRAR-UWA
- ERC Starting Grant Cluster Web [804208]
- NASA [80NSSC19K1651]
- CONICYT PFCHA/ CONICYT-FULBRIGHT BIO [2016-56160020]
- NRAO Student Observing Support (SOS) [SOSPA7-014]
- National Research Foundation of Korea (NRF) [2018R1D1A1B07048314]
- National Science Foundation of China [12073002, 11721303]
- Netherlands Organization for Scientific Research (NWO) [639.041.751]
- National Science Foundation [1815251]
- Australian Research Council Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D) [CE170100013]
- William and Caroline Herschel Postdoctoral Fellowship fund
- Division Of Astronomical Sciences
- Direct For Mathematical & Physical Scien [1815251] Funding Source: National Science Foundation
- National Research Foundation of Korea [2018R1D1A1B07048314] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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The VERTICO survey aims to understand the physical mechanisms affecting star formation and galaxy evolution in dense environments through CO observations and data analysis. It reveals the characteristics of molecular gas in galaxies and compares them with field galaxies, providing important insights into galaxy evolution. This study provides valuable data and research directions for further exploration of galaxy evolution.
We present the Virgo Environment Traced in CO (VERTICO) survey, a new effort to map (CO)-C-12 (2-1), (CO)-C-13 (2-1), and (CO)-O-18 (2-1) in 51 Virgo Cluster galaxies with the Atacama Compact Array, part of the Atacama Large Millimeter/submillimeter Array. The primary motivation of VERTICO is to understand the physical mechanisms that perturb molecular gas disks, and therefore star formation and galaxy evolution, in dense environments. This first paper contains an overview of VERTICO's design and sample selection, (CO)-C-12 (2-1) observations, and data reduction procedures. We characterize global (CO)-C-12 (2-1) fluxes and molecular gas masses for the 49 detected VERTICO galaxies, provide upper limits for the two nondetections, and produce resolved (CO)-C-12 (2-1) data products (median resolution = 8 '' approximate to 640 pc). Azimuthally averaged (CO)-C-12 (2-1) radial intensity profiles are presented along with derived molecular gas radii. We demonstrate the scientific power of VERTICO by comparing the molecular gas size-mass scaling relation for our galaxies with a control sample of field galaxies, highlighting the strong effect that radius definition has on this correlation. We discuss the drivers of the form and scatter in the size-mass relation and highlight areas for future work. VERTICO is an ideal resource for studying the fate of molecular gas in cluster galaxies and the physics of environment-driven processes that perturb the star formation cycle. Upon public release, the survey will provide a homogeneous legacy data set for studying galaxy evolution in our closest cluster.
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