MASCOT: an ESO–ARO legacy survey of molecular gas in nearby SDSS-MaNGA galaxies - I. First data release, and global and resolved relations between H2 and stellar content

Wylezalek, D.; Cicone, C.; Belfiore, F.; Bertemes, C.; Cazzoli, S.; Wagg, J.; Wang (王无忌), W.; Aravena, M.; Maiolino, R.; Martin, S.; Bothwell, M. S.; Brownstein, J. R.; Bundy, K.; De Breuck, C.

doi:10.1093/mnras/stab3356

Title: MASCOT: an ESO–ARO legacy survey of molecular gas in nearby SDSS-MaNGA galaxies - I. First data release, and global and resolved relations between H₂ and stellar content

Journal Article · Thu Nov 25 00:00:00 UTC 2021 · Monthly Notices of the Royal Astronomical Society

DOI: https://doi.org/10.1093/mnras/stab3356 · OSTI ID:1982562

^[1]; Cicone, C. ^[2];

^[3]; Bertemes, C. ^[1];

^[4]; Wagg, J. ^[5];

^[1]; Aravena, M. ^[6]; Maiolino, R. ^[7]; Martin, S. ^[8]; Bothwell, M. S. ^[7];

^[9]; Bundy, K. ^[10]; De Breuck, C. ^[11]

Heidelberg Univ. (Germany)
Univ. of Oslo (Norway)
Istituto Nazionale di Astrofisica (INAF), Firenze (Italy). Osservatorio Astrofisico di Arcetri
Consejo Superior de Investigaciones Cientificas (CSIC), Madrid (Spain). Instituto de Astrofísica de Andalucía (IAA)
SKA Observatory, Cheshire (United Kingdom)
Universidad Diego Portales, Santiago (Chile)
Univ. of Cambridge (United Kingdom). Cavendish Lab.
European Southern Observatory, Santiago (Chile); Joint ALMA Observatory, Santiago (Chile)
Univ. of Utah, Salt Lake City, UT (United States)
Univ. of California, Santa Cruz, CA (United States)
European Southern Observatory, Garching (Germany)

We present the first data release of the Mapping Nearby Galaxies at Apache Point Observatory (MaNGA)–Arizona Radio Observatory (ARO) Survey of CO Targets (MASCOT), a European Southern Observatory public spectroscopic survey conducted at the ARO. We measure the CO(1–0) line emission in a sample of 187 nearby galaxies selected from the MaNGA survey that has obtained integral field unit (IFU) spectroscopy for a sample of ~10 000 galaxies at low redshift. The main goal of MASCOT is to probe the molecular gas content of star-forming galaxies with stellar masses >10^9.5 M_⊙ and with associated MaNGA IFU observations and well-constrained quantities like stellar masses, star formation rates, and metallicities. In this paper, we present the first results of the MASCOT survey, providing integrated CO(1–0) measurements that cover several effective radii of the galaxy and present CO luminosities, CO kinematics, and estimated H₂ gas masses. We observe that the decline of the galaxy star formation rate with respect to the star formation main sequence increases with the decrease of molecular gas and with a reduced star formation efficiency, in agreement with results of other integrated studies. Relating the molecular gas mass fractions with the slope of the stellar age gradients inferred from the MaNGA observations, we find that galaxies with lower molecular gas mass fractions tend to show older stellar populations close to the galactic centre, while the opposite is true for galaxies with higher molecular gas mass fractions, providing tentative evidence for inside-out quenching.

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Research Organization:: US Department of Energy (USDOE), Washington, DC (United States). Office of Science, Sloan Digital Sky Survey (SDSS)

Sponsoring Organization:: USDOE

Contributing Organization:: Sloan Digital Sky Survey (SDSS)

OSTI ID:: 1982562

Journal Information:: Monthly Notices of the Royal Astronomical Society, Journal Name: Monthly Notices of the Royal Astronomical Society Journal Issue: 3 Vol. 510; ISSN 0035-8711

Publisher:: Oxford University PressCopyright Statement

Country of Publication:: United States

Language:: English

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Title: MASCOT: an ESO–ARO legacy survey of molecular gas in nearby SDSS-MaNGA galaxies - I. First data release, and global and resolved relations between H₂ and stellar content