The MaNGA Low-mass disks HUnt for CO (MaLHUCO) Survey
M. Grossi, E. Corbelli, D. R. Gon\c{c}alves, E. D. Paspaliaris

TL;DR
This study uses JCMT observations to analyze molecular gas in low-mass, star-forming disk galaxies, revealing correlations with star formation and interstellar medium properties, and testing scaling relations.
Contribution
First systematic CO(2-1) survey of low-mass, late-type galaxies from MaNGA, exploring molecular gas content and its relation to star formation and galaxy evolution.
Findings
CO detected in 55% of the sample.
12 μm luminosity correlates linearly with CO emission.
The Kennicutt-Schmidt law remains linear at low stellar masses.
Abstract
We present James Clerk Maxwell Telescope (JCMT) observations of the CO(J = 2-1) emission of 42 low-mass, star-forming disk galaxies of morphological type Scd or later from the Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) survey. The sample, which probes the M33-like stellar-mass regime, is complemented with metallicities, star formation rates, and \hi\ masses used to investigate the star formation process and to test scaling relations involving molecular gas mass in low-mass systems. We detect CO emission in 55% of the sample and derive H masses using both a constant Galactic and a metallicity-dependent CO-to-H conversion factor. The 12 m luminosity, which includes polycyclic aromatic hydrocarbon features, exhibits a tight linear correlation with the CO line emission, making it a robust tracer of global molecular gas content. The molecular gas mass -…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
