Atmospheric pressure and molecular cloud formation in early-type galaxies
arXiv:2110.15410 · doi:10.3847/1538-4357/acb53f
Abstract
A strong correlation between atmospheric pressure and molecular gas mass is found in central cluster galaxies and early-type galaxies. This trend and a similar trend with atmospheric gas density would naturally arise if the molecular clouds condensed from hot atmospheres. Limits on the ratio of molecular to atomic hydrogen in these systems exceed unity. The data are consistent with ambient pressure being a significant factor in the rapid conversion of atomic hydrogen into molecules as found in normal spiral galaxies.
7 pages, 4 figures
References in corpus (15)
- Cold streams in early massive hot haloes as the main mode of galaxy formation
- The hierarchical formation of the brightest cluster galaxies
- Some Aspects of Measurement Error in Linear Regression of Astronomical Data
- Heating Hot Atmospheres with Active Galactic Nuclei
- A unified model for AGN feedback in cosmological simulations of structure formation
- The Role of Pressure in GMC Formation II: The H_2 - Pressure Relation
- The Search for the Missing Baryons at Low Redshift
- Molecular Hydrogen and Global Star Formation Relations in Galaxies
- The Atomic to Molecular Transition in Galaxies. I: An Analytic Approximation for Photodissociation Fronts in Finite Clouds
- Cold molecular gas in the Perseus cluster core - Association with X-ray cavity, Halpha filaments and cooling flow -
- Molecular Gas and Star Formation in the SAURON Early-type Galaxies
- Hot Atmospheres, Cold Gas, AGN Feedback and the Evolution of Early Type Galaxies: a Topical Perspective
- A new all-sky map of Galactic high-velocity clouds from the 21-cm HI4PI survey
- OVI Observations of Galaxy Clusters: Evidence for Modest Cooling Flows
- Redshift Evolution of the H2/HI Mass Ratio In Galaxies