Investigating the link between inner gravitational potential and star-formation quenching in CALIFA galaxies
Journal article, 2022

It has been suggested that gravitational potential can have a significant role in suppressing star formation in nearby galaxies. To establish observational constraints on this scenario, we investigated the connection between the dynamics - taking the circular velocity curves (CVCs) as a proxy for the inner gravitational potential - and star formation quenching in 215 non-active galaxies across the Hubble sequence from the Calar Alto Legacy Integral Field Area (CALIFA) survey. Our results show that galaxies with similar CVCs tend to have a certain star-formation quenching pattern. To explore these findings in more details, we constructed kiloparsec (kpc) resolved relations of the equivalent width of the H alpha (W-H alpha) versus the amplitude (V-c) and shape (beta = dln V-c/d ln R) of the circular velocity at given radii. We find that the W-H alpha V-c is a declining relationship, where the retired regions of the galaxies (the ones with W-H alpha values of below 3 angstrom) tend to have higher V-c. Concurrently, W-H alpha-beta is a bimodal relationship, which is characterised by two peaks: concentration of the star forming regions at a positive beta (rising CVC) and a second concentration of the retired regions with a negative beta (declining CVC). Our results show that both the amplitude of the CVC - driven by the mass of the galaxies - and its shape - which reflects the internal structure of the galaxies - play an important role in the quenching history of a galaxy.

galaxies: star formation

galaxies: fundamental parameters

galaxies: bulges

galaxies: evolution

galaxies: kinematics and dynamics

galaxies: structure

Author

V Kalinova

Max Planck Society

D. Colombo

Max Planck Society

S. F. Sanchez

Universidad Nacional Autónoma de México

E. Rosolowsky

University of Alberta

K. Kodaira

National Astronomical Observatory of Japan

Max Planck Society

The Graduate University for Advanced Studies (SOKENDAI)

R. Garcia-Benito

Spanish National Research Council (CSIC)

S. E. Meidt

Ghent university

T. A. Davis

Cardiff University

Alessandro Romeo

Chalmers, Space, Earth and Environment, Astronomy and Plasmaphysics

S-Y Yu

Max Planck Society

R. Gonzalez Delgado

Spanish National Research Council (CSIC)

E. A. D. Lacerda

Universidad Nacional Autónoma de México

Astronomy and Astrophysics

0004-6361 (ISSN) 1432-0746 (eISSN)

Vol. 665 A90

Subject Categories

Biochemistry and Molecular Biology

Astronomy, Astrophysics and Cosmology

Economic Geography

DOI

10.1051/0004-6361/202243541

More information

Latest update

10/3/2022