Investigating the link between inner gravitational potential and star-formation quenching in CALIFA galaxies
Por:
Kalinova, V, Colombo, D., Sanchez, S. F., Rosolowsky, E., Kodaira, K., Garcia-Benito, R., Meidt, S. E., Davis, T. A., Romeo, A. B., Yu, S-Y, Delgado, R. Gonzalez, Lacerda, E. A. D.
Publicada:
13 sep 2022
Resumen:
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.
Filiaciones:
Kalinova, V:
(Corresponding Author), Max Planck Inst Radioastron, Hugel 69, D-53121 Bonn, Germany
Max Planck Inst Radioastron, Hugel 69, D-53121 Bonn, Germany
Colombo, D.:
Max Planck Inst Radioastron, Hugel 69, D-53121 Bonn, Germany
Sanchez, S. F.:
Univ Nacl Autonoma Mexico, Inst Astron, AP 70-264, Mexico City 04510, DF, Mexico
Rosolowsky, E.:
Univ Alberta, Dept Phys 4 181 CCIS, Edmonton, AB T6G 2E1, Canada
Kodaira, K.:
Max Planck Inst Radioastron, Hugel 69, D-53121 Bonn, Germany
Natl Astron Observ Japan, Osawa2-21-1, Mitaka, Tokyo 1818588, Japan
SOKENDAI, Int Village, Hayama, Kanagawa 2400193, Japan
Garcia-Benito, R.:
CSIC, Inst Astrofis Andalucia, Apartado Correos 3004, Granada 18080, Spain
Meidt, S. E.:
Univ Ghent, Sterrenkundig Observ, Krijgslaan 281 S9, B-9000 Ghent, Belgium
Davis, T. A.:
Cardiff Univ, Sch Phys & Astron, Queens Bldg, Cardiff CF24 3AA, Wales
Romeo, A. B.:
Chalmers Univ Technol, Dept Space Earth & Environm, S-41296 Gothenburg, Sweden
Yu, S-Y:
Max Planck Inst Radioastron, Hugel 69, D-53121 Bonn, Germany
Delgado, R. Gonzalez:
CSIC, Inst Astrofis Andalucia, Apartado Correos 3004, Granada 18080, Spain
Lacerda, E. A. D.:
Univ Nacl Autonoma Mexico, Inst Astron, AP 70-264, Mexico City 04510, DF, Mexico
Green Submitted, hybrid, Hybrid Gold
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