TY - JOUR
T1 - The EDGE-CALIFA survey
T2 - Central molecular gas depletion in AGN host galaxies - A smoking gun for quenching?
AU - Ellison, Sara L.
AU - Wong, Tony
AU - Sánchez, Sebastian F.
AU - Colombo, Dario
AU - Bolatto, Alberto
AU - Barrera-Ballesteros, Jorge
AU - García-Benito, Rubén
AU - Kalinova, Veselina
AU - Luo, Yufeng
AU - Rubio, Monica
AU - Vogel, Stuart N.
N1 - The authors acknowledge an NSERC Discovery Grant (SLE), NSF AST-1616199 (TW), support by the Deutsche Forschungsgemeinschaft project number SFB956A (DC), NSF AST-1615960 (AB, SNV), PID2019-109067GB-I00, P18-FRJ-2595, SEV-2017-0709 (RGB), IA-100420, IN100519, CF19-39578, CB-285080, and FC- 2016-01-1916 (SFS and JBB),and Fondecyt grant number 1190684 (MR). Support for CARMA construction was derived from the Gordon and Betty Moore Foundation, the Eileen and Kenneth Norris Foundation, the Caltech Associates, the states of California, Illinois, and Maryland, and the NSF. Funding for CARMA development and operations was supported by NSF and the CARMA partner universities. We acknowledge the usage of the HyperLeda data base (http://leda.univ-lyon1.fr).
PY - 2021/7/1
Y1 - 2021/7/1
N2 - Feedback from an active galactic nucleus (AGN) is often implicated as a mechanism that leads to the quenching of galactic star formation. However, AGN-driven quenching is challenging to reconcile with observations that AGN hosts tend to harbour equal (or even excess) amounts of gas compared with inactive galaxies of similar stellar mass. In this paper, we investigate whether AGN feedback happens on sub-galactic (kpc) scales, an effect that might be difficult to detect with global gas measurements. Using kpc-scale measurements of molecular gas (ΣH2) and stellar mass (Σ∗) surface densities, taken from the Extragalactic Data base for Galaxy Evolution-Calar Alto Legacy Integral Field Area survey, we show that the gas fractions of central AGN regions are typically a factor of ∼2 lower than those in star-forming regions. Based on four galaxies with the best spaxel statistics, the difference between AGN and star-forming gas fractions is seen even within a given galaxy, indicating that AGN feedback is able to deplete the molecular gas reservoir in the central few kpc.
AB - Feedback from an active galactic nucleus (AGN) is often implicated as a mechanism that leads to the quenching of galactic star formation. However, AGN-driven quenching is challenging to reconcile with observations that AGN hosts tend to harbour equal (or even excess) amounts of gas compared with inactive galaxies of similar stellar mass. In this paper, we investigate whether AGN feedback happens on sub-galactic (kpc) scales, an effect that might be difficult to detect with global gas measurements. Using kpc-scale measurements of molecular gas (ΣH2) and stellar mass (Σ∗) surface densities, taken from the Extragalactic Data base for Galaxy Evolution-Calar Alto Legacy Integral Field Area survey, we show that the gas fractions of central AGN regions are typically a factor of ∼2 lower than those in star-forming regions. Based on four galaxies with the best spaxel statistics, the difference between AGN and star-forming gas fractions is seen even within a given galaxy, indicating that AGN feedback is able to deplete the molecular gas reservoir in the central few kpc.
KW - Galaxies: ISM
KW - Galaxies: active
KW - Galaxies: evolution
UR - https://www.scopus.com/pages/publications/85107845911
UR - https://www.scopus.com/pages/publications/85107845911#tab=citedBy
U2 - 10.1093/mnrasl/slab047
DO - 10.1093/mnrasl/slab047
M3 - Article
AN - SCOPUS:85107845911
SN - 1745-3925
VL - 505
SP - L46-L51
JO - Monthly Notices of the Royal Astronomical Society: Letters
JF - Monthly Notices of the Royal Astronomical Society: Letters
IS - 1
ER -