TY - JOUR
T1 - The EDGE-CALIFA Survey
T2 - influence of mergers on radial profiles of star-formation properties
AU - Garay-Solis, Y.
AU - Barrera-Ballesteros, J. K.
AU - Carigi, L.
AU - Colombo, D.
AU - Sánchez, S. F.
AU - Lugo-Aranda, A. Z.
AU - Villanueva, V.
AU - Wong, T.
AU - Bolatto, A. D.
N1 - This work was funded in part by NSF AAG grants 2307440 to the University of Illinois and 2307441 to the University of Maryland. DC gratefully acknowledges the Collaborative Research Center 1601 (SFB 1601 sub-project B3) funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) – 500700252. VV acknowledges support from the ANID BASAL project FB210003 and from ANID–MILENIO-NCN2024_112. AZLA gratefully acknowledges the support provided by the Postdoctoral Program (POSDOC) of UNAM (Universidad Nacional Autónoma de México). LC thanks the support by SECIHTI (Secretaría de Ciencia, Humanidades, Tecnología e Innovación, México) CBF-2025-I-2048 project.
YG-S and JB-B acknowledge support from grant AG-101025 (DGAPA-PAPIIT, Universidad Nacional Autónoma de México). JB-B acknowledges support from the DGAPA-PASPA 2025 fellowship (Universidad Nacional Autónoma de México).
YG-S and JB-B acknowledge support from grant AG-101025 (DGAPA-PAPIIT, Universidad Nacional Autónoma de México). JB-B acknowledges support from the DGAPA-PASPA 2025 fellowship (Universidad Nacional Autónoma de México).This work was funded in part by NSF AAG grants 2307440 to the University of Illinois and 2307441 to the University of Maryland. DC gratefully acknowledges the Collaborative Research Center 1601 (SFB 1601 sub-project B3) funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) – 500700252. VV acknowledges support from the ANID BASAL project FB210003 and from ANID–MILENIO-NCN2024_112. AZLA gratefully acknowledges the support provided by the Postdoctoral Program (POSDOC) of UNAM (Universidad Nacional Autónoma de México). LC thanks the support by SECIHTI (Secretaría de Ciencia, Humanidades, Tecnología e Innovación, México) CBF-2025-I-2048 project.
PY - 2025/11/1
Y1 - 2025/11/1
N2 - In this study, we investigate how the merging process influences the radial variations of the specific star formation rate, star formation efficiency, and molecular gas fraction (fmol) in galaxies. We analyse 33 isolated galaxies and 34 galaxies in four different merger stages from pairs, merging galaxies, post-mergers, and merger remnants. Our sample is included in the EDGE-CALIFA survey, which provides spatially resolved optical integral-field unit and CO spectroscopy data. We show that, in comparison with the isolated sample, the mergers increase the molecular gas fraction non-uniformly across different galactocentric distances. Also, we find that the main driver (efficiency or molecular gas) of both enhanced and suppressed star formation changes independently of galactocentric radius and merger stage. However, efficiency appears to be the primary driver of variations in star formation (except during the merging stage), where we find an enhancement in star formation driven by the available fuel. Our results suggest that in interacting and merging galaxies, the efficiency plays a crucial role in the star formation variations throughout the galaxy, regardless of the available molecular gas content.
AB - In this study, we investigate how the merging process influences the radial variations of the specific star formation rate, star formation efficiency, and molecular gas fraction (fmol) in galaxies. We analyse 33 isolated galaxies and 34 galaxies in four different merger stages from pairs, merging galaxies, post-mergers, and merger remnants. Our sample is included in the EDGE-CALIFA survey, which provides spatially resolved optical integral-field unit and CO spectroscopy data. We show that, in comparison with the isolated sample, the mergers increase the molecular gas fraction non-uniformly across different galactocentric distances. Also, we find that the main driver (efficiency or molecular gas) of both enhanced and suppressed star formation changes independently of galactocentric radius and merger stage. However, efficiency appears to be the primary driver of variations in star formation (except during the merging stage), where we find an enhancement in star formation driven by the available fuel. Our results suggest that in interacting and merging galaxies, the efficiency plays a crucial role in the star formation variations throughout the galaxy, regardless of the available molecular gas content.
KW - galaxies: evolution
KW - galaxies: interactions
KW - galaxies: ISM
KW - galaxies: star formation
UR - https://www.scopus.com/pages/publications/105019745259
UR - https://www.scopus.com/pages/publications/105019745259#tab=citedBy
U2 - 10.1093/mnras/staf1653
DO - 10.1093/mnras/staf1653
M3 - Article
AN - SCOPUS:105019745259
SN - 0035-8711
VL - 543
SP - 4144
EP - 4155
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 4
ER -