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   <ow:Publication rdf:about="oai:digibug.ugr.es:10481/93516">
      <dc:title>CO Observations of Early-mid Stage Major Mergers in the MaNGA Survey</dc:title>
      <dc:creator>Yu, Qingzheng</dc:creator>
      <dc:creator>Fang, Taotao</dc:creator>
      <dc:creator>Xu, Cong Kevin</dc:creator>
      <dc:creator>Feng, Shuai</dc:creator>
      <dc:creator>Feng, Siyi</dc:creator>
      <dc:creator>Gao, Yu</dc:creator>
      <dc:creator>Jiang, Xue-Jian</dc:creator>
      <dc:creator>Lisenfeld, Ute</dc:creator>
      <dc:description>We present a study of the molecular gas in early-mid stage major mergers, with a sample of 43 major-merger&#xd;
galaxy pairs selected from the Mapping Nearby Galaxies at Apache Point Observatory survey and a control sample&#xd;
of 195 isolated galaxies selected from the xCOLD GASS survey. Adopting kinematic asymmetry as a new&#xd;
effective indicator to describe the merger stage, we aim to study the role of molecular gas in the merger-induced&#xd;
star formation enhancement along the merger sequence of galaxy pairs. We obtain the molecular gas properties&#xd;
from CO observations with the James Clerk Maxwell Telescope, Institut de Radioastronomie Milimetrique 30 m&#xd;
telescope, and the MaNGA-ARO Survey of CO Targets survey. Using these data, we investigate the differences in&#xd;
molecular gas fraction ( fH2), star formation rate (SFR), star formation efficiency (SFE), molecular-to-atomic gas&#xd;
ratio (MH2/MH I), total gas fraction ( fgas), and the SFE of total gas (SFEgas) between the pair and control samples. In&#xd;
the full pair sample, our results suggest the fH2 of paired galaxies is significantly enhanced, while the SFE is&#xd;
comparable to that of isolated galaxies. We detect significantly increased fH2 and MH2/MH I in paired galaxies at the&#xd;
pericenter stage, indicating an accelerated transition from atomic gas to molecular gas due to interactions. Our&#xd;
results indicate that the elevation of fH2 plays a major role in the enhancement of global SFR in paired galaxies at&#xd;
the pericenter stage, while the contribution of enhanced SFE in specific regions requires further explorations&#xd;
through spatially resolved observations of a larger sample spanning a wide range of merger stages.</dc:description>
      <dc:date>2024-07-26T10:10:44Z</dc:date>
      <dc:date>2024-07-26T10:10:44Z</dc:date>
      <dc:date>2024-06-18</dc:date>
      <dc:type>journal article</dc:type>
      <dc:identifier>Yu, Q. et. al. The Astrophysical Journal Supplement Series, 273:2 (22pp). [https://doi.org/10.3847/1538-4365/ad4547]</dc:identifier>
      <dc:identifier>https://hdl.handle.net/10481/93516</dc:identifier>
      <dc:identifier>10.3847/1538-4365/ad4547</dc:identifier>
      <dc:language>eng</dc:language>
      <dc:rights>http://creativecommons.org/licenses/by/4.0/</dc:rights>
      <dc:rights>open access</dc:rights>
      <dc:rights>Atribución 4.0 Internacional</dc:rights>
      <dc:publisher>IOP Publishing</dc:publisher>
   </ow:Publication>
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