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More insights into bar quenching: Multi-wavelength analysis of four barred galaxies

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dc.contributor.author George, K
dc.contributor.author Joseph, P
dc.contributor.author Mondal, C
dc.contributor.author Subramanian, S
dc.contributor.author Subramaniam, A
dc.contributor.author Paul, K. T
dc.date.accessioned 2021-02-14T06:39:54Z
dc.date.available 2021-02-14T06:39:54Z
dc.date.issued 2020-12
dc.identifier.citation Astronomy & Astrophysics, Vol. 644, A79 en_US
dc.identifier.issn 0004-6361
dc.identifier.uri http://hdl.handle.net/2248/7653
dc.description Open Access © ESO https://doi.org/10.1051/0004-6361/202038810 en_US
dc.description.abstract The underlying nature of the process of star formation quenching in the central regions of barred disc galaxies that is due to the action of stellar bar is not fully understood. We present a multi-wavelength study of four barred galaxies using the archival data from optical, ultraviolet, infrared, CO, and HI imaging data on star formation progression and stellar and gas distribution to better understand the process of bar quenching. We found that for three galaxies, the region between the nuclear or central sub-kiloparsec region and the end of the bar (bar region) is devoid of neutral and molecular hydrogen. While the detected neutral hydrogen is very negligible, we note that molecular hydrogen is present abundantly in the nuclear or central sub-kiloparsec regions of all four galaxies. The bar co-rotation radius is also devoid of recent star formation for three out of four galaxies. One galaxy shows significant molecular hydrogen along the bar, which might mean that the gas is still being funnelled to the centre by the action of the stellar bar. Significant star formation is also present along the bar co-rotation radius of this galaxy. The study presented here supports a scenario in which gas redistribution as a result of the action of stellar bar clears the bar region of fuel for further star formation and eventually leads to star formation quenching in the bar region. en_US
dc.language.iso en en_US
dc.publisher EDP Sciences en_US
dc.subject galaxies: star formation en_US
dc.subject galaxies: evolution en_US
dc.subject galaxies: formation en_US
dc.subject ultraviolet: galaxies en_US
dc.title More insights into bar quenching: Multi-wavelength analysis of four barred galaxies en_US
dc.type Article en_US

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