Rights statement: This is a pre-copy-editing, author-produced PDF of an article accepted for publication in Monthly Notices of the Royal Astronomical Society following peer review. The definitive publisher-authenticated version Dominic Smith, Lutz Haberzettl, L E Porter, Ren Porter-Temple, Christopher P A Henry, Benne Holwerda, Á R López-Sánchez, Steven Phillipps, Alister W Graham, Sarah Brough, Kevin A Pimbblet, Jochen Liske, Lee S Kelvin, Clayton D Robertson, Wade Roemer, Michael Walmsley, David O’Ryan, Tobias Géron, Galaxy And Mass Assembly: galaxy morphology in the green valley, prominent rings, and looser spiral arms, Monthly Notices of the Royal Astronomical Society, Volume 517, Issue 3, December 2022, Pages 4575–4589, https://doi.org/10.1093/mnras/stac2258 is available online at: https://academic.oup.com/mnras/article-abstract/517/3/4575/6795245
Accepted author manuscript, 1.47 MB, PDF document
Available under license: CC BY-NC: Creative Commons Attribution-NonCommercial 4.0 International License
Final published version, 3.37 MB, PDF document
Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Galaxy And Mass Assembly
T2 - galaxy morphology in the green valley, prominent rings, and looser spiral arms
AU - Smith, Dominic
AU - Haberzettl, Lutz
AU - Porter, L E
AU - Porter-Temple, Ren
AU - Henry, Christopher P A
AU - Holwerda, Benne
AU - López-Sánchez, Á R
AU - Phillipps, Steven
AU - Graham, Alister W
AU - Brough, Sarah
AU - Pimbblet, Kevin A
AU - Liske, Jochen
AU - Kelvin, Lee S
AU - Robertson, Clayton D
AU - Roemer, Wade
AU - Walmsley, Michael
AU - O’Ryan, David
AU - Géron, Tobias
N1 - This is a pre-copy-editing, author-produced PDF of an article accepted for publication in Monthly Notices of the Royal Astronomical Society following peer review. The definitive publisher-authenticated version Dominic Smith, Lutz Haberzettl, L E Porter, Ren Porter-Temple, Christopher P A Henry, Benne Holwerda, Á R López-Sánchez, Steven Phillipps, Alister W Graham, Sarah Brough, Kevin A Pimbblet, Jochen Liske, Lee S Kelvin, Clayton D Robertson, Wade Roemer, Michael Walmsley, David O’Ryan, Tobias Géron, Galaxy And Mass Assembly: galaxy morphology in the green valley, prominent rings, and looser spiral arms, Monthly Notices of the Royal Astronomical Society, Volume 517, Issue 3, December 2022, Pages 4575–4589, https://doi.org/10.1093/mnras/stac2258 is available online at: https://academic.oup.com/mnras/article-abstract/517/3/4575/6795245
PY - 2022/12/31
Y1 - 2022/12/31
N2 - Galaxies fall broadly into two categories: star-forming (blue) galaxies and quiescent (red) galaxies. In between, one finds the less populated ‘green valley’. Some of these galaxies are suspected to be in the process of ceasing their star formation through a gradual exhaustion of gas supply, or already dead and experiencing a rejuvenation of star formation through fuel injection. We use the Galaxy And Mass Assembly (GAMA) database and the Galaxy Zoo citizen science morphological estimates to compare the morphology of galaxies in the green valley with those in the red sequence and blue cloud. Our goal is to examine the structural differences within galaxies that fall in the green valley, and what brings them there. Previous results found that disc features such as rings and lenses are more prominently represented in the green-valley population. We revisit this with a similar sized data set of galaxies with morphology labels provided by the Galaxy Zoo for the GAMA fields based on new Kilo-Degree Survey (KiDS) images. Our aim is to compare the results from expert classification qualitatively with those of citizen science. We observe that ring structures are indeed found more commonly in green-valley galaxies compared with their red and blue counterparts. We suggest that ring structures are a consequence of disc galaxies in the green valley actively exhibiting the characteristics of fading discs and evolving disc morphology of galaxies. We note that the progression from blue to red correlates with loosening spiral-arm structure.
AB - Galaxies fall broadly into two categories: star-forming (blue) galaxies and quiescent (red) galaxies. In between, one finds the less populated ‘green valley’. Some of these galaxies are suspected to be in the process of ceasing their star formation through a gradual exhaustion of gas supply, or already dead and experiencing a rejuvenation of star formation through fuel injection. We use the Galaxy And Mass Assembly (GAMA) database and the Galaxy Zoo citizen science morphological estimates to compare the morphology of galaxies in the green valley with those in the red sequence and blue cloud. Our goal is to examine the structural differences within galaxies that fall in the green valley, and what brings them there. Previous results found that disc features such as rings and lenses are more prominently represented in the green-valley population. We revisit this with a similar sized data set of galaxies with morphology labels provided by the Galaxy Zoo for the GAMA fields based on new Kilo-Degree Survey (KiDS) images. Our aim is to compare the results from expert classification qualitatively with those of citizen science. We observe that ring structures are indeed found more commonly in green-valley galaxies compared with their red and blue counterparts. We suggest that ring structures are a consequence of disc galaxies in the green valley actively exhibiting the characteristics of fading discs and evolving disc morphology of galaxies. We note that the progression from blue to red correlates with loosening spiral-arm structure.
KW - Space and Planetary Science
KW - Astronomy and Astrophysics
U2 - 10.1093/mnras/stac2258
DO - 10.1093/mnras/stac2258
M3 - Journal article
VL - 517
SP - 4575
EP - 4589
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
SN - 0035-8711
IS - 3
ER -