The SAMI Galaxy Survey: Spatially Resolving the Main Sequence of Star Formation
We present the ~800 star formation rate maps for the SAMI Galaxy Survey based on Hα emission maps, corrected for dust attenuation via the Balmer decrement, that are included in the SAMI Public Data Release 1. We mask out spaxels contaminated by non-stellar emission using the [O III]/Hβ, [N II]/Hα, [...
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ftdatacite:10.48550/arxiv.1801.04283 2023-05-15T18:11:05+02:00 The SAMI Galaxy Survey: Spatially Resolving the Main Sequence of Star Formation Medling, Anne M. Cortese, Luca Croom, Scott M. Green, Andrew W. Groves, Brent Hampton, Elise Ho, I-Ting Davies, Luke J. M. Kewley, Lisa J. Moffett, Amanda J. Schaefer, Adam L. Taylor, Edward Zafar, Tayyaba Bekki, Kenji Bland-Hawthorn, Joss Bloom, Jessica V. Brough, Sarah Bryant, Julia J. Catinella, Barbara Cecil, Gerald Colless, Matthew Couch, Warrick J. Drinkwater, Michael J. Driver, Simon P. Federrath, Christoph Foster, Caroline Goldstein, Gregory Goodwin, Michael Hopkins, Andrew Lawrence, J. S. Leslie, Sarah K. Lewis, Geraint F. Lorente, Nuria P. F. Owers, Matt S. McDermid, Richard Richards, Samuel N. Sharp, Robert Scott, Nicholas Sweet, Sarah M. Taranu, Dan S. Tescari, Edoardo Tonini, Chiara van de Sande, Jesse Walcher, C. Jakob Wright, Angus 2018 https://dx.doi.org/10.48550/arxiv.1801.04283 https://arxiv.org/abs/1801.04283 unknown arXiv https://dx.doi.org/10.1093/mnras/sty127 arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ Astrophysics of Galaxies astro-ph.GA FOS Physical sciences article-journal Article ScholarlyArticle Text 2018 ftdatacite https://doi.org/10.48550/arxiv.1801.04283 https://doi.org/10.1093/mnras/sty127 2022-04-01T09:57:23Z We present the ~800 star formation rate maps for the SAMI Galaxy Survey based on Hα emission maps, corrected for dust attenuation via the Balmer decrement, that are included in the SAMI Public Data Release 1. We mask out spaxels contaminated by non-stellar emission using the [O III]/Hβ, [N II]/Hα, [S II]/Hα, and [O I]/Hα line ratios. Using these maps, we examine the global and resolved star-forming main sequences of SAMI galaxies as a function of morphology, environmental density, and stellar mass. Galaxies further below the star-forming main sequence are more likely to have flatter star formation profiles. Early-type galaxies split into two populations with similar stellar masses and central stellar mass surface densities. The main sequence population has centrally-concentrated star formation similar to late-type galaxies, while galaxies >3σ below the main sequence show significantly reduced star formation most strikingly in the nuclear regions. The split populations support a two-step quenching mechanism, wherein halo mass first cuts off the gas supply and remaining gas continues to form stars until the local stellar mass surface density can stabilize the reduced remaining fuel against further star formation. Across all morphologies, galaxies in denser environments show a decreased specific star formation rate from the outside in, supporting an environmental cause for quenching, such as ram-pressure stripping or galaxy interactions. : accepted to MNRAS Text sami DataCite Metadata Store (German National Library of Science and Technology) |
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DataCite Metadata Store (German National Library of Science and Technology) |
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Astrophysics of Galaxies astro-ph.GA FOS Physical sciences |
spellingShingle |
Astrophysics of Galaxies astro-ph.GA FOS Physical sciences Medling, Anne M. Cortese, Luca Croom, Scott M. Green, Andrew W. Groves, Brent Hampton, Elise Ho, I-Ting Davies, Luke J. M. Kewley, Lisa J. Moffett, Amanda J. Schaefer, Adam L. Taylor, Edward Zafar, Tayyaba Bekki, Kenji Bland-Hawthorn, Joss Bloom, Jessica V. Brough, Sarah Bryant, Julia J. Catinella, Barbara Cecil, Gerald Colless, Matthew Couch, Warrick J. Drinkwater, Michael J. Driver, Simon P. Federrath, Christoph Foster, Caroline Goldstein, Gregory Goodwin, Michael Hopkins, Andrew Lawrence, J. S. Leslie, Sarah K. Lewis, Geraint F. Lorente, Nuria P. F. Owers, Matt S. McDermid, Richard Richards, Samuel N. Sharp, Robert Scott, Nicholas Sweet, Sarah M. Taranu, Dan S. Tescari, Edoardo Tonini, Chiara van de Sande, Jesse Walcher, C. Jakob Wright, Angus The SAMI Galaxy Survey: Spatially Resolving the Main Sequence of Star Formation |
topic_facet |
Astrophysics of Galaxies astro-ph.GA FOS Physical sciences |
description |
We present the ~800 star formation rate maps for the SAMI Galaxy Survey based on Hα emission maps, corrected for dust attenuation via the Balmer decrement, that are included in the SAMI Public Data Release 1. We mask out spaxels contaminated by non-stellar emission using the [O III]/Hβ, [N II]/Hα, [S II]/Hα, and [O I]/Hα line ratios. Using these maps, we examine the global and resolved star-forming main sequences of SAMI galaxies as a function of morphology, environmental density, and stellar mass. Galaxies further below the star-forming main sequence are more likely to have flatter star formation profiles. Early-type galaxies split into two populations with similar stellar masses and central stellar mass surface densities. The main sequence population has centrally-concentrated star formation similar to late-type galaxies, while galaxies >3σ below the main sequence show significantly reduced star formation most strikingly in the nuclear regions. The split populations support a two-step quenching mechanism, wherein halo mass first cuts off the gas supply and remaining gas continues to form stars until the local stellar mass surface density can stabilize the reduced remaining fuel against further star formation. Across all morphologies, galaxies in denser environments show a decreased specific star formation rate from the outside in, supporting an environmental cause for quenching, such as ram-pressure stripping or galaxy interactions. : accepted to MNRAS |
format |
Text |
author |
Medling, Anne M. Cortese, Luca Croom, Scott M. Green, Andrew W. Groves, Brent Hampton, Elise Ho, I-Ting Davies, Luke J. M. Kewley, Lisa J. Moffett, Amanda J. Schaefer, Adam L. Taylor, Edward Zafar, Tayyaba Bekki, Kenji Bland-Hawthorn, Joss Bloom, Jessica V. Brough, Sarah Bryant, Julia J. Catinella, Barbara Cecil, Gerald Colless, Matthew Couch, Warrick J. Drinkwater, Michael J. Driver, Simon P. Federrath, Christoph Foster, Caroline Goldstein, Gregory Goodwin, Michael Hopkins, Andrew Lawrence, J. S. Leslie, Sarah K. Lewis, Geraint F. Lorente, Nuria P. F. Owers, Matt S. McDermid, Richard Richards, Samuel N. Sharp, Robert Scott, Nicholas Sweet, Sarah M. Taranu, Dan S. Tescari, Edoardo Tonini, Chiara van de Sande, Jesse Walcher, C. Jakob Wright, Angus |
author_facet |
Medling, Anne M. Cortese, Luca Croom, Scott M. Green, Andrew W. Groves, Brent Hampton, Elise Ho, I-Ting Davies, Luke J. M. Kewley, Lisa J. Moffett, Amanda J. Schaefer, Adam L. Taylor, Edward Zafar, Tayyaba Bekki, Kenji Bland-Hawthorn, Joss Bloom, Jessica V. Brough, Sarah Bryant, Julia J. Catinella, Barbara Cecil, Gerald Colless, Matthew Couch, Warrick J. Drinkwater, Michael J. Driver, Simon P. Federrath, Christoph Foster, Caroline Goldstein, Gregory Goodwin, Michael Hopkins, Andrew Lawrence, J. S. Leslie, Sarah K. Lewis, Geraint F. Lorente, Nuria P. F. Owers, Matt S. McDermid, Richard Richards, Samuel N. Sharp, Robert Scott, Nicholas Sweet, Sarah M. Taranu, Dan S. Tescari, Edoardo Tonini, Chiara van de Sande, Jesse Walcher, C. Jakob Wright, Angus |
author_sort |
Medling, Anne M. |
title |
The SAMI Galaxy Survey: Spatially Resolving the Main Sequence of Star Formation |
title_short |
The SAMI Galaxy Survey: Spatially Resolving the Main Sequence of Star Formation |
title_full |
The SAMI Galaxy Survey: Spatially Resolving the Main Sequence of Star Formation |
title_fullStr |
The SAMI Galaxy Survey: Spatially Resolving the Main Sequence of Star Formation |
title_full_unstemmed |
The SAMI Galaxy Survey: Spatially Resolving the Main Sequence of Star Formation |
title_sort |
sami galaxy survey: spatially resolving the main sequence of star formation |
publisher |
arXiv |
publishDate |
2018 |
url |
https://dx.doi.org/10.48550/arxiv.1801.04283 https://arxiv.org/abs/1801.04283 |
genre |
sami |
genre_facet |
sami |
op_relation |
https://dx.doi.org/10.1093/mnras/sty127 |
op_rights |
arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ |
op_doi |
https://doi.org/10.48550/arxiv.1801.04283 https://doi.org/10.1093/mnras/sty127 |
_version_ |
1766183790868168704 |