EMU/GAMA: Radio-detected galaxies are more obscured than optically selected galaxies
We demonstrate the importance of radio selection in probing heavily obscured galaxy populations. We combine Evolutionary Map of the Universe (EMU) Early Science data in the Galaxy and Mass Assembly (GAMA) G23 field with the GAMA data, providing optical photometry and spectral line measurements, toge...
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| Veröffentlicht in: | Publications of the Astronomical Society of Australia 2024-01, Vol.41, Article e021 |
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| creator | Ahmed, U. T. Hopkins, A. M. Ware, J. Gordon, Y. A. Bilicki, M. Brown, M. J. I. Cluver, M. Gürkan, G. López-Sánchez, Á. R. Leahy, D. A. Marchetti, L. Phillipps, S. Prandoni, I. Seymour, N. Taylor, E. N. Vardoulaki, E. |
| description | We demonstrate the importance of radio selection in probing heavily obscured galaxy populations. We combine Evolutionary Map of the Universe (EMU) Early Science data in the Galaxy and Mass Assembly (GAMA) G23 field with the GAMA data, providing optical photometry and spectral line measurements, together with Wide-field Infrared Survey Explorer (WISE) infrared (IR) photometry, providing IR luminosities and colours. We investigate the degree of obscuration in star-forming galaxies, based on the Balmer decrement (BD), and explore how this trend varies, over a redshift range of
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| doi_str_mv | 10.1017/pasa.2024.2 |
| format | Article |
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$0<z<0.345$
. We demonstrate that the radio-detected population has on average higher levels of obscuration than the parent optical sample, arising through missing the lowest BD and lowest mass galaxies, which are also the lower star formation rate (SFR) and metallicity systems. We discuss possible explanations for this result, including speculation around whether it might arise from steeper stellar initial mass functions in low mass, low SFR galaxies.</description><identifier>ISSN: 1323-3580</identifier><identifier>EISSN: 1448-6083</identifier><identifier>DOI: 10.1017/pasa.2024.2</identifier><language>eng</language><publisher>New York, USA: Cambridge University Press</publisher><ispartof>Publications of the Astronomical Society of Australia, 2024-01, Vol.41, Article e021</ispartof><rights>The Author(s), 2024. Published by Cambridge University Press on behalf of Astronomical Society of Australia</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c229t-d6648f6952e9e392566e1d9f1b04e5ab38416cb8b4ee3196755fe63f7828b5033</cites><orcidid>0000-0002-0309-1599 ; 0000-0002-1207-9137 ; 0000-0002-4814-958X</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.cambridge.org/core/product/identifier/S132335802400002X/type/journal_article$$EHTML$$P50$$Gcambridge$$Hfree_for_read</linktohtml><link.rule.ids>164,314,777,781,27905,27906,55609</link.rule.ids></links><search><creatorcontrib>Ahmed, U. T.</creatorcontrib><creatorcontrib>Hopkins, A. M.</creatorcontrib><creatorcontrib>Ware, J.</creatorcontrib><creatorcontrib>Gordon, Y. A.</creatorcontrib><creatorcontrib>Bilicki, M.</creatorcontrib><creatorcontrib>Brown, M. J. I.</creatorcontrib><creatorcontrib>Cluver, M.</creatorcontrib><creatorcontrib>Gürkan, G.</creatorcontrib><creatorcontrib>López-Sánchez, Á. R.</creatorcontrib><creatorcontrib>Leahy, D. A.</creatorcontrib><creatorcontrib>Marchetti, L.</creatorcontrib><creatorcontrib>Phillipps, S.</creatorcontrib><creatorcontrib>Prandoni, I.</creatorcontrib><creatorcontrib>Seymour, N.</creatorcontrib><creatorcontrib>Taylor, E. N.</creatorcontrib><creatorcontrib>Vardoulaki, E.</creatorcontrib><title>EMU/GAMA: Radio-detected galaxies are more obscured than optically selected galaxies</title><title>Publications of the Astronomical Society of Australia</title><addtitle>Publ. Astron. Soc. Aust</addtitle><description>We demonstrate the importance of radio selection in probing heavily obscured galaxy populations. We combine Evolutionary Map of the Universe (EMU) Early Science data in the Galaxy and Mass Assembly (GAMA) G23 field with the GAMA data, providing optical photometry and spectral line measurements, together with Wide-field Infrared Survey Explorer (WISE) infrared (IR) photometry, providing IR luminosities and colours. We investigate the degree of obscuration in star-forming galaxies, based on the Balmer decrement (BD), and explore how this trend varies, over a redshift range of
$0<z<0.345$
. We demonstrate that the radio-detected population has on average higher levels of obscuration than the parent optical sample, arising through missing the lowest BD and lowest mass galaxies, which are also the lower star formation rate (SFR) and metallicity systems. We discuss possible explanations for this result, including speculation around whether it might arise from steeper stellar initial mass functions in low mass, low SFR galaxies.</description><issn>1323-3580</issn><issn>1448-6083</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><sourceid>IKXGN</sourceid><recordid>eNptkE1Lw0AQhhdRsFZP_oHcZdP9zq63UmoVWgRpz8tuMqkpSRN2U7D_3oT2IniZGXifGYYHoWdKUkpoNutcdCkjTKTsBk2oEBorovntMHPGMZea3KOHGA-EUKEYm6DtcrObreab-Wvy5YqqxQX0kPdQJHtXu58KYuICJE07lNbH_BSGqP92x6Tt-ip3dX1OItR_Vx7RXenqCE_XPkW7t-V28Y7Xn6uPxXyNc8ZMjwulhC6VkQwMcMOkUkALU1JPBEjnuRZU5V57AcCpUZmUJSheZpppLwnnU_RyuZuHNsYApe1C1bhwtpTYUYgdhdhRiGUDja-0a3yoij3YQ3sKx-HDf_lfUl5ifg</recordid><startdate>20240117</startdate><enddate>20240117</enddate><creator>Ahmed, U. T.</creator><creator>Hopkins, A. M.</creator><creator>Ware, J.</creator><creator>Gordon, Y. A.</creator><creator>Bilicki, M.</creator><creator>Brown, M. J. I.</creator><creator>Cluver, M.</creator><creator>Gürkan, G.</creator><creator>López-Sánchez, Á. R.</creator><creator>Leahy, D. A.</creator><creator>Marchetti, L.</creator><creator>Phillipps, S.</creator><creator>Prandoni, I.</creator><creator>Seymour, N.</creator><creator>Taylor, E. N.</creator><creator>Vardoulaki, E.</creator><general>Cambridge University Press</general><scope>IKXGN</scope><scope>AAYXX</scope><scope>CITATION</scope><orcidid>https://orcid.org/0000-0002-0309-1599</orcidid><orcidid>https://orcid.org/0000-0002-1207-9137</orcidid><orcidid>https://orcid.org/0000-0002-4814-958X</orcidid></search><sort><creationdate>20240117</creationdate><title>EMU/GAMA: Radio-detected galaxies are more obscured than optically selected galaxies</title><author>Ahmed, U. T. ; Hopkins, A. M. ; Ware, J. ; Gordon, Y. A. ; Bilicki, M. ; Brown, M. J. I. ; Cluver, M. ; Gürkan, G. ; López-Sánchez, Á. R. ; Leahy, D. A. ; Marchetti, L. ; Phillipps, S. ; Prandoni, I. ; Seymour, N. ; Taylor, E. N. ; Vardoulaki, E.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c229t-d6648f6952e9e392566e1d9f1b04e5ab38416cb8b4ee3196755fe63f7828b5033</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ahmed, U. T.</creatorcontrib><creatorcontrib>Hopkins, A. M.</creatorcontrib><creatorcontrib>Ware, J.</creatorcontrib><creatorcontrib>Gordon, Y. A.</creatorcontrib><creatorcontrib>Bilicki, M.</creatorcontrib><creatorcontrib>Brown, M. J. I.</creatorcontrib><creatorcontrib>Cluver, M.</creatorcontrib><creatorcontrib>Gürkan, G.</creatorcontrib><creatorcontrib>López-Sánchez, Á. R.</creatorcontrib><creatorcontrib>Leahy, D. A.</creatorcontrib><creatorcontrib>Marchetti, L.</creatorcontrib><creatorcontrib>Phillipps, S.</creatorcontrib><creatorcontrib>Prandoni, I.</creatorcontrib><creatorcontrib>Seymour, N.</creatorcontrib><creatorcontrib>Taylor, E. N.</creatorcontrib><creatorcontrib>Vardoulaki, E.</creatorcontrib><collection>Cambridge Journals Open Access</collection><collection>CrossRef</collection><jtitle>Publications of the Astronomical Society of Australia</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ahmed, U. T.</au><au>Hopkins, A. M.</au><au>Ware, J.</au><au>Gordon, Y. A.</au><au>Bilicki, M.</au><au>Brown, M. J. I.</au><au>Cluver, M.</au><au>Gürkan, G.</au><au>López-Sánchez, Á. R.</au><au>Leahy, D. A.</au><au>Marchetti, L.</au><au>Phillipps, S.</au><au>Prandoni, I.</au><au>Seymour, N.</au><au>Taylor, E. N.</au><au>Vardoulaki, E.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>EMU/GAMA: Radio-detected galaxies are more obscured than optically selected galaxies</atitle><jtitle>Publications of the Astronomical Society of Australia</jtitle><addtitle>Publ. Astron. Soc. Aust</addtitle><date>2024-01-17</date><risdate>2024</risdate><volume>41</volume><artnum>e021</artnum><issn>1323-3580</issn><eissn>1448-6083</eissn><abstract>We demonstrate the importance of radio selection in probing heavily obscured galaxy populations. We combine Evolutionary Map of the Universe (EMU) Early Science data in the Galaxy and Mass Assembly (GAMA) G23 field with the GAMA data, providing optical photometry and spectral line measurements, together with Wide-field Infrared Survey Explorer (WISE) infrared (IR) photometry, providing IR luminosities and colours. We investigate the degree of obscuration in star-forming galaxies, based on the Balmer decrement (BD), and explore how this trend varies, over a redshift range of
$0<z<0.345$
. We demonstrate that the radio-detected population has on average higher levels of obscuration than the parent optical sample, arising through missing the lowest BD and lowest mass galaxies, which are also the lower star formation rate (SFR) and metallicity systems. We discuss possible explanations for this result, including speculation around whether it might arise from steeper stellar initial mass functions in low mass, low SFR galaxies.</abstract><cop>New York, USA</cop><pub>Cambridge University Press</pub><doi>10.1017/pasa.2024.2</doi><tpages>16</tpages><orcidid>https://orcid.org/0000-0002-0309-1599</orcidid><orcidid>https://orcid.org/0000-0002-1207-9137</orcidid><orcidid>https://orcid.org/0000-0002-4814-958X</orcidid><oa>free_for_read</oa></addata></record> |
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| title | EMU/GAMA: Radio-detected galaxies are more obscured than optically selected galaxies |
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