A Controlled Study of Cold Dust Content in Galaxies from z = 0-2
At , the formation of new stars is dominated by dusty galaxies whose far-IR emission indicates they contain colder dust than local galaxies of a similar luminosity. We explore the reasons for the evolving IR emission of similar galaxies over cosmic time using (1) local galaxies from GOALS ( ), (2) g...
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| Veröffentlicht in: | The Astrophysical journal 2017-07, Vol.843 (1), p.71 |
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| creator | Kirkpatrick, Allison Pope, Alexandra Sajina, Anna Dale, Daniel A. Díaz-Santos, Tanio Hayward, Christopher C. Shi, Yong Somerville, Rachel S. Stierwalt, Sabrina Armus, Lee Kartaltepe, Jeyhan S. Kocevski, Dale D. McIntosh, Daniel H. Sanders, David B. Yan, Lin |
| description | At , the formation of new stars is dominated by dusty galaxies whose far-IR emission indicates they contain colder dust than local galaxies of a similar luminosity. We explore the reasons for the evolving IR emission of similar galaxies over cosmic time using (1) local galaxies from GOALS ( ), (2) galaxies at from 5MUSES ( ), and (3) IR luminous galaxies spanning from GOODS and Spitzer xFLS ( ). All samples have Spitzer mid-IR spectra, and Herschel and ground-based submillimeter imaging covering the full IR spectral energy distribution, allowing us to robustly measure , , and for every galaxy. Despite similar infrared luminosities, dusty star-forming galaxies (DSFG) have a factor of 5 higher dust masses and 5 K colder temperatures. The increase in dust mass is linked to an increase in the gas fractions with redshift, and we do not observe a similar increase in stellar mass or star formation efficiency. , a proxy for , is strongly correlated with independently of redshift. We measure merger classification and galaxy size for a subsample, and there is no obvious correlation between these parameters and or . In DSFG, the change in can fully account for the observed colder dust temperatures, suggesting that any change in the spatial extent of the interstellar medium is a second-order effect. |
| doi_str_mv | 10.3847/1538-4357/aa76dc |
| format | Article |
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We explore the reasons for the evolving IR emission of similar galaxies over cosmic time using (1) local galaxies from GOALS ( ), (2) galaxies at from 5MUSES ( ), and (3) IR luminous galaxies spanning from GOODS and Spitzer xFLS ( ). All samples have Spitzer mid-IR spectra, and Herschel and ground-based submillimeter imaging covering the full IR spectral energy distribution, allowing us to robustly measure , , and for every galaxy. Despite similar infrared luminosities, dusty star-forming galaxies (DSFG) have a factor of 5 higher dust masses and 5 K colder temperatures. The increase in dust mass is linked to an increase in the gas fractions with redshift, and we do not observe a similar increase in stellar mass or star formation efficiency. , a proxy for , is strongly correlated with independently of redshift. We measure merger classification and galaxy size for a subsample, and there is no obvious correlation between these parameters and or . In DSFG, the change in can fully account for the observed colder dust temperatures, suggesting that any change in the spatial extent of the interstellar medium is a second-order effect.</description><identifier>ISSN: 0004-637X</identifier><identifier>EISSN: 1538-4357</identifier><identifier>DOI: 10.3847/1538-4357/aa76dc</identifier><language>eng</language><publisher>Philadelphia: The American Astronomical Society</publisher><subject>Astrophysics ; ASTROPHYSICS, COSMOLOGY AND ASTRONOMY ; CLASSIFICATION ; COSMIC DUST ; Dust ; Dust control ; EFFICIENCY ; EMISSION ; ENERGY SPECTRA ; Galactic evolution ; Galaxies ; galaxies: fundamental parameters ; galaxies: high-redshift ; galaxies: ISM ; galaxies: star formation ; INFRARED SPECTRA ; Infrared spectroscopy ; Interstellar matter ; Interstellar medium ; LUMINOSITY ; MASS ; MILKY WAY ; RED SHIFT ; Space telescopes ; Spectral energy distribution ; Star & galaxy formation ; STAR EVOLUTION ; Star formation ; STARS ; Stars & galaxies ; Stellar mass</subject><ispartof>The Astrophysical journal, 2017-07, Vol.843 (1), p.71</ispartof><rights>2017. 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J</addtitle><description>At , the formation of new stars is dominated by dusty galaxies whose far-IR emission indicates they contain colder dust than local galaxies of a similar luminosity. We explore the reasons for the evolving IR emission of similar galaxies over cosmic time using (1) local galaxies from GOALS ( ), (2) galaxies at from 5MUSES ( ), and (3) IR luminous galaxies spanning from GOODS and Spitzer xFLS ( ). All samples have Spitzer mid-IR spectra, and Herschel and ground-based submillimeter imaging covering the full IR spectral energy distribution, allowing us to robustly measure , , and for every galaxy. Despite similar infrared luminosities, dusty star-forming galaxies (DSFG) have a factor of 5 higher dust masses and 5 K colder temperatures. The increase in dust mass is linked to an increase in the gas fractions with redshift, and we do not observe a similar increase in stellar mass or star formation efficiency. , a proxy for , is strongly correlated with independently of redshift. We measure merger classification and galaxy size for a subsample, and there is no obvious correlation between these parameters and or . 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Pope, Alexandra ; Sajina, Anna ; Dale, Daniel A. ; Díaz-Santos, Tanio ; Hayward, Christopher C. ; Shi, Yong ; Somerville, Rachel S. ; Stierwalt, Sabrina ; Armus, Lee ; Kartaltepe, Jeyhan S. ; Kocevski, Dale D. ; McIntosh, Daniel H. ; Sanders, David B. ; Yan, Lin</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c378t-71bd83a078c0b6593d99e8875f6bd2b975abbd18a3a07f7d9e0087ed9d4fad293</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Astrophysics</topic><topic>ASTROPHYSICS, COSMOLOGY AND ASTRONOMY</topic><topic>CLASSIFICATION</topic><topic>COSMIC DUST</topic><topic>Dust</topic><topic>Dust control</topic><topic>EFFICIENCY</topic><topic>EMISSION</topic><topic>ENERGY SPECTRA</topic><topic>Galactic evolution</topic><topic>Galaxies</topic><topic>galaxies: fundamental parameters</topic><topic>galaxies: high-redshift</topic><topic>galaxies: ISM</topic><topic>galaxies: star formation</topic><topic>INFRARED SPECTRA</topic><topic>Infrared spectroscopy</topic><topic>Interstellar matter</topic><topic>Interstellar medium</topic><topic>LUMINOSITY</topic><topic>MASS</topic><topic>MILKY WAY</topic><topic>RED SHIFT</topic><topic>Space telescopes</topic><topic>Spectral energy distribution</topic><topic>Star & galaxy formation</topic><topic>STAR EVOLUTION</topic><topic>Star formation</topic><topic>STARS</topic><topic>Stars & galaxies</topic><topic>Stellar mass</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kirkpatrick, Allison</creatorcontrib><creatorcontrib>Pope, Alexandra</creatorcontrib><creatorcontrib>Sajina, Anna</creatorcontrib><creatorcontrib>Dale, Daniel A.</creatorcontrib><creatorcontrib>Díaz-Santos, Tanio</creatorcontrib><creatorcontrib>Hayward, Christopher C.</creatorcontrib><creatorcontrib>Shi, Yong</creatorcontrib><creatorcontrib>Somerville, Rachel S.</creatorcontrib><creatorcontrib>Stierwalt, Sabrina</creatorcontrib><creatorcontrib>Armus, Lee</creatorcontrib><creatorcontrib>Kartaltepe, Jeyhan S.</creatorcontrib><creatorcontrib>Kocevski, Dale D.</creatorcontrib><creatorcontrib>McIntosh, Daniel H.</creatorcontrib><creatorcontrib>Sanders, David B.</creatorcontrib><creatorcontrib>Yan, Lin</creatorcontrib><collection>CrossRef</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>OSTI.GOV</collection><jtitle>The Astrophysical journal</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Kirkpatrick, Allison</au><au>Pope, Alexandra</au><au>Sajina, Anna</au><au>Dale, Daniel A.</au><au>Díaz-Santos, Tanio</au><au>Hayward, Christopher C.</au><au>Shi, Yong</au><au>Somerville, Rachel S.</au><au>Stierwalt, Sabrina</au><au>Armus, Lee</au><au>Kartaltepe, Jeyhan S.</au><au>Kocevski, Dale D.</au><au>McIntosh, Daniel H.</au><au>Sanders, David B.</au><au>Yan, Lin</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A Controlled Study of Cold Dust Content in Galaxies from z = 0-2</atitle><jtitle>The Astrophysical journal</jtitle><stitle>APJ</stitle><addtitle>Astrophys. 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The increase in dust mass is linked to an increase in the gas fractions with redshift, and we do not observe a similar increase in stellar mass or star formation efficiency. , a proxy for , is strongly correlated with independently of redshift. We measure merger classification and galaxy size for a subsample, and there is no obvious correlation between these parameters and or . 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| subjects | Astrophysics ASTROPHYSICS, COSMOLOGY AND ASTRONOMY CLASSIFICATION COSMIC DUST Dust Dust control EFFICIENCY EMISSION ENERGY SPECTRA Galactic evolution Galaxies galaxies: fundamental parameters galaxies: high-redshift galaxies: ISM galaxies: star formation INFRARED SPECTRA Infrared spectroscopy Interstellar matter Interstellar medium LUMINOSITY MASS MILKY WAY RED SHIFT Space telescopes Spectral energy distribution Star & galaxy formation STAR EVOLUTION Star formation STARS Stars & galaxies Stellar mass |
| title | A Controlled Study of Cold Dust Content in Galaxies from z = 0-2 |
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