Dissecting the Global Cold Dust Properties and Possible Submillimeter Excess of 13 Nearby Spiral Galaxies from the NGLS
We select 13 nearby spiral galaxies from the Nearby Galaxies Legacy Survey (NGLS) project and perform spectral energy distribution fitting for each galaxy applying two-component modified blackbody models on a global scale aim to probe the potential submillimeter (submm) excess. We find that NGC 2976...
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| Veröffentlicht in: | The Astrophysical journal 2020-09, Vol.900 (1), p.53 |
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| creator | Chang, Zhengxue Zhou, Jianjun Wilson, Christine D. Esimbek, Jarken Qiu, Jianjie Li, Dalei Zhou, Minhua He, Yuxin Ji, Weiguang Tang, Xindi Wu, Gang Li, Jun |
| description | We select 13 nearby spiral galaxies from the Nearby Galaxies Legacy Survey (NGLS) project and perform spectral energy distribution fitting for each galaxy applying two-component modified blackbody models on a global scale aim to probe the potential submillimeter (submm) excess. We find that NGC 2976, NGC 3351, and NGC 4631 show excess emission at 850 m when using βc = 2.0. The contributions of CO(3-2), free-free emission or synchrotron radiation cannot explain their 850 m excess. Our results suggest that a submm excess at 850 m may be more easily detected for galaxies with faint total infrared luminosity and low cold dust mass. The colder temperature of cold dust, the more radiation of dust there is at 850 m. The submm excess are prone to be detected in spiral galaxies with low stellar mass. As the metallicity of galaxies become poor, the submm excess is more obvious. |
| doi_str_mv | 10.3847/1538-4357/aba52f |
| format | Article |
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We find that NGC 2976, NGC 3351, and NGC 4631 show excess emission at 850 m when using βc = 2.0. The contributions of CO(3-2), free-free emission or synchrotron radiation cannot explain their 850 m excess. Our results suggest that a submm excess at 850 m may be more easily detected for galaxies with faint total infrared luminosity and low cold dust mass. The colder temperature of cold dust, the more radiation of dust there is at 850 m. The submm excess are prone to be detected in spiral galaxies with low stellar mass. As the metallicity of galaxies become poor, the submm excess is more obvious.</description><identifier>ISSN: 0004-637X</identifier><identifier>EISSN: 1538-4357</identifier><identifier>DOI: 10.3847/1538-4357/aba52f</identifier><language>eng</language><publisher>Philadelphia: The American Astronomical Society</publisher><subject>Astronomical models ; Astrophysics ; Blackbody ; Cosmic dust ; Dust ; Emission ; Galaxies ; Galaxy distribution ; Interstellar medium ; Luminosity ; Metallicity ; Radiation ; Spectral energy distribution ; Spiral galaxies ; Stars & galaxies ; Stellar mass ; Submillimeter astronomy ; Synchrotron radiation ; Synchrotrons</subject><ispartof>The Astrophysical journal, 2020-09, Vol.900 (1), p.53</ispartof><rights>2020. The American Astronomical Society. 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As the metallicity of galaxies become poor, the submm excess is more obvious.</description><subject>Astronomical models</subject><subject>Astrophysics</subject><subject>Blackbody</subject><subject>Cosmic dust</subject><subject>Dust</subject><subject>Emission</subject><subject>Galaxies</subject><subject>Galaxy distribution</subject><subject>Interstellar medium</subject><subject>Luminosity</subject><subject>Metallicity</subject><subject>Radiation</subject><subject>Spectral energy distribution</subject><subject>Spiral galaxies</subject><subject>Stars & galaxies</subject><subject>Stellar mass</subject><subject>Submillimeter astronomy</subject><subject>Synchrotron radiation</subject><subject>Synchrotrons</subject><issn>0004-637X</issn><issn>1538-4357</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNp1kMFLwzAUxoMoOKd3jwGv1iV9adMeZZtVGDqYgreStKlmpEtNWtz-e1srevL0eO993_d4P4QuKbmBhPEZjSAJGER8JqSIwuoITX5Hx2hCCGFBDPz1FJ15vx3aME0n6HOhvVdFq3dvuH1XODNWCoPn1pR40fkWr51tlGu18ljsSry23mtpFN50stbG6Fq1yuHlvlDeY1thCvhRCScPeNNo10dlwoj9YK-crb9vPGarzTk6qYTx6uKnTtHL3fJ5fh-snrKH-e0qKCAibZCmMeNVBAUIEZYFpzFRCYQFk7xiVcxkxIhMCg4Qg-D9RkFCqSQxUJGmJYEpuhpzG2c_OuXbfGs7t-tP5iGDlBAeAe1VZFQVrv_PqSpvnK6FO-SU5APefGCZDyzzEW9vuR4t2jZ_mf_KvwBqCXr4</recordid><startdate>20200901</startdate><enddate>20200901</enddate><creator>Chang, Zhengxue</creator><creator>Zhou, Jianjun</creator><creator>Wilson, Christine D.</creator><creator>Esimbek, Jarken</creator><creator>Qiu, Jianjie</creator><creator>Li, Dalei</creator><creator>Zhou, Minhua</creator><creator>He, Yuxin</creator><creator>Ji, Weiguang</creator><creator>Tang, Xindi</creator><creator>Wu, Gang</creator><creator>Li, Jun</creator><general>The American Astronomical Society</general><general>IOP Publishing</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7TG</scope><scope>8FD</scope><scope>H8D</scope><scope>KL.</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0002-8760-8988</orcidid><orcidid>https://orcid.org/0000-0003-0356-818X</orcidid><orcidid>https://orcid.org/0000-0001-5817-0991</orcidid><orcidid>https://orcid.org/0000-0002-4154-4309</orcidid><orcidid>https://orcid.org/0000-0003-0933-7112</orcidid><orcidid>https://orcid.org/0000-0002-9829-8655</orcidid></search><sort><creationdate>20200901</creationdate><title>Dissecting the Global Cold Dust Properties and Possible Submillimeter Excess of 13 Nearby Spiral Galaxies from the NGLS</title><author>Chang, Zhengxue ; Zhou, Jianjun ; Wilson, Christine D. ; Esimbek, Jarken ; Qiu, Jianjie ; Li, Dalei ; Zhou, Minhua ; He, Yuxin ; Ji, Weiguang ; Tang, Xindi ; Wu, Gang ; Li, Jun</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c350t-99647f53c3aa2dc7160e832c4b7f4f64b540b8c73363a7832e3811b0631a99d03</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Astronomical models</topic><topic>Astrophysics</topic><topic>Blackbody</topic><topic>Cosmic dust</topic><topic>Dust</topic><topic>Emission</topic><topic>Galaxies</topic><topic>Galaxy distribution</topic><topic>Interstellar medium</topic><topic>Luminosity</topic><topic>Metallicity</topic><topic>Radiation</topic><topic>Spectral energy distribution</topic><topic>Spiral galaxies</topic><topic>Stars & galaxies</topic><topic>Stellar mass</topic><topic>Submillimeter astronomy</topic><topic>Synchrotron radiation</topic><topic>Synchrotrons</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Chang, Zhengxue</creatorcontrib><creatorcontrib>Zhou, Jianjun</creatorcontrib><creatorcontrib>Wilson, Christine D.</creatorcontrib><creatorcontrib>Esimbek, Jarken</creatorcontrib><creatorcontrib>Qiu, Jianjie</creatorcontrib><creatorcontrib>Li, Dalei</creatorcontrib><creatorcontrib>Zhou, Minhua</creatorcontrib><creatorcontrib>He, Yuxin</creatorcontrib><creatorcontrib>Ji, Weiguang</creatorcontrib><creatorcontrib>Tang, Xindi</creatorcontrib><creatorcontrib>Wu, Gang</creatorcontrib><creatorcontrib>Li, Jun</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><jtitle>The Astrophysical journal</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Chang, Zhengxue</au><au>Zhou, Jianjun</au><au>Wilson, Christine D.</au><au>Esimbek, Jarken</au><au>Qiu, Jianjie</au><au>Li, Dalei</au><au>Zhou, Minhua</au><au>He, Yuxin</au><au>Ji, Weiguang</au><au>Tang, Xindi</au><au>Wu, Gang</au><au>Li, Jun</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Dissecting the Global Cold Dust Properties and Possible Submillimeter Excess of 13 Nearby Spiral Galaxies from the NGLS</atitle><jtitle>The Astrophysical journal</jtitle><stitle>APJ</stitle><addtitle>Astrophys. 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| subjects | Astronomical models Astrophysics Blackbody Cosmic dust Dust Emission Galaxies Galaxy distribution Interstellar medium Luminosity Metallicity Radiation Spectral energy distribution Spiral galaxies Stars & galaxies Stellar mass Submillimeter astronomy Synchrotron radiation Synchrotrons |
| title | Dissecting the Global Cold Dust Properties and Possible Submillimeter Excess of 13 Nearby Spiral Galaxies from the NGLS |
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