$\textit{Herschel}$-ATLAS:The connection between star formation and AGN activity in radio-loud and radio-quiet active galaxies
We examine the relationship between star formation and AGN activity by constructing matched samples of local radio-loud and radio-quiet AGN in the HerschelATLAS fields. Radio-loud AGN are classified as high-excitation and low-excitation radio galaxies (HERGs, LERGs) using their emission lines and W...
| Hlavní autoři: | , , , , , , , , |
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| Médium: | Journal article |
| Vydáno: |
Oxford University Press
2015
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| _version_ | 1826264472905318400 |
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| author | Gurkan, G Hardcastle, M Jarvis, M Smith, D Bourne, N Dunne, L Maddox, S Ivison, R Fritz, J |
| author_facet | Gurkan, G Hardcastle, M Jarvis, M Smith, D Bourne, N Dunne, L Maddox, S Ivison, R Fritz, J |
| author_sort | Gurkan, G |
| collection | OXFORD |
| description | We examine the relationship between star formation and AGN activity by constructing matched samples of local radio-loud and radio-quiet AGN in the HerschelATLAS fields. Radio-loud AGN are classified as high-excitation and low-excitation radio galaxies (HERGs, LERGs) using their emission lines and WISE 22-μm luminosity. AGN accretion and jet powers in these active galaxies are traced by [OIII] emission-line and radio luminosity, respectively. Star formation rates (SFRs) and specific star formation rates (SSFRs) were derived using Herschel 250-μm luminosity and stellar mass measurements from the SDSS MPA-JHU catalogue. In the past, star formation studies of AGN have mostly focused on high-redshift sources to observe the thermal dust emission that peaks in the far-infrared, which limited the samples to powerful objects. However, with Herschel we can expand this to low redshifts. Our stacking analyses show that SFRs and SSFRs of both radio-loud and radioquiet AGN increase with increasing AGN power but that radio-loud AGN tend to have lower SFR. Additionally, radio-quiet AGN are found to have approximately an order of magnitude higher SSFRs than radio-loud AGN for a given level of AGN power. The difference between the star formation properties of radio-loud and -quiet AGN is also seen in samples matched in stellar mass. |
| first_indexed | 2024-03-06T20:08:22Z |
| format | Journal article |
| id | oxford-uuid:29b012a4-d4c8-492d-a3ec-c7eef5f5d2c0 |
| institution | University of Oxford |
| last_indexed | 2024-03-06T20:08:22Z |
| publishDate | 2015 |
| publisher | Oxford University Press |
| record_format | dspace |
| spelling | oxford-uuid:29b012a4-d4c8-492d-a3ec-c7eef5f5d2c02022-03-26T12:20:39Z$\textit{Herschel}$-ATLAS:The connection between star formation and AGN activity in radio-loud and radio-quiet active galaxiesJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:29b012a4-d4c8-492d-a3ec-c7eef5f5d2c0Symplectic Elements at OxfordOxford University Press2015Gurkan, GHardcastle, MJarvis, MSmith, DBourne, NDunne, LMaddox, SIvison, RFritz, JWe examine the relationship between star formation and AGN activity by constructing matched samples of local radio-loud and radio-quiet AGN in the HerschelATLAS fields. Radio-loud AGN are classified as high-excitation and low-excitation radio galaxies (HERGs, LERGs) using their emission lines and WISE 22-μm luminosity. AGN accretion and jet powers in these active galaxies are traced by [OIII] emission-line and radio luminosity, respectively. Star formation rates (SFRs) and specific star formation rates (SSFRs) were derived using Herschel 250-μm luminosity and stellar mass measurements from the SDSS MPA-JHU catalogue. In the past, star formation studies of AGN have mostly focused on high-redshift sources to observe the thermal dust emission that peaks in the far-infrared, which limited the samples to powerful objects. However, with Herschel we can expand this to low redshifts. Our stacking analyses show that SFRs and SSFRs of both radio-loud and radioquiet AGN increase with increasing AGN power but that radio-loud AGN tend to have lower SFR. Additionally, radio-quiet AGN are found to have approximately an order of magnitude higher SSFRs than radio-loud AGN for a given level of AGN power. The difference between the star formation properties of radio-loud and -quiet AGN is also seen in samples matched in stellar mass. |
| spellingShingle | Gurkan, G Hardcastle, M Jarvis, M Smith, D Bourne, N Dunne, L Maddox, S Ivison, R Fritz, J $\textit{Herschel}$-ATLAS:The connection between star formation and AGN activity in radio-loud and radio-quiet active galaxies |
| title | $\textit{Herschel}$-ATLAS:The connection between star formation and AGN
activity in radio-loud and radio-quiet active galaxies |
| title_full | $\textit{Herschel}$-ATLAS:The connection between star formation and AGN
activity in radio-loud and radio-quiet active galaxies |
| title_fullStr | $\textit{Herschel}$-ATLAS:The connection between star formation and AGN
activity in radio-loud and radio-quiet active galaxies |
| title_full_unstemmed | $\textit{Herschel}$-ATLAS:The connection between star formation and AGN
activity in radio-loud and radio-quiet active galaxies |
| title_short | $\textit{Herschel}$-ATLAS:The connection between star formation and AGN
activity in radio-loud and radio-quiet active galaxies |
| title_sort | textit herschel atlas the connection between star formation and agn activity in radio loud and radio quiet active galaxies |
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