Do BL Lac objects and FR I radio galaxies inhabit the same galaxy environment?
ABSTRACT We investigate the environments of galaxies around BL Lacertae (BL Lac) objects and Fanaroff–Riley class I (FR I) radio galaxies, the alleged parent populations of misaligned sources. We compare the environment of a sample of 50 BL Lac objects at 0.1
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Veröffentlicht in: | Monthly notices of the Royal Astronomical Society. Letters 2019-05, Vol.485 (1), p.L89-L92 |
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creator | Sandrinelli, A Falomo, R Treves, A |
description | ABSTRACT
We investigate the environments of galaxies around BL Lacertae (BL Lac) objects and Fanaroff–Riley class I (FR I) radio galaxies, the alleged parent populations of misaligned sources. We compare the environment of a sample of 50 BL Lac objects at 0.1 |
doi_str_mv | 10.1093/mnrasl/slz033 |
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We investigate the environments of galaxies around BL Lacertae (BL Lac) objects and Fanaroff–Riley class I (FR I) radio galaxies, the alleged parent populations of misaligned sources. We compare the environment of a sample of 50 BL Lac objects at 0.1 < z < 0.33 with that of a sample of 90 FR I galaxies at 0.1 < z < 0.15. The galaxy environment is studied by using Sloan Digital Sky Survey Data Release 14 images in the i band. We find that the galaxy excess density within 0.5 Mpc around FR I radio galaxies is a factor of ∼2 larger than that around BL Lacs. This implies a reconsideration of the parent population of BL Lac objects.</description><identifier>ISSN: 1745-3925</identifier><identifier>EISSN: 1745-3933</identifier><identifier>DOI: 10.1093/mnrasl/slz033</identifier><language>eng</language><publisher>Oxford University Press</publisher><ispartof>Monthly notices of the Royal Astronomical Society. Letters, 2019-05, Vol.485 (1), p.L89-L92</ispartof><rights>2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society 2019</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c270t-ed8f618e33f3aa03882f2df701ee774a5c9c4594c2b95341a1303d2d9b3838e93</citedby><cites>FETCH-LOGICAL-c270t-ed8f618e33f3aa03882f2df701ee774a5c9c4594c2b95341a1303d2d9b3838e93</cites><orcidid>0000-0001-5171-6197 ; 0000-0003-4137-6541</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids></links><search><creatorcontrib>Sandrinelli, A</creatorcontrib><creatorcontrib>Falomo, R</creatorcontrib><creatorcontrib>Treves, A</creatorcontrib><title>Do BL Lac objects and FR I radio galaxies inhabit the same galaxy environment?</title><title>Monthly notices of the Royal Astronomical Society. Letters</title><description>ABSTRACT
We investigate the environments of galaxies around BL Lacertae (BL Lac) objects and Fanaroff–Riley class I (FR I) radio galaxies, the alleged parent populations of misaligned sources. We compare the environment of a sample of 50 BL Lac objects at 0.1 < z < 0.33 with that of a sample of 90 FR I galaxies at 0.1 < z < 0.15. The galaxy environment is studied by using Sloan Digital Sky Survey Data Release 14 images in the i band. We find that the galaxy excess density within 0.5 Mpc around FR I radio galaxies is a factor of ∼2 larger than that around BL Lacs. This implies a reconsideration of the parent population of BL Lac objects.</description><issn>1745-3925</issn><issn>1745-3933</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNqFkL1OwzAUhS0EEqUwsntkCbV9E2xPCAqllSKBEMzRjXNDU-WnsgOiPE2fpU8GVRAr0znS-XSGj7FzKS6lsDBpWo-hnoT6SwAcsJHUcRKBBTj86yo5ZichrIQAbbQZsae7jt-mu22Kjnf5ilwfOLYFnz3vtgvusag6_oY1flYUeNUuMa963i-JB2xoWDac2o_Kd21DbX99yo5KrAOd_eaYvc7uX6bzKH18WExv0sgpLfqIClNeSUMAJSAKMEaVqii1kERax5g46-LExk7lNoFYogQBhSpsDgYMWRizaPh1vgvBU5mtfdWg32RSZHsd2aAjG3T88BcD372v_0G_AR8lZGU</recordid><startdate>20190501</startdate><enddate>20190501</enddate><creator>Sandrinelli, A</creator><creator>Falomo, R</creator><creator>Treves, A</creator><general>Oxford University Press</general><scope>AAYXX</scope><scope>CITATION</scope><orcidid>https://orcid.org/0000-0001-5171-6197</orcidid><orcidid>https://orcid.org/0000-0003-4137-6541</orcidid></search><sort><creationdate>20190501</creationdate><title>Do BL Lac objects and FR I radio galaxies inhabit the same galaxy environment?</title><author>Sandrinelli, A ; Falomo, R ; Treves, A</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c270t-ed8f618e33f3aa03882f2df701ee774a5c9c4594c2b95341a1303d2d9b3838e93</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Sandrinelli, A</creatorcontrib><creatorcontrib>Falomo, R</creatorcontrib><creatorcontrib>Treves, A</creatorcontrib><collection>CrossRef</collection><jtitle>Monthly notices of the Royal Astronomical Society. Letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Sandrinelli, A</au><au>Falomo, R</au><au>Treves, A</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Do BL Lac objects and FR I radio galaxies inhabit the same galaxy environment?</atitle><jtitle>Monthly notices of the Royal Astronomical Society. Letters</jtitle><date>2019-05-01</date><risdate>2019</risdate><volume>485</volume><issue>1</issue><spage>L89</spage><epage>L92</epage><pages>L89-L92</pages><issn>1745-3925</issn><eissn>1745-3933</eissn><abstract>ABSTRACT
We investigate the environments of galaxies around BL Lacertae (BL Lac) objects and Fanaroff–Riley class I (FR I) radio galaxies, the alleged parent populations of misaligned sources. We compare the environment of a sample of 50 BL Lac objects at 0.1 < z < 0.33 with that of a sample of 90 FR I galaxies at 0.1 < z < 0.15. The galaxy environment is studied by using Sloan Digital Sky Survey Data Release 14 images in the i band. We find that the galaxy excess density within 0.5 Mpc around FR I radio galaxies is a factor of ∼2 larger than that around BL Lacs. This implies a reconsideration of the parent population of BL Lac objects.</abstract><pub>Oxford University Press</pub><doi>10.1093/mnrasl/slz033</doi><orcidid>https://orcid.org/0000-0001-5171-6197</orcidid><orcidid>https://orcid.org/0000-0003-4137-6541</orcidid></addata></record> |
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title | Do BL Lac objects and FR I radio galaxies inhabit the same galaxy environment? |
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