{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2024,1,31]],"date-time":"2024-01-31T12:33:08Z","timestamp":1706704388697},"reference-count":7,"publisher":"Wiley","issue":"2-3","license":[{"start":{"date-parts":[[2009,2,13]],"date-time":"2009-02-13T00:00:00Z","timestamp":1234483200000},"content-version":"vor","delay-in-days":12,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Astron Nachr"],"published-print":{"date-parts":[[2009,2]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>In recent years, \u2018baby\u2019 (&lt;103 yr) and \u2018young\u2019 (103\u2013105 yr) radio galaxies have been found and classified, although their numbers are still small (tens). Also, they have many different names, depending on the type of survey and scientific context in which they were found: compact steep spectrum sources (CSS), giga\u2010Hertz peaked spectrum sources (GPS) and compact\u2010medium symmetric objects (C\u2010MSO). The latter have the radio galaxy structure more obvious and correspond to the \u2018babies\u2019 (CSOs; &lt; 1 kpc) and \u2018young\u2019 (MSOs; 1\u201315 kpc) radio galaxies. The log\u2010size distribution of CSOs shows a sharp drop at 0.3 kpc. This trend continues through flat\u2010spectrum MSOs (over the full 1\u201315 kpc size range). In order to find out if this lack of large CSOs and flat\u2010spectrum MSOs is due to poor sampling (lack of surveys that probe efficiently the 0.3\u201315 kpc size range) and\/or has physical meaning (e.g. if the lobes of CSOs expand as they grow and age, they might become CSSs, \u2018disappearing\u2019 from the flat\u2010spectrum MSO statistics), we have built a sample of 157 flat\u2010spectrum radio sources with structure on \u223c0.3\u201315 kpc scales. We are using new, archived and published data to produce and inspect hundreds of multi\u2010frequency multi\u2010instrument maps and models. We have already found 13 new secure CSO\/MSOs. We expect to uncover \u223c30\u201340 new CSOs and MSOs, most on the 0.3\u201315 kpc size range, when our project is complete (\u00a9 2009 WILEY\u2010VCH Verlag GmbH &amp; Co. KGaA, Weinheim)<\/jats:p>","DOI":"10.1002\/asna.200811153","type":"journal-article","created":{"date-parts":[[2009,2,13]],"date-time":"2009-02-13T06:49:05Z","timestamp":1234507745000},"page":"190-192","source":"Crossref","is-referenced-by-count":2,"title":["The lack of large compact symmetric objects"],"prefix":"10.1002","volume":"330","author":[{"given":"P.","family":"Augusto","sequence":"first","affiliation":[]}],"member":"311","published-online":{"date-parts":[[2009,2,13]]},"reference":[{"key":"e_1_2_1_2_1","doi-asserted-by":"crossref","unstructured":"Augusto P.:2008 Proceedings of Science MRU 083","DOI":"10.1088\/1126-6708\/2008\/04\/083"},{"key":"e_1_2_1_3_1","doi-asserted-by":"publisher","DOI":"10.1046\/j.1365-8711.1998.01871.x"},{"key":"e_1_2_1_4_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365-2966.2006.10227.x"},{"key":"e_1_2_1_5_1","doi-asserted-by":"publisher","DOI":"10.1086\/311002"},{"key":"e_1_2_1_6_1","doi-asserted-by":"publisher","DOI":"10.1046\/j.1365-8711.2003.06256.x"},{"key":"e_1_2_1_7_1","doi-asserted-by":"publisher","DOI":"10.1093\/mnras\/254.4.655"},{"key":"e_1_2_1_8_1","doi-asserted-by":"publisher","DOI":"10.1093\/mnras\/198.3.843"}],"container-title":["Astronomische Nachrichten"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1002%2Fasna.200811153","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/asna.200811153","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,8,30]],"date-time":"2023-08-30T09:01:19Z","timestamp":1693386079000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/asna.200811153"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2009,2]]},"references-count":7,"journal-issue":{"issue":"2-3","published-print":{"date-parts":[[2009,2]]}},"alternative-id":["10.1002\/asna.200811153"],"URL":"https:\/\/doi.org\/10.1002\/asna.200811153","archive":["Portico"],"relation":{},"ISSN":["0004-6337","1521-3994"],"issn-type":[{"value":"0004-6337","type":"print"},{"value":"1521-3994","type":"electronic"}],"subject":[],"published":{"date-parts":[[2009,2]]}}}