2009/01/20 by C. Stanghellini, Carlo Stanghellini, D. Dallacasa +3 · 14 citations
Physics and Astronomy · #Astrophysical Phenomena and Observations #Astrophysics and Cosmic Phenomena #Astrophysics and Star Formation Studies #Flux (metallurgy) #Large sample #Limit (mathematics) #Order (exchange) #Radio spectrum #Sample (material) #Spectral line #astro-ph.CO
paper · pdf · doi:10.1002/asna.200811162
published in Astronomische Nachrichten 330(2-3), 223-225 (Wiley) · 3 pages. Accepted for publication in Astronomische Nachrichten
arxiv created 2009/01/20 · openalex publication_date 2009/02/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Abstract We present a sample of sources with convex radio spectra peaking at frequencies above a few GHz, known as “High Frequency Peakers” (HFPs). A “bright” sample with a flux density limit of 300 mJy at 5 GHz has been presented by Dallacasa et al. (2000). Here we present the “faint” sample with flux density between 50 and 300 mJy at 5 GHz, restricted to the area around the North Galactic Cap, where the FIRST catalogue is available. The candidates have been observed with the VLA at several frequencies ranging from 1.4 to 22 GHz, in order to derive a simultaneous radio spectrum. The final list of confirmed HFP sources consists of 61 objects (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)