Optical Spectra of Candidate Southern Hemisphere International Celestial Reference Frame (ICRF) Radio Sources
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Titov, Oleg; Jauncey, David; Johnston, H. M.; Hunstead, Richard; Christensen, L
Description
We present the results of spectroscopic observations of the optical counterparts of 47 southern radio sources from the candidate International Celestial Reference Catalogue as part of a very long baseline interferometry (VLBI) program to strengthen the celestial reference frame, especially in the south. We made the observations with the 3.58 m European Southern Observatory New Technology Telescope. We obtained redshifts for 30 quasars and one radio galaxy, with a further seven objects being...[Show more]
dc.contributor.author | Titov, Oleg | |
---|---|---|
dc.contributor.author | Jauncey, David | |
dc.contributor.author | Johnston, H. M. | |
dc.contributor.author | Hunstead, Richard | |
dc.contributor.author | Christensen, L | |
dc.date.accessioned | 2015-12-10T22:20:55Z | |
dc.identifier.issn | 0004-6256 | |
dc.identifier.uri | http://hdl.handle.net/1885/52146 | |
dc.description.abstract | We present the results of spectroscopic observations of the optical counterparts of 47 southern radio sources from the candidate International Celestial Reference Catalogue as part of a very long baseline interferometry (VLBI) program to strengthen the celestial reference frame, especially in the south. We made the observations with the 3.58 m European Southern Observatory New Technology Telescope. We obtained redshifts for 30 quasars and one radio galaxy, with a further seven objects being probable BL Lac objects with featureless spectra. Of the remainder, four were clear misidentifications with Galactic stars and five had low signal-to-noise spectra and could not be classified. These results, in combination with new VLBI data of the radio sources with redshifts more than 2, add significantly to the existing data needed to refine the distribution of source proper motions over the celestial sphere. | |
dc.publisher | University of Chicago Press | |
dc.rights | Author/s retain copyright | |
dc.source | Astronomical Journal | |
dc.subject | Keywords: galaxies: distances and redshifts; quasars: emission lines; radio continuum: general; reference systems | |
dc.title | Optical Spectra of Candidate Southern Hemisphere International Celestial Reference Frame (ICRF) Radio Sources | |
dc.type | Journal article | |
local.description.notes | Imported from ARIES | |
local.identifier.citationvolume | 142 | |
dc.date.issued | 2011 | |
local.identifier.absfor | 020103 - Cosmology and Extragalactic Astronomy | |
local.identifier.ariespublication | u3356449xPUB240 | |
local.type.status | Published Version | |
local.contributor.affiliation | Titov, Oleg , Geoscience Australia | |
local.contributor.affiliation | Jauncey, David, College of Physical and Mathematical Sciences, ANU | |
local.contributor.affiliation | Johnston, H. M., University of Sydney | |
local.contributor.affiliation | Hunstead, Richard, University of Sydney | |
local.contributor.affiliation | Christensen, L, Technische Universität Munich | |
local.bibliographicCitation.issue | 5 | |
local.bibliographicCitation.startpage | A165 | |
local.bibliographicCitation.lastpage | 10 | |
local.identifier.doi | 10.1088/0004-6256/142/5/165 | |
local.identifier.absseo | 970102 - Expanding Knowledge in the Physical Sciences | |
dc.date.updated | 2016-02-24T09:54:48Z | |
local.identifier.scopusID | 2-s2.0-80054738937 | |
local.identifier.thomsonID | 000296777000022 | |
dcterms.accessRights | Open Access | |
Collections | ANU Research Publications |
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01_Titov_Optical_Spectra_of_Candidate_2011.pdf | 1.05 MB | Adobe PDF |
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