Accurate Astrometry of 22 Southern Hemisphere Radio Sources
| dc.contributor.author | Fey, Alan L. | |
| dc.contributor.author | Ojha, Roopesh | |
| dc.contributor.author | Jauncey, David L. | |
| dc.contributor.author | Johnston, Kenneth J. | |
| dc.contributor.author | Reynolds, John E. | |
| dc.contributor.author | Lovell, James E. J. | |
| dc.contributor.author | Tzioumis, Anastasios K. | |
| dc.contributor.author | Quick, Jonathan F. H. | |
| dc.contributor.author | Nicolson, George D. | |
| dc.contributor.author | Ellingsen, Simon P. | |
| dc.contributor.author | McCulloch, Peter M. | |
| dc.contributor.author | Koyama, Yasuhiro | |
| dc.date.accessioned | 2020-03-27T13:20:53Z | |
| dc.date.available | 2020-03-27T13:20:53Z | |
| dc.date.issued | 2003-12-03 | |
| dc.description.abstract | Milliarcsecond-accurate radio positions for 22 southern hemisphere extragalactic sources are reported. These positions are derived from Mark III very long baseline interferometry observations made between 2003 February and 2003 August. The results presented here supplement an ongoing project to increase the sky density of southern hemisphere sources in order to better define the International Celestial Reference Frame and to provide additional phase-reference sources with accurate positions for use in astrophysical observations. The positions for all 22 sources are south of δ = -3° (positions for 10 of the sources are south of δ = -6° ) and represent the largest group of new milliarcsecond-accurate astrometric positions for sources in this declination range since the initial definition of the International Celestial Reference Frame. The reported positions have average formal uncertainties of 0.5 mas in right ascension and 0.6 mas in declination | en_US |
| dc.description.sponsorship | We would like to thank the staffs of the participating observatories for the time and effort required to make these observations. In addition, we would like to thank the staff of the Washington Correlator for their hard work and dedication. We would also like to thank the NASA/JPL Deep Space Network for MEGA support for use of the 70 m antenna at Tidbinbilla. This research has made use of the NASA/IPAC Extragalactic Database, which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. | en_US |
| dc.description.uri | https://iopscience.iop.org/article/10.1086/381957 | en_US |
| dc.format.extent | 5 pages | en_US |
| dc.genre | journal articles | en_US |
| dc.identifier | doi:10.13016/m2gin8-mcf2 | |
| dc.identifier.citation | Fey, Alan L, Ojha Roopesh, Jauncey David L, Johnston Kenneth J, Reynolds John E, Lovell James E. J, Tzioumis Anastasios K, Quick Jonathan F. H, Nicolson George D, Ellingsen Simon P, McCulloch Peter M, Koyama Yasuhiro, Accurate Astrometry of 22 Southern Hemisphere Radio Sources,https://iopscience.iop.org/article/10.1086/381957 | en_US |
| dc.identifier.uri | http://hdl.handle.net/11603/17704 | |
| dc.identifier.uri | http://simbad.u-strasbg.fr/simbad/sim-ref?querymethod=bib&simbo=on&submit=submit+bibcode&bibcode=2004AJ....127.1791F | |
| dc.identifier.uri | https://ned.ipac.caltech.edu/cgi-bin/objsearch?search_type=Search&refcode=2004AJ....127.1791F | |
| dc.language.iso | en_US | en_US |
| dc.publisher | IOP | en_US |
| dc.relation.isAvailableAt | The University of Maryland, Baltimore County (UMBC) | |
| dc.relation.ispartof | UMBC Physics Department Collection | |
| dc.relation.ispartof | UMBC Center for Space Sciences and Technology (CSST) / Center for Research and Exploration in Space Sciences & Technology II (CRSST II) | |
| dc.rights | This item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author. | |
| dc.rights | Public Domain Mark 1.0 | * |
| dc.rights | This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law | |
| dc.rights.uri | http://creativecommons.org/publicdomain/mark/1.0/ | * |
| dc.title | Accurate Astrometry of 22 Southern Hemisphere Radio Sources | en_US |
| dc.type | Text | en_US |