The large, bright QSO survey. IV, QSOs in two equatorial fields
This is the fourth paper in a series aimed at selecting about 1000 QSOs brighter than B(J) about 18.7 using machine-scanned direct and objective- prism plates from the UK Schmidt Telescope. The plate material is scanned at the Automated Plate Measuring facility. The candidate list is derived using a...
Gespeichert in:
| Veröffentlicht in: | The Astronomical journal 1991-08, Vol.102 (2), p.461-487 |
|---|---|
| Hauptverfasser: | , , , , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | 487 |
|---|---|
| container_issue | 2 |
| container_start_page | 461 |
| container_title | The Astronomical journal |
| container_volume | 102 |
| creator | CHAFFEE, F. H FOLTZ, C. B HEWETT, P. C FRANCIS, P. J WEYMANN, R. J MORRIS, S. L ANDERSON, S. F MACALPINE, G. M |
| description | This is the fourth paper in a series aimed at selecting about 1000 QSOs brighter than B(J) about 18.7 using machine-scanned direct and objective- prism plates from the UK Schmidt Telescope. The plate material is scanned at the Automated Plate Measuring facility. The candidate list is derived using a number of complementary selection algorithms ranging from 'traditional' criteria, such as the presence of strong emission features, to criteria designed to select objects whose objective-prism spectra cannot be classified as normal stars, although they may possess no obvious QSO- like features. Follow-up spectroscopy at the Multiple Mirror Telescope is used to classify each candidate. This paper presents results from the two final UK Schmidt Telescope equatorial fields in which 125 QSOs have been found as well as the detection of an additional 11 QSOs in the 0000+0000 field presented in the second paper in this series. Coordinates, magnitudes, redshifts and spectra of moderate resolution, and signal-to- noise ratio for all 136 QSOs are presented as well as for eight additional extragalactic objects which fail to meet the absolute magnitude criterion as QSOs. (Author) |
| doi_str_mv | 10.1086/115886 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_osti_</sourceid><recordid>TN_cdi_osti_scitechconnect_5157062</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>25488083</sourcerecordid><originalsourceid>FETCH-LOGICAL-c2566-e580ad3f7de6d91dda0f4777d4269ac39f4c8e3dd51437e988a8c70d6c351e353</originalsourceid><addsrcrecordid>eNpF0FtLAzEQBeAgCtaqvyEI-tStSXPZ2SeR4qVQKGL1NcRkto1sd9tkV-m_t6UFn4aBj3PgEHLN2ZAz0PecKwB9QnpcCcgEAD8lPcaYzPRI6XNykdI3Y5wDkz3yMF8irWxc4IB-xbBYtvTtfUZTF39wO6STz8H-TzTUtP1tKG462zYx2IqWASufLslZaauEV8fbJx_PT_PxazadvUzGj9PM7Tp1hgqY9aLMPWpfcO8tK2We516OdGGdKErpAIX3ikuRYwFgweXMaycUR6FEn9wccpvUBpNcaNEtXVPX6FqjuMqZHu3Q3QGtY7PpMLVmFZLDqrI1Nl0yIyUBGIh_6GKTUsTSrGNY2bg1nJn9iOYw4g7eHhNtcrYqo61dSP-6AAmCg_gD-6VtVg</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>25488083</pqid></control><display><type>article</type><title>The large, bright QSO survey. IV, QSOs in two equatorial fields</title><source>EZB-FREE-00999 freely available EZB journals</source><source>Alma/SFX Local Collection</source><creator>CHAFFEE, F. H ; FOLTZ, C. B ; HEWETT, P. C ; FRANCIS, P. J ; WEYMANN, R. J ; MORRIS, S. L ; ANDERSON, S. F ; MACALPINE, G. M</creator><creatorcontrib>CHAFFEE, F. H ; FOLTZ, C. B ; HEWETT, P. C ; FRANCIS, P. J ; WEYMANN, R. J ; MORRIS, S. L ; ANDERSON, S. F ; MACALPINE, G. M</creatorcontrib><description>This is the fourth paper in a series aimed at selecting about 1000 QSOs brighter than B(J) about 18.7 using machine-scanned direct and objective- prism plates from the UK Schmidt Telescope. The plate material is scanned at the Automated Plate Measuring facility. The candidate list is derived using a number of complementary selection algorithms ranging from 'traditional' criteria, such as the presence of strong emission features, to criteria designed to select objects whose objective-prism spectra cannot be classified as normal stars, although they may possess no obvious QSO- like features. Follow-up spectroscopy at the Multiple Mirror Telescope is used to classify each candidate. This paper presents results from the two final UK Schmidt Telescope equatorial fields in which 125 QSOs have been found as well as the detection of an additional 11 QSOs in the 0000+0000 field presented in the second paper in this series. Coordinates, magnitudes, redshifts and spectra of moderate resolution, and signal-to- noise ratio for all 136 QSOs are presented as well as for eight additional extragalactic objects which fail to meet the absolute magnitude criterion as QSOs. (Author)</description><identifier>ISSN: 0004-6256</identifier><identifier>EISSN: 1538-3881</identifier><identifier>DOI: 10.1086/115886</identifier><identifier>CODEN: ANJOAA</identifier><language>eng</language><publisher>Chicago, IL: University of Chicago Press</publisher><subject>640102 - Astrophysics & Cosmology- Stars & Quasi-Stellar, Radio & X-Ray Sources ; Astronomy ; BRIGHTNESS ; CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ; CLASSIFICATION ; COSMIC RADIO SOURCES ; Earth, ocean, space ; Exact sciences and technology ; INTERGALACTIC SPACE ; OPTICAL PROPERTIES ; PHYSICAL PROPERTIES ; QUASARS ; Quasars. Active or peculiar galaxies, objects, and systems ; RED SHIFT ; SIGNAL-TO-NOISE RATIO ; SPACE ; SPECTROPHOTOMETRY ; Stellar systems. Galactic and extragalactic objects and systems. The universe ; SURVEYS ; TELESCOPES</subject><ispartof>The Astronomical journal, 1991-08, Vol.102 (2), p.461-487</ispartof><rights>1991 INIST-CNRS</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c2566-e580ad3f7de6d91dda0f4777d4269ac39f4c8e3dd51437e988a8c70d6c351e353</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,776,780,881,27901,27902</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=19848318$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.osti.gov/biblio/5157062$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>CHAFFEE, F. H</creatorcontrib><creatorcontrib>FOLTZ, C. B</creatorcontrib><creatorcontrib>HEWETT, P. C</creatorcontrib><creatorcontrib>FRANCIS, P. J</creatorcontrib><creatorcontrib>WEYMANN, R. J</creatorcontrib><creatorcontrib>MORRIS, S. L</creatorcontrib><creatorcontrib>ANDERSON, S. F</creatorcontrib><creatorcontrib>MACALPINE, G. M</creatorcontrib><title>The large, bright QSO survey. IV, QSOs in two equatorial fields</title><title>The Astronomical journal</title><description>This is the fourth paper in a series aimed at selecting about 1000 QSOs brighter than B(J) about 18.7 using machine-scanned direct and objective- prism plates from the UK Schmidt Telescope. The plate material is scanned at the Automated Plate Measuring facility. The candidate list is derived using a number of complementary selection algorithms ranging from 'traditional' criteria, such as the presence of strong emission features, to criteria designed to select objects whose objective-prism spectra cannot be classified as normal stars, although they may possess no obvious QSO- like features. Follow-up spectroscopy at the Multiple Mirror Telescope is used to classify each candidate. This paper presents results from the two final UK Schmidt Telescope equatorial fields in which 125 QSOs have been found as well as the detection of an additional 11 QSOs in the 0000+0000 field presented in the second paper in this series. Coordinates, magnitudes, redshifts and spectra of moderate resolution, and signal-to- noise ratio for all 136 QSOs are presented as well as for eight additional extragalactic objects which fail to meet the absolute magnitude criterion as QSOs. (Author)</description><subject>640102 - Astrophysics & Cosmology- Stars & Quasi-Stellar, Radio & X-Ray Sources</subject><subject>Astronomy</subject><subject>BRIGHTNESS</subject><subject>CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS</subject><subject>CLASSIFICATION</subject><subject>COSMIC RADIO SOURCES</subject><subject>Earth, ocean, space</subject><subject>Exact sciences and technology</subject><subject>INTERGALACTIC SPACE</subject><subject>OPTICAL PROPERTIES</subject><subject>PHYSICAL PROPERTIES</subject><subject>QUASARS</subject><subject>Quasars. Active or peculiar galaxies, objects, and systems</subject><subject>RED SHIFT</subject><subject>SIGNAL-TO-NOISE RATIO</subject><subject>SPACE</subject><subject>SPECTROPHOTOMETRY</subject><subject>Stellar systems. Galactic and extragalactic objects and systems. The universe</subject><subject>SURVEYS</subject><subject>TELESCOPES</subject><issn>0004-6256</issn><issn>1538-3881</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1991</creationdate><recordtype>article</recordtype><recordid>eNpF0FtLAzEQBeAgCtaqvyEI-tStSXPZ2SeR4qVQKGL1NcRkto1sd9tkV-m_t6UFn4aBj3PgEHLN2ZAz0PecKwB9QnpcCcgEAD8lPcaYzPRI6XNykdI3Y5wDkz3yMF8irWxc4IB-xbBYtvTtfUZTF39wO6STz8H-TzTUtP1tKG462zYx2IqWASufLslZaauEV8fbJx_PT_PxazadvUzGj9PM7Tp1hgqY9aLMPWpfcO8tK2We516OdGGdKErpAIX3ikuRYwFgweXMaycUR6FEn9wccpvUBpNcaNEtXVPX6FqjuMqZHu3Q3QGtY7PpMLVmFZLDqrI1Nl0yIyUBGIh_6GKTUsTSrGNY2bg1nJn9iOYw4g7eHhNtcrYqo61dSP-6AAmCg_gD-6VtVg</recordid><startdate>19910801</startdate><enddate>19910801</enddate><creator>CHAFFEE, F. H</creator><creator>FOLTZ, C. B</creator><creator>HEWETT, P. C</creator><creator>FRANCIS, P. J</creator><creator>WEYMANN, R. J</creator><creator>MORRIS, S. L</creator><creator>ANDERSON, S. F</creator><creator>MACALPINE, G. M</creator><general>University of Chicago Press</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>OTOTI</scope></search><sort><creationdate>19910801</creationdate><title>The large, bright QSO survey. IV, QSOs in two equatorial fields</title><author>CHAFFEE, F. H ; FOLTZ, C. B ; HEWETT, P. C ; FRANCIS, P. J ; WEYMANN, R. J ; MORRIS, S. L ; ANDERSON, S. F ; MACALPINE, G. M</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c2566-e580ad3f7de6d91dda0f4777d4269ac39f4c8e3dd51437e988a8c70d6c351e353</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1991</creationdate><topic>640102 - Astrophysics & Cosmology- Stars & Quasi-Stellar, Radio & X-Ray Sources</topic><topic>Astronomy</topic><topic>BRIGHTNESS</topic><topic>CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS</topic><topic>CLASSIFICATION</topic><topic>COSMIC RADIO SOURCES</topic><topic>Earth, ocean, space</topic><topic>Exact sciences and technology</topic><topic>INTERGALACTIC SPACE</topic><topic>OPTICAL PROPERTIES</topic><topic>PHYSICAL PROPERTIES</topic><topic>QUASARS</topic><topic>Quasars. Active or peculiar galaxies, objects, and systems</topic><topic>RED SHIFT</topic><topic>SIGNAL-TO-NOISE RATIO</topic><topic>SPACE</topic><topic>SPECTROPHOTOMETRY</topic><topic>Stellar systems. Galactic and extragalactic objects and systems. The universe</topic><topic>SURVEYS</topic><topic>TELESCOPES</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>CHAFFEE, F. H</creatorcontrib><creatorcontrib>FOLTZ, C. B</creatorcontrib><creatorcontrib>HEWETT, P. C</creatorcontrib><creatorcontrib>FRANCIS, P. J</creatorcontrib><creatorcontrib>WEYMANN, R. J</creatorcontrib><creatorcontrib>MORRIS, S. L</creatorcontrib><creatorcontrib>ANDERSON, S. F</creatorcontrib><creatorcontrib>MACALPINE, G. M</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>OSTI.GOV</collection><jtitle>The Astronomical journal</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>CHAFFEE, F. H</au><au>FOLTZ, C. B</au><au>HEWETT, P. C</au><au>FRANCIS, P. J</au><au>WEYMANN, R. J</au><au>MORRIS, S. L</au><au>ANDERSON, S. F</au><au>MACALPINE, G. M</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The large, bright QSO survey. IV, QSOs in two equatorial fields</atitle><jtitle>The Astronomical journal</jtitle><date>1991-08-01</date><risdate>1991</risdate><volume>102</volume><issue>2</issue><spage>461</spage><epage>487</epage><pages>461-487</pages><issn>0004-6256</issn><eissn>1538-3881</eissn><coden>ANJOAA</coden><abstract>This is the fourth paper in a series aimed at selecting about 1000 QSOs brighter than B(J) about 18.7 using machine-scanned direct and objective- prism plates from the UK Schmidt Telescope. The plate material is scanned at the Automated Plate Measuring facility. The candidate list is derived using a number of complementary selection algorithms ranging from 'traditional' criteria, such as the presence of strong emission features, to criteria designed to select objects whose objective-prism spectra cannot be classified as normal stars, although they may possess no obvious QSO- like features. Follow-up spectroscopy at the Multiple Mirror Telescope is used to classify each candidate. This paper presents results from the two final UK Schmidt Telescope equatorial fields in which 125 QSOs have been found as well as the detection of an additional 11 QSOs in the 0000+0000 field presented in the second paper in this series. Coordinates, magnitudes, redshifts and spectra of moderate resolution, and signal-to- noise ratio for all 136 QSOs are presented as well as for eight additional extragalactic objects which fail to meet the absolute magnitude criterion as QSOs. (Author)</abstract><cop>Chicago, IL</cop><pub>University of Chicago Press</pub><doi>10.1086/115886</doi><tpages>27</tpages><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0004-6256 |
| ispartof | The Astronomical journal, 1991-08, Vol.102 (2), p.461-487 |
| issn | 0004-6256 1538-3881 |
| language | eng |
| recordid | cdi_osti_scitechconnect_5157062 |
| source | EZB-FREE-00999 freely available EZB journals; Alma/SFX Local Collection |
| subjects | 640102 - Astrophysics & Cosmology- Stars & Quasi-Stellar, Radio & X-Ray Sources Astronomy BRIGHTNESS CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS CLASSIFICATION COSMIC RADIO SOURCES Earth, ocean, space Exact sciences and technology INTERGALACTIC SPACE OPTICAL PROPERTIES PHYSICAL PROPERTIES QUASARS Quasars. Active or peculiar galaxies, objects, and systems RED SHIFT SIGNAL-TO-NOISE RATIO SPACE SPECTROPHOTOMETRY Stellar systems. Galactic and extragalactic objects and systems. The universe SURVEYS TELESCOPES |
| title | The large, bright QSO survey. IV, QSOs in two equatorial fields |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-28T18%3A02%3A33IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_osti_&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=The%20large,%20bright%20QSO%20survey.%20IV,%20QSOs%20in%20two%20equatorial%20fields&rft.jtitle=The%20Astronomical%20journal&rft.au=CHAFFEE,%20F.%20H&rft.date=1991-08-01&rft.volume=102&rft.issue=2&rft.spage=461&rft.epage=487&rft.pages=461-487&rft.issn=0004-6256&rft.eissn=1538-3881&rft.coden=ANJOAA&rft_id=info:doi/10.1086/115886&rft_dat=%3Cproquest_osti_%3E25488083%3C/proquest_osti_%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=25488083&rft_id=info:pmid/&rfr_iscdi=true |