The extent of CO in the early-type galaxy NGC 4472
NGC 4472, and E/SO system, is the earliest type normal galaxy with detected CO emission, and here we present additional radio observations in the lines of CO(1-0) and CO(2-1) to determine the distribution and internal properties of this gas. The original detection is reconfirmed, but observations at...
Gespeichert in:
| Veröffentlicht in: | Astronomy and astrophysics (Berlin) 1994-01, Vol.281 (2), p.327-330 |
|---|---|
| Hauptverfasser: | , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | 330 |
|---|---|
| container_issue | 2 |
| container_start_page | 327 |
| container_title | Astronomy and astrophysics (Berlin) |
| container_volume | 281 |
| creator | Hutchtmeier, W. K. Bregman, J. N. Hogg, D. E. Roberts, M. S. |
| description | NGC 4472, and E/SO system, is the earliest type normal galaxy with detected CO emission, and here we present additional radio observations in the lines of CO(1-0) and CO(2-1) to determine the distribution and internal properties of this gas. The original detection is reconfirmed, but observations at five surrounding locations and at two other locations in the galaxy do not show the gas to be extended; the total H2 gas mass is estimated to be 4 x 10(exp 7) solar mass. A high CO(1-0)/CO(2-1) brightness temperature ratio is found (greater than 3), which is indicative of subthermal excitation of the CO(2-1) line that can occur at low gas temperatures and low gas densities. Also, upper limits are given for the CO(2-1) fluxes in four other early-type galaxies. |
| format | Article |
| fullrecord | <record><control><sourceid>nasa_pasca</sourceid><recordid>TN_cdi_pascalfrancis_primary_3903385</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>19950043612</sourcerecordid><originalsourceid>FETCH-LOGICAL-n135t-efdb6801efbe0cb2188b0d729456eb9d6c86e3e2d090b0f54fc68465c68b955e3</originalsourceid><addsrcrecordid>eNotT81KxDAYDKJgXX0DDzl4DXz53eQoRVdhcS_ruSTtF63UWJoctm9vZL3MMMMww1yQhispGGyVuSQNAChmpOHX5CbnryoFt7Ih4viJFE8FU6E_kbYHOiZa_jy_TCsr64z0w0_-tNK3XUuV2opbchX9lPHunzfk_fnp2L6w_WH32j7uWeJSF4ZxCMYCxxgQ-lDnbIBhK5zSBoMbTG8NShQDOAgQtYq9scroisFpjXJDHs69s8-9n-LiUz_mbl7Gb7-snXQgpdU1dn-OJZ99l8qSO-6crn_rWyF_Aa74SDI</addsrcrecordid><sourcetype>Index Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype></control><display><type>article</type><title>The extent of CO in the early-type galaxy NGC 4472</title><source>EDP Sciences</source><source>NASA Technical Reports Server</source><source>EZB-FREE-00999 freely available EZB journals</source><creator>Hutchtmeier, W. K. ; Bregman, J. N. ; Hogg, D. E. ; Roberts, M. S.</creator><creatorcontrib>Hutchtmeier, W. K. ; Bregman, J. N. ; Hogg, D. E. ; Roberts, M. S.</creatorcontrib><description>NGC 4472, and E/SO system, is the earliest type normal galaxy with detected CO emission, and here we present additional radio observations in the lines of CO(1-0) and CO(2-1) to determine the distribution and internal properties of this gas. The original detection is reconfirmed, but observations at five surrounding locations and at two other locations in the galaxy do not show the gas to be extended; the total H2 gas mass is estimated to be 4 x 10(exp 7) solar mass. A high CO(1-0)/CO(2-1) brightness temperature ratio is found (greater than 3), which is indicative of subthermal excitation of the CO(2-1) line that can occur at low gas temperatures and low gas densities. Also, upper limits are given for the CO(2-1) fluxes in four other early-type galaxies.</description><identifier>ISSN: 0004-6361</identifier><identifier>EISSN: 1432-0746</identifier><identifier>CODEN: AAEJAF</identifier><language>eng</language><publisher>Legacy CDMS: EDP Sciences</publisher><subject>Astronomy ; Earth, ocean, space ; Elliptical galaxies ; Exact sciences and technology ; Normal galaxies. Extragalactic objects and systems (by type) ; Stellar systems. Galactic and extragalactic objects and systems. The universe</subject><ispartof>Astronomy and astrophysics (Berlin), 1994-01, Vol.281 (2), p.327-330</ispartof><rights>1994 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=3903385$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Hutchtmeier, W. K.</creatorcontrib><creatorcontrib>Bregman, J. N.</creatorcontrib><creatorcontrib>Hogg, D. E.</creatorcontrib><creatorcontrib>Roberts, M. S.</creatorcontrib><title>The extent of CO in the early-type galaxy NGC 4472</title><title>Astronomy and astrophysics (Berlin)</title><description>NGC 4472, and E/SO system, is the earliest type normal galaxy with detected CO emission, and here we present additional radio observations in the lines of CO(1-0) and CO(2-1) to determine the distribution and internal properties of this gas. The original detection is reconfirmed, but observations at five surrounding locations and at two other locations in the galaxy do not show the gas to be extended; the total H2 gas mass is estimated to be 4 x 10(exp 7) solar mass. A high CO(1-0)/CO(2-1) brightness temperature ratio is found (greater than 3), which is indicative of subthermal excitation of the CO(2-1) line that can occur at low gas temperatures and low gas densities. Also, upper limits are given for the CO(2-1) fluxes in four other early-type galaxies.</description><subject>Astronomy</subject><subject>Earth, ocean, space</subject><subject>Elliptical galaxies</subject><subject>Exact sciences and technology</subject><subject>Normal galaxies. Extragalactic objects and systems (by type)</subject><subject>Stellar systems. Galactic and extragalactic objects and systems. The universe</subject><issn>0004-6361</issn><issn>1432-0746</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1994</creationdate><recordtype>article</recordtype><sourceid>CYI</sourceid><recordid>eNotT81KxDAYDKJgXX0DDzl4DXz53eQoRVdhcS_ruSTtF63UWJoctm9vZL3MMMMww1yQhispGGyVuSQNAChmpOHX5CbnryoFt7Ih4viJFE8FU6E_kbYHOiZa_jy_TCsr64z0w0_-tNK3XUuV2opbchX9lPHunzfk_fnp2L6w_WH32j7uWeJSF4ZxCMYCxxgQ-lDnbIBhK5zSBoMbTG8NShQDOAgQtYq9scroisFpjXJDHs69s8-9n-LiUz_mbl7Gb7-snXQgpdU1dn-OJZ99l8qSO-6crn_rWyF_Aa74SDI</recordid><startdate>19940110</startdate><enddate>19940110</enddate><creator>Hutchtmeier, W. K.</creator><creator>Bregman, J. N.</creator><creator>Hogg, D. E.</creator><creator>Roberts, M. S.</creator><general>EDP Sciences</general><scope>CYE</scope><scope>CYI</scope><scope>IQODW</scope></search><sort><creationdate>19940110</creationdate><title>The extent of CO in the early-type galaxy NGC 4472</title><author>Hutchtmeier, W. K. ; Bregman, J. N. ; Hogg, D. E. ; Roberts, M. S.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-n135t-efdb6801efbe0cb2188b0d729456eb9d6c86e3e2d090b0f54fc68465c68b955e3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1994</creationdate><topic>Astronomy</topic><topic>Earth, ocean, space</topic><topic>Elliptical galaxies</topic><topic>Exact sciences and technology</topic><topic>Normal galaxies. Extragalactic objects and systems (by type)</topic><topic>Stellar systems. Galactic and extragalactic objects and systems. The universe</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Hutchtmeier, W. K.</creatorcontrib><creatorcontrib>Bregman, J. N.</creatorcontrib><creatorcontrib>Hogg, D. E.</creatorcontrib><creatorcontrib>Roberts, M. S.</creatorcontrib><collection>NASA Scientific and Technical Information</collection><collection>NASA Technical Reports Server</collection><collection>Pascal-Francis</collection><jtitle>Astronomy and astrophysics (Berlin)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Hutchtmeier, W. K.</au><au>Bregman, J. N.</au><au>Hogg, D. E.</au><au>Roberts, M. S.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The extent of CO in the early-type galaxy NGC 4472</atitle><jtitle>Astronomy and astrophysics (Berlin)</jtitle><date>1994-01-10</date><risdate>1994</risdate><volume>281</volume><issue>2</issue><spage>327</spage><epage>330</epage><pages>327-330</pages><issn>0004-6361</issn><eissn>1432-0746</eissn><coden>AAEJAF</coden><abstract>NGC 4472, and E/SO system, is the earliest type normal galaxy with detected CO emission, and here we present additional radio observations in the lines of CO(1-0) and CO(2-1) to determine the distribution and internal properties of this gas. The original detection is reconfirmed, but observations at five surrounding locations and at two other locations in the galaxy do not show the gas to be extended; the total H2 gas mass is estimated to be 4 x 10(exp 7) solar mass. A high CO(1-0)/CO(2-1) brightness temperature ratio is found (greater than 3), which is indicative of subthermal excitation of the CO(2-1) line that can occur at low gas temperatures and low gas densities. Also, upper limits are given for the CO(2-1) fluxes in four other early-type galaxies.</abstract><cop>Legacy CDMS</cop><pub>EDP Sciences</pub><tpages>4</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0004-6361 |
| ispartof | Astronomy and astrophysics (Berlin), 1994-01, Vol.281 (2), p.327-330 |
| issn | 0004-6361 1432-0746 |
| language | eng |
| recordid | cdi_pascalfrancis_primary_3903385 |
| source | EDP Sciences; NASA Technical Reports Server; EZB-FREE-00999 freely available EZB journals |
| subjects | Astronomy Earth, ocean, space Elliptical galaxies Exact sciences and technology Normal galaxies. Extragalactic objects and systems (by type) Stellar systems. Galactic and extragalactic objects and systems. The universe |
| title | The extent of CO in the early-type galaxy NGC 4472 |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-25T17%3A21%3A32IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-nasa_pasca&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=The%20extent%20of%20CO%20in%20the%20early-type%20galaxy%20NGC%204472&rft.jtitle=Astronomy%20and%20astrophysics%20(Berlin)&rft.au=Hutchtmeier,%20W.%20K.&rft.date=1994-01-10&rft.volume=281&rft.issue=2&rft.spage=327&rft.epage=330&rft.pages=327-330&rft.issn=0004-6361&rft.eissn=1432-0746&rft.coden=AAEJAF&rft_id=info:doi/&rft_dat=%3Cnasa_pasca%3E19950043612%3C/nasa_pasca%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true |