A dual origin for Neptune's carbon monoxide?
Heterodyne observations of Neptune have provided a measurement of the CO(2–1) line profile with a total bandpass of almost 8 GHz and a resolution of 4 MHz. The lineshape indicates that the CO mole fraction in Neptune's atmosphere is not uniform, but increases by a factor of ~2 from the troposph...
Gespeichert in:
Veröffentlicht in: | Astronomy and astrophysics (Berlin) 2005-02, Vol.430 (2), p.L37-L40 |
---|---|
Hauptverfasser: | , , |
Format: | Artikel |
Sprache: | eng |
Schlagworte: | |
Online-Zugang: | Volltext |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
container_end_page | L40 |
---|---|
container_issue | 2 |
container_start_page | L37 |
container_title | Astronomy and astrophysics (Berlin) |
container_volume | 430 |
creator | Lellouch, E. Moreno, R. Paubert, G. |
description | Heterodyne observations of Neptune have provided a measurement of the CO(2–1) line profile with a total bandpass of almost 8 GHz and a resolution of 4 MHz. The lineshape indicates that the CO mole fraction in Neptune's atmosphere is not uniform, but increases by a factor of ~2 from the troposphere/lower stratosphere (0.5 ppm at $p>20$ mbar) to the upper stratosphere (1 ppm at $p |
doi_str_mv | 10.1051/0004-6361:200400127 |
format | Article |
fullrecord | <record><control><sourceid>proquest_hal_p</sourceid><recordid>TN_cdi_hal_primary_oai_HAL_hal_03742754v1</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>17332109</sourcerecordid><originalsourceid>FETCH-LOGICAL-c458t-a5913b7aa74777ae7ba8ec7385ecb46c2294a32e5961c80276b044d68fc3e4da3</originalsourceid><addsrcrecordid>eNqF0E1LAzEQBuAgCtbqL_CyFxXB1XxtJutFSrFWLIpQEbyE2TSrq9tNTVqp_94tlXr0lEnyzDC8hBwyes5oxi4opTJVQrFL3laUMg5bpMOk4CkFqbZJZyN2yV6M7-2VMy065KyXTBZYJz5Ur1WTlD4k9242XzTuJCYWQ-GbZOobv6wm7mqf7JRYR3fwe3bJ0-B63B-mo4eb235vlFqZ6XmKWc5EAYggAQAdFKidBaEzZwupLOe5RMFdlitmNeWgCirlROnSCicnKLrkdD33DWszC9UUw7fxWJlhb2RWb1SA5JDJL9ba47WdBf-5cHFuplW0rq6xcX4RDdcZozmofyEDIXhLWyjW0AYfY3DlZgVGzSpuswrTrMI0m7jbrqPf8Rgt1mXAxlbxr1VJobjmrUvXropzt9z8Y_gwCgRkRtNn04fB3Yt-zM1Y_ABPx4rB</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>17332109</pqid></control><display><type>article</type><title>A dual origin for Neptune's carbon monoxide?</title><source>Bacon EDP Sciences France Licence nationale-ISTEX-PS-Journals-PFISTEX</source><source>EDP Sciences</source><source>Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals</source><creator>Lellouch, E. ; Moreno, R. ; Paubert, G.</creator><creatorcontrib>Lellouch, E. ; Moreno, R. ; Paubert, G.</creatorcontrib><description>Heterodyne observations of Neptune have provided a measurement of the CO(2–1) line profile with a total bandpass of almost 8 GHz and a resolution of 4 MHz. The lineshape indicates that the CO mole fraction in Neptune's atmosphere is not uniform, but increases by a factor of ~2 from the troposphere/lower stratosphere (0.5 ppm at $p>20$ mbar) to the upper stratosphere (1 ppm at $p<20$ mbar). This indicates the existence of both external and internal sources of CO. The equivalent flux associated with the external source is ~$1\times10^8$ cm-2 s-1. We propose that the stratospheric CO results from a large (2 km) cometary impact that occurred ~200 years ago, although there remains problems with this hypothesis.</description><identifier>ISSN: 0004-6361</identifier><identifier>EISSN: 1432-0746</identifier><identifier>EISSN: 1432-0756</identifier><identifier>DOI: 10.1051/0004-6361:200400127</identifier><identifier>CODEN: AAEJAF</identifier><language>eng</language><publisher>Les Ulis: EDP Sciences</publisher><subject>Astrophysics ; Physics ; planets and satellites: Neptune ; radio-lines: solar system</subject><ispartof>Astronomy and astrophysics (Berlin), 2005-02, Vol.430 (2), p.L37-L40</ispartof><rights>2005 INIST-CNRS</rights><rights>Distributed under a Creative Commons Attribution 4.0 International License</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c458t-a5913b7aa74777ae7ba8ec7385ecb46c2294a32e5961c80276b044d68fc3e4da3</citedby><cites>FETCH-LOGICAL-c458t-a5913b7aa74777ae7ba8ec7385ecb46c2294a32e5961c80276b044d68fc3e4da3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,776,780,881,3714,27901,27902</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=16436282$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://hal.science/hal-03742754$$DView record in HAL$$Hfree_for_read</backlink></links><search><creatorcontrib>Lellouch, E.</creatorcontrib><creatorcontrib>Moreno, R.</creatorcontrib><creatorcontrib>Paubert, G.</creatorcontrib><title>A dual origin for Neptune's carbon monoxide?</title><title>Astronomy and astrophysics (Berlin)</title><description>Heterodyne observations of Neptune have provided a measurement of the CO(2–1) line profile with a total bandpass of almost 8 GHz and a resolution of 4 MHz. The lineshape indicates that the CO mole fraction in Neptune's atmosphere is not uniform, but increases by a factor of ~2 from the troposphere/lower stratosphere (0.5 ppm at $p>20$ mbar) to the upper stratosphere (1 ppm at $p<20$ mbar). This indicates the existence of both external and internal sources of CO. The equivalent flux associated with the external source is ~$1\times10^8$ cm-2 s-1. We propose that the stratospheric CO results from a large (2 km) cometary impact that occurred ~200 years ago, although there remains problems with this hypothesis.</description><subject>Astrophysics</subject><subject>Physics</subject><subject>planets and satellites: Neptune</subject><subject>radio-lines: solar system</subject><issn>0004-6361</issn><issn>1432-0746</issn><issn>1432-0756</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><recordid>eNqF0E1LAzEQBuAgCtbqL_CyFxXB1XxtJutFSrFWLIpQEbyE2TSrq9tNTVqp_94tlXr0lEnyzDC8hBwyes5oxi4opTJVQrFL3laUMg5bpMOk4CkFqbZJZyN2yV6M7-2VMy065KyXTBZYJz5Ur1WTlD4k9242XzTuJCYWQ-GbZOobv6wm7mqf7JRYR3fwe3bJ0-B63B-mo4eb235vlFqZ6XmKWc5EAYggAQAdFKidBaEzZwupLOe5RMFdlitmNeWgCirlROnSCicnKLrkdD33DWszC9UUw7fxWJlhb2RWb1SA5JDJL9ba47WdBf-5cHFuplW0rq6xcX4RDdcZozmofyEDIXhLWyjW0AYfY3DlZgVGzSpuswrTrMI0m7jbrqPf8Rgt1mXAxlbxr1VJobjmrUvXropzt9z8Y_gwCgRkRtNn04fB3Yt-zM1Y_ABPx4rB</recordid><startdate>20050201</startdate><enddate>20050201</enddate><creator>Lellouch, E.</creator><creator>Moreno, R.</creator><creator>Paubert, G.</creator><general>EDP Sciences</general><scope>BSCLL</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TG</scope><scope>KL.</scope><scope>7U5</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>1XC</scope></search><sort><creationdate>20050201</creationdate><title>A dual origin for Neptune's carbon monoxide?</title><author>Lellouch, E. ; Moreno, R. ; Paubert, G.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c458t-a5913b7aa74777ae7ba8ec7385ecb46c2294a32e5961c80276b044d68fc3e4da3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2005</creationdate><topic>Astrophysics</topic><topic>Physics</topic><topic>planets and satellites: Neptune</topic><topic>radio-lines: solar system</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Lellouch, E.</creatorcontrib><creatorcontrib>Moreno, R.</creatorcontrib><creatorcontrib>Paubert, G.</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Hyper Article en Ligne (HAL)</collection><jtitle>Astronomy and astrophysics (Berlin)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Lellouch, E.</au><au>Moreno, R.</au><au>Paubert, G.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A dual origin for Neptune's carbon monoxide?</atitle><jtitle>Astronomy and astrophysics (Berlin)</jtitle><date>2005-02-01</date><risdate>2005</risdate><volume>430</volume><issue>2</issue><spage>L37</spage><epage>L40</epage><pages>L37-L40</pages><issn>0004-6361</issn><eissn>1432-0746</eissn><eissn>1432-0756</eissn><coden>AAEJAF</coden><abstract>Heterodyne observations of Neptune have provided a measurement of the CO(2–1) line profile with a total bandpass of almost 8 GHz and a resolution of 4 MHz. The lineshape indicates that the CO mole fraction in Neptune's atmosphere is not uniform, but increases by a factor of ~2 from the troposphere/lower stratosphere (0.5 ppm at $p>20$ mbar) to the upper stratosphere (1 ppm at $p<20$ mbar). This indicates the existence of both external and internal sources of CO. The equivalent flux associated with the external source is ~$1\times10^8$ cm-2 s-1. We propose that the stratospheric CO results from a large (2 km) cometary impact that occurred ~200 years ago, although there remains problems with this hypothesis.</abstract><cop>Les Ulis</cop><pub>EDP Sciences</pub><doi>10.1051/0004-6361:200400127</doi><oa>free_for_read</oa></addata></record> |
fulltext | fulltext |
identifier | ISSN: 0004-6361 |
ispartof | Astronomy and astrophysics (Berlin), 2005-02, Vol.430 (2), p.L37-L40 |
issn | 0004-6361 1432-0746 1432-0756 |
language | eng |
recordid | cdi_hal_primary_oai_HAL_hal_03742754v1 |
source | Bacon EDP Sciences France Licence nationale-ISTEX-PS-Journals-PFISTEX; EDP Sciences; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals |
subjects | Astrophysics Physics planets and satellites: Neptune radio-lines: solar system |
title | A dual origin for Neptune's carbon monoxide? |
url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-02-02T16%3A16%3A43IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_hal_p&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=A%20dual%20origin%20for%20Neptune's%20carbon%20monoxide?&rft.jtitle=Astronomy%20and%20astrophysics%20(Berlin)&rft.au=Lellouch,%20E.&rft.date=2005-02-01&rft.volume=430&rft.issue=2&rft.spage=L37&rft.epage=L40&rft.pages=L37-L40&rft.issn=0004-6361&rft.eissn=1432-0746&rft.coden=AAEJAF&rft_id=info:doi/10.1051/0004-6361:200400127&rft_dat=%3Cproquest_hal_p%3E17332109%3C/proquest_hal_p%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=17332109&rft_id=info:pmid/&rfr_iscdi=true |