Identification of the Microlens in Event MACHO-LMC-20

Identification of the Microlens in Event MACHO-LMC-20

We report on the identification of the lens responsible for microlensing event MACHO-LMC-20. As part of a Spitzer IRAC program conducting mid-infrared follow-up of the MACHO Large Magellanic Cloud microlensing fields, we discovered a significant flux excess at the position of the source star for thi...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:The Astrophysical journal 2006-12, Vol.652 (2), p.L97-L100
Hauptverfasser: Kallivayalil, Nitya, Patten, Brian M, Marengo, Massimo, Alcock, Charles, Werner, Michael W, Fazio, Giovanni G
Format: Artikel
Sprache:eng
Schlagworte:
Astronomy
Earth, ocean, space
Exact sciences and technology
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page L100
container_issue 2
container_start_page L97
container_title The Astrophysical journal
container_volume 652
creator Kallivayalil, Nitya
Patten, Brian M
Marengo, Massimo
Alcock, Charles
Werner, Michael W
Fazio, Giovanni G
description We report on the identification of the lens responsible for microlensing event MACHO-LMC-20. As part of a Spitzer IRAC program conducting mid-infrared follow-up of the MACHO Large Magellanic Cloud microlensing fields, we discovered a significant flux excess at the position of the source star for this event. These data, in combination with high-resolution near-infrared Magellan PANIC data, have allowed us to classify the lens as an early M dwarf in the thick disk of the Milky Way, at a distance of 62 kpc. This is only the second microlens to have been identified, the first also being a M dwarf star in the disk. Together, these two events are still consistent with the expected frequency of nearby stars in the Milky Way thin and thick disks acting as lenses.
doi_str_mv 10.1086/510293
format Article
fullrecord <record><control><sourceid>proquest_O3W</sourceid><recordid>TN_cdi_iop_primary_10_1086_510293</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>19487387</sourcerecordid><originalsourceid>FETCH-LOGICAL-c409t-b05e9f0015fa112532eab873c5311749ce8f4a3e0788e7cb09e1cd924b6b8c473</originalsourceid><addsrcrecordid>eNp90U1LAzEQBuAgCtaqv2E9qCCs5nOTHMtSbWFLL3oO2XSCke1u3WwF_70pLehBPc0cHt5hZhC6JPieYFU8CIKpZkdoRARTOWdCHv_oT9FZjG8YY061HiExX0E7BB-cHULXZp3PhlfIFsH1XQNtzEKbTT8SyRaTcrbMq0WZU3yOTrxtIlwc6hi9PE6fy1leLZ_m5aTKHcd6yGssQHuMifCWECoYBVsryZxghEiuHSjPLQMslQLpaqyBuJWmvC5q5bhkY3S7z9303fsW4mDWITpoGttCt41GckYkUUokefOvJJqnwUp-w7RgjD14s-nD2vafhmCzu5_Z3y_B60Oijc42vretC_FbK1awNDi5q70L3ebvrLtfTHqJ2b3EFIIaaiotzWbl2ReDYYJw</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>19487387</pqid></control><display><type>article</type><title>Identification of the Microlens in Event MACHO-LMC-20</title><source>Institute of Physics Open Access Journal Titles</source><creator>Kallivayalil, Nitya ; Patten, Brian M ; Marengo, Massimo ; Alcock, Charles ; Werner, Michael W ; Fazio, Giovanni G</creator><creatorcontrib>Kallivayalil, Nitya ; Patten, Brian M ; Marengo, Massimo ; Alcock, Charles ; Werner, Michael W ; Fazio, Giovanni G</creatorcontrib><description>We report on the identification of the lens responsible for microlensing event MACHO-LMC-20. As part of a Spitzer IRAC program conducting mid-infrared follow-up of the MACHO Large Magellanic Cloud microlensing fields, we discovered a significant flux excess at the position of the source star for this event. These data, in combination with high-resolution near-infrared Magellan PANIC data, have allowed us to classify the lens as an early M dwarf in the thick disk of the Milky Way, at a distance of 62 kpc. This is only the second microlens to have been identified, the first also being a M dwarf star in the disk. Together, these two events are still consistent with the expected frequency of nearby stars in the Milky Way thin and thick disks acting as lenses.</description><identifier>ISSN: 1538-4357</identifier><identifier>ISSN: 0004-637X</identifier><identifier>EISSN: 1538-4357</identifier><identifier>DOI: 10.1086/510293</identifier><identifier>CODEN: ASJOAB</identifier><language>eng</language><publisher>Chicago, IL: IOP Publishing</publisher><subject>Astronomy ; Earth, ocean, space ; Exact sciences and technology</subject><ispartof>The Astrophysical journal, 2006-12, Vol.652 (2), p.L97-L100</ispartof><rights>2007 INIST-CNRS</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c409t-b05e9f0015fa112532eab873c5311749ce8f4a3e0788e7cb09e1cd924b6b8c473</citedby><cites>FETCH-LOGICAL-c409t-b05e9f0015fa112532eab873c5311749ce8f4a3e0788e7cb09e1cd924b6b8c473</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://iopscience.iop.org/article/10.1086/510293/pdf$$EPDF$$P50$$Giop$$H</linktopdf><link.rule.ids>314,780,784,27628,27924,27925,53931</link.rule.ids><linktorsrc>$$Uhttp://iopscience.iop.org/1538-4357/652/2/L97$$EView_record_in_IOP_Publishing$$FView_record_in_$$GIOP_Publishing</linktorsrc><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&amp;idt=18363853$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Kallivayalil, Nitya</creatorcontrib><creatorcontrib>Patten, Brian M</creatorcontrib><creatorcontrib>Marengo, Massimo</creatorcontrib><creatorcontrib>Alcock, Charles</creatorcontrib><creatorcontrib>Werner, Michael W</creatorcontrib><creatorcontrib>Fazio, Giovanni G</creatorcontrib><title>Identification of the Microlens in Event MACHO-LMC-20</title><title>The Astrophysical journal</title><description>We report on the identification of the lens responsible for microlensing event MACHO-LMC-20. As part of a Spitzer IRAC program conducting mid-infrared follow-up of the MACHO Large Magellanic Cloud microlensing fields, we discovered a significant flux excess at the position of the source star for this event. These data, in combination with high-resolution near-infrared Magellan PANIC data, have allowed us to classify the lens as an early M dwarf in the thick disk of the Milky Way, at a distance of 62 kpc. This is only the second microlens to have been identified, the first also being a M dwarf star in the disk. Together, these two events are still consistent with the expected frequency of nearby stars in the Milky Way thin and thick disks acting as lenses.</description><subject>Astronomy</subject><subject>Earth, ocean, space</subject><subject>Exact sciences and technology</subject><issn>1538-4357</issn><issn>0004-637X</issn><issn>1538-4357</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2006</creationdate><recordtype>article</recordtype><recordid>eNp90U1LAzEQBuAgCtaqv2E9qCCs5nOTHMtSbWFLL3oO2XSCke1u3WwF_70pLehBPc0cHt5hZhC6JPieYFU8CIKpZkdoRARTOWdCHv_oT9FZjG8YY061HiExX0E7BB-cHULXZp3PhlfIFsH1XQNtzEKbTT8SyRaTcrbMq0WZU3yOTrxtIlwc6hi9PE6fy1leLZ_m5aTKHcd6yGssQHuMifCWECoYBVsryZxghEiuHSjPLQMslQLpaqyBuJWmvC5q5bhkY3S7z9303fsW4mDWITpoGttCt41GckYkUUokefOvJJqnwUp-w7RgjD14s-nD2vafhmCzu5_Z3y_B60Oijc42vretC_FbK1awNDi5q70L3ebvrLtfTHqJ2b3EFIIaaiotzWbl2ReDYYJw</recordid><startdate>20061201</startdate><enddate>20061201</enddate><creator>Kallivayalil, Nitya</creator><creator>Patten, Brian M</creator><creator>Marengo, Massimo</creator><creator>Alcock, Charles</creator><creator>Werner, Michael W</creator><creator>Fazio, Giovanni G</creator><general>IOP Publishing</general><general>University of Chicago Press</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TG</scope><scope>KL.</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope></search><sort><creationdate>20061201</creationdate><title>Identification of the Microlens in Event MACHO-LMC-20</title><author>Kallivayalil, Nitya ; Patten, Brian M ; Marengo, Massimo ; Alcock, Charles ; Werner, Michael W ; Fazio, Giovanni G</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c409t-b05e9f0015fa112532eab873c5311749ce8f4a3e0788e7cb09e1cd924b6b8c473</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2006</creationdate><topic>Astronomy</topic><topic>Earth, ocean, space</topic><topic>Exact sciences and technology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kallivayalil, Nitya</creatorcontrib><creatorcontrib>Patten, Brian M</creatorcontrib><creatorcontrib>Marengo, Massimo</creatorcontrib><creatorcontrib>Alcock, Charles</creatorcontrib><creatorcontrib>Werner, Michael W</creatorcontrib><creatorcontrib>Fazio, Giovanni G</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Meteorological &amp; Geoastrophysical Abstracts</collection><collection>Meteorological &amp; Geoastrophysical Abstracts - Academic</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>The Astrophysical journal</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Kallivayalil, Nitya</au><au>Patten, Brian M</au><au>Marengo, Massimo</au><au>Alcock, Charles</au><au>Werner, Michael W</au><au>Fazio, Giovanni G</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Identification of the Microlens in Event MACHO-LMC-20</atitle><jtitle>The Astrophysical journal</jtitle><date>2006-12-01</date><risdate>2006</risdate><volume>652</volume><issue>2</issue><spage>L97</spage><epage>L100</epage><pages>L97-L100</pages><issn>1538-4357</issn><issn>0004-637X</issn><eissn>1538-4357</eissn><coden>ASJOAB</coden><abstract>We report on the identification of the lens responsible for microlensing event MACHO-LMC-20. As part of a Spitzer IRAC program conducting mid-infrared follow-up of the MACHO Large Magellanic Cloud microlensing fields, we discovered a significant flux excess at the position of the source star for this event. These data, in combination with high-resolution near-infrared Magellan PANIC data, have allowed us to classify the lens as an early M dwarf in the thick disk of the Milky Way, at a distance of 62 kpc. This is only the second microlens to have been identified, the first also being a M dwarf star in the disk. Together, these two events are still consistent with the expected frequency of nearby stars in the Milky Way thin and thick disks acting as lenses.</abstract><cop>Chicago, IL</cop><pub>IOP Publishing</pub><doi>10.1086/510293</doi><oa>free_for_read</oa></addata></record>
fulltext fulltext_linktorsrc
identifier ISSN: 1538-4357
ispartof The Astrophysical journal, 2006-12, Vol.652 (2), p.L97-L100
issn 1538-4357
0004-637X
1538-4357
language eng
recordid cdi_iop_primary_10_1086_510293
source Institute of Physics Open Access Journal Titles
subjects Astronomy
Earth, ocean, space
Exact sciences and technology
title Identification of the Microlens in Event MACHO-LMC-20
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-24T13%3A31%3A29IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_O3W&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Identification%20of%20the%20Microlens%20in%20Event%20MACHO-LMC-20&rft.jtitle=The%20Astrophysical%20journal&rft.au=Kallivayalil,%20Nitya&rft.date=2006-12-01&rft.volume=652&rft.issue=2&rft.spage=L97&rft.epage=L100&rft.pages=L97-L100&rft.issn=1538-4357&rft.eissn=1538-4357&rft.coden=ASJOAB&rft_id=info:doi/10.1086/510293&rft_dat=%3Cproquest_O3W%3E19487387%3C/proquest_O3W%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=19487387&rft_id=info:pmid/&rfr_iscdi=true