NEAR-INFRARED CIRCULAR POLARIZATION IMAGES OF NGC 6334-V
We present results from deep imaging linear and circular polarimetry of the massive star-forming region NGC 6334-V. These observations show high degrees of circular polarization (CP), as much as 22% in the K sub(s) band, in the infrared nebula associated with the outflow. The CP has an asymmetric po...
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| Veröffentlicht in: | Astrophysical journal. Letters 2013-03, Vol.765 (1), p.1-6 |
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| container_title | Astrophysical journal. Letters |
| container_volume | 765 |
| creator | Kwon, Jungmi Tamura, Motohide Lucas, Phil W Hashimoto, Jun Kusakabe, Nobuhiko Kandori, Ryo Nakajima, Yasushi Nagayama, Takahiro Nagata, Tetsuya Hough, James H |
| description | We present results from deep imaging linear and circular polarimetry of the massive star-forming region NGC 6334-V. These observations show high degrees of circular polarization (CP), as much as 22% in the K sub(s) band, in the infrared nebula associated with the outflow. The CP has an asymmetric positive/negative pattern and is very extended (~80" or 0.65 pc). Both the high CP and its extended size are larger than those seen in the Orion CP region. Three-dimensional Monte Carlo light-scattering models are used to show that the high CP may be produced by scattering from the infrared nebula followed by dichroic extinction by an optically thick foreground cloud containing aligned dust grains. Our results show not only the magnetic field orientation of around young stellar objects, but also the structure of circumstellar matter such as outflow regions and their parent molecular cloud along the line of sight. The detection of the large and extended CP in this source and the Orion nebula may imply the CP origin of the biological homochirality on Earth. |
| doi_str_mv | 10.1088/2041-8205/765/1/L6 |
| format | Article |
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These observations show high degrees of circular polarization (CP), as much as 22% in the K sub(s) band, in the infrared nebula associated with the outflow. The CP has an asymmetric positive/negative pattern and is very extended (~80" or 0.65 pc). Both the high CP and its extended size are larger than those seen in the Orion CP region. Three-dimensional Monte Carlo light-scattering models are used to show that the high CP may be produced by scattering from the infrared nebula followed by dichroic extinction by an optically thick foreground cloud containing aligned dust grains. Our results show not only the magnetic field orientation of around young stellar objects, but also the structure of circumstellar matter such as outflow regions and their parent molecular cloud along the line of sight. 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Letters</title><description>We present results from deep imaging linear and circular polarimetry of the massive star-forming region NGC 6334-V. These observations show high degrees of circular polarization (CP), as much as 22% in the K sub(s) band, in the infrared nebula associated with the outflow. The CP has an asymmetric positive/negative pattern and is very extended (~80" or 0.65 pc). Both the high CP and its extended size are larger than those seen in the Orion CP region. Three-dimensional Monte Carlo light-scattering models are used to show that the high CP may be produced by scattering from the infrared nebula followed by dichroic extinction by an optically thick foreground cloud containing aligned dust grains. Our results show not only the magnetic field orientation of around young stellar objects, but also the structure of circumstellar matter such as outflow regions and their parent molecular cloud along the line of sight. The detection of the large and extended CP in this source and the Orion nebula may imply the CP origin of the biological homochirality on Earth.</description><subject>ASTROPHYSICS, COSMOLOGY AND ASTRONOMY</subject><subject>ASYMMETRY</subject><subject>Circular polarization</subject><subject>Clouds</subject><subject>DUSTS</subject><subject>Infrared</subject><subject>LIGHT SCATTERING</subject><subject>MAGNETIC FIELDS</subject><subject>Molecular structure</subject><subject>MONTE CARLO METHOD</subject><subject>Monte Carlo methods</subject><subject>NEAR INFRARED RADIATION</subject><subject>NEBULAE</subject><subject>Orion nebula</subject><subject>Outflow</subject><subject>POLARIMETRY</subject><subject>POLARIZATION</subject><subject>STARS</subject><subject>Three dimensional</subject><subject>THREE-DIMENSIONAL CALCULATIONS</subject><issn>2041-8205</issn><issn>2041-8213</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><recordid>eNqNkE1Lw0AQhhdRsFb_gKeAFy8x-5Hd7B5DTGsgJhJbD16WZDvBSNvUbHrov3dLi2cv8w7Dw8D7IHRP8BPBUgYUh8SXFPMgEjwgQS4u0OR8JOzyb8f8Gt1Y-40xxYLICZJFGld-VsyquEqfvSSrkmUeV95b6Wb2GS-ysvCy13ievnvlzCvmiScYC_2PW3TV1msLd-ecouUsXSQvfl7OsyTOfcMxHv2a17BqoA6pMhxU3YCiRjUrYIq1lHMiwRXgoWpZ1OJGGBcNC0FJUCvatmyKHk5_ezt22ppuBPNl-u0WzKipK4dlRBz1eKJ2Q_-zBzvqTWcNrNf1Fvq91UREkWKRlPwfqJBUSEyVQ-kJNUNv7QCt3g3dph4OmmB99K6PWvVRq3beNdG5YL9MZ25c</recordid><startdate>20130301</startdate><enddate>20130301</enddate><creator>Kwon, Jungmi</creator><creator>Tamura, Motohide</creator><creator>Lucas, Phil W</creator><creator>Hashimoto, Jun</creator><creator>Kusakabe, Nobuhiko</creator><creator>Kandori, Ryo</creator><creator>Nakajima, Yasushi</creator><creator>Nagayama, Takahiro</creator><creator>Nagata, Tetsuya</creator><creator>Hough, James H</creator><scope>AAYXX</scope><scope>CITATION</scope><scope>7TG</scope><scope>KL.</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>OTOTI</scope></search><sort><creationdate>20130301</creationdate><title>NEAR-INFRARED CIRCULAR POLARIZATION IMAGES OF NGC 6334-V</title><author>Kwon, Jungmi ; Tamura, Motohide ; Lucas, Phil W ; Hashimoto, Jun ; Kusakabe, Nobuhiko ; Kandori, Ryo ; Nakajima, Yasushi ; Nagayama, Takahiro ; Nagata, Tetsuya ; Hough, James H</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c500t-a5aedbea429c5e9abe92c9bde393f25518e108549f37f0b6c37fb34e98e9d2ff3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>ASTROPHYSICS, COSMOLOGY AND ASTRONOMY</topic><topic>ASYMMETRY</topic><topic>Circular polarization</topic><topic>Clouds</topic><topic>DUSTS</topic><topic>Infrared</topic><topic>LIGHT SCATTERING</topic><topic>MAGNETIC FIELDS</topic><topic>Molecular structure</topic><topic>MONTE CARLO METHOD</topic><topic>Monte Carlo methods</topic><topic>NEAR INFRARED RADIATION</topic><topic>NEBULAE</topic><topic>Orion nebula</topic><topic>Outflow</topic><topic>POLARIMETRY</topic><topic>POLARIZATION</topic><topic>STARS</topic><topic>Three dimensional</topic><topic>THREE-DIMENSIONAL CALCULATIONS</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kwon, Jungmi</creatorcontrib><creatorcontrib>Tamura, Motohide</creatorcontrib><creatorcontrib>Lucas, Phil W</creatorcontrib><creatorcontrib>Hashimoto, Jun</creatorcontrib><creatorcontrib>Kusakabe, Nobuhiko</creatorcontrib><creatorcontrib>Kandori, Ryo</creatorcontrib><creatorcontrib>Nakajima, Yasushi</creatorcontrib><creatorcontrib>Nagayama, Takahiro</creatorcontrib><creatorcontrib>Nagata, Tetsuya</creatorcontrib><creatorcontrib>Hough, James H</creatorcontrib><collection>CrossRef</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>OSTI.GOV</collection><jtitle>Astrophysical journal. Letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kwon, Jungmi</au><au>Tamura, Motohide</au><au>Lucas, Phil W</au><au>Hashimoto, Jun</au><au>Kusakabe, Nobuhiko</au><au>Kandori, Ryo</au><au>Nakajima, Yasushi</au><au>Nagayama, Takahiro</au><au>Nagata, Tetsuya</au><au>Hough, James H</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>NEAR-INFRARED CIRCULAR POLARIZATION IMAGES OF NGC 6334-V</atitle><jtitle>Astrophysical journal. Letters</jtitle><date>2013-03-01</date><risdate>2013</risdate><volume>765</volume><issue>1</issue><spage>1</spage><epage>6</epage><pages>1-6</pages><issn>2041-8205</issn><eissn>2041-8213</eissn><abstract>We present results from deep imaging linear and circular polarimetry of the massive star-forming region NGC 6334-V. These observations show high degrees of circular polarization (CP), as much as 22% in the K sub(s) band, in the infrared nebula associated with the outflow. The CP has an asymmetric positive/negative pattern and is very extended (~80" or 0.65 pc). Both the high CP and its extended size are larger than those seen in the Orion CP region. Three-dimensional Monte Carlo light-scattering models are used to show that the high CP may be produced by scattering from the infrared nebula followed by dichroic extinction by an optically thick foreground cloud containing aligned dust grains. Our results show not only the magnetic field orientation of around young stellar objects, but also the structure of circumstellar matter such as outflow regions and their parent molecular cloud along the line of sight. The detection of the large and extended CP in this source and the Orion nebula may imply the CP origin of the biological homochirality on Earth.</abstract><cop>United States</cop><doi>10.1088/2041-8205/765/1/L6</doi><tpages>6</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | ASTROPHYSICS, COSMOLOGY AND ASTRONOMY ASYMMETRY Circular polarization Clouds DUSTS Infrared LIGHT SCATTERING MAGNETIC FIELDS Molecular structure MONTE CARLO METHOD Monte Carlo methods NEAR INFRARED RADIATION NEBULAE Orion nebula Outflow POLARIMETRY POLARIZATION STARS Three dimensional THREE-DIMENSIONAL CALCULATIONS |
| title | NEAR-INFRARED CIRCULAR POLARIZATION IMAGES OF NGC 6334-V |
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