Astro-1 ultraviolet imaging of the 30 Doradus and SN 1987A fields with the Ultraviolet Imaging Telescope
A preliminary analysis of Ultraviolet Imaging Telescope (UIT) images in the 30 Doradus region is reported. Photometry was obtained for the 30 Doradus cluster and its UV-bright core, R136, in various UIT bandpasses. It is found that about 14 percent of the total FUV light and about 16 percent of the...
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| Veröffentlicht in: | The Astrophysical journal 1992-08, Vol.395 (1), p.L29-L32 |
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| container_title | The Astrophysical journal |
| container_volume | 395 |
| creator | Cheng, Kwang-Ping Michalitsianos, Andrew G. Hintzen, Paul Bohlin, Ralph C. O'Connell, Robert W. Cornett, Robert H. Roberts, Morton S. Smith, Andrew M. Smith, Eric P. Stecher, Theodore P. |
| description | A preliminary analysis of Ultraviolet Imaging Telescope (UIT) images in the 30 Doradus region is reported. Photometry was obtained for the 30 Doradus cluster and its UV-bright core, R136, in various UIT bandpasses. It is found that about 14 percent of the total FUV light and about 16 percent of the total near-UV light of the 3-arcmin diameter 30 Doradus cluster originates from the region within 5 arcsec of R136. The UV magnitudes and colors of R136 and other known O and Wolf-Rayet WN stars in the same field were measured. The UIT data, combined with published observations at longer wavelengths, indicate that R136a1, the brightest component of R136, is not a supermassive stars. A qualitative comparison between the UIT images, Einstein X-ray data, IRAS HiRes images, and ground-based CCD images in forbidden O III 5007 A, H-alpha, B, R, U, and Stromgren u is performed. The extended diffuse UV feature detected in the UIT images is correlated with the IR structure seen in the IRAS 60-micron HiRes image, which suggests the existence of large amounts of widely distributed dust in this region. |
| doi_str_mv | 10.1086/186481 |
| format | Article |
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Photometry was obtained for the 30 Doradus cluster and its UV-bright core, R136, in various UIT bandpasses. It is found that about 14 percent of the total FUV light and about 16 percent of the total near-UV light of the 3-arcmin diameter 30 Doradus cluster originates from the region within 5 arcsec of R136. The UV magnitudes and colors of R136 and other known O and Wolf-Rayet WN stars in the same field were measured. The UIT data, combined with published observations at longer wavelengths, indicate that R136a1, the brightest component of R136, is not a supermassive stars. A qualitative comparison between the UIT images, Einstein X-ray data, IRAS HiRes images, and ground-based CCD images in forbidden O III 5007 A, H-alpha, B, R, U, and Stromgren u is performed. The extended diffuse UV feature detected in the UIT images is correlated with the IR structure seen in the IRAS 60-micron HiRes image, which suggests the existence of large amounts of widely distributed dust in this region.</description><identifier>ISSN: 0004-637X</identifier><identifier>EISSN: 1538-4357</identifier><identifier>DOI: 10.1086/186481</identifier><identifier>CODEN: ASJOAB</identifier><language>eng</language><publisher>Legacy CDMS: University of Chicago Press</publisher><subject>Astronomy ; Astrophysics ; Earth, ocean, space ; Exact sciences and technology ; Normal galaxies. Extragalactic objects and systems (by type) ; Stellar systems. Galactic and extragalactic objects and systems. 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Photometry was obtained for the 30 Doradus cluster and its UV-bright core, R136, in various UIT bandpasses. It is found that about 14 percent of the total FUV light and about 16 percent of the total near-UV light of the 3-arcmin diameter 30 Doradus cluster originates from the region within 5 arcsec of R136. The UV magnitudes and colors of R136 and other known O and Wolf-Rayet WN stars in the same field were measured. The UIT data, combined with published observations at longer wavelengths, indicate that R136a1, the brightest component of R136, is not a supermassive stars. A qualitative comparison between the UIT images, Einstein X-ray data, IRAS HiRes images, and ground-based CCD images in forbidden O III 5007 A, H-alpha, B, R, U, and Stromgren u is performed. The extended diffuse UV feature detected in the UIT images is correlated with the IR structure seen in the IRAS 60-micron HiRes image, which suggests the existence of large amounts of widely distributed dust in this region.</description><subject>Astronomy</subject><subject>Astrophysics</subject><subject>Earth, ocean, space</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. 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The universe</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Cheng, Kwang-Ping</creatorcontrib><creatorcontrib>Michalitsianos, Andrew G.</creatorcontrib><creatorcontrib>Hintzen, Paul</creatorcontrib><creatorcontrib>Bohlin, Ralph C.</creatorcontrib><creatorcontrib>O'Connell, Robert W.</creatorcontrib><creatorcontrib>Cornett, Robert H.</creatorcontrib><creatorcontrib>Roberts, Morton S.</creatorcontrib><creatorcontrib>Smith, Andrew M.</creatorcontrib><creatorcontrib>Smith, Eric P.</creatorcontrib><creatorcontrib>Stecher, Theodore P.</creatorcontrib><collection>NASA Scientific and Technical Information</collection><collection>NASA Technical Reports Server</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><jtitle>The Astrophysical journal</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Cheng, Kwang-Ping</au><au>Michalitsianos, Andrew G.</au><au>Hintzen, Paul</au><au>Bohlin, Ralph C.</au><au>O'Connell, Robert W.</au><au>Cornett, Robert H.</au><au>Roberts, Morton S.</au><au>Smith, Andrew M.</au><au>Smith, Eric P.</au><au>Stecher, Theodore P.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Astro-1 ultraviolet imaging of the 30 Doradus and SN 1987A fields with the Ultraviolet Imaging Telescope</atitle><jtitle>The Astrophysical journal</jtitle><date>1992-08-10</date><risdate>1992</risdate><volume>395</volume><issue>1</issue><spage>L29</spage><epage>L32</epage><pages>L29-L32</pages><issn>0004-637X</issn><eissn>1538-4357</eissn><coden>ASJOAB</coden><abstract>A preliminary analysis of Ultraviolet Imaging Telescope (UIT) images in the 30 Doradus region is reported. Photometry was obtained for the 30 Doradus cluster and its UV-bright core, R136, in various UIT bandpasses. It is found that about 14 percent of the total FUV light and about 16 percent of the total near-UV light of the 3-arcmin diameter 30 Doradus cluster originates from the region within 5 arcsec of R136. The UV magnitudes and colors of R136 and other known O and Wolf-Rayet WN stars in the same field were measured. The UIT data, combined with published observations at longer wavelengths, indicate that R136a1, the brightest component of R136, is not a supermassive stars. A qualitative comparison between the UIT images, Einstein X-ray data, IRAS HiRes images, and ground-based CCD images in forbidden O III 5007 A, H-alpha, B, R, U, and Stromgren u is performed. The extended diffuse UV feature detected in the UIT images is correlated with the IR structure seen in the IRAS 60-micron HiRes image, which suggests the existence of large amounts of widely distributed dust in this region.</abstract><cop>Legacy CDMS</cop><pub>University of Chicago Press</pub><doi>10.1086/186481</doi></addata></record> |
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| ispartof | The Astrophysical journal, 1992-08, Vol.395 (1), p.L29-L32 |
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| source | NASA Technical Reports Server; Alma/SFX Local Collection |
| subjects | Astronomy Astrophysics Earth, ocean, space Exact sciences and technology Normal galaxies. Extragalactic objects and systems (by type) Stellar systems. Galactic and extragalactic objects and systems. The universe |
| title | Astro-1 ultraviolet imaging of the 30 Doradus and SN 1987A fields with the Ultraviolet Imaging Telescope |
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