The moth: an unusual circumstellar structure associated with HD 61005

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dc.contributor.authorHines, Dean C.
dc.contributor.authorSchneider, Glenn
dc.contributor.authorHollenbach, David
dc.contributor.authorMamajek, Eric E.
dc.contributor.authorHillenbrand, Lynne A.
dc.contributor.authorMetchev, Stanimir A.
dc.contributor.authorMeyer, Michael R.
dc.contributor.authorCarpenter, John M.
dc.contributor.authorMoro-Martin, Amaya
dc.contributor.authorSilverstone, Murray D.
dc.contributor.authorKim, Jinyoung Serena
dc.contributor.authorHenning, Thomas
dc.contributor.authorBouwman, Jeroen
dc.contributor.authorWolf, Sebastian
dc.contributor.otherUniversity of Arizona
dc.contributor.otherNational Aeronautics & Space Administration (NASA)
dc.contributor.otherNASA Ames Research Center
dc.contributor.otherHarvard University
dc.contributor.otherSmithsonian Astrophysical Observatory
dc.contributor.otherSmithsonian Institution
dc.contributor.otherCalifornia Institute of Technology
dc.contributor.otherUniversity of California System
dc.contributor.otherUniversity of California Los Angeles
dc.contributor.otherPrinceton University
dc.contributor.otherEureka Scientific
dc.contributor.otherMax Planck Society
dc.contributor.otherUniversity of Alabama Tuscaloosa
dc.date.accessioned2019-06-13T18:55:31Z
dc.date.available2019-06-13T18:55:31Z
dc.date.issued2007-11-21
dc.description.abstractWe present the discovery of an unusual spatially resolved circumstellar structure associated with the approximate to 90 Myr, nearby, G dwarf star HD 61005. Observations from the FEPS Spitzer Legacy Science survey reveal thermal emission in excess of expected stellar photospheric levels. Follow-up 0.1 '' resolution HST NICMOS coronagraphic images reveal scattered starlight <= 7 '' (similar to 240 AU) from the occulted star (1.1 mu m flux density = 18 +/- 3.3 mJy; and 0.77%+/- 0.16% starlight). The extremely high near-IR scattering fraction and IR excess luminosity f=L-IR/L-* approximate to 2x10(-3) suggests scattering particle sizes of order a <= 1.1 mu m/2 pi similar to 0.2 mu m comparable to the blowout size (a approximate to 0.3 mu m) due to radiation a pressure from the star. Dust-scattered starlight is traced inward to an instrumental limit of similar to 10 AU. The structure exhibits a strong asymmetry about its morphological major axis but is mirror-symmetric about its minor axis.en_US
dc.format.mimetypeapplication/pdf
dc.identifier.citationHines, D., et al. (2007): The Moth: An Unusual Circumstellar Structure Associated with HD 61005. The Astronomical Journal, 671(2). DOI: https://doi.org/10.1086/525016
dc.identifier.doi10.1086/525016
dc.identifier.orcidhttps://orcid.org/0000-0002-1493-300X
dc.identifier.orcidhttps://orcid.org/0000-0001-7841-3452
dc.identifier.orcidhttps://orcid.org/0000-0001-9504-8426
dc.identifier.orcidhttps://orcid.org/0000-0003-4757-2500
dc.identifier.orcidhttps://orcid.org/0000-0003-3050-8203
dc.identifier.orcidhttps://orcid.org/0000-0003-2251-0602
dc.identifier.urihttp://ir.ua.edu/handle/123456789/5746
dc.languageEnglish
dc.language.isoen_US
dc.publisherIOP Publishing
dc.subjectcircumstellar matter
dc.subjectinfrared : stars
dc.subjectplanetary systems : protoplanetary disks
dc.subjectstars : individual (HD 61005)
dc.subjectSOLAR-TYPE STARS
dc.subjectSUN-LIKE STARS
dc.subjectPLANETARY SYSTEMS FEPS
dc.subjectDEBRIS DISKS
dc.subjectINTERSTELLAR-MEDIUM
dc.subjectYOUNG STARS
dc.subjectEVOLUTION
dc.subjectDUST
dc.subjectDISCOVERY
dc.subjectSPITZER
dc.subjectAstronomy & Astrophysics
dc.titleThe moth: an unusual circumstellar structure associated with HD 61005en_US
dc.typetext
dc.typeArticle

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