Discovery of a huge young stellar object interaction region in Camelopardalis

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dc.contributor.authorMcCall, ML
dc.contributor.authorButa, RJ
dc.contributor.authorFoster, TJ
dc.contributor.authorHuchtmeier, W
dc.contributor.authorHuchra, J
dc.contributor.otherYork University - Canada
dc.contributor.otherUniversity of Alabama Tuscaloosa
dc.contributor.otherUniversity of Alberta
dc.contributor.otherMax Planck Society
dc.contributor.otherHarvard University
dc.contributor.otherSmithsonian Astrophysical Observatory
dc.contributor.otherSmithsonian Institution
dc.date.accessioned2019-06-17T14:12:46Z
dc.date.available2019-06-17T14:12:46Z
dc.date.issued2004
dc.description.abstractDuring the course of a wide-field VI survey of galaxies in the IC 342/Maffei Group, a large nebula, which looks like an inclined disk with a jetlike plume emerging from it, was discovered in Camelopardalis. The object is most prominent in I. The predominating disk component is 6.'8 across, which corresponds to 4.0 +/- 1.6 pc at the estimated distance of 2.0 +/- 0.8 kpc (the Perseus Arm). The plume extends 3.'8 ( 2.2 pc) outward from the core along a direction that is about 20degrees from the minor axis of the disk. The disk lies along the edge of a filament of dust and molecular gas in the Milky Way. The plume points toward the core of the filament. No large-scale emission is seen at Halpha, and the nebula is invisible in Two Micron All Sky Survey (2MASS) images. About 30" from the center of the disk is IRAS 04261+6339, which is a pair of unresolved Halpha sources whose IRAS colors and spectra reveal them to be young stellar objects (YSOs). The northern of the two exhibits a near-infrared tail, which is 15" (0.15 pc) long in H and directed 66degrees away from the plume. Although the stars are exposed, as in Class II YSOs, the spectral energy distribution of the pair rises beyond 2 mum, typical of Class I systems. It appears that they are transitional YSOs, with characteristics similar to those of Holoea (IRAS 05327+ 3404). The total brightness of the plume plus disk exceeds that of the stars by 1.6 mag in I, yet the V - I color is bluer by only 0.50 mag. Thus, the nebula cannot be a consequence of reflection, even allowing for differential extinction. It is tentatively identified as a remnant of an outflow from a binary YSO, glowing from the photoluminescence of silicon nanoparticles.en_US
dc.format.mimetypeapplication/pdf
dc.identifier.citationMcCall, M., et al. (2004): Discovery of a Huge Young Stellar Object Interaction Region in Camelopardalis. The Astronomical Journal, 128(1). DOI: 10.1086/421370
dc.identifier.doi10.1086/421370
dc.identifier.urihttp://ir.ua.edu/handle/123456789/5766
dc.languageEnglish
dc.language.isoen_US
dc.publisherUniversity of Chicago Press
dc.subjectdust, extinction
dc.subjectgalaxies : general
dc.subjectgalaxies : individual : UGCA 92
dc.subjectinfrared : general
dc.subjectstars : pre-main-sequence
dc.subjectEXTENDED RED EMISSION
dc.subjectMILKY-WAY
dc.subjectSILICON NANOPARTICLES
dc.subjectSTANDARD STARS
dc.subjectRADIO-SOURCES
dc.subjectCO SURVEY
dc.subjectEXTINCTION
dc.subjectGALAXIES
dc.subjectDISTANCE
dc.subjectCATALOG
dc.subjectAstronomy & Astrophysics
dc.titleDiscovery of a huge young stellar object interaction region in Camelopardalisen_US
dc.typetext
dc.typeArticle
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