S Ori 70: Diferenzas entre revisións
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Sen resumo de edición Etiqueta: edición de código 2017 |
Sen resumo de edición Etiqueta: edición de código 2017 |
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▲| names = Mayrit 520267<br/>S Ori 70<br/>S Ori J053810.1-023626<ref>{{Cite journal |bibcode=2005MNRAS.356...89K |title=Membership, binarity and accretion among very low-mass stars and brown dwarfs of the σ Orionis cluster |journal=Monthly Notices of the Royal Astronomical Society |volume=356 |issue=1 |pages=89 |last1=Kenyon |first1=M. J. |last2=Jeffries |first2=R. D. |last3=Naylor |first3=Tim |last4=Oliveira |first4=J. M. |last5=Maxted |first5=P. F. L. |year=2005 |doi=10.1111/j.1365-2966.2004.08455.x |doi-access=free }}</ref><ref>{{Cite journal |bibcode=2006ApJ...637.1067B |title=A Unified Near-Infrared Spectral Classification Scheme for T Dwarfs |journal=The Astrophysical Journal |volume=637 |issue=2 |pages=1067 |last1=Burgasser |first1=Adam J. |last2=Geballe |first2=T. R. |last3=Leggett |first3=S. K. |last4=Kirkpatrick |first4=J. Davy |last5=Golimowski |first5=David A. |year=2006 |doi=10.1086/498563 |doi-access=free }}</ref>
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| Simbad = Mayrit+520267
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'''S Ori 70''' or '''S Ori J053810.1-023626''' is a mid-T type [[astronomy|astronomical]] object in the foreground of the [[σ Orionis cluster]], which is approximately 1,150 [[light-year]]s from [[Earth]]. It was discovered on November 24, 2002 by M. R. Zapatero Osorio and E. L. Martin's team at the [[Roque de los Muchachos Observatory]]. It has yet to be determined if it is a field [[brown dwarf]] or a 3-million-year-old planet that is part of a cluster. Near-infrared [[spectroscopy]] images taken 3 years after its discovery led to the first motion measurements for the object. Its behavior is significantly different from what may be expected; it was further described as either a [[Gravity|low-gravity]] [[atmosphere]] or an atmosphere with [[metallicity]]. The object's small proper motion suggests that it is farther away than expected if it were a single field T dwarf.
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