The nearby, young, isolated, dusty star HD 166191

Adam Schneider; Inseok Song; Carl Melis; B. Zuckerman; Mike Bessell; Tara Hufford; Sasha Hinkley

doi:10.1088/0004-637X/777/1/78

The nearby, young, isolated, dusty star HD 166191

Adam Schneider, Inseok Song, Carl Melis, B. Zuckerman, Mike Bessell, Tara Hufford, Sasha Hinkley

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17 Citations (Scopus)

Abstract

We report an in-depth study of the F8-type star HD 166191, identified in an ongoing survey for stars exhibiting infrared emission above their expected photospheres in the Wide-field Infrared Survey Explorer all-sky catalog. The fractional IR luminosity measured from 3.5 to 70 μm is exceptionally high (L _IR/L _bol 10%). Near-diffraction-limited imaging observations with the T-ReCS Si filter set on the Gemini South telescope and adaptive optics imaging with the NIRC2 Lp filter on the Keck II telescope confirmed that the excess emission coincides with the star. Si-band images show a strong solid-state emission feature at =10 μm. Theoretical evolutionary isochrones and optical spectroscopic observations indicate a stellar age in the range 10-100 Myr. The large dust mass seen in HD 166191's terrestrial planet zone is indicative of a recent collision between planetary embryos or massive ongoing collisional grinding associated with planet building.

Original language	English
Article number	78
Journal	Astrophysical Journal
Volume	777
Issue number	1
DOIs	https://doi.org/10.1088/0004-637X/777/1/78
Publication status	Published - 1 Nov 2013

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title = "The nearby, young, isolated, dusty star HD 166191",

abstract = "We report an in-depth study of the F8-type star HD 166191, identified in an ongoing survey for stars exhibiting infrared emission above their expected photospheres in the Wide-field Infrared Survey Explorer all-sky catalog. The fractional IR luminosity measured from 3.5 to 70 μm is exceptionally high (L IR/L bol 10%). Near-diffraction-limited imaging observations with the T-ReCS Si filter set on the Gemini South telescope and adaptive optics imaging with the NIRC2 Lp filter on the Keck II telescope confirmed that the excess emission coincides with the star. Si-band images show a strong solid-state emission feature at =10 μm. Theoretical evolutionary isochrones and optical spectroscopic observations indicate a stellar age in the range 10-100 Myr. The large dust mass seen in HD 166191's terrestrial planet zone is indicative of a recent collision between planetary embryos or massive ongoing collisional grinding associated with planet building.",

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T1 - The nearby, young, isolated, dusty star HD 166191

AU - Schneider, Adam

AU - Song, Inseok

AU - Melis, Carl

AU - Zuckerman, B.

AU - Bessell, Mike

AU - Hufford, Tara

AU - Hinkley, Sasha

PY - 2013/11/1

Y1 - 2013/11/1

N2 - We report an in-depth study of the F8-type star HD 166191, identified in an ongoing survey for stars exhibiting infrared emission above their expected photospheres in the Wide-field Infrared Survey Explorer all-sky catalog. The fractional IR luminosity measured from 3.5 to 70 μm is exceptionally high (L IR/L bol 10%). Near-diffraction-limited imaging observations with the T-ReCS Si filter set on the Gemini South telescope and adaptive optics imaging with the NIRC2 Lp filter on the Keck II telescope confirmed that the excess emission coincides with the star. Si-band images show a strong solid-state emission feature at =10 μm. Theoretical evolutionary isochrones and optical spectroscopic observations indicate a stellar age in the range 10-100 Myr. The large dust mass seen in HD 166191's terrestrial planet zone is indicative of a recent collision between planetary embryos or massive ongoing collisional grinding associated with planet building.

AB - We report an in-depth study of the F8-type star HD 166191, identified in an ongoing survey for stars exhibiting infrared emission above their expected photospheres in the Wide-field Infrared Survey Explorer all-sky catalog. The fractional IR luminosity measured from 3.5 to 70 μm is exceptionally high (L IR/L bol 10%). Near-diffraction-limited imaging observations with the T-ReCS Si filter set on the Gemini South telescope and adaptive optics imaging with the NIRC2 Lp filter on the Keck II telescope confirmed that the excess emission coincides with the star. Si-band images show a strong solid-state emission feature at =10 μm. Theoretical evolutionary isochrones and optical spectroscopic observations indicate a stellar age in the range 10-100 Myr. The large dust mass seen in HD 166191's terrestrial planet zone is indicative of a recent collision between planetary embryos or massive ongoing collisional grinding associated with planet building.

KW - circumstellar matter

KW - stars: individual (HD 166191)

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SN - 0004-637X

VL - 777

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1

M1 - 78

ER -

The nearby, young, isolated, dusty star HD 166191

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