Výsledky vyhledávání

Understanding the Clouds on VHS1256b

Autor: Kadin Worthen, Christine Chen, Cicero Lu, Beth Sargent, Casey Lisse, Greg Sloan, Jacqueline Faherty, Isabel Rebollido, Genaro Suarez, Brittany Miles, Simon Petrus, Johanna Vos, Sasha Hinkley

One of the biggest challenges to understanding exoplanet and brown dwarf atmospheres is understanding their cloud properties (composition, particle size, etc.). In substellar companions with effective temperatures between 1200-1700K, silicates are pr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0d153c56854a9eb8dcb125a15a0f75c7

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Dust and gas in carbon stars towards the Galactic halo

Autor: Eric Lagadec, Greg Sloan, J. R. Houck, Nicolas Mauron, Albert A. Zijlstra

Publikováno v: Monthly Notices of the Royal Astronomical Society. 427:2588-2596

We present Spitzer IRS spectra of four carbon stars located in the Galactic Halo and the thick disc. The spectra display typical features of carb on stars with SiC dust emission and C2H2 molecular absorption. Dust radiative transfer models and infrar

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7b5b5a3701717f4bea06f7c796b46982
https://doi.org/10.1111/j.1365-2966.2012.21874.x

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Moderate‐ResolutionSpitzerInfrared Spectrograph Observations of M, L, and T Dwarfs

Autor: Mark S. Marley, S. K. Leggett, J. Davy Kirkpatrick, Didier Saumon, John C. Wilson, Greg Sloan, Michael C. Cushing, A. K. Mainzer, Thomas L. Roellig

Publikováno v: The Astrophysical Journal. 662:1245-1253

We present 10 - 19 um moderate resolution spectra of ten M dwarfs, one L dwarf, and two T dwarf systems obtained with the Infrared Spectrograph (IRS) onboard the Spitzer Space Telescope. The IRS allows us to examine molecular spectroscopic features/l

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5d00b993f898c68670935a29d481b568
https://doi.org/10.1086/516561

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An atlas of bright star spectra in the near infrared from Cassini-VIMS

Autor: Paul Stewart, Matthew M. Hedman, Philip D. Nicholson, Peter G. Tuthill, Greg Sloan

We present the Cassini Atlas Of Stellar Spectra (CAOSS), comprised of near-infrared low-resolution spectra of bright stars recovered from space-based observations by the Cassini spacecraft. The 65 stellar targets in the atlas are predominately M, K a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::669cc769f7c3b97ce836a0febf640635

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ASpitzerInfrared Spectrograph Spectral Sequence of M, L, and T Dwarfs

Autor: John C. Wilson, J. D. Kirkpatrick, Mark S. Marley, J. van Cleve, A. K. Mainzer, Greg Sloan, S. K. Leggett, Michael C. Cushing, T. L. Roellig, J. R. Houck, Didier Saumon

Publikováno v: The Astrophysical Journal. 648:614-628

We present the first mid-infrared spectra of brown dwarfs, together with observations of a low-mass star. Our targets are the M3.5 dwarf GJ 1001A, the L8 dwarf DENIS-P J0255-4700, and the T1/T6 binary system epsilon Indi Ba/Bb. As expected, the mid-i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ee21f62026b0eb0288efdc6bbd36d715
https://doi.org/10.1086/505637

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Spitzer IRS Spectra of Young Stars Near the Hydrogen-burning Mass Limit

Autor: Greg Sloan, Terry Herter, Joel D. Green, Dan M. Watson, Ben Sargent, Lee Hartmann, Luke D. Keller, K. I. Uchida, Paola D'Alessio, Kevin Luhman, Nuria Calvet, Joan Najita, William J. Forrest, Elise Furlan

Publikováno v: The Astrophysical Journal. 621:L129-L132

We present Spitzer Infrared Spectrograph measurements for two young stars near the hydrogen-burning mass limit in the Taurus star-forming region. While one of the objects, V410 X-ray 3, displays no mid-infrared excess, the other one, V410 Anon 13, sh

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f70029630ee60076d9e428408c3427bf
https://doi.org/10.1086/429273

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The State of Protoplanetary Material 10 Million years after Stellar Formation: Circumstellar Disks in the TW Hydrae Association

Publikováno v: The Astrophysical Journal Supplement Series. 154:439-442

We have used the Spitzer Infrared Spectrograph to observe seven members of the TW Hya association, the nearest stellar association whose age ($\sim$ 10 Myr) is similar to the timescales thought to apply to planet formation and disk dissipation. Only

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1e18f73a2c8fe41aaabc9351950ba6a8
https://doi.org/10.1086/422888

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Spitzer Infrared Spectrograph (IRS) Mapping of the Inner Kiloparsec of NGC 253: Spatial Distribution of the [Ne iii ], Polycyclic Aromatic Hydrocarbon 11.3 Micron, and H 2 (0–0) S (1) lines and a Gradient in the [Ne iii ]/[Ne ii ] Line Ratio

Autor: Jeronimo Bernard-Salas, Lee Armus, Vassilis Charmandaris, Daniel Devost, Bernhard R. Brandl, Greg Sloan, James R. Houck, Henrik Spoon, Donald J. Barry

Publikováno v: The Astrophysical Journal Supplement Series. 154:242-247

We present our early results of the mapping of the nucleus of the starburst galaxy NGC 253 and its immediate surroundings using the Infrared Spectrograph onboard the Spitzer Space Telescope. The map is centered on the nucleus of the galaxy and spans

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8bc004414e35ede5b7d61f852472eb20
https://doi.org/10.1086/423035

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