J
John Stauffer
Researcher at Harvard University
Publications - 202
Citations - 10214
John Stauffer is an academic researcher from Harvard University. The author has contributed to research in topics: Stars & Pleiades. The author has an hindex of 51, co-authored 200 publications receiving 9795 citations. Previous affiliations of John Stauffer include California Institute of Technology & Max Planck Society.
Papers
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Journal ArticleDOI
The Wavelength Dependence of Interstellar Extinction from 1.25 to 8.0 microns Using GLIMPSE Data
Remy Indebetouw,John S. Mathis,Brian Babler,Marilyn R. Meade,C. Watson,B. A. Whitney,M. J. Wolff,Mark Wolfire,T. M. Bania,Robert A. Benjamin,Dan P. Clemens,Martin Cohen,John M. Dickey,James M. Jackson,Henry A. Kobulnicky,A. P. Marston,E. P. Mercer,John Stauffer,Susan R. Stolovy,Ed Churchwell +19 more
TL;DR: In this article, the extinction ratio between two filters, e.g. A(J)/A(K), is calculated from the color distributions of observed stars, and the mean values of the color excess ratios (A(λ)-A(k))/(A(J)-A (K)) are calculated from those measured ratios.
Journal ArticleDOI
Spitzer Space Telescope study of disks in the young $\sigma$ Orionis cluster
Jesús Hernández,Lee Hartmann,T. Megeath,Robert Gutermuth,James Muzerolle,Nuria Calvet,A. K. Vivas,Cesar Briceno,Lori Allen,John Stauffer,Erick T. Young,G. G. Fazio +11 more
TL;DR: In this paper, the spectral energy distribution (SED) slopes in the IRAC spectral range were used to place objects in several classes: non-excess stars, stars with optically thick disks, class I (protostellar) candidates, and stars with ''evolved disks''.
Journal ArticleDOI
The Spitzer Space Telescope Survey of the Orion A & B Molecular Clouds - Part I: A Census of Dusty Young Stellar Objects and a Study of their Mid-IR Variability
S. T. Megeath,Robert Gutermuth,James Muzerolle,E. Kryukova,K. M. Flaherty,Joseph L. Hora,Lori Allen,Lee Hartmann,Phil Myers,Judy Pipher,John Stauffer,Erick T. Young,G. G. Fazio +12 more
TL;DR: In this article, a survey of the Orion A and B molecular clouds undertaken with the IRAC and MIPS instruments onboard Spitzer is presented, which includes the Orion Nebula Cluster, the Lynds 1641, 1630 and 1622 dark clouds, and the NGC 2023, 2024, 2068 and 2071 nebulae.
Journal ArticleDOI
Strong water absorption in the dayside emission spectrum of the planet HD 189733b.
Carl J. Grillmair,Adam Burrows,David Charbonneau,Lee Armus,John Stauffer,Victoria S. Meadows,Jeffrey Van Cleve,Kaspar von Braun,D. Levine +8 more
TL;DR: The detection of strong water absorption in a high-signal-to-noise, mid-infrared emission spectrum of the planet itself is reported, finding both a strong downturn in the flux ratio below 10 µm and discrete spectral features that are characteristic of strong absorption by water vapour.
Journal ArticleDOI
A Spitzer view of protoplanetary disks in the gamma Velorum cluster
Jesús Hernández,Jesús Hernández,Lee Hartmann,Nuria Calvet,R. D. Jeffries,Robert A. Gutermuth,James Muzerolle,John Stauffer +7 more
TL;DR: In this article, the authors presented new Spitzer Space Telescope observations of stars in the young ~5 Myr gamma Velorum stellar cluster, and selected 579 stars as candidate members of the cluster.