Interstellar Group : Star Formation & Protoplanetary Disks
Star Formation: From the Massive to the Minute
Star Formation Group
Brown Dwarfs and Sub-Brown Dwarfs
Origins of Transitional Disks
Classical T-Tauri Stars
Gas, Ice, and Dust in Protostellar Environments
Herschel Open Time Program
(FU Orionis Objects Surveyed with Herschel)
Herschel Key Program: Dust, Ice, and Gas in Time
Spitzer Space Telescope; Star and Planet Formation
Neal Evans, Keely Finkelstein, Paul Harvey, Daniel Jaffe, John Lacy, John Scalo
Molecular clouds; star formation; millimeter, submillimeter, and infrared astronomy.
Interstellar, Star Formation & Protoplanetary Disks, Spitzer Legacy Project: c2d, Spitzer Legacy Project: Gould's Belt
Star Formation: Galactic and Extragalactic, Galaxy Formation and Evolution, Astronomy Education
Extragalactic, Star Formation (Extragalactic), Star Formation & Protoplanetary Disks
Senior Research Scientist
Infrared studies of the interstellar medium; star formation; infrared imaging.
Interstellar, Star Formation & Protoplanetary Disks, Spitzer Legacy Project: Gould's Belt
Infrared spectroscopy of young stars, protostars, young planetary systems, and star forming clouds; physics of the dense interstellar medium; observations of young brown dwarfs. Instrumentation for infrared spectroscopy. Fabrication of diffractive devices for ground and space based spectroscopy of astronomical objects and greenhouse gases in the Earth's atmosphere.
Interstellar, HII Regions & Planetary Nebulae, Star Formation & Protoplanetary Disks, Spitzer Legacy Project: c2d, Instrumentation & Device Development, EXES: mid-IR spectrograph, GMTNIRS, IGRINS, Micromachined Silicon Diffractive Optics
Infrared astronomical spectroscopy; infrared studies of interstellar molecules; studies of ionized gas in the Galactic Center; development of high-resolution infrared spectrographs.
Interstellar, HII Regions & Planetary Nebulae, Star Formation & Protoplanetary Disks, Spitzer Legacy Project: Gould's Belt, Instrumentation & Device Development, EXES: mid-IR spectrograph
Star formation; interstellar medium; turbulence; galaxy evolution; complex systems; astrobiology.
Planetary Systems, Atmospheres & Life, Theory, Astrobiology, Planet Formation, ISM and Star Formation, Milky Way Evolution, Star Formation & Protoplanetary Disks
SEDs with stellar atmosphere and disk models for log(L*/Lsol)≤ − 1.8. In each panel, the blue open and filled
circles show the observed and dereddened data, respectively. The grey solid line shows the SED of the stellar atmosphere model
(Allard et al. 2001; Hauschildt et al. 1999). The stellar atmospheres shown here have the values of Teff and log(g) listed in
Table 6, and are superposed (not fit) onto the data for the cloud distances listed in Table 2. The black solid line is the
predicted SED of a face-on, flared disk with an inner radius equal to the stellar radius (Ri = R*). The black dashed line is
the predicted SED of a face-on, flat disk with Ri = R*. The green line denotes the best fit to the data and is solid for flared
disk models and dashed for flat disk models, as listed in Table 6. Source #11 is best-fit by a flat, face-on disk with Ri = R*.
Increased inner radii are required for #1 (Ri = 4 R*) and #13 (Ri = 3 R*). Inclined disks
with Ri = R* are required for #5, #7,
and #18 (i = 60°). Inclined disk (i = 60°) with large inner radii (Ri = 3 R*) are required for #14 and #17.
Young, Low-mass Brown Dwarfs with Mid-Infrared Excesses