Publications (9)
An Infrared Spectroscopic Sequence of M, L and T Dwarfs
Michael C. Cushing, John T. Rayner, William D. Vacca
We present a 0.6-4.1 micron spectroscopic sequence of M, L, and T dwarfs. The spectra have R~2000 from 0.9 to 2.4 microns and R=2500-200 from 2.9 to 4.1 microns. These new data nea…
Stellar and Circumstellar Properties of Class I Protostars
L. Prato, K. E. Lockhart, Christopher M. Johns-Krull +1
We present a study of the stellar and circumstellar properties of Class I sources using low-resolution (R~1000) near-infrared K- and L-band spectroscopy. We measure prominent spect…
The kinematics and excitation of infrared water vapor emission from planet-forming disks: results from spectrally-resolved surveys and guidelines for JWST spectra
Andrea Banzatti, Klaus M. Pontoppidan, José Pérez Chávez +19
This work presents ground-based spectrally-resolved water emission at R = 30000-100000 over infrared wavelengths covered by JWST (2.9-12.8 m). Two new surveys with iSHELL and V…
ULAS J141623.94+134836.3: a Blue T Dwarf Companion to a Blue L Dwarf
Adam J. Burgasser, Dagny L. Looper, John T. Rayner
We confirm the substellar nature of ULAS J141623.94+134836.3, a common proper motion companion to the blue L dwarf SDSS J141624.08+134826.7 identified by Burningham et al. and Scho…
Design and Performance of the Upgraded Mid-InfraRed Spectrometer and Imager (MIRSI) on the NASA Infrared Telescope Facility
Joseph L. Hora, David E. Trilling, Andy J. Lopez-Oquendo +12
We describe the new design and current performance of the Mid-InfraRed Spectrometer and Imager (MIRSI) on the NASA Infrared Telescope Facility (IRTF). The system has been converted…
A Method of Correcting Near-Infrared Spectra for Telluric Absorption
William D. Vacca, Michael C. Cushing, John T. Rayner
We present a method for correcting near-infrared medium-resolution spectra for telluric absorption. The method makes use of a spectrum of an A0V star, observed near in time and clo…
Scanning disk rings and winds in CO at 0.01-10 au: a high-resolution -band spectroscopy survey with IRTF-iSHELL
Andrea Banzatti, Kirsten M. Abernathy, Sean Brittain +11
We present an overview and first results from a -band spectroscopic survey of planet-forming disks performed with iSHELL on IRTF, using two slits that provide resolving power R…
TANSPEC: TIFR-ARIES Near Infrared Spectrometer
Saurabh Sharma, Devendra K. Ojha, Arpan Ghosh +23
We present the design and performance of the TANSPEC, a medium-resolution m cryogenic spectrometer and imager, now in operation at the 3.6-m Devasthal Optical Telescop…
Atmospheric Parameters of Field L and T Dwarfs
Michael C. Cushing, Mark S. Marley, D. Saumon +6
We present an analysis of the 0.95-14.5 micron spectral energy distributions of nine field ultracool dwarfs with spectral types ranging from L1 to T4.5. Effective temperatures, gra…