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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…
The Extended IRTF Spectral Library: Expanded coverage in metallicity, temperature, and surface gravity
Alexa Villaume, Charlie Conroy, Benjamin Johnson +3
We present a spectral library of 284 stars observed with the medium-resolution infrared spectrograph, SpeX, at the 3.0 meter NASA Infrared Telescope Facility (IRTF) on…
V4046 Sgr: Touchstone to Investigate Spectral Type Discrepancies for Pre-main Sequence Stars
Joel H. Kastner, Valerie Rapson, Benjamin Sargent +2
Determinations of the fundamental properties (e.g., masses and ages) of late-type, pre-main sequence (pre-MS) stars are complicated by the potential for significant discrepancies b…
PTF10nvg: An Outbursting Class I Protostar in the Pelican/North American Nebula
Kevin R. Covey, Lynne A. Hillenbrand, Adam A. Miller +28
During a synoptic survey of the North American Nebula region, the Palomar Transient Factory (PTF) detected an optical outburst (dubbed PTF10nvg) associated with the previously unst…
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…
The Infrared Telescope Facility (IRTF) Spectral Library: Cool Stars
J. T. Rayner, M. C. Cushing, W. D. Vacca
We present a 0.8 -5 micron spectral library of 210 cool stars observed at a resolving power of R = lambda / Delta lambda ~ 2000 with the medium-resolution infrared spectrograph, Sp…