Stellar and Circumstellar Properties of Class I Protostars (2009)
Prato, L., Lockhart, K. E., Johns-Krull, Christopher M., Rayner, John T.
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 spectral lines and...
Deep Infrared Imaging of the R Corona Australis Cloud Core (2007)
Bruce A. Wilking, Mark J. Mccaughrean, Michael G. Burton, Timothy Giblin, John T. Rayner, Hans Zinnecker
Preliminary analysis is presented for J, H, and K 0 images of the Corona Australis cloud core. Color-color and color-magnitude diagrams reveal relatively few new cluster members. We conclude that the...
Atmospheric Parameters of Field L and T Dwarfs (2007)
Cushing, Michael C., Marley, Mark S., Saumon, D., Kelly, Brandon C., Vacca, William D., Rayner, John T., ...
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, gravities, and...
An Infrared Spectroscopic Sequence of M, L and T Dwarfs (2004)
Cushing, Michael C., Rayner, John T., Vacca, William D.
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 nearly double the...
FeH absorption in the near-infrared spectra of late M and L dwarfs (2003)
Cushing, Michael C., Rayner, John T., Davis, Sumner P., Vacca, William D.
We present medium-resolution z-, J-, and H-band spectra of four late-type dwarfs with spectral types ranging from M8 to L7.5. In an attempt to determine the origin of numerous weak absorption...
A Method of Correcting Near-Infrared Spectra for Telluric Absorption (2002)
Vacca, William D., Cushing, Michael C., Rayner, John T.
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 close in airmass to...