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Infrared Absolute Calibration I: Comparison of Sirius with Fainter Calibration Stars
G. H. Rieke, K. Y. L. Su, G. C. Sloan +1
A challenge in absolute calibration is to relate very bright stars with physical flux measurements to faint ones within range of modern instruments, e.g. those on large groundbased…
Accurate Photometry of Saturated Stars Using the Point-Spread-Function Wing Technique with Spitzer
Kate Y. L. Su, G. H. Rieke, M. Marengo +1
We report Spitzer 3.6 and 4.5 m photometry of 11 bright stars relative to Sirius, exploiting the unique optical stability of the Spitzer Space Telescope point spread function (P…
Astro2020 Science White Paper: High-Resolution Spectroscopic Surveys of Ultracool Dwarf Stars & Brown Dwarfs
Adam Burgasser, Daniel Apai, Daniella Bardalez Gagliuffi +10
High resolution spectroscopy of the lowest-mass stars and brown dwarfs reveals their origins, multiplicity, compositions and physical properties, with implications for the star for…
Identification of WISE J000100.45+065259.6 as an M8.5+T5 Spectral Binary Candidate
Adam J. Burgasser, Christopher A. Theissen, Daniella C. Bardalez Gagliuffi +1
[not part of RNAAS note] We report the discovery of WISE J000100.45+065259.6 as a very low mass star/brown dwarf spectral binary candidate, on the basis of low resolution near-infr…
Spectral Variability of Two Rapidly Rotating Brown Dwarfs: 2MASS J08354256-0819237 and 2MASS J18212815+1414010
Everett Schlawin, Adam J. Burgasser, Theodora Karalidi +2
L dwarfs exhibit low-level, rotationally-modulated photometric variability generally associated with heterogeneous, cloud-covered atmospheres. The spectral character of these varia…
Characterizing the Cool KOIs. VI. H- and K-band Spectra of Kepler M Dwarf Planet-Candidate Hosts
Philip S. Muirhead, Juliette Becker, Gregory A. Feiden +12
We present H- and K-band spectra for late-type Kepler Objects of Interest (the "Cool KOIs"): low-mass stars with transiting-planet candidates discovered by NASA's Kepler Mission th…