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29 papers
The Ultracool SpeXtroscopic Survey. I. Volume-Limited Spectroscopic Sample and Luminosity Function of M7L5 Ultracool Dwarfs
Daniella C. Bardalez Gagliuffi, Adam J. Burgasser, Sarah J. Schmidt +9
We present a volume-limited, spectroscopically-verified sample of M7L5 ultracool dwarfs within 25\,pc. The sample contains 410 sources, of which have trigonometric distan…
A Candidate Wide Brown Dwarf Binary in the Argus Association: 2MASS J14504216-7841413 and 2MASS J14504113-7841383
Adam J. Burgasser, Dagny L. Looper, J. Davy Kirkpatrick
[not part of Research Note] We report the discovery of a widely-separated low-mass binary as a candidate member of the 40 Myr Argus Association. Resolved imaging and astromet…
BANYAN. IX. The Initial Mass Function and Planetary-Mass Object Space Density of the TW Hya Association
Jonathan Gagné, Jacqueline K. Faherty, Eric E. Mamajek +15
A determination of the initial mass function (IMF) of the current, incomplete census of the 10 Myr-old TW Hya association (TWA) is presented. This census is built from a literature…
Fundamental Parameters and Spectral Energy Distributions of Young and Field Age Objects with Masses Spanning the Stellar to Planetary Regime
Joseph C. Filippazzo, Emily L. Rice, Jacqueline Faherty +3
We combine optical, near-infrared and mid-infrared spectra and photometry to construct expanded spectral energy distributions (SEDs) for 145 field age (\textgreater 500 Myr) and 53…
Constraints on the binary Properties of mid to late T dwarfs from Hubble Space Telescope WFC3 Observations
M. Aberasturi, A. J. Burgasser, A. Mora +4
We used HST/WFC3 observations of a sample of 26 nearby (20 pc) mid to late T dwarfs to search for cooler companions and measure the multiplicity statistics of brown dwarfs. Ti…
SpeX Spectroscopy of Unresolved Very Low Mass Binaries. II. Identification of Fourteen Candidate Binaries with Late-M/Early-L and T Dwarf Components
Daniella C. Bardalez Gagliuffi, Adam J. Burgasser, Christopher R. Gelino +7
Multiplicity is a key statistic for understanding the formation of very low mass (VLM) stars and brown dwarfs. Currently, the separation distribution of VLM binaries remains poorly…