L′ and M′ Photometry of Ultracool Dwarfs

@article{Golimowski2004LAM,
  title={L′ and M′ Photometry of Ultracool Dwarfs},
  author={David A. Golimowski and Sandy K. Leggett and Mark. S. Marley and X. L. Fan and Thomas R. Geballe and Gillian R. Knapp and Frederick John Vrba and Arne Anthon Henden and Christian B. Luginbuhl and Harry H. Guetter and Jeffrey A. Munn and Blaise Joseph Canzian and Wei Zheng and Zlatan I. Tsvetanov and Kuenley Chiu and Karl Glazebrook and Erik Andrew Hoversten and Donald P. Schneider and Jonathan Brinkmann},
  journal={The Astronomical Journal},
  year={2004},
  volume={127},
  pages={3516 - 3536}
}
We have compiled L′ (3.4–4.1 μm) and M′ (4.6–4.8 μm) photometry of 63 single and binary M, L, and T dwarfs obtained at the United Kingdom Infrared Telescope using the Mauna Kea Observatory filter set. This compilation includes new L′ measurements of eight L dwarfs and 13 T dwarfs and new M′ measurements of seven L dwarfs, five T dwarfs, and the M1 dwarf Gl 229A. These new data increase by factors of 0.6 and 1.6, respectively, the numbers of ultracool dwarfs (Teff ≲ 2400 K) for which L′ and M… 

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References

SHOWING 1-10 OF 100 REFERENCES

Infrared Photometry of Late-M, L, and T Dwarfs

We present ZJHKL′M′ photometry of a sample of 58 late M, L, and T dwarfs, most of which are identified from the Sloan Digital Sky Survey and the Two Micron All-Sky Survey. Near-infrared spectra and

Infrared Spectra and Spectral Energy Distributions of Late M and L Dwarfs

We have obtained 1.0-2.5 μm spectra at R ~ 600 of 14 disk dwarfs with spectral types M6-L7. For four of the dwarfs, we have also obtained infrared spectra at R ~ 3000 in several narrow intervals. In

Near-Infrared Photometry and Spectroscopy of L and T Dwarfs: The Effects of Temperature, Clouds, and Gravity

We present new JHK photometry on the MKO-NIR system and JHK spectroscopy for a large sample of L and T dwarfs. Photometry has been obtained for 71 dwarfs, and spectroscopy for 56. The sample

New Neighbors from 2MASS: Activity and Kinematics at the Bottom of the Main Sequence

We have combined 2MASS and POSS II data in a search for nearby ultracool (later than M6.5) dwarfs with Ks < 12. Spectroscopic follow-up observations identify 53 M7–M9.5 dwarfs and seven L dwarfs. The

Spectroscopic Classification of Late-M and L Field Dwarfs

We present spectra for 12 new ultracool dwarfs found in the DENIS infrared survey. Seven of them have spectral types at the bottom of the M-class (M8–M9.5), and the other five belong to the cooler

Astrometry and Photometry for Cool Dwarfs and Brown Dwarfs

Trigonometric parallax determinations are presented for 28 late-type dwarfs and brown dwarfs, including eight M dwarfs with spectral types between M7 and M9.5, 17 L dwarfs with spectral types between

JHK Magnitudes for L and T Dwarfs and Infrared Photometric Systems

In the last few years a significant population of ultracool L and T dwarfs has been discovered. With effective temperatures ranging from ∼2200 to 700 K, these objects emit most of their radiation in

Atmospheric Analysis of the M/L- and M/T-Dwarf Binary Systems LHS 102 and Gliese 229

We present 0.9–2.5 μm spectroscopy with R∼800 and 1.12–1.22 μm spectroscopy with R∼5800 for the M dwarfs Gl 229A and LHS 102A, and for the L dwarf LHS 102B. We also report IZJHKL′ photometry for both

L′ and M′ standard stars for the Mauna Kea Observatories Near-Infrared system

We present L′ and M′ photometry, obtained at the United Kingdom Infrared Telescope (UKIRT) using the Mauna Kea Observatories Near-Infrared (MKO-NIR) filter set, for 46 and 31 standard stars,

Keck Imaging of Binary L Dwarfs

Keck near-infrared imaging of three binary L dwarf systems indicates that binary companions to L dwarfs are common, that similar-mass systems predominate, and that their distribution peaks at radial distances in accord both with M dwarf binaries and with the radial location of Jovian planets in the authors' own solar system.
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