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The Two Micron All Sky Survey (2MASS)
- M. Skrutskie, R. Cutri, +28 authors S. Wheelock
- Physics
- 1 February 2006
Between 1997 June and 2001 February the Two Micron All Sky Survey (2MASS) collected 25.4 Tbytes of raw imagingdatacovering99.998%ofthecelestialsphereinthenear-infraredJ(1.25 � m),H(1.65 �…
2MASS All Sky Catalog of point sources.
- R. Cutri, M. Skrutskie, +22 authors N. Zacarias
- Physics
- 1 June 2003
Dwarfs Cooler Than M: The Definition of Spectral Type L Using Discoveries from the 2-Micron All-Sky Survey (2MASS)
- J. Kirkpatrick, I. Reid, +7 authors M. Skrutskie
- Physics
- 10 July 1999
Before the 2-Micron All-Sky Survey (2MASS) began, only six objects were known with spectral types later than M9.5 V. In the first 371 sq. deg. of actual 2MASS survey data, we have identified another…
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…
M-subdwarfs: spectroscopic classification and the metallicity scale
- J. Gizis
- Physics
- 26 November 1996
We present a spectroscopic classification system for M-dwarfs and M-subdwarfs based on quantitative measures of TiO and CaH features in the region 6200 - 7400 Angstroms. Our sample of cool stars…
67 Additional L Dwarfs Discovered by the Two Micron All Sky Survey
- J. Kirkpatrick, I. Reid, +6 authors Rik J. Williams
- Physics
- 22 March 2000
We present JHKs photometry, far red spectra, and spectral classifications for an additional 67 L dwarfs discovered by the Two Micron All Sky Survey. One of the goals of this new search was to locate…
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 6 A) ultracool M dwarfs are consistent with an ordinary old disk stellar population, while…
The Palomar/MSU Nearby Star Spectroscopic Survey. IV. The Luminosity Function in the Solar Neighborhood and M Dwarf Kinematics*
We have used new astrometric and spectroscopic observations to refine the volume-complete sample of M dwarfs defined in previous papers in this series. With the addition of Hipparcos astrometry, our…
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