RI photometry of cool dwarfs (Kirkpatrick+ 1994)

Details RI photometry of cool dwarfs (Kirkpatrick+ 1994) RI photometry of cool dwarfs (Kirkpatrick+ 1994)

Jan 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000ycat..20940749k&link_type=abstract

VizieR On-line Data Catalog: J/ApJS/94/749. Originally published in: 1994ApJS...94..749K

Computer Science

Stars: Dwarfs, Photometry: Ri, Stars: Late-Type

Scientific paper

The luminosity function at the end of the main sequence is determined from V, R, and I data taken by the CCD/Transit Instrument (CTI), a dedicated telescope surveying an 8.25' wide strip of sky centered at δ=+28°, thus sampling Galactic latitudes of +90° down to -35°. A selection of 133 objects chosen via R-I and V-I colors has been observed spectroscopically at the 4.5m Multiple Mirror Telescope to assess contributions by giants and subdwarfs and to verify that the reddest targets are objects of extremely late spectral class. Eighteen dwarfs of type M6 or later have been discovered, with the latest being of type M8.5. Data used for the determination of the luminosity function cover 27.3°2 down to a completeness limit of R=19.0. (2 data files).

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