Discovery of three very distant M and L dwarfs

Details Discovery of three very distant M and L dwarfs Discovery of three very distant M and L dwarfs

Oct 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998a%26a...338..127w&link_type=abstract

Astronomy and Astrophysics, v.338, p.127-131 (1998)

Astronomy and Astrophysics

Astrophysics

8

Stars: Individual: Ca09-Lms1 (J0913.5+4611), Ca16-Lms1 (J1625.0+5544), Ca16-Lms2 (J1623.9+5546), Stars: Low-Mass, Brown Dwarfs

Scientific paper

We report the serendipitous discovery of three very cool distant late type dwarfs. These low-mass stars were found in the 9h- and 16h-fields of the Calar Alto Deep Imaging Survey (CADIS) and named CA09-LMS1, CA16-LMS1 and CA16-LMS2. CA16-LMS1 is the latest object and has a spectral type of >M10 (L1 in the new spectral class L). The other two stars have spectral types of about M9 (CA16-LMS2) and M6.5 (CA09-LMS1). We derive distances of 1150+/-300 pc for CA09-LMS1, 330+/-80 pc for CA16-LMS1, and 120+/-30 pc for CA16-LMS2. The first two of these three objects are probably the most distant late-type M dwarfs for which optical spectra have been obtained.

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