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Discovery of three very distant M and L dwarfs

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Date

1998

Authors

Wolf, C.
Mundt, R.
Thompson, D.
Chaffee, F.
Beckwith, S. V.W.
Fockenbrock, R.
Fried, J.
Hippelein, H.
Huang, J. S.
Von Kuhlmann, B.

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Abstract

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±300pc 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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Stars: individual: CA09-LMS1 (J0913.5+4611); CA16-LMS1 (J1625.0+5544); CA16-LMS2 (J1623.9+5546), Stars: low-mass, brown dwarfs

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https://hdl.handle.net/1885/733803511

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ANU Research Publications

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Astronomy and Astrophysics

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