Aug 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001noao.prop..150r&link_type=abstract
NOAO Proposal ID #2001B-0150
Other
Scientific paper
We are engaged in a long-term project which combines 2MASS and POSS II data with other catalogues to complete the census of M and L dwarfs within 20 parsecs of the Sun. Our current program utilises two techniques to identify nearby dwarfs with spectral type ≥M5: direct search of the 2MASS database for point sources with (J-K)> 1.1 and appropriate JHK magnitudes; and cross-referencing Luyten's NLTT catalogue against 2MASS, using (m_r-K) as a luminosity calibrator. Building on our initial observations, we have identified an all-sky sample of 500 (J-K)-selected late-M/early-L candidates, together with 600 NLTT dwarfs with 14 < m_r < 19.5. We propose to use intermediate resolution spectroscopy to determine accurate distances and luminosities, and characterise the level of chromospheric activity. Approximately two-thirds of the sample is accessible with either Goldcam on the 2.1-metre or the R-C Spectrograph on the CTIO 1.5-metre; for the remainder, we propose to use the R-C spectrographs on the KPNO and CTIO 4-metre telescopes. Our goal is a definitive determination of the stellar luminosity function at faint magnitudes, and hence the stellar mass function in the vicinity of the hydrogen-burning limit.
Cruz Kelle L.
Gizis John E.
Liebert James
Reid Iain Neill
No associations
LandOfFree
Finding the Neighbours does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Finding the Neighbours, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Finding the Neighbours will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-818770