Computer Science
Scientific paper
Dec 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997hst..prop.7830j&link_type=abstract
HST Proposal ID #7830
Computer Science
Hst Proposal Id #7830 Cool Stars Low-Mass Stars
Scientific paper
Over the last decade there has been considerable debate on two major issues in the low-mass star literature: {1} the effective temperature scale for M dwarfs and its relation to mass and luminosity and {2} the conversion from an absolute magnitude in some passband to a bolometric magnitude. These issues are central to the important questions in the study of low-mass stars. In particular, is the object under scrutiny a brown dwarf and what are the luminosity and mass functions for low-mass stars? In order to effectively calibrate our understanding of the lowest mass stars and to be able to reliably tackle the above questions it is vital to have a library of the highest quality infrared spectra of KNOWN-MASS, binary components and the necessity to have reliable spectra through the water vapour bands it would be extremely difficult to obtain such high-quality observations from the ground, although such observations should be straightforward from space with the NICMOS instrument on the HST. I propose that 0.8 - 2.5 Mum spectra be taken for a target list of known- mass M dwarf binaries. This will enable the reliable calibration of the relationship between temperature, luminosity and mass down to the hydrogen-burning limit.
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