Subdwarfs Luminosity Function

Details Subdwarfs Luminosity Function Subdwarfs Luminosity Function

Dec 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jkas...24..161l&link_type=abstract

Journal of the Korean Astronomical Society, vol. 24, no. 1, p. 161-171

Astronomy and Astrophysics

Astronomy

5

Scientific paper

We have derived the luminosity function for subdwarfs on the basis of the proper motion data in LHS Catalogue, utilizing the reduced proper motion dia- gram for the selection of subdwarfs and the hybrid method combining the mean absolute magnitude method and V/V_m method to estimate the distance and densi- ty of subdwarfs. The luminosity function found here os almost flat, showing a very slow increase up to M_v = 9 or M_B = 10, and the overall halo density is larger than those derived by Schmidt (1975), Chiu (1980), Reid (1984), Lee (1985), and Dawson (1986), but smaller than that by Eggen (1983). Comparison with 1/100 of disk stellar luminosity function implies that no conclusive dip in the halo luminosity function is found.

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