On a More Precise L-Rho Relation

Details On a More Precise L-Rho Relation On a More Precise L-Rho Relation

Jun 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987mnras.226..989p&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Vol. 226, NO.4/JUN15, P. 989, 1987

Astronomy and Astrophysics

Astronomy

4

Scientific paper

In a recent paper Lucey has demonstrated that a more accurate Lσ relation is obtained if a small fixed metric size aperture magnitude is used to define L, rather than a near total isophotal magnitude. This is shown to be expected on physical grounds since the aperture magnitude essentially measures the quantity Iere which is directly proportional to σ2(M/L)-1. The use of Iere as a distance indicator with minimum scatter is therefore suggested.

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