The Zero Point of Extinction toward Baade's Window from K Giants

Thumbnail Image

Files

fac_GouldA_TheAstrophysicalJournal_1998_492_778.pdf (193.83 KB)

Date

1998-01-10

Authors

Journal Title

Journal ISSN

Volume Title

Publisher

American Astronomical Society

Research Projects

Organizational Units

Journal Issue

Abstract

We measure the zero point of the Stanek extinction map by comparing the observed (V - K) colors of 206 K giant stars with their intrinsic (V - K)_0 colors as derived from their Hβ indices. We find that the zero point of the Stanek map should be changed by ΔA_V = -0.10 ± 0.06 mag, obtaining as a bonus a threefold reduction of the previous statistical error. The most direct way to test for systematic errors in this determination would be to conduct a parallel measurement based on the (V - K) colors of type ab RR Lyrae stars.

Description

Keywords

dust, extinction, Hertzsprung-Russell diagram, stars: late-type, stars: variables: other

Citation

Andrew Gould, Piotr Popowski, and Donald M. Terndrup, "The Zero Point of Extinction toward Baade's Window from K Giants," The Astrophysical Journal 492, no. 2 (1998), doi:10.1086/305062, http://iopscience.iop.org/0004-637X/492/2/778

URI

http://hdl.handle.net/1811/47490

Collections

Ohio State University Research and Scholarship