The Sun's Distance Above the Galactic Plane

Details The Sun's Distance Above the Galactic Plane The Sun's Distance Above the Galactic Plane

Nov 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995aj....110.2183h&link_type=abstract

Astronomical Journal v.110, p.2183

Astronomy and Astrophysics

Astronomy

47

Astrometry, Sun: General

Scientific paper

We have determined the Sun's distance (Zsun) from the galactic plane using optical star counts in 12 Palomar Sky Survey fields, six each at the North and South galactic poles. The star counts were made in t6 square degree regions at the center of each field in the O (blue) magnitude range 15-18. All stars with O - E color greater than 1.8 mag (B - V- 1.1 mag) were selected to isolate a sample of disk population stars in this magnitude range. The total counts show significantly more stars in the six fields at the SGP indicating that the Sun is above the galactic plane as defined by neutral hydrogen. The observed ratio of N(SGP)/N(NGP) is 1.11±0.O2 leading to Zsun=20.5±3.5 pc above the galactic midplane.

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