Scale Heights of Non-Edge-on Spiral Galaxies

Details Scale Heights of Non-Edge-on Spiral Galaxies Scale Heights of Non-Edge-on Spiral Galaxies

Feb 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006chjaa...6...43h&link_type=abstract

Chinese Journal of Astronomy and Astrophysics, Volume 6, Issue 1, pp. 43-51 (2006).

Astronomy and Astrophysics

Astrophysics

4

Scientific paper

We present a method of calculating the scale height of non-edge-on spiral galaxies, together with a formula for errors. The method is based on solving Poisson's equation for a logarithmic disturbance of matter density in spiral galaxies. We show that the spiral arms can not extend to inside the ``forbidden radius'' r0, due to the effect of the finite thickness of the disk. The method is tested by re-calculating the scale heights of 71 northern spiral galaxies previously calculated by Ma, Peng & Gu. Our results differ from theirs by less than 9%. We also present the scale heights of a further 23 non-edge-on spiral galaxies.

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