The bulge and the warp of NGC 7814: stars, gas and dust.

Details The bulge and the warp of NGC 7814: stars, gas and dust. The bulge and the warp of NGC 7814: stars, gas and dust.

Apr 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995a%26a...296l..13l&link_type=abstract

Astronomy and Astrophysics, v.296, p.L13

Astronomy and Astrophysics

Astrophysics

19

Galaxies: Ngc 7814, Ism, Spiral, Halos, Dark Matter

Scientific paper

We present a very deep optical observation of the outer regions of the edge-on galaxy NGC 7814 in the V and I bands. We show that its outer bulge shows departures from the r^1/4^ law and becomes redder at radii larger then 3'; this may indicate than the outer regions contain only very low-mass stars. The stellar disk presents a well-detected skewed warp. Our first attempt to determine the extinction by dust in the outer regions by measuring the statistical reddening of distant background galaxies is rather inconclusive, although it suggests a still large dust-to-gas ratio in the outskirts of the stellar disk.

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