The warp of the Galactic stellar disk detected in IRAS source counts

Details The warp of the Galactic stellar disk detected in IRAS source counts The warp of the Galactic stellar disk detected in IRAS source counts

Jun 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...341l..13d&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 341, June 1, 1989, p. L13-L16. Research supported by NASA, Califo

Astronomy and Astrophysics

Astronomy

47

Infrared Sources (Astronomy), Milky Way Galaxy, Galactic Structure, Hydrogen, Infrared Astronomy Satellite, Mass Distribution

Scientific paper

About 90,000 IRAS point sources have been used as disk tracers in order to explore the possibility of warp in the Galactic stellar disk. The results imply that the Galactic stellar disk is warped at large radii in a way similar to the H-I layer, and that the warp is an important characteristic of the Galaxy as a whole. It is suggested that the warp may be a long-lasting phenomenon, possibly caused by asymmetries of the mass distribution in the outer regions of the Galactic dark halo.

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