The optical warp of M31

Details The optical warp of M31 The optical warp of M31

Mar 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...254..515i&link_type=abstract

Astrophysical Journal, Part 1, vol. 254, Mar. 15, 1982, p. 515, 516. Research supported by the Natural Sciences and Engineering

Astronomy and Astrophysics

Astrophysics

39

Andromeda Galaxy, Astronomical Photometry, Galactic Structure, Isophotes, Data Reduction, Schmidt Telescopes

Scientific paper

Digital stacking of Palomar Schmidt plates of M31 shows that the outermost isophotes of this galaxy are anti-symmetrically warped. The fact that this warp shows up in both yellow and red light suggests that it is produced by starlight rather than by emission nebulosity. This conjecture is supported by Baade's observations of the distribution of Population II giants in M31.

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