The signatures of the shock wave in the spiral ARM S4 of the andromeda galaxy

Details The signatures of the shock wave in the spiral ARM S4 of the andromeda galaxy The signatures of the shock wave in the spiral ARM S4 of the andromeda galaxy

Jun 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001a%26at...20..115e&link_type=abstract

Astronomical and Astrophysical Transactions, vol. 20, Issue 1, pp.115-118

Astronomy and Astrophysics

Astronomy

5

Galaxies: Individual (M31), Galaxies: Spiral, Galaxies

Scientific paper

Straight segments are found along the SW segment of the spiral arm S4 of M31. According Chernin's theory, this is explained by the spiral shock wave along the segment of the arm. This is compatible with other evidence for the shock wave along this segment, which includes the high value of the orthogonal component of the velocity difference between the gas of the galaxy and the spiral pattern, and the concentration of OB stars along the inner edge of the spiral arm.

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