Global Structure and Kinematics of the Spiral Galaxy NGC 2841

Details Global Structure and Kinematics of the Spiral Galaxy NGC 2841 Global Structure and Kinematics of the Spiral Galaxy NGC 2841

1998-12-21

arxiv.org/abs/astro-ph/9812390v1

Astronomy and Astrophysics

Astrophysics

20 pages, Latex aasms4.sty, 9 Postscript figures, accepted to AJ

Scientific paper

10.1086/300798

Investigation of gaseous and stellar kinematics and of broad-band VRI and narrow-band H-alpha and [NII]6583 images is performed for the central part (R < 4 kpc) of the regular spiral galaxy NGC 2841. We have found emission-line splitting at R < 20" and three-component LOSVD for the stars in the radius range 6" - 100". Morphological analysis reveals strong narrow shock fronts close to the major axis in the radius range of 30" - 50", a turn of the isophote major axis by 5 degrees and strongly negative Fourier coefficient a4 (boxy isophotes) in the radius range of 15" - 33". In principle, all these features may be explained in the frame of a triaxial bulge hypothesis.

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