Absorption Line Gradients in the Bulge of sa Type Galaxy M104

Details Absorption Line Gradients in the Bulge of sa Type Galaxy M104 Absorption Line Gradients in the Bulge of sa Type Galaxy M104

Dec 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000jass...17..132s&link_type=abstract

Journal of Astronomy and Space Sciences, vol. 17, no. 2, p. 125-132

Astronomy and Astrophysics

Astronomy

Globulas Cluster, Photometry, Metallicity

Scientific paper

Long-slit spectra, covering the wavelength range 4050 Å - 5150 Å, have been used to investigate the radial behavior of absorption line features (G4300, Fe4383, Ca4455, Fe4531, Fe4668, and Hα ) along the major and minor axes of the bulge of M104. The heliocentric recession velocity of M104 has been derived as 1260 +/- 190 kms^-1 . The strength of a number of metal absorption lines is decreasing with increasing radius, and the minor axis shows much steeper radial line gradients than the major axis. Line index of Hα has an opposite trend to other metal lines, i.e., increasing outward. The results in this paper imply that the properties of absorption line index distribution in M104 bulge have in many aspects similar trends to those of elliptical galaxies.

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