Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986jass....3..103k&link_type=abstract
Journal of Astronomy and Space Science, vol. 3, no. 2, p. 103-116.
Astronomy and Astrophysics
Astronomy
Scientific paper
The mass distribution and other related quantities were calculated by fitting the observed rotation curve(Davoust and de Vaucouleur 1980) to Brandt and Belton's mass distribution model. One of n values for mass model is determined as 1.5(Vm = 95 kms-1) and two pairs of them are determined as 0.8(Vm = 95 kms-1) and 2.0 and 0.8(Vm = 55 kms-1) and 2.0 because f the hump in observed rotation curve. Total masses and integrated mass to luminosity ratios are 1.8 x 1010 Msolar, 1.5 x 1010 Msolar, 1.4 x 1010 Msolar, and 6.57, 5.33, 5.26 for three cases according to n values. Integrated mass to luminosity ratio in Holmberg radius is 3.44, 3.26, 3.00 in good agreement with the typical value of Sd type suggested by Faber and Gallagher(1979). Presented halo masses which are fifty percent of total masses and halo mass to luminosity ratios given as 75.83, 53.50, 58.75 are values less than Turner's(1976).
Chun Mun-Suk
Kim Chang-Ha
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