Photometry of the Low-Luminosity Spiral Galaxy NGC4136

Astronomy and Astrophysics – Astronomy

Scientific paper

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Scientific paper

Multicolor BVRI surface photometry of the low-luminosity (M_V = -18 mag) spiral galaxy NGC4136 is presented. The photometric parameters of its components and the color distribution over the galactic disk are estimated. The color indices and the corresponding effective ages are determined for the brightest star-forming regions. The disk-to-dark halo mass ratio is derived from the measured rotation curve of the galaxy. The disk mass dominates within the optical boundaries of the galaxy, so its disk can be considered as a self-gravitating system.

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