Disk Mass-to-light ratio through stellar population synthesis: Dark matter content of NGC 5278
Abstract
We extended the study on the mass distribution of the spiral galaxy NGC 5278, obtaining the 2D mass distribution of the stellar disk of NGC 5278 using broad band photometric observations and stellar population synthesis models. We performed the rotation curve (RC) decomposition of NGC 5278, subtracting the extracted baryonic disk from the observed RC and fitting only the dark matter RC with four density profiles of dark matter (DM) halos: Hernquist (HH), Burkert (BH), Navarro, Frenk and White (NFW) and Einasto (EH). The main results of this work were that the HH DM halo better fitted the DM RC of NGC 5278 in the case of disk mass M_d=5.6× 10^{10} M_{odot} and less 30% of this value, and also that the cored (n < 4) EH DM halo better fitted the DM RC of NGC 5278 in the case of more 30% disk mass.
- Publication:
-
Revista Mexicana de Astronomia y Astrofisica Conference Series
- Pub Date:
- October 2014
- Bibcode:
- 2014RMxAC..44Q.185R