A dynamical study of the Draco dwarf spheroidal galaxy

Details A dynamical study of the Draco dwarf spheroidal galaxy A dynamical study of the Draco dwarf spheroidal galaxy

Sep 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996mnras.282..305h&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 282, Issue 2, pp. 305-312.

Astronomy and Astrophysics

Astronomy

20

Galaxies: Individual: Draco, Galaxies: Kinematics And Dynamics, Local Group, Dark Matter

Scientific paper

We have observed 19 giant stars in the Draco dwarf spheroidal (dSph) galaxy and obtained good quality spectra for 17 of these. The velocity dispersion of the sample, calculated by the maximum-likelihood method, is 10.5+/-^2.2_1.7 km s^-1. The mean velocity is -293.8+/-^2.6_2.7 km s^-1. The data were taken at a single epoch, so there is no direct information about possible binary star contamination. Assuming dynamical equilibrium, isotropy in the velocity dispersion and a negligible contribution from binary stars, the core mass-to-light ratio is 166+/-^289_107 M_/L_ and the total mass-to-light ratio is 145+/-^116_71 M_/L_, consistent with the presence of large quantities of dark matter.

Affiliated with

Also associated with

No associations

Rating

A dynamical study of the Draco dwarf spheroidal galaxy does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with A dynamical study of the Draco dwarf spheroidal galaxy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A dynamical study of the Draco dwarf spheroidal galaxy will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-994756