Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21934621s&link_type=abstract
American Astronomical Society, AAS Meeting #219, #346.21
Astronomy and Astrophysics
Astronomy
Scientific paper
We combine spectroscopic observations from the APO 3.5-meter telescope with SDSS spectra to conduct a survey of satellite galaxies around the nearby spiral NGC 4258. Of the 35 observed objects, 20 appear to be members of the system. Using the projected line-of-sight velocities of the satellite galaxies and a Jeans equation approximation, we constrain the total mass of NGC 4258 to within 50%. Further observations are expected to yield around 20 more satellite velocity measurements.
Loebman Sarah
Spencer Meghin
Yoachim Peter
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