Planetary Nebulae and Stellar Kinematics in Interacting Spiral Galaxy M82

Details Planetary Nebulae and Stellar Kinematics in Interacting Spiral Galaxy M82 Planetary Nebulae and Stellar Kinematics in Interacting Spiral Galaxy M82

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...20915602j&link_type=abstract

2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #156.02; Bulletin of the American Astronomical Society,

Astronomy and Astrophysics

Astronomy

Scientific paper

Using an on-band/off-band filter technique, we identify 114 planetary nebulae (PNs) in the edge-on spiral galaxy M82 using the FOCAS instrument at the 8.2m Subaru Telescope. Radial velocities were determined for 100 of these PNs using a method of slitless spectroscopy, from which we obtain a clear picture of the galaxy’s rotation. We find evidence for a Keplerian decline in M82’s rotation curve, in agreement with results derived by CO(2-1) and HI measurements (Sofue 1998). These results affirm the use of PN as effective, accurate kinematic probes of galaxies. This work was conducted by a Research Experience for Undergraduates (REU) position at the University of Hawaii's Institute for Astronomy and funded by the NSF.

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