Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...414..454c&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 414, no. 2, p. 454-462.
Astronomy and Astrophysics
Astrophysics
55
Dark Matter, Elliptical Galaxies, Galactic Halos, Planetary Nebulae, Radial Velocity, Absorption Spectra, Astronomical Photometry, Astronomical Spectroscopy, Mass Distribution, Mass To Light Ratios
Scientific paper
We present the results of a radial velocity survey of planetary nebulae (PNs) in the normal elliptical galaxy NGC 3379 performed with the Kitt Peak 4 m telescope and the NESSIE multifiber spectrograph. In two half-nights, we measured 29 PNs with projected galactocentric distances between 0.4 and 3.8 effective radii with an observational uncertainty of about 7 km/s. These data extend three times farther into the halo than any previous absorption-line velocity study. The velocity dispersion and photometric profile of the galaxy agrees extremely well with that expected from a constant mass-to-light ratio, isotropic orbit Jaffe model with M/L(B) about 7; the best-fitting anisotropic models from a quadratic programming algorithm also give M/L(B) about 7. The data are consistent with models that contain no dark matter within 3.5 effective radii of the galaxy's nucleus.
Ciardullo Robin
Dejonghe Herwig B.
Jacoby George H.
No associations
LandOfFree
The radial velocities of planetary nebulae in NGC 3379 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 The radial velocities of planetary nebulae in NGC 3379, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The radial velocities of planetary nebulae in NGC 3379 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1560256