Issue |
A&A
Volume 415, Number 3, March I 2004
|
|
---|---|---|
Page(s) | 889 - 903 | |
Section | Extragalactic astronomy | |
DOI | https://doi.org/10.1051/0004-6361:20034076 | |
Published online | 13 February 2004 |
Axisymmetric dynamical models for SAURON and OASIS observations of NGC 3377
1
Institut de Physique Nucléaire de Lyon, 69222 Villeurbanne, France
2
Sterrewacht Leiden, Postbus 9513, 2300 RA Leiden, The Netherlands
3
European Southern Observatory, Karl-Schwarzschild Strasse 2, 85748 Garching bei München, Germany
4
Max-Planck Institut für Astronomie, Königstuhl 17, 69117 Heidelberg, Germany
5
CRAL-Observatoire, 9 Avenue Charles-André, 69230 Saint-Genis-Laval, France
Corresponding author: Y. Copin, y.copin@ipnl.in2p3.fr
Received:
15
July
2003
Accepted:
1
November
2003
We present a unique set of nested stellar kinematical maps of NGC 3377 obtained with the integral-field spectrographs OASIS and SAURON . We then construct general axisymmetric dynamical models for
this galaxy, based on the Schwarzschild numerical orbit superposition
technique applied to these complementary measurements. We show how
these two datasets constrain the mass of the central massive object
and the overall mass-to-light ratio of the galaxy by probing the
inner and outer regions respectively. The simultaneous use of both
datasets leads us to confirm the presence of a massive black hole
with a mass of (99.7%
confidence level), with a best-fit stellar mass-to-light ratio
(for an assumed edge-on inclination).
Key words: galaxies: kinematics and dynamics / galaxies: individual: NGC 3377
© ESO, 2004
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