Astronomy and Astrophysics – Astrophysics
Scientific paper
2001-11-22
Astronomy and Astrophysics
Astrophysics
34 pages, 11 figures, will appear in March 2002 of AJ
Scientific paper
10.1086/338849
We present a deep, 42.79 hr image of the nearby, edge-on galaxy NGC 4565 in the Beijing-Arizona-Taipei-Connecticut (BATC) 6660A band using the large-format CCD system on the 0.6m Schmidt telescope at the Xinglong Station of the National Astronomical Observatories of China (NAOC). we obtain a final image that is calibrated to an accuracy of 0.02 mag in zero point, and for which we can measure galaxy surface brightness to an accuracy of 0.25 mag at a surface brightness at 27.5 mag arcsec^-2 at 6660A, corresponding to a distance of 22 kpc from the center of the disk. The integrated magnitude of NGC4565 in our filter is m6660=8.99 (R magnitude of 9.1) to a surface brightness of 28 mag arcsec-2. We analyze the faint outer parts of this galaxy using a two-dimensional model comprised of three components: an exponential thin disk, an exponential thick disk, and a power-law halo. A total of 12 parameters are included in our model. We determine the best values of our model parameters via 10,000 random initial values, 3,700 of which converge to final values. The thin disk and thick disk parameters we determine here are consistent with those of previous studies of this galaxy. However, our very deep image permits a better determination of the power law fit to the halo, constraining this power law to be between r^-3.2 and r^-4.0, with a best fit value of r^-3.88. We find the axis ratio of the halo to be 0.44 and its core radius to be 14.4 kpc (for an adopted distance of 14.5 Mpc).
Burstein Dave
Deng Zugan
Wu Haibin
No associations
LandOfFree
Intermediate-band Surface Photometry of the Edge-on Galaxy: NGC 4565 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 Intermediate-band Surface Photometry of the Edge-on Galaxy: NGC 4565, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Intermediate-band Surface Photometry of the Edge-on Galaxy: NGC 4565 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-9543