Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976apj...205...63m&link_type=abstract
Astrophysical Journal, vol. 205, Apr. 1, 1976, pt. 1, p. 63-73.
Astronomy and Astrophysics
Astrophysics
21
Andromeda Galaxy, Galactic Nuclei, Stellar Motions, Stellar Spectra, Velocity Distribution, Fourier Transformation, Galactic Structure, Least Squares Method, Spectral Line Width
Scientific paper
Stigmatic spectra between 4160 and 4385 A of the central regions of M31 and M32 as well as the K0 III star 51 Ori are presented which were obtained using a SEC-vidicon integrating television tube and the coude spectrograph of the Hale telescope. Line-of-sight velocity dispersions of approximately 130 and 55 km/s are determined for the nuclei of M31 and M32, respectively, by directly comparing their spectra with Gaussian-broadened spectra of 51 Ori. The analytical techniques are outlined, and alternative methods for estimating velocity dispersions are evaluated, including least-squares fitting of intensities and division of Fourier transforms. It is noted that the broadened spectrum of 51 Ori fits the nucleus of M32 and the bulge of M31 much better than the nucleus of M31 in the region between 4180 and 4370 A.
Elmergreen Bruce G.
Morton Donald C.
No associations
LandOfFree
Velocity dispersions in galaxies. V - The nuclei of M31 and M32 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 Velocity dispersions in galaxies. V - The nuclei of M31 and M32, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Velocity dispersions in galaxies. V - The nuclei of M31 and M32 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1612055