2006A&A...452..451Z


C.D.S. - SIMBAD4 rel 1.7 - 2020.08.04CEST22:04:12

2006A&A...452..451Z - Astronomy and Astrophysics, volume 452, 451-457 (2006/6-3)

A new method to determine the thickness of non-edge-on disk galaxies.

ZHAO Y., PENG Q. and HU T.

Abstract (from CDS):

We present a new method to determine the thickness of non-edge-on disk galaxies. This method allows us to investigate the mass-to-light ratio of the disk.Our method is based on the comparison of observations and theory of the distribution of the vertical velocity dispersion, which is obtained from the solution of three dimensional Poisson equations and the galactic dynamical equation.As examples, the thickness and mass-to-light ratio of two disk galaxies, NGC 1566 and NGC 5247, which have been extensively studied by spectroscopy, have been calculated. The calculated results are consistent with observations and support the use of this method. However, due to the small sample size available, the results should be confirmed on other samples of galaxies.

Abstract Copyright:

Journal keyword(s): Galaxy: disk - Galaxy: kinematics and dynamics - Galaxy: structure - galaxies: individual: NGC 1566 - galaxies: individual: NGC 5247

Simbad objects: 10

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Number of rows : 10

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NGC 7814 GiG 00 03 14.947 +16 08 42.82   12.0       ~ 260 0
2 NGC 891 H2G 02 22 32.907 +42 20 53.95 11.08 10.81 9.93 7.86   ~ 1526 2
3 NGC 1566 Sy1 04 20 00.4020009055 -54 56 16.578104141 10.29 10.19 9.73 9.21 10.1 ~ 722 2
4 NGC 4013 GiG 11 58 31.417 +43 56 49.28   12.4       ~ 366 1
5 NGC 4217 GiG 12 15 50.900 +47 05 30.44   12.4       ~ 250 2
6 NGC 4244 GiG 12 17 29.659 +37 48 25.60   10.71   9.99   ~ 513 1
7 NGC 4565 LIN 12 36 20.804 +25 59 14.61   13.61 12.43     ~ 873 0
8 NGC 5023 EmG 13 12 11.799 +44 02 16.88   13.2       ~ 218 0
9 NGC 5247 GiG 13 38 03.0179394007 -17 53 02.635368748   10.77   9.96 10.5 ~ 203 0
10 NGC 5906 GiG 15 15 53.687 +56 19 43.86   11.4       ~ 680 1

    Equat.    Gal    SGal    Ecl

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2020.08.04-22:04:12

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