Infrared and CCD photometric study of spiral galaxies

Thesis/Dissertation · Wed Jan 01 04:00:00 EST 1986

OSTI ID:6926062

Manousoyannaki, I

Infrared J (1.2 ..mu..m), H (1.6 ..mu..m), and K (2.2 ..mu..m) photometry is presented for a subsample of galaxies with morphological types of Sc and Sb of the sample types Sc and Sb of the sample by Rubin et al. and one edge-on spiral galaxy. After an overview of the science of infrared photometry, accurate photometric magnitudes are derived via curves of growth that have been computed using a compiled catalogue of galaxies observed in the infrared. The catalogue is presented in Appendix I. The photometric data are used to derive mass to light ratio distribution and the colors for each galaxy. Several correlations of photometric and dynamical quantities are examined and discussed as integral properties of the two morphological types. The main result of this analysis is that the mass to H-light ratio is independent of radius and of H-luminosity and is a good measure of the stellar component of the galaxy. Emphasis is placed on the Tully-Fisher, absolute magnitude vs log (rotational velocity), relation and its application to derive distances of galaxies. The data are used to derive surface brightness distribution profiles and decompose the profiles to spheroidal and disk components. The radial distribution of color in these galaxies is also discussed.

• Research Organization: Oklahoma Univ., Norman (USA)
• OSTI ID: 6926062
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BRIGHTNESS
COLOR
CONFIGURATION
ELECTROMAGNETIC RADIATION
GALAXIES
INFRARED RADIATION
LUMINOSITY
MASS
OPTICAL PROPERTIES
ORGANOLEPTIC PROPERTIES
PHOTOMETRY
PHYSICAL PROPERTIES
RADIATIONS
SPIRAL CONFIGURATION
VISIBLE RADIATION