Astronomy and Astrophysics – Astrophysics
Scientific paper
1998-02-19
Astron.J. 115 (1998) 2264-2272
Astronomy and Astrophysics
Astrophysics
23 pages, 5 figures
Scientific paper
10.1086/300379
Magnitude-limited samples of spiral galaxies drawn from the Ursa Major and Pisces clusters are used to determine their extinction properties as a function of inclination. Imaging photometry is available for 87 spirals in B,R,I and K' bands. Extinction causes systematic scatter in color-magnitude plots. A strong luminosity dependence is found. Relative edge-on to face-on extinction of up to 1.7 mag is found at B for the most luminous galaxies but is unmeasurably small for faint galaxies. At R the differential absorption with inclination reaches 1.3 mag, at I it reaches 1.0 mag, and at K' the differential absorption can in the extreme be as great as 0.3 mag. The luminosity dependence of reddening can be translated into a dependence on rotation rate which is a distance-independent observable. Hence, corrections can be made that are useful for distance measurements. The strong dependence of the corrections on luminosity act to steepen luminosity-linewidth correlations. The effect is greatest toward the blue, with the consequence that luminosity-linewidth slope dependencies are now only weakly a function of color.
Huang Sheng-Jun
Pierce Michael J.
Saunders Will
Tully Brent R.
Verheijen Marc A. W.
No associations
LandOfFree
Global Extinction in Spiral Galaxies 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 Global Extinction in Spiral Galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Global Extinction in Spiral Galaxies will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-407238