Radial distribution of stars, gas and dust in SINGS galaxies. I. Surface photometry and morphology

Details Radial distribution of stars, gas and dust in SINGS galaxies. I. Surface photometry and morphology Radial distribution of stars, gas and dust in SINGS galaxies. I. Surface photometry and morphology

2009-09-14

arxiv.org/abs/0909.2648v1

Munoz-Mateos et al. 2009, ApJ, 703, 1569

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

66 pages in preprint format, 14 figures, published in ApJ. The definitive publisher authenticated version is available online

Scientific paper

10.1088/0004-637X/703/2/1569

We present ultraviolet through far-infrared surface brightness profiles for the 75 galaxies in the Spitzer Infrared Nearby Galaxies Survey (SINGS). The imagery used to measure the profiles includes GALEX UV data, optical images from KPNO, CTIO and SDSS, near-IR data from 2MASS, and mid- and far-infrared images from Spitzer. Along with the radial profiles, we also provide multi-wavelength asymptotic magnitudes and several non-parametric indicators of galaxy morphology: the concentration index (C_42), the asymmetry (A), the Gini coefficient (G) and the normalized second-order moment of the brightest 20% of the galaxy's flux (M_20). Our radial profiles show a wide range of morphologies and multiple components (bulges, exponential disks, inner and outer disk truncations, etc.) that vary not only from galaxy to galaxy but also with wavelength for a given object. In the optical and near-IR, the SINGS galaxies occupy the same regions in the C_42-A-G-M_20 parameter space as other normal galaxies in previous studies. However, they appear much less centrally concentrated, more asymmetric and with larger values of G when viewed in the UV (due to star-forming clumps scattered across the disk) and in the mid-IR (due to the emission of Polycyclic Aromatic Hydrocarbons at 8.0 microns and very hot dust at 24 microns).

Affiliated with

Also associated with

No associations

Rating

Radial distribution of stars, gas and dust in SINGS galaxies. I. Surface photometry and morphology 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 Radial distribution of stars, gas and dust in SINGS galaxies. I. Surface photometry and morphology, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radial distribution of stars, gas and dust in SINGS galaxies. I. Surface photometry and morphology will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-554759