Near-IR and Optical Morphology of Spiral Galaxies

Details Near-IR and Optical Morphology of Spiral Galaxies Near-IR and Optical Morphology of Spiral Galaxies

2002-06-18

arxiv.org/abs/astro-ph/0206320v1

Astrophys.J.Suppl.143:73-112,2002

Astronomy and Astrophysics

Astrophysics

LaTeX with AASTeX style file, 56 pages with 4 multi-part figures. Accepted for publication in The Astrophysical Journal Supple

Scientific paper

10.1086/342340

We announce the initial release of data from the Ohio State University Bright Spiral Galaxy Survey, a BVRJHK imaging survey of a well-defined sample of 205 bright, nearby spiral galaxies. We present H-band morphological classification on the Hubble sequence for the OSU Survey sample. We compare the H-band classification to B-band classification from our own images and from standard galaxy catalogs. Our B-band classifications match well with those of the standard catalogs. On average, galaxies with optical classifications from Sa through Scd appear about one T-type earlier in the H-band than in the B-band, but with large scatter. This result does not support recent claims made in the literature that the optical and near-IR morphologies of spiral galaxies are uncorrelated. We present detailed descriptions of the H-band morphologies of our entire sample, as well as B- and H-band images for a set of 17 galaxies chosen as type examples, and BRH color-composite images of six galaxies chosen to demonstrate the range in morphological variation as a function of wavelength. Data from the survey are accessible at http://www.astronomy.ohio-state.edu/~survey/

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