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Near-IR and Optical Morphology of Spiral Galaxies

Paul B. Eskridge·Jay A. Frogel·Richard W. Pogge·Alice C. Quillen·Andreas A. Berlind·Roger L. Davies·D. L. DePoy·Karoline M. Gilbert·Mark L. Houdashelt·Leslie E. Kuchinski·Solange V. Ramirez·K. Sellgren·Amelia Stutz·Donald M. Terndrup·Glenn P. Tiede
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Abstract

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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Paul B. Eskridge, Jay A. Frogel, Richard W. Pogge, Alice C. Quillen, Andreas A. Berlind, Roger L. Davies, D. L. DePoy, Karoline M. Gilbert, Mark L. Houdashelt, Leslie E. Kuchinski, Solange V. Ramirez, K. Sellgren, Amelia Stutz, Donald M. Terndrup, Glenn P. Tiede. 2002-06-18. Near-IR and Optical Morphology of Spiral Galaxies. https://doi.org/10.1086/342340

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