SIMBAD references

2002ApJS..143..113W - Astrophys. J., Suppl. Ser., 143, 113-158 (2002/November-0)

A Hubble space telescope survey of the mid-ultraviolet morphology of nearby galaxies.

WINDHORST R.A., TAYLOR V.A., JANSEN R.A., ODEWAHN S.C., CHIARENZA C.A.T., CONSELICE C.J., DE GRIJS R., DE JONG R.S., MacKENTY J.W., ESKRIDGE P.B., FROGEL J.A., GALLAGHER J.S.III, HIBBARD J.E., MATTHEWS L.D. and O'CONNELL R.W.

Abstract (from CDS):

We present a systematic imaging survey of 37 nearby galaxies observed with the Hubble Space Telescope (HST) Wide Field and Planetary Camera 2 (WFPC2) in the mid-UV F300W filter, centered at 2930 Å, as well as in the I-band (F814W) filter at 8230 Å. Eleven of these galaxies were also imaged in the F255W filter, centered at 2550 Å. Our sample is carefully selected to include galaxies of sufficiently small radius and high predicted mid-UV surface brightness to be detectable with WFPC2 in one orbit and covers a wide range of Hubble types and inclinations. The mid-UV (2000-3200 Å) spans the gap between ground-based UBVR(IJHK) images, which are available or were acquired for the current study, and far-UV images available from the Astro/UIT missions for 15 galaxies in our sample. The first qualitative results from our study are as follows: Our HST mid-UV survey of nearby galaxies shows that, when observed in the rest-frame mid-UV, early- to mid-type galaxies are more likely to be misclassified as later types than late-type galaxies are to be misclassified as earlier types. This is because the later type galaxies are dominated by the same young and hot stars in all filters from the mid-UV to the red and so have a smaller ``morphological K-correction'' than true earlier type galaxies. The morphological K-correction can thus explain part, but certainly not all, of the excess faint blue late-type galaxies seen in deep HST fields.

Abstract Copyright:

Journal keyword(s): Galaxies: Elliptical and Lenticular, cD - Galaxies: Interactions - Galaxies: Irregular - Galaxies: Peculiar - Galaxies: Spiral - Ultraviolet: Galaxies

Simbad objects: 61

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