A Catalog of Digital Images of 113 Nearby Galaxies

Abstract

We present a digital catalog of images of 113 galaxies in this paper. These galaxies are all nearby, bright, large and well resolved. All images were recorded with charge coupled devices (CCDs) at the Palomar Observatory with the 1.5 meter telescope and at the Lowell Observatory with the 1.1 meter telescope. At Palomar we used the Thuan--Gunn g, r and i photometric bands to take 3 images each of 31 spiral galaxies; at Lowell we used the B_J and R bands (2 images per galaxy) of the photometric system by Gullixson et al. (1995) to observe 82 spirals and ellipticals. The galaxies were selected to span the Hubble classification classes. All data are photometrically calibrated with foreground stars removed. Important data on these galaxies published in the "Third Reference Catalog of Bright Galaxies" (RC3) are recorded in the FITS file headers. All files are available through anonymous FTP from ftp://astro.princeton.edu/, through WWW at http://astro.princeton.edu/~frei/galaxy_catalog.html, and Princeton University Press will soon publish the data on CD-ROM.Comment: uuencoded compressed tar archive of postscript files (paper + 2 tables + 7 figures) Accepted for publication in the Astronomical Journa

The DEEP Groth Strip Survey. X. Number Density and Luminosity Function of Field E/S0 Galaxies atz< 1

“…These residual images contain valuable information on galaxy morphology (Naim, Ratnatunga, & Griffiths 1997;Schade et al 1995). Figure 1 presents representative images of E, Sbc, and Im galaxies taken from the catalog of nearby galaxies of Frei et al (1996). Corresponding residual images and one-dimensional surface brightness profiles along the major axis are also shown.…”

“…The general trend is such that early-type galaxies have small R and large B=T, while late-type galaxies have large R and small B=T. Figure 2 plots R versus B=T for the subset of 80 galaxies from Frei et al (1996) that have enough background area necessary to determine a proper sky background subtraction. The Frei et al sample contains a wide variety of Hubble types and is thus well suited to studying the relation between our quantitative morphological selection criteria and visual classifications.…”

“…Note that roughly one-third of the Frei et al (1996) galaxies with T 0 are missed with these selection criteria. The objects omitted are mostly of borderline type, with À2 < T 0 (S0, S0/S0a).…”

“…In order to see how important pixel smoothing and S/N are, we block-average images of the same 80 Frei et al (1996) galaxies to simulate galaxy images with different half-light radii of roughly 5, 3, 2, 1.5, and 1 pixel. Note that the apparent sizes of distant galaxies in the GSS sample average r hl; med $ 5 pixels at the magnitude limit of I ' 22, and nearly all are larger than 3 pixels, so these tests are conservative (see Fig.…”

A lopsided chemically distinct nucleus in NGC 5055

“…The results of these observations are reported in detail by Boker et al (1999); we use them to estimate morphological parameters of isophotes. To extend our photometric analysis to the outer parts of the global galactic disk, we also took recourse to ground-based photometry; we used the public data of Frei et al (1996), obtained at the Palomar 1.5 m telescope through Thuan & Gunn's gri-filters: though of medium resolution (seeing of 2. 1−2.…”