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IAUC 8754 available at Central Bureau for Astronomical Telegrams.
|Infrared Observations of Galaxies in the Local Universe. II. 391 Calibrated Images with Photometric and Structural Measurements|
This paper presents empirical results from a deep imaging survey ofgalaxies in the local universe at the J and Ks wavelengths.Three hundred ninety-one images have been obtained and calibrated usingthe same camera and filter set with the Steward Observatory 1.6 m KuiperTelescope on Mount Bigelow and the 2.3 m Bok Telescope on Kitt Peak. Thelimiting magnitude is typically 22 mag arcsec-1 at J and 21mag arcsec-1 at Ks. The central surfacebrightness, apparent magnitudes, sizes, scale lengths, and inclinationsare tabulated from measurements made using these data. The purpose ofthis paper is to provide basic near-infrared data on a variety of galaxytypes.
|Nearby Optical Galaxies: Selection of the Sample and Identification of Groups|
In this paper we describe the Nearby Optical Galaxy (NOG) sample, whichis a complete, distance-limited (cz<=6000 km s-1) andmagnitude-limited (B<=14) sample of ~7000 optical galaxies. Thesample covers 2/3 (8.27 sr) of the sky (|b|>20deg) andappears to have a good completeness in redshift (97%). We select thesample on the basis of homogenized corrected total blue magnitudes inorder to minimize systematic effects in galaxy sampling. We identify thegroups in this sample by means of both the hierarchical and thepercolation ``friends-of-friends'' methods. The resulting catalogs ofloose groups appear to be similar and are among the largest catalogs ofgroups currently available. Most of the NOG galaxies (~60%) are found tobe members of galaxy pairs (~580 pairs for a total of ~15% of objects)or groups with at least three members (~500 groups for a total of ~45%of objects). About 40% of galaxies are left ungrouped (field galaxies).We illustrate the main features of the NOG galaxy distribution. Comparedto previous optical and IRAS galaxy samples, the NOG provides a densersampling of the galaxy distribution in the nearby universe. Given itslarge sky coverage, the identification of groups, and its high-densitysampling, the NOG is suited to the analysis of the galaxy density fieldof the nearby universe, especially on small scales.
|Arcsecond Positions of UGC Galaxies|
We present accurate B1950 and J2000 positions for all confirmed galaxiesin the Uppsala General Catalog (UGC). The positions were measuredvisually from Digitized Sky Survey images with rms uncertaintiesσ<=[(1.2")2+(θ/100)2]1/2,where θ is the major-axis diameter. We compared each galaxymeasured with the original UGC description to ensure high reliability.The full position list is available in the electronic version only.
|Infrared Observations of Galaxies in the Local Universe. I. The Survey and Some Representative Results|
This paper introduces a continuing survey of galaxies in the localuniverse. Consistent deep images are being acquired for a representativesample of 321 galaxies in the Uppsala General Catalogue down to 21.7 magarcsec-2 at Ks (2.16 mu m) and 22.4 mag arcsec-2 at J (1.25 mu m) usinga NICMOS camera with a 3.'8 x 3.'8 field of view attached to the 61 inch(1.5 m) telescope on Mount Bigelow. We provide some examples of theresults being obtained by employing 64 deep images of a subset of 44galaxies. Bulge-to-disk ratios are tabulated for 30 galaxies. Thebrightness of the central region of 44 galaxies declines approximately 5mag from Hubble type S0 to Sm. An exponential vertical scale height atKs is found to be 500 pc for the disk of UGC 5173. Arm amplitudes offour nearly face-on spiral galaxies are found to range between 11% and88% compared to the interarm region. There is some evidence that the armamplitude is larger at Ks than it is at J. Color gradients are measuredfor 15 galaxies with only one showing a significant nonzero result. Ameasurement of galactic symmetry applied to 64 deep images reveals anaverage asymmetry of 7.6% ( sigma = 4.6%) for these galaxies.
|Kinematics of the local universe. VII. New 21-cm line measurements of 2112 galaxies|
This paper presents 2112 new 21-cm neutral hydrogen line measurementscarried out with the meridian transit Nan\c cay radiotelescope. Amongthese data we give also 213 new radial velocities which complement thoselisted in three previous papers of this series. These new measurements,together with the HI data collected in LEDA, put to 6 700 the number ofgalaxies with 21-cm line width, radial velocity, and apparent diameterin the so-called KLUN sample. Figure 5 and Appendices A and B forcorresponding comments are available in electronic form at thehttp://www.edpsciences.com
|Colliding and Merging Galaxies. III. The Dynamically Young Merger Remnant NGC 3921|
This paper presents imaging, photometric, and spectroscopic observationsof NGC 3921 = Mrk 430 gathered over many years with five opticaltelescopes. This luminous galaxy (M_V_= -22.8 for H_0_ = 50) atcz_hel_=5926 +/- 15 km s^-1^ features a single nucleus, a main body withcomplex fine structure (ripples, loops, fan-shaped protrusions), and apair of ~100 kpc long, crossed tidal tails indicative of two former diskgalaxies of near-equal mass. These galaxies have essentially merged. Themain body of the remnant shows a typical post-starburst spectrumdominated in the blue by A 3-5 V stars. The inferred burst age is 0.5-1Gyr and the burst strength ~10% (by mass). Surrounding the nucleus isextremely centrally concentrated ionized gas that can be traced out to~12" (7 kpc), emits ~> 1.5 x 10^41^ ergs s^-1^ in Hα, and showssigns of both rotational and chaotic motions. The bright semistellarnucleus appears strikingly off-centered relative to the main body, whichitself features "sloshing" isophotes. That is, the centers of successiveisophotes shift position by ~>2 kpc, causing the nucleus to appeareccentric by up to 23% relative to a nearly half-light isophote. Theluminous matter has clearly not yet equilibrated, and this mergerremnant is dynamically young. Nevertheless, the mean light distributionof the main body is already well described by an r^1/4^ law. Thisdistribution plus the luminosity, UBV colors, color gradients, velocitydispersion, spectroscopic line strengths, and fine-structure index allagree with the notion that NGC 3921, which is a member of a small, tightgroup of four galaxies, is a 0.7+/-0.3 Gyr old protoelliptical (reckonedsince close passage that started the merger). Both it and its kin NGC7252 are nearby analogs of distant galaxies with "E+A"-type spectra inButcher-Oemler clusters. A search for star clusters and associations inNGC 3921 reveals 19 candidate OB associations, but only five candidateyoung globular clusters with M_V_ = -12 to -14. Thus, NGC 3921 appearsto have distinctly fewer and certainly less luminous young globularclusters than NGC 7252. This less extreme population of young globularsmay reflect a paucity of gas in one of the two merging component disksof this suspected S0-Sc or Sa-Sc merger (Hibbard & van Gorkom, AJ,in press). Such gas paucity may explain the weaker starburst and mayhave supplied fewer giant molecular clouds for globular clusterformation. Hence, the Hubble types and gas contents of componentgalaxies appear to play an important role in determining the clusterpopulations in merger remnants.
|An image database. II. Catalogue between δ=-30deg and δ=70deg.|
A preliminary list of 68.040 galaxies was built from extraction of35.841 digitized images of the Palomar Sky Survey (Paper I). For eachgalaxy, the basic parameters are obtained: coordinates, diameter, axisratio, total magnitude, position angle. On this preliminary list, weapply severe selection rules to get a catalog of 28.000 galaxies, wellidentified and well documented. For each parameter, a comparison is madewith standard measurements. The accuracy of the raw photometricparameters is quite good despite of the simplicity of the method.Without any local correction, the standard error on the total magnitudeis about 0.5 magnitude up to a total magnitude of B_T_=17. Significantsecondary effects are detected concerning the magnitudes: distance toplate center effect and air-mass effect.
|The dustiness, luminosity, and metallicity of galaxies|
B-band CCD images have been obtained of 230 galaxies in and near theVirgo and Ursa Major clusters. A coarse classification of these imagesshows that the 'dustiness' of late-type galaxies correlates stronglywith their luminosity. Luminous spirals are seen to be much dustier thanlate-type systems of lower luminosity. The reason for this correlationis probably that luminous galaxies are more metal-rich than fainterobjects. Systems with Fe/H less than about -1.0 are observed to beessentially dust-free.
|Classification of galaxies on CCD frames|
Morphological classifications of 231 galaxies in and near the Virgo andUrsa Major clusters are reported which show that luminosityclassification techniques (LCTs) can be used to determine theluminosities of spiral galaxies with an accuracy of about 0.7 mag on CCDframes. The observations in the direction of the Virgo Cluster confirmthe assignment of some galaxies to the background field, stronglyconfirming that the large dispersion in the Tully-Fisher relation forVirgo galaxies is at least partly due to contamination of the Virgo coresample by background galaxies. LCTs yield a distance of 15.3 + 2.6 or -2.2 Mpc for the spiral and irregular galaxies associated with the coreof the Virgo Cluster proper. The Ursa Major and Virgo cluster distancesare found to be the same. A class of galaxies with fuzzy, anemic outerstructure and active star formation in their cores is found to be commonin Virgo but rare in the Ursa Major Cluster.
|A Bowl Full of Galaxies|
|The Asiago Supernova Catalogue|
A Catalogue of Supernovae (SNe) is presented which tabulates the maindata relative to all extragalactic SNe discovered up to 1988 December31, and to their parent galaxies. In total 661 SNe are listed of which267 are classified. For an easier consultation, two lists are givenwhere the SNe are ordered chronologically and by Right Ascension,respectively. The overall distribution of classified supernovae over themorphological types of their parent galaxies is also presented in asummary table.
|A Checklist of Supernovae in the NGC and IC Galaxies Through 1985|
This Checklist of Supernovae in the NGC and IC Galaxies Through 1985 ispresented to assist those interested in undertaking a visual orphotographic search for extragalactic supernovae. Some galaxies appearto have had more than one or two supernovae, and these should bemonitored closely for any new outbursts.
|Supplement to the detailed bibliography on the surface photometry of galaxies|
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1985A&AS...60..517P&db_key=AST
|Digital surface photometry of galaxies toward a quantitative classification. III - A mean concentration index as a parameter representing the luminosity distribution|
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1984ApJ...280....7O&db_key=AST
|A revised supernova catalogue|
Essential data for 568 supernovae, discovered since 1885 up to 1983, andtheir parent galaxies are presented. This catalogue updates and revisesprevious listings, and some of its information is summarized in tabularand graphical form and briefly discussed. An appendix listing the mainreferences to observations of supernovae outside the optical range isprovided.
|The 1973 Palomar Supernova Search|
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1974PASP...86..516K&db_key=AST
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