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The Imperial IRAS-FSC Redshift Catalogue
We present a new catalogue, the Imperial IRAS-FSC Redshift Catalogue(IIFSCz), of 60303 galaxies selected at 60?m from the IRAS FaintSource Catalogue (FSC). The IIFSCz consists of accurate position,optical, near-infrared and/or radio identifications, spectroscopicredshift (if available) or photometric redshift (if possible), predictedfar-infrared (FIR) and submillimetre (submm) fluxes ranging from 12 to1380?m based upon the best-fitting infrared template. About 55 percent of the galaxies in the IIFSCz have spectroscopic redshifts, and afurther 20 per cent have photometric redshifts obtained through eitherthe training set or the template-fitting method. For S(60) > 0.36 Jy,the 90 per cent completeness limit of the FSC, 90 per cent of thesources have either spectroscopic or photometric redshifts. Scientificapplications of the IIFSCz include validation of current and forthcominginfrared and submm/mm surveys such as AKARI, Planck and Herschel,follow-up studies of rare source populations, large-scale structure andgalaxy bias, local multiwavelength luminosity functions and sourcecounts. The catalogue is publicly available athttp://astro.imperial.ac.uk/~mrr/fss/.
| The Arecibo Legacy Fast Alfa Survey. V. The H I Source Catalog of the Anti-Virgo Region at δ = +27°
We present a second catalog of H I sources detected in the AreciboLegacy Fast ALFA Survey. We report 488 detections over 135deg2, within the region of the sky having 22 h < α< 03 h and +26° < δ < +28°. We present here thedetections that have either (a) S/N>6.5, where the reliability of thecatalog is better than 95% or (b) 5.0 < S/N < 6.5 and a previouslymeasured redshift that corroborates our detection. Of the 488 objectspresented here, 49 are high-velocity clouds or clumps thereof withnegative heliocentric recession velocities. These clouds are mostly verycompact and isolated, while some of them are associated with largefeatures such as Wright's Cloud or the northern extension of theMagellanic Stream. The remaining 439 candidate detections are identifiedas extragalactic objects and have all been matched with opticalcounterparts. Five of the six galaxies detected with M☉ are satellites of either the NGC672/IC1727 nearbygalaxy pair or their neighboring dwarf irregular galaxy NGC784. The dataof this catalog release include a slice through the Pisces-Perseusforeground void, a large nearby underdensity of galaxies. We report nodetections within the void, where our catalog is complete for systemswith masses of 108 M ☉. Gas-rich,optically-dark galaxies do not seem to constitute an important voidpopulation, and therefore do not suffice for producing a viable solutionto the void phenomenon.
| A Digital Archive of H I 21 Centimeter Line Spectra of Optically Targeted Galaxies
We present a homogeneous compilation of H I spectral parametersextracted from global 21 cm line spectra for some 9000 galaxies in thelocal universe (heliocentric velocity-200
| The UZC-SSRS2 Group Catalog
We apply a friends-of-friends algorithm to the combined Updated ZwickyCatalog and Southern Sky Redshift Survey to construct a catalog of 1168groups of galaxies; 411 of these groups have five or more members withinthe redshift survey. The group catalog covers 4.69 sr, and all groupsexceed the number density contrast threshold, δρ/ρ=80. Wedemonstrate that the groups catalog is homogeneous across the twounderlying redshift surveys; the catalog of groups and their membersthus provides a basis for other statistical studies of the large-scaledistribution of groups and their physical properties. The medianphysical properties of the groups are similar to those for groupsderived from independent surveys, including the ESO Key Programme andthe Las Campanas Redshift Survey. We include tables of groups and theirmembers.
| The Radio Galaxy Populations of Nearby Northern Abell Clusters
We report on the use of the NRAO VLA Sky Survey (NVSS) to identify radiogalaxies in 18 nearby Abell clusters. The listings extend from the coresof the clusters out to radii of 3 h-175 Mpc, whichcorresponds to 1.5 Abell radii and approximately 4 orders of magnitudein galaxy density. To create a truly useful catalog, we have collectedoptical spectra for nearly all of the galaxies lacking public velocitymeasurements. Consequently, we are able to discriminate between thoseradio galaxies seen in projection on the cluster and those that are inactuality cluster members. The resulting catalog consists of 329 clusterradio galaxies plus 138 galaxies deemed foreground or backgroundobjects, and new velocity measurements are reported for 273 of theseradio galaxies. The motivation for the catalog is the study of galaxyevolution in the cluster environment. The radio luminosity function is apowerful tool in the identification of active galaxies, as it isdominated by star-forming galaxies at intermediate luminosities andactive galactic nuclei (AGNs) at higher luminosities. The flux limit ofthe NVSS allows us to identify AGNs and star-forming galaxies down tostar formation rates less than 1 Msolar yr-1. Thissensitivity, coupled with the all-sky nature of the NVSS, allows us toproduce a catalog of considerable depth and breadth. In addition tothese data, we report detected infrared fluxes and upper limits obtainedfrom IRAS data. It is hoped that this database will prove useful in anumber of potential studies of the effect of environment on galaxyevolution. Based in part on observations obtained with the Apache PointObservatory 3.5 m telescope, which is owned and operated by theAstrophysical Research Consortium (ARC).
| The Arizona-New Mexico Spectroscopic Survey of Galaxies. III. On Galaxy Populations
We examine the population statistics for two samples of galaxies in thedirection of the Perseus supercluster. One sample, with N=258 galaxieshaving MB<=-19.52+5log(h) and vh<=8000 kms-1, is complete for those galaxies within the boundaries ofour survey region that have apparent magnitudes mp<=15.0in the Zwicky catalog. A more restrictive sample with N=177 galaxieshaving MB<=-20.00+5log(h) (with the same redshift range)is complete in both luminosity and volume. We derive the statistics forthe relative incidence of galaxies in the following spectroscopicclasses: (1) absorption line only, (2) collisionally-excited emissionlines only, (3) nuclear H II region, (4) starburst, (5) LINER, and (6)Seyfert 1.8-2.
| The Arizona-New Mexico Spectroscopic Survey of Galaxies. I. Data for the Western End of the Perseus Supercluster
We present new optical spectroscopic data for 347 galaxies in the regionof the Perseus supercluster. The new data were obtained using theSteward Observatory 2.3 m telescope and cover the whole optical window.Included are redshifts (for 345 objects), absorption-line equivalentwidths, a continuum index measuring the 4000 Å break, andemission-line flux ratios. After 11 objects are rejected for being toofaint and redshifts for 26 objects are added from the literature, wearrive at a complete sample of 361 galaxies. The distribution ofredshifts for the whole sample is examined, and we show the relationshipof the continuum index to morphology.
| The Updated Zwicky Catalog (UZC)
The Zwicky Catalog of galaxies (ZC), with m_Zw<=15.5, has been thebasis for the Center for Astrophysics (CfA) redshift surveys. To date,analyses of the ZC and redshift surveys based on it have relied onheterogeneous sets of galaxy coordinates and redshifts. Here we correctsome of the inadequacies of previous catalogs by providing (1)coordinates with <~2" errors for all of the 19,369 catalog galaxies,(2) homogeneously estimated redshifts for the majority (98%) of the datataken at the CfA (14,632 spectra), and (3) an estimate of the remaining``blunder'' rate for both the CfA redshifts and for those compiled fromthe literature. For the reanalyzed CfA data we include a calibrated,uniformly determined error and an indication of the presence of emissionlines in each spectrum. We provide redshifts for 7257 galaxies in theCfA2 redshift survey not previously published; for another 5625 CfAredshifts we list the remeasured or uniformly rereduced value. Among ournew measurements, 1807 are members of UZC ``multiplets'' associated withthe original Zwicky catalog position in the coordinate range where thecatalog is 98% complete. These multiplets provide new candidates forexamination of tidal interactions among galaxies. All of the newredshifts correspond to UZC galaxies with properties recorded in the CfAredshift compilation known as ZCAT. About 1000 of our new measurementswere motivated either by inadequate signal-to-noise in the originalspectrum or by an ambiguous identification of the galaxy associated witha ZCAT redshift. The redshift catalog we include here is ~96% completeto m_Zw<=15.5 and ~98% complete (12,925 galaxies out of a total of13,150) for the right ascension ranges 20^h>=alpha_1950<=4^h and8^h>=alpha_1950<=17^h and declination range-2.5d<=delta_1950<=50^deg. This more complete region includes allof the CfA2 survey as analyzed to date. The Great Wall structurepersists throughout the northern survey region. Dedicated to the memoryof Jim Peters, whose friendship, skill, and dedication were essential tothis work.
| The CFA Redshift Survey: Data for the South Galactic CAP
We present redshifts for a sample of 4391 galaxies with magnitudem_B(0)<=15.5 covering 20^h<=alpha<=4^h in right ascension and-2.5d<=delta<=90^deg in declination. This sample is complete forall galaxies in the merge of the Zwicky et al. and Nilson catalogs inthe south Galactic cap. Redshifts for 2964 of these were measured aspart of the second CfA Redshift Survey. The data reveal large voids inthe foreground and background of the Perseus-Pisces Supercluster. Thelargest of these voids lies at a mean velocity ~8000 km s^-1, hasdiameter ~5000 km s^-1, and is enclosed by a complex of densestructures. The large structure known as the Perseus-Pisces Superclusterforms the near side of this complex. On the far side of this large void,at a mean velocity ~12,000 km s^-1, there is another coherent densewall. The structures in this survey support the view that galaxiesgenerally lie on surfaces surrounding or nearly surrounding low-densityregions or voids.
| The Host Galaxy of the Broad Absorption Line QSO PG 1700+518 and Its Ring Galaxy Companion: NICMOS 1.6 Micron Imaging
The 1.6 μm Near Infrared Camera and Multiobject Spectrometer image ofthe broad absorption line QSO PG 1700+518 clearly resolves the QSO hostgalaxy and a ringlike companion. The companion is most likely a ringgalaxy produced in a collision with the QSO galaxy ~5x10^7 yr ago. Themorphology of the PG 1700+518 system is very similar to IRAS 04505-2958(Boyce et al. 1996). Both objects were identified in a sample of eightQSOs selected by ``warm'' far-IR colors and extreme IR luminosities (Lowet al. 1988). All eight QSOs show signs of strong interaction, and thepresence of two head-on colliding systems in this sample may suggestthat small impact parameters favor the energizing of IR-luminous QSOs.
| Dynamics of cD Clusters of Galaxies. III. Redshift Data for 11 Abell Clusters
We present the final observational data for a spectroscopic study of asample of cD galaxy clusters. The goal of this program has been to studythe dynamics of the clusters, with emphasis on determining the natureand frequency of peculiar-velocity cD galaxies. In this paper we presentredshifts for 762 galaxies in the fields of the rich Abell clustersA779, A1691, A1749, A1767, A1837, A1927, A2067, A2079, A2089, A2199, andA2666. We also present preliminary dynamical properties for theseclusters using our measured redshifts.
| Multiwavelength Observations of Collisional Ring Galaxies.I.Broad-Band Images, Global Properties, and Radial Colors of the Sample Galaxies
This is one of a series of papers discussing the optical, infrared andradio continuum properties of a sample of collisional ring galaxies. Thepresent paper concentrates on the global broad-band optical (B, V and R)and near-IR (J, H and K) images of the galaxies and describe theirglobal properties. An analysis of the colors of the galaxies over avariety of wavelength baselines is described. In the B and V bands, thebluest colors are found in the outer bright ring. The B-V colors of thesample of galaxies are blue, the median value for the sample is B-V =0.60, and V-K= 2.33 mag. The IR morphology of the galaxies is, in mostcases, very similar to that of the B-band data, suggesting that theclumpy appearance of the star formation in the outer rings is real, andnot a result of patchy dust obscuration. Only in one ring (WN1, aSeyfert ring galaxy) was the IR morphology different from the optical,suggesting the presence of significant dust in the disk. In II Hz 4,faint spiral arms are seen within the ring. There is a suggestion thatthe larger rings have redder V-K colors, which may be due to anincreased incidence of nuclear bulges in larger ring galaxies. Radialprofiles of surface brightness and color are presented for fourgalaxies. In all cases, the colors becomes bluer as one proceedsradially outwards, but in two galaxies, the rings redden again outsidethe main ring, suggesting the existence of a red stellar population thatmay have pre-dated the collisions.
| The spatial distribution, kinematics, and dynamics of the galaxies in the region of Abell 2634 and 2666
A total of 663 galaxies with known redshifts in a 12 deg x 12 deg fieldcentered on A2634, including 211 new measurements, are used to study indetail the structure of the region. In it we find six main galaxyconcentrations: the nearby clusters A2634 and A2666, two groups in thevicinity of A2634, and two distant clusters at approximately 18,000(A2622) and approximately 37,000 km/s seen in projection near the coreof A2634. For A2634, the most richly sampled of those concentrations, weare able to apply strict cluster membership criteria. Two samples - onecontaining 200 galaxies within 2 deg from the cluster center and asecond, magnitude-limited, of 118 galaxies within the central halfdegree - are used to examine the structure, kinematics, dynamics, andmorphological segregation of the cluster. We show that early typegalaxies appear to be a relaxed system, while the spiral populationeschews the center of the cluster and exhibits both a multimodalvelocity distribution and a much larger velocity dispersion that theellipticals. We propose that the spiral galaxies of A2634 represent adynamically young cluster population. For the galaxy component of A2634,we find no evidence of significant substructure in the central regions.We also conclude that the adoption of lenient membership criteria thatignore the dynamical complexity of A2634 are unlikely to be responsiblefor the conflicting results reported on the motion of this cluster withrespect ot the CMB. The kinematical and dynamical analysis is extendedto A2634's close companion, A2666, and the two distant backgroundclusters.
| The far-infrared-radio relation in cluster spiral galaxies
We present a study of the far-infrared (FIR) and radio emission in asample of group and cluster spiral galaxies. Galaxies are separated intorich and poor cluster samples based the value of the galaxy-galaxycorrelation coeffiient (Andersen & Owen 1994) of their parentcluster. Galaxies in the rich clusters have lower-FIR-radio ratios thana radio selected sample of field galaxies, while galaxies in poorclusters do not. We find that the degree of radio enhancement withrespect to FIR emission is consistent with a model where the radioemitting interstellar medium (ISM) is compressed by the ram pressure asthe galaxy moves through the intracluster medium. We suggest thatgalaxy-galaxy tidal interactions are important in the poorer clusters,but in general of much less importance in richer clusters.
| Multiwavelength observations of ring galaxies. 2: Global star formation in ring galaxies
We present optical H-alpha emission-line images and K band near-infraredimages of a sample of collisionally formed ring galaxies. These are usedto determine the distribution of star formation and the distribution ofthe old stellar population, respectively, in the galaxies. Our resultsshow ring galaxies to have similar Hcx luminosities to starburstgalaxies, with star formation being contained almost exclusively in thering. In the larger ring galaxies we observe the ionized hydrogen to lieon the outer edge of the underlying, broader, K band ring. No conclusiveevidence is found in our sample for a true underlying stellar densitywave. Rather, the evidence suggests that either the density waves havepassed into the outer, mainly H I disk of the galaxies or that theprogenitor galaxies were mainly gas-rich low surface brightness objectsand that most of the optical/IR light we now observe has resulted fromrecent star formation in the expanding ring.
| HI observations of galaxies in nearby Zwicky clusters
The results of a long term project of H I observations of galaxieswithin the boundaries of nearby Zwicky clusters are presented. Thedetection rate is rather low (233 out of 618, i.e., 38 percent) ascompared to other surveys carried out recently. Most of the radialvelocities of the detected galaxies are new determinations. The largespread in radial velocities for many of these clusters is a strongindication for the presence of several foreground and/or backgroundgalaxies.
| KISO survey for ultraviolet-excess galaxies. XIV.
The 14th list and identification charts of the UV-excess galaxiesdetected on the multicolor plates taken with the Kiso Schmidt telescopefor 10 survey fields are presented. In the sky area of some 300 sq deg,about 470 objects are cataloged down to the photographic magnitude ofabout 17.5.
| KISO survey for ultraviolet-excess galaxies. XI
Charts of UV-excess galaxies detected on multicolor plates with the KisoSchmidt telescope are presented. A total of 10 survey field areconsidered. In a 300-sq-deg sky area, 460 objects are cataloged to aphotographic magnitude of about 18.
| A VLA 20 CM survey of poor groups of galaxies
The paper reports on VLA 20 cm observations of an extensive sample ofgalaxies in 139 poor groups. These groups, composed of galaxies down tothe limit of the Zwicky et al. (CGCG) catalog, were chosen using apercolation algorithm set at a high surface-density threshold.Approximately 50 percent of the groups have measured redshifts. Thesegroups were surveyed using a 'snapshot' mode of the VLA with aresolution of about 13 arcsec. Analysis of the resulting radio andoptical properties reveals that the presence of a nearby companiongalaxy has an important role in generating radio emission in a galaxy.CCD observations of two radio-loud, disturbed galaxies with companionsare presented and are used to discuss models of radio-source production.Nine tailed radio galaxies are found in the poor groups, which is muchmore than had been expected from previous work on rich clusters and fromtheoretical models. The paper discusses previous statistical biases andproposes a method for bending head-tail sources in poor groups. From theconfinement of extended radio features associated with tailed sources,the presence of a substantial intracluster medium that should radiatesignificantly at soft-X-ray energies is predicted.
| A 21 CM survey of the Pisces-Perseus supercluster. II - The declination zone +21.5 to +27.5 degrees
Neutral-hydrogen 21-cm line spectra and derived parameters are presentedfor a sample of spiral galaxies in the region bounded by an R.A. greaterthan 22 h and less then 0.04 h, and a declination greater than +21 deg30 min and less than +27 deg 30 min, covering the Zwicky fields 470 to488, as the second installment of a survey of the region of thePisces-Perseus supercluster. New H I line observations made with theArecibo 305 m telescope detected 275 galaxies of 318 studied. Atabulation of derived galaxian properties is given. The redshiftdistribution shows gross departures from that expected for a sample withsimilar magnitude characteristics but homogeneously located in space.These new data will be incorporated into the overall survey of thethree-dimensional structure in the Pisces-Perseus region.
| A catalog of radio, optical, and infrared observations of spiral galaxies in clusters
The results of a major observational program on the luminosities,colors, and gas contents of spiral galaxies in clusters of galaxies arepresented. The data have been used as part of a detailed investigationinto the nature of cluster spirals and for revisions of the distancescale using the infrared Tully-Fisher relation. The observationalstrategies, reduction procedures, and sources or error are brieflydiscussed. The data include 21-cm H I observations, UBVR multiaperturephotometry, and H-band photometry of several hunderd spiral galaxies in10 clusters.
| Radio and optical observations of 9 nearby Abell clusters - A262, A347, A569, A576, A779, A1213, A1228, A2162, A2666
A survey is made of 61 Abell clusters included in the HEAO-2 satelliteobserving program at 1.4 GHz. Data are presented on the nine clusters ofdistance class 1 and 2. With a view to establishing galaxy morphologiesand extending the sample of the galaxies with known velocities, platesand spectra are obtained with a 152-cm telescope. The bivariate radioluminosity function of the cluster galaxies is determined for the threemorphological types, E, SO, and S plus Irr, dividing these into threedifferent classes of absolute optical magnitude. The radio luminosityfunctions of E and SO galaxies in present clusters do not differ fromthose of E and SO galaxies in clusters having higher richness. Someevidence exists that spiral galaxies in clusters have a lowerprobability of being radio sources than field ones. Also included is abrief discussion of the sizes of cluster radio sources and thecorrelation between radio emission and the presence of emission linesfrom a galaxy.
| Possible ring galaxies near rich clusters
Forty ringlike galaxies have been found in or near the fields of richgalaxy clusters. These possible rings are not strongly concentrated inthe cores of the clusters; most appear to belong either to a fieldpopulation or to cluster halos. There is some support for the finding byTheys (1973) that apparent companions seem to reside near the minor axesof rings.
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