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Groups of Galaxies in the Two Micron All Sky Redshift Survey
We present the results of applying a percolation algorithm to theinitial release of the Two Micron All Sky Survey Extended SourceCatalog, using subsequently measured redshifts for almost all of thegalaxies with K<11.25 mag. This group catalog is based on the firstnear-IR all-sky flux-limited survey that is complete to|b|=5deg. We explore the dependence of the clustering on thelength and velocity scales involved. The paper describes a groupcatalog, complete to a limiting redshift of 104 kms-1, created by maximizing the number of groups containingthree or more members. A second catalog is also presented, created byrequiring a minimum density contrast of δρ/ρ>=80 toidentify groups. We identify known nearby clusters in the catalogs andcontrast the groups identified in the two catalogs. We examine andcompare the properties of the determined groups and verify that theresults are consistent with the UZC-SSRS2 and northern CfA redshiftsurvey group catalogs. The all-sky nature of the catalog will allow thedevelopment of a flow-field model based on the density field inferredfrom the estimated cluster masses.
| The ISOPHOT 170 μm Serendipity Survey II. The catalog of optically identified galaxies%
The ISOPHOT Serendipity Sky Survey strip-scanning measurements covering≈15% of the far-infrared (FIR) sky at 170 μm were searched forcompact sources associated with optically identified galaxies. CompactSerendipity Survey sources with a high signal-to-noise ratio in at leasttwo ISOPHOT C200 detector pixels were selected that have a positionalassociation with a galaxy identification in the NED and/or Simbaddatabases and a galaxy counterpart visible on the Digitized Sky Surveyplates. A catalog with 170 μm fluxes for more than 1900 galaxies hasbeen established, 200 of which were measured several times. The faintest170 μm fluxes reach values just below 0.5 Jy, while the brightest,already somewhat extended galaxies have fluxes up to ≈600 Jy. For thevast majority of listed galaxies, the 170 μm fluxes were measured forthe first time. While most of the galaxies are spirals, about 70 of thesources are classified as ellipticals or lenticulars. This is the onlycurrently available large-scale galaxy catalog containing a sufficientnumber of sources with 170 μm fluxes to allow further statisticalstudies of various FIR properties.Based on observations with ISO, an ESA project with instruments fundedby ESA Member States (especially the PI countries: France, Germany, TheNetherlands and the UK) and with the participation of ISAS and NASA.Members of the Consortium on the ISOPHOT Serendipity Survey (CISS) areMPIA Heidelberg, ESA ISO SOC Villafranca, AIP Potsdam, IPAC Pasadena,Imperial College London.Full Table 4 and Table 6 are only available in electronic form at theCDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or viahttp://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/422/39
| Physical Coupling of Kazarian Galaxies with Surrounding Galaxies
Results from a statistical study of Kazarian galaxies and the objectssurrounding them are presented. It is shown that: (1) the sample ofKazarian galaxies up to 16m.0 is complete. (2) Roughly 35.7% of theKazarian galaxies are members of clusters, 14.0% of groups, and 13.6% ofbinary systems, while 36.7% are single galaxies. (3) Of the 580 Kazariangalaxies, roughly 61.2% are infrared, 8.8% radio, and 2.8% x-raysources. (4) The relative numbers of Kazarian galaxies for completesamples of I, R, and X in the different groups are systematically higherthan the corresponding numbers for samples of all Kazarian galaxies.
| The K-Band Galaxy Luminosity Function
We measured the K-band luminosity function using a complete sample of4192 morphologically typed 2MASS galaxies withμKs=20 mag arcsec-2 isophotalmagnitudes 7-0.5) galaxies havesimilarly shaped luminosity functions, αe=-0.92+/-0.10and αl=-0.87+/-0.09. The early-type galaxies arebrighter, MK*e=-23.53+/-0.06 mag compared toMK*l=-22.98+/-0.06 mag, but less numerous,n*e=(0.45+/-0.06)×10-2 h3Mpc-3 compared ton*l=(1.01+/-0.13)×10-2 h3Mpc-3 for H0=100 h km s-1Mpc-1, such that the late-type galaxies slightly dominate theK-band luminosity density,jlate/jearly=1.17+/-0.12. Including a factor of1.20+/-0.04 correction for the conversion of the isophotal surveymagnitudes to total magnitudes, the local K-band luminosity density isj=(7.14+/-0.75)×108 h LsolarMpc-3, which implies a stellar mass density relative tocritical of Ω*h=(1.9+/-0.2)×10-3 for aKennicutt initial mass function (IMF) andΩ*h=(3.4+/-0.4)×10-3 for a SalpeterIMF. Our morphological classifications are internally consistent, areconsistent with previous classifications, and lead to luminosityfunctions unaffected by the estimated uncertainties in theclassifications. These luminosity functions accurately predict theK-band number counts and redshift distributions for K<~18 mag, beyondwhich the results depend on galaxy evolution and merger histories. Thispublication makes use of data products from the Two Micron All SkySurvey (2MASS), which is a joint project of the University ofMassachusetts and the Infrared Processing and Analysis Center/CaliforniaInstitute of Technology, funded by the National Aeronautics and SpaceAdministration and the National Science Foundation.
| 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.
| Bright galaxies from WENSS. I. The minisurvey
A search for bright galaxies associated with radio sources from theWENSS minisurvey has been carried out. A galaxy counterpart was foundfor 402 of almost 10,000 radio sources. Of these a radio and opticallycomplete sample, with a flux density limit at 325 MHz of 30 mJy and alimiting red magnitude of 16, can be constructed, which contains 119galaxies. This paper is the first step of a more general study, in whichwe aim to derive a bright galaxy sample from the entire WENSS survey(which is now available in the public domain) and thus to constructpractically definitive local radio luminosity functions of ellipticaland spiral galaxies. We briefly describe the WENSS minisurvey, and thesteps that are needed for the optical identification of its radiosources. Due to the large numbers of sources involved (over 200,000)completely automated procedures are obviously needed and we discussthese in some detail. It is shown that with modern utilities projects asdescribed here have become quite feasible. Some results (e.g. apreliminary determination of the local radio luminosity function) arepresented. Table 1 is only available in electronic form at the CDS viaanonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or viahttp://cdsweb.u-strasbg.fr/Abstract.html
| The ISOPHOT far-infrared serendipity north ecliptic pole minisurvey
The ISOPHOT Serendipity Survey fills the otherwise unused slew timebetween ISO's fine pointings with measurements in an unexploredwavelength regime near 200 microns. In order to test point sourceextraction software, the completeness of the detected objects as well asthe astrophysical content we investigate a 100 sq degr field near theNorth ecliptic pole, dubbed ISOPHOT Serendipity Minisurvey field. Atotal of 21 IRAS point sources were detected on the Serendipity slewscrossing the field. 19 of these objects are galaxies, one is a planetarynebula and one is an empty field without a bright optical counterpart.The detection completeness is better than 90% for IRAS sources brighterthan 2 Jy at 100 microns and better than 80% for sources brighter than1.5 Jy. The source detection frequency is about 1 per 40degr slewlength, in agreement with previous estimations based on galaxy numbercounts. After the end of the ISO mission, about 4000 point sources areexpected to be found in the Serendipity slews. Based on observationswith ISO, an ESA project with instruments funded by ESA Member States(especially the PI countries: France, Germany, the Netherlands and theUnited Kingdom) and with the participation of ISAS and NASA. Members ofthe Consortium on the ISOPHOT Serendipity Survey (CISS) are MPIAHeidelberg, ESA ISO SOC Villafranca, AIP Potsdam, IPAC Pasadena,Imperial College London
| Spectrophotometric investigation of eight galaxies with a UV excess.
The results of a spectroscopic and morphological investigation ofgalaxies with a UV excess Nos. 27, 28, 93, 101, 109, 164, 204, and 217from the lists of [M. A. Kazarian, 15, 5, 193 (1979)] are given. Theequivalent widths, relative intensities, and half- widths of lines aredetermined. The masses of galaxies Nos. 28, 93, 101, 164, 204, and 217are also determined.
| Morphological classification of new galaxies with a UV excess
The results of a morphological classification of 580 galaxies with a UVexcess, included in the lists in [M. A. Kazarian, Astrofizika,15, 5(1979); ibid.,15, 193 (1979); M. A. Kazarian and É. S. Kazarian,ibid.,16, 17 (1980); ibid.,18, 512 (1982); ibid.,19, 213 (1983)], arepresented. For this we have developed a set of symbols, using the typesE, S, and Ir introduced by Hubble, as well as symbols introduced byother authors and us. This set enabled us to make the morphologicalclassification. Direct photographs obtained on the 2.6-m and 6-mtelescopes were used to classify 141 of the galaxies (over 24%), whilePalomar Atlas charts were used for the remaining 439 galaxies. Thesegalaxies were divided into two groups based on classificationconditions, and data on each group are given in Tables 1 and 2,respectively. The results for each group, given in Table 3, show thatwith the transition from early types, such as C and E, to later types,such as S and Ir, the relative number of galaxies going into one group(Table 1), in which the classification was based on direct photographs,increases in comparison with the number going into the other group(Table 2).
| IRAS Faint Source Catalogue, version 2.0.
Not Available
| Spectral observations of new galaxies with UV excess. II
Results of spectral observations of 41 galaxies with UV excess arepresented. The spectra were obtained with the 6-m telescope of theSpecial Astrophysicl Observatory. Emission lines were observed in thespectra of 36 galaxies. Four objects, 147, 214, 323, and 336 are of theSeyfert type (Sy 2), while one galaxy, 238, is a Seyfert candidate.
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