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Kinematics of the local universe . XII. 21-cm line measurements of 586 galaxies with the new Nançay receiver
This paper presents 586 new 21-cm neutral hydrogen line measurementscarried out with the FORT receiver of the meridian transit Nançayradiotelescope in the period July 2000-March 2003. This observationalprogramme is part of a larger project aiming at collecting an exhaustiveand magnitude-complete HI extragalactic catalogue for Tully-Fisherapplications. It is associated with the building of the MIGALEspectroscopic archive and database.Tables 2, 3 and HI-profiles and corresponding comments are onlyavailable in electronic form at the CDS via anonymous ftp tocdsarc.u-strasbg.fr (130.79.128.5) or viahttp://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/430/373, or directly atour web site http://klun.obs-nancay.fr
| A Visual Search for Galaxies in a Milky Way Region around the North Supergalactic Pole
We performed a visual systematic search for galaxies on POSS II(B)plates in a Milky Way region between l~=32deg-68° andb~=-4deg to 19°. This region partly contains the LocalVoid, and the north supergalactic pole exists at the central part. Thesurveyed area was about 560 deg2, and a total of 11,310galaxies and galaxy candidates with sizes of 0.1′ or greater wereidentified. Among the detected objects, 152 have been given in galaxycatalogs and 159, including 49 known galaxies, are associated with IRASpoint sources. We made a catalog of the detected objects, in which theposition in (α, δ) and (l, b), the size, and the features ofthe image and multiplicity are given for each object. The surface numberdensities of the detected objects almost depend on the Galacticlatitude. In the surveyed region, there is no nearby cluster and thereis an outstanding concentration of galaxies at l=7deg-12°and 4000-5000 km s-1.
| 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.
| Catalogue of HI maps of galaxies. I.
A catalogue is presented of galaxies having large-scale observations inthe HI line. This catalogue collects from the literature the informationthat characterizes the observations in the 21-cm line and the way thatthese data were presented by means of maps, graphics and tables, forshowing the distribution and kinematics of the gas. It containsfurthermore a measure of the HI extension that is detected at the levelof the maximum sensitivity reached in the observations. This catalogueis intended as a guide for references on the HI maps published in theliterature from 1953 to 1995 and is the basis for the analysis of thedata presented in Paper II. The catalogue is only available inelectronic form at the CDS via anonymous ftp 130.79.128.5 orhttp://cdsweb.u-strasbg.fr/Abstract.html
| 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
| Search and Redshift Survey for IRAS Galaxies behind the Milky Way and Structure of the Local Void
This is the third and final paper of our systematic visual search forIRAS galaxies behind the Milky Way at |b| <= 15 deg. This paperpresents a catalog of 950 IRAS galaxies with 60 mu m flux densitieslarger than 0.6 Jy located between l = 0 deg and 150 deg, of which 293are newly identified by this search. We made a redshift survey for theidentified galaxies and obtained new redshift data of 171 galaxies. Wealso present newly measured redshifts of 27 IRAS galaxies between l =150 deg and 225 deg at |b| <= 15 deg. In this paper we studied thestructure of the Local void using IRAS galaxies and galaxies from theThird Reference Catalogue of Bright Galaxies in the region l = 30deg--120 deg and b = -50 deg to +30 deg. The center of the Local voidturned out to be located at l ~ 60 deg, b ~ -15 deg, and cz ~ 2500 kms-1, and the size is about 2500 km s-1 along the direction toward thecenter.
| Neutral hydrogen observations of galaxies in the Hercules supercluster. III. CGCG fields at the edge of the void.
The third installment of a HI redshift survey in the region of theHercules supercluster is presented. This part of the survey presents HIspectra of 84 galaxies selected from the UGC and CGCG which extends thepreviously begun survey of late-type spiral galaxies in that region.Measured HI parameters from the spectra are given. For about 20% of thesample, these parameters are compared to those measured previously byother workers.
| A search for gas-rich dwarf galaxies just outside the Local Supercluster
Results are presented of the sampling of the nearest void in thedistribution of galaxies, in a direction perpendicular to thefundamental plane of the Local Supercluster, in the neutral hydrogenspectral line for low-mass gas clouds or H I-rich dwarf galaxies. Nonewere found, to a smaller H I mass limit than has been previouslyreported for a low-density region in the large-scale distribution ofgalaxies. An upper limit of about 5 percent of closure density in theform of gas clouds with MH of greater than about 5,000,000solar masses is given. It is suggested that the ratio of gas-rich dwarfsto spirals is no higher in voids than in superclusters, and that dwarfirregular galaxies with MH below 10 exp 8 solar masses areless common than galaxies of greater mass. Two new members of apreviously detected group of galaxies at a redshift of about 2500 km/s,representing an 'island' in the void, were detected, along with fourgalaxies in the background.
| Northern dwarf and low surface brightness galaxies. II - The Green Bank neutral hydrogen survey
The paper reports neutral hydrogen observations of a large sample ofdwarf and other low surface brightness galaxies. A detailed discussionand error analysis of the observations are presented, and spectra aredisplayed for 329 galaxies detected for the first time, or detected withsubstantially better signal-to-noise ratios than achieved previously.The positions on the sky of 667 galaxies meeting the present selectioncriteria north of delta = 38 deg are shown. The distribution of theredshifts of galaxies detected at Green Bank is illustrated. The GreenBank detections tapered off strongly below the median H I flux of 3.7 Jykm/s detected at Arecibo: only 12 percent of the Green Bank sample wasdetected with smaller fluxes.
| A redshift survey of low-surface-brightness galaxies. I - The basic data
Initial results from a 21 cm redshift survey of 375 very low surfacebrightness galaxies contained in the Uppsala General Catalog of Galaxiesare presented. The selection criteria and detection statistics as afunction of the sample optical properties are fully discussed. Theredshift distribution for the sample exhibits a pronounced peak at 5000km/s, corresponding to the well-studied Perseus-Pisces supercluster. Theoverall detection rate was 65 percent, and the bulk of the detectionsare genuine low surface brightness spiral galaxies, may with linewidthsin excess of 300 km/s, as opposed to true dwarf galaxies. It is arguedthat most of the nondetections are unlikely to be gas-poor dwarfs, butinstead are galaxies with velocities beyond 10,000 km/s. Taken as awhole, the sample demonstrates that optical surface brightness is notnecessarily a reliable indicator of intrinsic luminosity or mass.
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