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A new H I catalog of Low Surface Brightness galaxies out to z = 0.1. Tripling the number of massive LSB galaxies known
Using both the Arecibo 305 m and the Nançay decimetric 100-mclass radio telescopes, we have observed the H I line of 116 Low SurfaceBrightness (LSB) galaxies from the Bothun et al. (1985) subset of LSBgalaxies in the Uppsala General Catalog. The observations had adetection rate of 70%, resulting in the new determination of H Iproperties for 81 galaxies. Surprisingly, roughly half of the detectedobjects (38) have MHI ≥1010Mȯ, placing them into the category of massive LSBgalaxies. As previously only 18 of these ``Malin 1 cousins'' wereknown, our results have more than tripled the number of thesefascinating and enigmatic systems known. Combining our results withprevious studies done on the Bothun et al. catalog results in awell-defined catalog of H I properties of 526 LSB galaxies ranging inredshift space from 0 ≤z ≤0.1. With this catalog in hand, wehave been able to explore the parameter space occupied by LSB galaxiesmore completely than has been previously possible. In agreement withprevious studies, our results show LSB galaxies with some of the mostextreme properties of disk galaxies, includingMHI/LB ratios often exceeding 10Mȯ/Lȯ,B.Tables 1-3 are 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/cgi-bin/qcat?J/A+A/428/823Appendix is only available in electronic form athttp://www.edpsciences.org
| Classifications of the Host Galaxies of Supernovae
Classifications on the DDO system are given for the host galaxies of 177supernovae (SNe) that have been discovered since 1997 during the courseof the Lick Observatory Supernova Search with the Katzman AutomaticImaging Telescope. Whereas SNe Ia occur in all galaxy types, it isfound, at a high level of statistical confidence, that SNe Ib, Ic, andII are strongly concentrated in late-type galaxies. However, attentionis drawn to a possible exception provided by SN 2001I. This SN IInoccurred in the E2 galaxy UGC 2836, which was not expected to harbor amassive young supernova progenitor.
| Supernova 2001id in UGC 12424
IAUC 7770 available at Central Bureau for Astronomical Telegrams.
| 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.
| 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.
| KISO survey for ultraviolet-excess galaxies. XIII.
Not Available
| 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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