J/MNRAS/485/1477ivo://CDS.VizieR/J/MNRAS/485/1477doi:10.26093/cds/vizier.74851477CDSKarachentsev I.D.Karachentseva V.E.2024-08-19T20:17:09Z2022-11-17T13:45:05ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frgalaxiesapparent-magnituderadial-velocityvisible-astronomyWe present a list of 220 face-on, almost bulgeless galaxies assumed to be counterparts to the objects from the Reference Flat Galaxy Catalogue (RFGC). We selected the Sc-, Scd-, and Sd-type galaxies according to their apparent axial ratio log(r_25_)<0.05 and major standard angular diameter log(d_25_)>0.90 as defined in HyperLEDA. The sample objects are restricted by the radial velocity V_LG_<10000km/s and a declination of above -30deg. The morphological composition of our sample is quite similar to that of RFGC. We notice the following common properties of face-on bulgeless galaxies. About half of them have bar-like structures occurring in the whole range of the absolute magnitudes of galaxies: from -17 to -22mag. An essential part of our sample (27-50 per cent) exhibit distorted spiral patterns. The galaxies do not show significant asymmetry in numbers of the 'S'- and 'Z'-like spin orientation. The mean (pseudo-)bulge-to-total mass ratio for the sample is estimated as 0.11. Due to a negligible internal extinction, low-light background, and small projection effect, the face-on Sc-Sd discs are suitable objects to recognize their central nuclei as moderate-mass BH candidates. About 40-60 per cent of the galaxies have distinct unresolved nuclei, and their presence steeply depends on the luminosity of the host galaxy.2019MNRAS.485.1477Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/485/1477CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/485/1477https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/485/1477http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/485/1477https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/485/1477https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/485/1477http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/485/1477GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/485/1477/table1 (Basic properties of the face-on bulgeless galaxies)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/485/1477/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/485/1477/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/485/1477/table1?GETtext/xml+votable180.050000true0.95366287.47871470.0055555555555555566/50 62 67 78 145 659 745 911 948 980 1211 1597 2051 2207 2368 2380 2425 2432 2452 2792 3506 3581 3929 4070 4277 4373 4404 4525 4654 4692 4811 4820 4989 5001 5142 5302 5368 5428 5492 5715 5857 6031 6095 6129 6138 6176 6637 6649 6720 6740 6990 6997 7110 7282 7333 7403 7466 7736 7761 7898 8640 8642 9098 9333 9471 9740 9971 9998 10151 10204 10216 10469 10594 10650 10689 11069 11240 11387 11394 11434 11560 11707 11834 11897 12742 12763 13698 13728 14941 15061 15592 15611 16679 16721 16871 16884 16886 16975 17037 17057 17064 17389 17403 17492 17498 17696 17779 17995 18004 18052 18123-18124 18324 18394 18398 18536 18671 18790 18935 19051 19156 19510 19554 19618 19883 19978 19983 20008 20226 20309 20332 20354 20436 21173 21201 21286 21302 22468 22655 22679 22746 22775 23078 23088 23183 23194 23305 23715 23839 24895 24912 25006 25487 25524 25653 25889 26127 26175 26234 26303 26324 26330 26437 26451 26461 26664 26709 26724 26726 26742 26776 27206 27285 27333 27473 27487 27504 27718 27724 27728 27736 27814 27942 28208 28363 28521 28650 29818 31249 31460 31694 31784 31868 32202 32411 32572 35764 36074 36236 36255 36423 36528 36625 40216 40267 40299 40872 43519 43889 43996 44544 44635 46958 47035 48765 49090 49138https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/485/1477?format=asciiOpticaldefaultJ/MNRAS/485/1477/table1Basic properties of the face-on bulgeless galaxiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameGalaxy name in HyperLEDAmeta.id;meta.maincharBmagApparent integrated B magnitude from HyperLEDA with some refinements from NED (http://ned.ipac.caltech.edu) and other sourcesmagphot.mag;em.opt.BfloatVLGRadial velocity relative to the Local Group centroidkm/sspect.dopplerVelocintVmax? Rotation amplitude from HyperLEDAkm/ssrc.var.amplitudeintnullablemodDDistance modulus from HyperLEDA (1)magphot.mag.distModfloatMTypeMorphological type: Sc, Scd, or Sdsrc.morph.typecharBar[0/2] Presence of a bar (2)meta.noteintSimbadSimbad column added by the CDSmeta.ref.urlcharSpin[S/Z] The 'S'- or 'Z'-like spin orientation of spiral armssrc.morph.paramcharAsm[0/2] Presence of a significant asymmetry of the spiral structure (3)src.morph.paramintNuc[012, ] Presence ('2') or apparent absence ('0') of an unresolved nucleus in a galaxy, while '1' characterizes the central concentration of a diffuse shape (4)meta.code;src.morphcharBMAGAbsolute B-band magnitude of a galaxy corrected for the Galactic extinction according to Schlegel, Finkbeiner & Davis (1998ApJ...500..525S)magphys.magAbsfloat_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.main