J/MNRAS/495/3592ivo://CDS.VizieR/J/MNRAS/495/3592doi:10.26093/cds/vizier.74953592CDSKarachentsev I.D.Kaisin S.S.2025-05-06T20:14:01Z2023-09-14T14:12:08ZCDS support team

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

cds-question@unistra.frdwarf-galaxiesgalaxiesstar-forming-regionsvisible-astronomyinfrared-astronomyultraviolet-astronomyWe used the H{alpha} images from a large sample of nearby late-type dwarf galaxies to investigate properties of their emission structure. The sample consists of 300 galaxies of the irregular (Irr), Magellanic irregular (Im), blue compact dwarf (BCD), and transition (Tr) types situated within a distance of 11Mpc. In each galaxy, we indicated the number of compact HII regions, the presence of bubble-like or filament-like structures, the presence of a faint diffuse emission, and a sign of the global burst. The larger the luminosity of a galaxy, the greater number of compact HII sources in it. The integral and specific star formation rates (SFRs) of the dwarf increase steeply with the increase of the number of HII regions showing the evidence of the epidemic character of the star formation process. The dwarf galaxies with emission-line bubbles, or filaments, or signs of the global star formation burst have approximately the same hydrogen-mass-to-luminosity ratio as that of the whole sample objects. However, their mean SFR is significantly higher than that of other galaxies in the sample. Emission bubble-like structures are found in the nearby dwarfs with a frequency of one case per four to five galaxies. Their linear diameters are close to those expected for supernova remnants. The mean specific SFR for the nearby late-type dwarfs is close to the Hubble parameter, H_0_=-10.14dex/yr, consistent with the sluggish cosmic star formation history of galaxies of this kind.2020MNRAS.495.3592Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/495/3592CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/145/101 : Updated nearby galaxy catalog (Karachentsev+, 2013)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/495/3592https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/495/3592http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/495/3592https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/495/3592https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/495/3592http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/495/3592GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/495/3592/tablea1 (Observational data on 309 LV dwarf galaxies)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/495/3592/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/495/3592/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/495/3592/tablea1?GETtext/xml+votable180.050000true0.093958339.49541670.0055555555555555565/530 6/287 393 739 782 800 816 901 973 1768 2079 2119 2130 2144 2320-2321 2332 2411 2414 2417 2622 2717 2728 2873 2892 3250 3260 3278 3304 3381 3436 3506 3543 3561 3699 3860 3958 4121 4433 4507 4518 4533 4928 5008 5039 5067 5148 5171 5180 5267 5283 5287 5339 5419 5489 5504 5623 5633 5636 5641 5862 5876 5890 5902 5982-5983 5996 6027 6108 6399 6488 6500 6560 6868 6921 6981 7483 7523 7579 7599 7603-7604 7606-7607 7622 7627 7649-7650 7769 7799 7878 7946 7952 7956 7970 8028 8120 8908 9187 10265-10266 10479 10532 10538 10561 10607 10627 10659 10671 10755 10761-10762 10784 10793 10798 10800 10808-10809 10815 10841-10842 10881 10889 10896 10899 10905 10908 10910 10934 10945 10959 10970 10976 10979 10999 11006 11009 11019 11037 11041 11043 11045 11072 11120 11161 11172 11191 11270 11434 11450 11639 11719 11787 11933 11944 12199 13637 15558 15585 15590 15594-15595 16016 16076 16414 16416 16459 16544 16580 16687 16695 16697 16744 16833 17165 18335 18393-18394 18397-18398 18419 18429 19534 19565 19678 19779 19833 19990 20476 20605 20769 20929 21089 21362 22039 22348 22379 22427 22495 23684 23710 24437 24632 24952 24956 25344 26047 26134 26270 26294 26329 26342 26365 26796 26808 26811 26858 27024 27152 27229 27285 27351 27383 27441 27482 27603 27677 27715 27719 27729 27736 27904 27926 27937 28003 28035 28087 28100 28142 28147 28149 28152 28156 28481 28492-28493 28505 28510-28511 28539-28540 28543 28636-28637 29699 33986 34755 35452 35482 36164 40228 40243 40328 40335 40428 40581 41917 41946 41987 43246 43293 43333 43420 43427 43430 43499 43634 43706 43763 43883-43884 43924 43972 46339 46545 46597 48942https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/495/3592?format=asciiUVOpticalInfrareddefaultJ/MNRAS/495/3592/tablea1Observational data on 309 LV dwarf galaxiesSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameGalaxy namemeta.id;meta.maincharMorphMorphological type (1)src.morph.typecharDistDistanceMpcpos.distancefloatA26Linear diameter measured within the Holmberg isophotekpcphys.size.diameterfloatSBSurface brightness in the B-band within the Holmberg diametermag.arcsec**-2phot.mag.sbfloatlogLKLogarithm of the integral luminosity in the K-band (2)log(solLum)phys.luminosity;em.IRfloatlogMHI? Logarithm of the neutral hydrogen masslog(solMass)phys.massfloatnullablelogSFRHaLogarithm of the integral star-formation rate determined via the H{alpha} flux (3)log(solMass.yr**-1)phys.SFRfloatlogSFRFUV? Logarithm of the integral star-formation rate determined via the FUV-band flux (4)log(solMass.yr**-1)phys.SFRfloatnullableNCNumber of compact emission knotsmeta.numberintNBNumber of bubblesmeta.numberintFil[0/1] Presence or absence of filament-like structuresmeta.codeintDif[0/1] Presence or absence of a diffuse emissionmeta.codeintGBE[0/1] Presence or absence of the global bright emissionmeta.codeint_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.mainnullable_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainnullable