J/MNRAS/297/255ivo://CDS.VizieR/J/MNRAS/297/255doi:10.26093/cds/vizier.72970255CDSKnapen J.H.2024-06-25T20:17:58Z2014-12-04T10:30:49ZCDS support team

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

cds-question@unistra.frh-ii-regionsgalaxiesvisible-astronomyFrom a new mosaic image in the H-{alpha} line of the complete disc of the spiral galaxy M100, a catalogue is composed listing 1948 individual HII regions. For each HII region, the catalogue gives its position relative to the centre of the galaxy, its deprojected distance to the centre, its radius, and its calibrated luminosity. An indication is included as to whether the HII region is located in the arms, between them, or in the circumnuclear star-forming region. The H-{alpha} image of M100 was obtained during two observing runs with the 4.2m WHT on La Palma, using the TAURUS camera in imaging mode. Since the field of view in this setup is limited by the filter size to around 5' diameter, four fields of the galaxy were imaged, two (eastern half of M100) during the night of 27 May 1991, and two (western half) during the night of 14 March 1992. Narrow band redshifted H-{alpha} filters with width of 15{AA} were used for the observations, centred at 6601{AA} for the H-{alpha} line observations (redshifted using the galaxy's systemic velocity of 1571km/s) and at 6577{AA} and 6565{AA} for the continuum. Exposure times were 1200 seconds for both the on-line and the continuum image on the first night, and 2x900 seconds on the second night. An EEV CCD chip was used during both observing runs, with a projected pixel size of 0.279arcsec, and a size of 1180x1280 pixels.1998MNRAS.297..255Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/297/255CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/297/255https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/297/255http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/297/255https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/297/255https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/297/255http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/297/255GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/297/255/catalog (The catalogue of HII regions in M100)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/297/255/catalog?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/297/255/catalog?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/297/255/catalog?GETtext/xml+votable180.050000true185.672189415.84960370.0055555555555555566/28033 28035https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/297/255?format=asciiOpticaldefaultJ/MNRAS/297/255/catalogThe catalogue of HII regions in M100ID[1,1948]+ identification numbermeta.id;meta.mainintprimaryindexedXposX position (toward East) from centre (1)arcsecpos.cartesian.x;instr.detfloatYposY position (toward North) from centre (1)arcsecpos.cartesian.y;instr.detfloatDistDeprojected distance from centre (1)arcsecpos.angDistancefloatPAPosition angle wrt centre, N over Edegpos.posAngfloatLocation[0,2] 0=interarm; 1=arm; 2=centremeta.codeintRadiusRadius of HII region, in arcsecarcsecphys.angSize;obs.fieldfloatFluxCalibrated Flux in units of 10**36 erg/s1e+29Wphot.flux;em.line.HalphafloatSimbadSimbad column added by the CDSmeta.ref.urlchar_RABcompPosition from offsets (right ascension part)degpos.eq.ra;meta.main_DEBcompPosition from offsets (declination part)degpos.eq.dec;meta.main_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data)degpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data)degpos.eq.decnullableindexed