J/ApJ/632/799ivo://CDS.VizieR/J/ApJ/632/799doi:10.26093/cds/vizier.16320799CDSPeterson B.M.Bentz M.C.Desroches L.-B.Filippenko A.V.Ho L.C.,Kaspi S.Laor A.Maoz D.Moran E.C.Pogge R.W.Quillen A.C.2017-07-11T13:09:19Z2008-01-09T12:36:11ZCDS support team

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

cds-question@unistra.fractive-galactic-nucleiseyfert-galaxiesultraviolet-astronomyA reverberation-mapping program on NGC 4395, the least luminous known Seyfert 1 galaxy, undertaken with the Space Telescope Imaging Spectrograph on the Hubble Space Telescope yields a measurement of the mass of the central black hole M_BH_=(3.6+/-1.1)x10^5^M_{sun}_. The observations consist of two visits of five orbits each, in 2004 April and July. During each of these visits, the UV continuum varied by at least 10% (rms), and only C IV {lambda}1549 showed corresponding variations large enough to reliably determine the emission-line lag, which was measured to be of order 1-hr for both visits.2005ApJ...632..799Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/632/799CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/ApJS/98/477 : Optical spectral atlas of Seyfert nuclei (Ho+ 1995)J/ApJS/112/315 : Spectroscopic parameters of Seyfert nuclei (Ho+ 1997)J/ApJS/133/77 : VLA radio continuum survey of Seyfert galaxies (Ho+, 2001)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/632/799https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/632/799http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/632/799https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/632/799https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/632/799http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/632/799GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapUVdefaultJ/ApJ/632/799/dataLight curves for visits 2 and 3recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTSimbad column added by the CDSmeta.codecharHJDJulian Date of observationdtime.epochdoubleF13501350{AA} flux (1)1e-16W.m**-2.nm**-1phot.fluxfloate_F1350Uncertainty in F1350 (1)1e-16W.m**-2.nm**-1stat.errorfloatFCIVC IV (1549{AA}) integrated line flux (2)fW.m**-2phot.fluxfloate_FCIVUncertainty in FCIV (2)fW.m**-2stat.errorfloat