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LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00004666naa a2201141 4500
001oai:DiVA.org:uu-197176
003SwePub
008130318s1991 | |||||||||||000 ||eng|
024a https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-1971762 URI
024a https://doi.org/10.1086/1695402 DOI
040 a (SwePub)uu
041 a engb eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
100a Clavel, J.4 aut
2451 0a Steps toward determination of the size and structure of the broad-line region in active galactic nuclei. I. An 8 month campaign of monitoring NGC 5548 with IUE
264 1b American Astronomical Society,c 1991
338 a print2 rdacarrier
520 a The authors present emission-line and ultraviolet continuum observations of a type I Seyfert galaxy in which the time resolution is adequate for describing the character of variability. Using the IUE satellite, the nucleus of NGC 5548 was observed every 4 days for a period of 8 months. Its mean properties-continuum shape, line ratios-are not unusual for type I Seyfert galaxies, but it was found to be strongly variable. The ultraviolet continuum flux and broad emission line fluxes varied significantly, going through three large maxima and three deep minima. The great majority of all variations were well resolved in time. The data lend qualitative support to the view that photoionization by the nuclear continuum is responsible for driving the emission lines
650 7a NATURVETENSKAPx Fysikx Astronomi, astrofysik och kosmologi0 (SwePub)103052 hsv//swe
650 7a NATURAL SCIENCESx Physical Sciencesx Astronomy, Astrophysics and Cosmology0 (SwePub)103052 hsv//eng
653 a Experimental/ astronomical spectra
653 a galactic nuclei
653 a Seyfert galaxies
653 a ultraviolet astronomical observations/ UV
653 a spectra
653 a AD 1988 12 14 to 1989 08 07
653 a broad-line region
653 a active galactic nuclei
653 a NGC 5548
653 a IUE
653 a emission-line
653 a continuum
653 a type I Seyfert galaxy
653 a fluxes
653 a photoionization
653 a 117 to 330 nm/ A9850R Active and peculiar galaxies A9580M Space ultraviolet astronomical observations A9850G Radiation and spectra of galaxies/ wavelength 1.17E-07 to 3.3E-07 m
700a Reichert, G. A.4 aut
700a Alloin, D.4 aut
700a Crenshaw, D. M.4 aut
700a Kriss, G.4 aut
700a Krolik, J. H.4 aut
700a Malkan, M. A.4 aut
700a Netzer, H.4 aut
700a Peterson, B. M.4 aut
700a Wamsteker, W.4 aut
700a Altamore, A.4 aut
700a Baribaud, T.4 aut
700a Barr, P.4 aut
700a Beck, S.4 aut
700a Binette, L.4 aut
700a Bromage, G. E.4 aut
700a Brosch, N.4 aut
700a Diaz, A. I.4 aut
700a Filippenko, A. V.4 aut
700a Fricke, K.4 aut
700a Gaskell, C. M.4 aut
700a Giommi, P.4 aut
700a Glass, I. S.4 aut
700a Gondhalekar, P.4 aut
700a Hackney, R. L.4 aut
700a Halpern, J. P.4 aut
700a Hutter, D. J.4 aut
700a Jorsater, S.4 aut
700a Kinney, A. L.4 aut
700a Kollatschny, W.4 aut
700a Koratkar, A.4 aut
700a Korista, K. T.4 aut
700a Laor, A.4 aut
700a Lasota, J. P.4 aut
700a Leibowitz, E.4 aut
700a Maoz, D.4 aut
700a Martin, P. G.4 aut
700a Mazeh, T.4 aut
700a Meurs, E. J. A.4 aut
700a Nair, A. D.4 aut
700a O'Brien, P.4 aut
700a Pelat, D.4 aut
700a Perez, E.4 aut
700a Perola, G. C.4 aut
700a Ptak, R. L.4 aut
700a Rodriguez-Pascual, P.4 aut
700a Rosenblatt, E. I.4 aut
700a Sadun, A. C.4 aut
700a Santos-Lleo, M.4 aut
700a Shaw, R. A.4 aut
700a Smith, P. S.4 aut
700a Stirpe, G. M.4 aut
700a Stoner, R.4 aut
700a Sun, W. H.4 aut
700a Ulrich, M. -H4 aut
700a van Groningen, E.4 aut
700a Zheng, W.4 aut
773t Astrophysical Journald : American Astronomical Societyg 366:1, s. 64-8181q 366:1<64-8181x 0004-637Xx 1538-4357
856u https://repositorio.uam.es/bitstream/10486/13450/1/63303_63303.pdf
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-197176
8564 8u https://doi.org/10.1086/169540

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