Excitation and temperature of extended gas in active galaxies. I Observations
dc.contributor.author | Storchi-Bergmann, Thaisa | pt_BR |
dc.contributor.author | Wilson, Andrew S. | pt_BR |
dc.contributor.author | Binette, Luc | pt_BR |
dc.contributor.author | Mulchaey, John Scott | pt_BR |
dc.date.accessioned | 2014-07-23T02:04:39Z | pt_BR |
dc.date.issued | 1996 | pt_BR |
dc.identifier.issn | 0004-6361 | pt_BR |
dc.identifier.uri | http://hdl.handle.net/10183/98390 | pt_BR |
dc.description.abstract | We have obtained long-slit spectroscopy of five active galaxies showing extended high excitation emission lines reaching distances of several kiloparsecs from the nuclei. Measurement of the fluxes of weak lines, such as [OIII]λ4363 and HeIIλ4686, requires careful subtraction of the contribution of the stellar population, and the procedure for this subtraction is discussed in detail. For each galaxy, we present emission-line ratios for the nucleus and the extended gas at the most distant locations for which the fluxes of the weaker high excitation lines can be measured with an uncertainty ≤30%. In a companion paper (Paper II), these line ratios are used in a reevaluation of photoionization models of extended gas in active galaxies. | en |
dc.format.mimetype | application/pdf | |
dc.language.iso | eng | pt_BR |
dc.relation.ispartof | Astronomy and Astrophysics. Berlin. Vol. 312, no. 2 (Aug. 1996), p. 357-364 | pt_BR |
dc.rights | Open Access | en |
dc.subject | Galaxies: active | en |
dc.subject | Astrofisica extragalatica | pt_BR |
dc.subject | Galaxias seyfert | pt_BR |
dc.subject | Galaxies: ISM | en |
dc.subject | Fotoionizacao | pt_BR |
dc.subject | Galaxies: nuclei | en |
dc.subject | Galaxies: Seyfert | en |
dc.subject | Nucleo galatico | pt_BR |
dc.subject | Galáxias | pt_BR |
dc.subject | Temperatura | pt_BR |
dc.subject | Populacoes estelares | pt_BR |
dc.title | Excitation and temperature of extended gas in active galaxies. I Observations | pt_BR |
dc.type | Artigo de periódico | pt_BR |
dc.identifier.nrb | 000148831 | pt_BR |
dc.type.origin | Estrangeiro | pt_BR |
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