Matches in SemOpenAlex for { <https://semopenalex.org/work/W2023132348> ?p ?o ?g. }
Showing items 1 to 54 of
54
with 100 items per page.
- W2023132348 endingPage "148" @default.
- W2023132348 startingPage "148" @default.
- W2023132348 abstract "view Abstract Citations (20) References (28) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Ultraviolet Spectrophotometry of Three LINERs Goodrich, R. W. ; Keel, W. C. Abstract Three galaxies known to be LINERs were observed spectroscopically in the ultraviolet in an attempt to detect the presumed nonthermal continuum source thought to be the source of photoionization in the nuclei. NGC 4501 was found to be too faint for study with the IUE spectrographs, while NGC 5005 had an extended ultraviolet light profile. Comparison with the optical light profile of NGC 5005 indicates that the ultraviolet source is distributed spatially in the same manner as the optical starlight, probably indicating that the ultraviolet excess is due to a component of hot stars in the nucleus. These stars contribute detectable absorption features longward of 2500 A; together with optical data, the IUE spectra suggest a burst of star formation about 1 billion yr ago, with a lower rate continuing to produce a few OB stars. In NGC 4579, a point source contributing most of the ultraviolet excess is found that is much different than the optical light distribution. Furthermore, the ultraviolet to X-ray spectral index in NGC 4579 is 1.4, compatible with the UV to X-ray indices found for samples of Seyfert galaxies. This provides compelling evidence for the detection of the photoionizing continuum in NGC 4579 and draws the research fields of normal galaxies and active galactic nuclei closer together. The emission-line spectrum of NGC 4579 is compared with calculations from a photoionization code, CLOUDY, and several shock models. The photoionization code is found to give superior results, adding to the increasing weight of evidence that the LINER phenomenon is essentially a scaled-down version of the Seyfert phenomenon. Publication: The Astrophysical Journal Pub Date: June 1986 DOI: 10.1086/164235 Bibcode: 1986ApJ...305..148G Keywords: Astronomical Spectroscopy; Galactic Nuclei; Seyfert Galaxies; Star Distribution; Stellar Evolution; Ultraviolet Spectroscopy; Absorption Spectra; Active Galactic Nuclei; B Stars; Emission Spectra; Hot Stars; Nonthermal Radiation; Photoionization; Spectral Energy Distribution; Visible Spectrum; Astrophysics; GALAXIES: NUCLEI; ULTRAVIOLET: SPECTRA full text sources ADS | data products SIMBAD (4) NED (4) MAST (1) INES (1)" @default.
- W2023132348 created "2016-06-24" @default.
- W2023132348 creator A5044960520 @default.
- W2023132348 creator A5077171074 @default.
- W2023132348 date "1986-06-01" @default.
- W2023132348 modified "2023-10-10" @default.
- W2023132348 title "Ultraviolet spectrophotometry of three LINERs" @default.
- W2023132348 doi "https://doi.org/10.1086/164235" @default.
- W2023132348 hasPublicationYear "1986" @default.
- W2023132348 type Work @default.
- W2023132348 sameAs 2023132348 @default.
- W2023132348 citedByCount "9" @default.
- W2023132348 countsByYear W20231323482015 @default.
- W2023132348 crossrefType "journal-article" @default.
- W2023132348 hasAuthorship W2023132348A5044960520 @default.
- W2023132348 hasAuthorship W2023132348A5077171074 @default.
- W2023132348 hasConcept C120665830 @default.
- W2023132348 hasConcept C121332964 @default.
- W2023132348 hasConcept C1276947 @default.
- W2023132348 hasConcept C150846664 @default.
- W2023132348 hasConcept C2776798109 @default.
- W2023132348 hasConcept C43481613 @default.
- W2023132348 hasConcept C44870925 @default.
- W2023132348 hasConcept C4839761 @default.
- W2023132348 hasConcept C98444146 @default.
- W2023132348 hasConceptScore W2023132348C120665830 @default.
- W2023132348 hasConceptScore W2023132348C121332964 @default.
- W2023132348 hasConceptScore W2023132348C1276947 @default.
- W2023132348 hasConceptScore W2023132348C150846664 @default.
- W2023132348 hasConceptScore W2023132348C2776798109 @default.
- W2023132348 hasConceptScore W2023132348C43481613 @default.
- W2023132348 hasConceptScore W2023132348C44870925 @default.
- W2023132348 hasConceptScore W2023132348C4839761 @default.
- W2023132348 hasConceptScore W2023132348C98444146 @default.
- W2023132348 hasLocation W20231323481 @default.
- W2023132348 hasOpenAccess W2023132348 @default.
- W2023132348 hasPrimaryLocation W20231323481 @default.
- W2023132348 hasRelatedWork W1585398141 @default.
- W2023132348 hasRelatedWork W1654469713 @default.
- W2023132348 hasRelatedWork W1730788218 @default.
- W2023132348 hasRelatedWork W2044998295 @default.
- W2023132348 hasRelatedWork W2171963590 @default.
- W2023132348 hasRelatedWork W3014943580 @default.
- W2023132348 hasRelatedWork W3104688376 @default.
- W2023132348 hasRelatedWork W3148358365 @default.
- W2023132348 hasRelatedWork W4254298610 @default.
- W2023132348 hasRelatedWork W4380789787 @default.
- W2023132348 hasVolume "305" @default.
- W2023132348 isParatext "false" @default.
- W2023132348 isRetracted "false" @default.
- W2023132348 magId "2023132348" @default.
- W2023132348 workType "article" @default.