Back to Search
Start Over
Variability of broad and blueshifted component of [OIII]λ5007 in I ZWI
- Source :
-
New Astronomy . Apr2005, Vol. 10 Issue 5, p353-360. 8p. - Publication Year :
- 2005
-
Abstract
- Abstract: Although the existence of asymmetrical profile of [OIII]λ5007 has been discovered for ages, its filiation and physics are poorly understood. Two new spectra of I ZWI taken on November 16, 2001 and on December 3, 2002 were compared with the spectra taken by BG92. Following results are obtained. (1) The certain variations of broad [OIII] during about 10 years separating the observations are identified. The inferred length scale of broad [OIII] emitting region ranges from 0.3 to 3pc. By assuming a Keplerian motion in line emitting region, the material emitting broad [OIII] is likely to be located at the transient emission line region, between BLR and NLR. (2) We find a positive relation between the FeII emission and flux of Hβ (or continuum). On the other hand, the parameter RFe decreases with ionizing continuum marginally. (3) We detect a low ionized NLR in I ZWI, because of the low flux ratios [OIII]n/Hβn (∼1.7). [Copyright &y& Elsevier]
- Subjects :
- *GALAXIES
*RADIO sources (Astronomy)
*SPECTRUM analysis
*GEODESY
Subjects
Details
- Language :
- English
- ISSN :
- 13841076
- Volume :
- 10
- Issue :
- 5
- Database :
- Academic Search Index
- Journal :
- New Astronomy
- Publication Type :
- Academic Journal
- Accession number :
- 17664554
- Full Text :
- https://doi.org/10.1016/j.newast.2005.01.002