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STRONG RESPONSE OF THE VERY BROAD H beta EMISSION LINE IN THE LUMINOUS RADIO-QUIET QUASAR PG 1416-129
Wang, J.; Li, Y.
2011-11-20
Source PublicationASTROPHYSICAL JOURNAL LETTERS
Volume742Issue:1
AbstractWe report new spectroscopic observations performed in 2010 and 2011 for the luminous radio-quiet quasar PG 1416-129. Our new spectra with high quality cover both H beta and H alpha regions, and show negligible line profile variation within a timescale of one year. The two spectra allow us to study the variability of the Balmer line profile by comparing the spectra with previous ones taken at 10 and 20 years ago. By decomposing the broad Balmer emission lines into two Gaussian profiles, our spectral analysis suggests a strong response to the continuum level for the very broad component, and significant variations in both bulk blueshift velocity/FWHM and flux for the broad component. The new observations additionally indicate flat Balmer decrements (i.e., too strong H beta emission) at the line wings, which is hard to reproduce using recent optically thin models. With these observations we argue that a separate inner optically thin emission-line region might not be necessary in the object to reproduce the observed line profiles.
KeywordGalaxies: Active Quasars: Emission Lines Quasars: Individual (Pg 1416-129)
DOI10.1088/2041-8205/742/1/L12
Indexed BySCI
Language英语
WOS IDWOS:000296763600012
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Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/8023
Collection光学天文研究部
AffiliationChinese Acad Sci, Natl Astron Observ, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Wang, J.,Li, Y.. STRONG RESPONSE OF THE VERY BROAD H beta EMISSION LINE IN THE LUMINOUS RADIO-QUIET QUASAR PG 1416-129[J]. ASTROPHYSICAL JOURNAL LETTERS,2011,742(1).
APA Wang, J.,&Li, Y..(2011).STRONG RESPONSE OF THE VERY BROAD H beta EMISSION LINE IN THE LUMINOUS RADIO-QUIET QUASAR PG 1416-129.ASTROPHYSICAL JOURNAL LETTERS,742(1).
MLA Wang, J.,et al."STRONG RESPONSE OF THE VERY BROAD H beta EMISSION LINE IN THE LUMINOUS RADIO-QUIET QUASAR PG 1416-129".ASTROPHYSICAL JOURNAL LETTERS 742.1(2011).
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