VARIATIONS OF ABSORPTION TROUGHS IN THE QUASAR SDSS J125216.58+052737.7

In this work, we analyze the spectra of quasar J125216.58+052737.7 (z[subem] = 1.9035) which was observed by SDSS-I/II on 2003 January 30 and by BOSS on 2011 April 2. Both the continuum and the absorption spectra of this quasar show obvious variations between the two epochs. In the SDSS-I/II spectru...

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Bibliographic Details
Published in:The Astrophysical journal 2015-01, Vol.799 (1), p.1-8
Main Authors: Chen, Zhi-Fu, Qin, Yi-Ping
Format: Article
Language:English
Subjects:
Absorption
ABSORPTION SPECTRA
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
CARBON IONS
COMPARATIVE EVALUATIONS
Continuums
Frames
GALAXIES
GASES
Ionization
QUASARS
Rest
Spectra
Time
VARIATIONS
VELOCITY
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Summary:In this work, we analyze the spectra of quasar J125216.58+052737.7 (z[subem] = 1.9035) which was observed by SDSS-I/II on 2003 January 30 and by BOSS on 2011 April 2. Both the continuum and the absorption spectra of this quasar show obvious variations between the two epochs. In the SDSS-I/II spectrum, we detect 8 C IV [lambda[lambda]]1548, 1551 absorption systems, which are detected at z[subabs] = 1.9098, 1.8948, 1.8841, 1.8770, 1.8732, 1.8635, 1.8154, and 1.7359, respectively, and one Mg II [lambda[lambda]]2796, 2803 absorption system at z[subabs] = 0.9912. Based on the variability analysis, the absorption systems that disappeared and weakened are likely to be intrinsic to the quasar. Well-coordinated variations of the six C IV [lambda[lambda]]1548, 1551 absorption systems that disappeared and weakened, occurring on a timescale of 1026.7 days at the quasar rest frame, can be interpreted as a result of global changes in the ionization state of the absorbing gas.
ISSN:1538-4357
0004-637X
1538-4357
DOI:10.1088/0004-637X/799/1/63