J/ApJ/674/668 SDSS J102839.11+450009.4 Fe II emission lines (Wang+, 2008)
Strong narrow Fe II emission lines in the quasar SDSS J102839.11+450009.4.
Wang T., Dai H., Zhou H.
<Astrophys. J., 674, 668-675 (2008)>
=2008ApJ...674..668W 2008ApJ...674..668W
ADC_Keywords: QSOs ; Spectroscopy
Keywords: quasars: absorption lines - quasars: emission lines -
quasars: individual (SDSS J102839.11+450009.4)
Abstract:
We report identification of SDSS J102839.11+450009.4 as a peculiarly
interesting quasar. It shows very prominent narrow emission lines
(NELs) in FeII that are remarkably different from the broad FeII
multiplets commonly observed in quasars and Seyfert 1 galaxies. The
FeII NEL spectrum is dominated in the UV by transitions to the
low-lying ground levels with even parity, and by forbidden transitions
in the optical, suggesting its formation in a warm collisionally
ionized low density medium.
Description:
SDSS J1028+4500 was observed spectroscopically as a quasar target
during the Sloan Digital Sky Survey with a total exposure time of
4219s.
Objects:
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RA (2000) DE Designation(s)
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10 28 39.1 +45 00 09 SDSS J102839.11+450009.4 = QSO J1028+4500
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 44 50 Narrow FeII multiplets
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 8 F8.3 0.1nm Wave Vacuum wavelength
10- 31 A22 --- Trans Transition identification
33- 37 F5.2 [-] log(gf) Log of the oscillator strength
39- 41 I3 10-20W/m2 IObs ? Observed flux
43- 44 I2 10-20W/m2 e_IObs ? Uncertainty in IObs
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 09-Apr-2010