J/A+A/669/A135 SDSS QSOs Al III and C III] emission lines (Buendia-Rios+, 2023)
Statistical analysis of Al III and C III] emission lines as virial black hole
mass estimators in quasars.
Buendia-Rios T.M., Negrete C.A., Marziani P. Dultzin D.
<Astron. Astrophys. 669, A135 (2023)>
=2023A&A...669A.135B 2023A&A...669A.135B (SIMBAD/NED BibCode)
ADC_Keywords: QSOs ; Redshifts ; Equivalent widths ; Line Profiles ; Optical
Keywords: quasar: emission lines - galaxies: active - quasars: general -
quasars: supermassive black holes - galaxies: nuclei -
galaxies: high-redshift
Abstract:
We test the usefulness of the intermediate ionisation lines AlIII 1860
and CIII] 1909 as reliable virial mass estimators for quasars.
We identify a sample of 309 quasars from the SDSS DR16 in the redshift
range 1.2<z<1.4 to have [OII] 3728 recorded on the same spectrum of
AlIII 1860, SiIII 1890, and CIII] 1909. We set the systemic quasar
redshift using careful measurements of [OII]. We then classified the
sources as Population A, ex- treme Population A (xA) and Population B,
and analysed the 1900Å blend using multi-component models to look
for systematic line shifts of the AlIII and CIII] along the quasar
main sequence.
We do not find significant shifts of the AlIII line peak in Pop. B and
the wide majority of Pop. A. For Pop. xA, a small median blueshift of
-250km/s was observed, motiva- ting a decomposition of the AlIII line
profile into a virialized component centred at rest frame and a
blueshifted component for an outflow emission. For Pop. B objects, we
proved the empirical necessity to fit a redshifted very broad
component (VBC), clearly seen in CIII], and analysed the physical
implications on a Pop. B composite spectrum using CLOUDY simulations.
We find consistent black hole mass estimations using AlIII and CIII]
as virial estimators for the bulk of Population A.
AlIII (and even CIII]) is a reliable virial black hole mass estimator
for Pop. A and B objects. xA sources deserve special attention due to
the significant blueshifted excess observed in the line profile of
AlIII, although not as large as those observed in CIV 1549.
Description:
Table B.1: lists the results of the line fitting procedures of Sec.
3.2. A detailed description of this table is in the Appendix B.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
tableb1.dat 603 309 Measurements of the individual spectral fits
--------------------------------------------------------------------------------
See also:
V/154 : Sloan Digital Sky Surveys (SDSS), Release 16 (DR16) (Ahumada+, 2020)
Byte-by-byte Description of file: tableb1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 19 A19 --- SDSS SDSS DR16 designation
(JHHMMSS.ss+DDMMSS.s) (SDSS)
21- 27 F7.5 --- z Redshift for this work, measured using
[OII] 3728 (considered in this work)
(z)
28- 35 F8.5 --- e_z [] Redshift (this work) error (z_ERR)
37- 43 F7.5 --- zSDSS Redshift given by the SDSS database
(z_SDSS)
45- 52 F8.5 --- e_zSDSS [] Redshift given by the SDSS database
error (zSDSSERR)
54- 56 I3 --- SN S/N Ratio measured around 1700A (SN)
58- 64 F7.2 10-10W/m2 C1700 Continuum Flux at 1700Å (C1700)
66- 71 F6.2 10-10W/m2 e_C1700 Continuum Flux at 1700Å error
(C1700_ERR)
73- 76 F4.2 --- N1700 Continuum normalisation at 1700Å
(N1700)
78- 81 F4.2 --- e_N1700 Continuum normalisation at 1700Å
error (N1700_ERR)
83- 86 A4 --- CIIIprof [G L L_xA ] CIII] 1909 BC Line Profile,
G = Gaussian, L = Lorentzian
(CIII_PROFILE)
88- 92 F5.2 --- alphaR1 Power Law Index in Region 1 (ALPHA_R1)
94- 97 F4.2 --- e_alphaR1 Power Law Index error (ALPHAR1ERR)
99-106 F8.2 10-20W/m2 FFEIII FeIII Flux (FLUX_FEIII)
108-114 F7.2 10-20W/m2 e_FFEIII FeIII Flux error (FLUXFEIIIERR)
116-121 F6.2 0.1nm shiftFEIII FeIII shift with respect to Rest frame
(SHIFT_FEIII)
123-127 F5.2 0.1nm e_shiftFEIII FeIII shift with respect to Rest frame
error (SHIFTFEIIIERR)
129-134 F6.2 0.1nm EWCIIIBC CIII] 1909 BC Equivalent Width
(EW_CIIIBC)
136-139 F4.2 0.1nm e_EWCIIIBC CIII] 1909 BC Equivalent Width error
(EWCIIIBCERR)
141-148 F8.2 10-20W/m2 FCIIIBC CIII] 1909 BC Flux (FLUX_CIIIBC)
150-156 F7.2 10-20W/m2 e_FCIIIBC CIII] 1909 BC Flux error
(FLUXCIIIBCERR)
158-161 I4 0.1nm shiftCIIIBC CIII] 1909 BC shift with respect to the
Rest frame (SHIFT_CIIIBC)
163-164 I2 0.1nm e_shiftCIIIBC CIII] 1909 BC shift with respect to the
Rest frame error (SHIFTCIIIBCERR)
166-169 I4 km/s FWHMCIIIBC CIII] 1909 BC Full Width at Half
Maximum (FWHM_CIIIBC)
171-174 I4 km/s e_FWHMCIIIBC CIII] 1909 BC FWHM error
(FWHMCIIIBCERR)
176-181 F6.2 0.1nm EWSIIII SiIII] 1892 Equivalent Width (EW_SIIII)
183-186 F4.2 0.1nm e_EWSIIII SiIII] 1892 Equivalent Width error
(EWSIIIIERR)
188-195 F8.2 10-20W/m2 FSIIII SiIII] 1892 Flux (FLUX_SIIII)
197-203 F7.2 10-20W/m2 e_FSIIII SiIII] 1892 Flux error (FLUXSIIIIERR)
205-208 I4 0.1nm shiftSIIII SiIII] 1892 shift with respect to the
Rest frame (SHIFT_SIIII)
210-211 I2 0.1nm e_shiftSIIII SiIII] 1892 shift with respect to the
Rest frame error (SHIFTSIIIIERR)
213-216 I4 km/s FWHMSIIII SiIII] 1892 FWHM (FWHM_SIIII)
218-221 I4 km/s e_FWHMSIIII SiIII] 1892 FWHM error (FWHMSIIIIERR)
223-228 F6.2 0.1nm EWAlIII AlIII 1860 Equivalent Width (EW_ALIII)
230-233 F4.2 0.1nm e_EWAlIII AlIII 1860 Equivalent Width error
(EWALIIIERR)
235-241 F7.2 10-20W/m2 FAlIII AlIII 1860 Flux (FLUX_ALIII)
243-249 F7.2 10-20W/m2 e_FAlIII AlIII 1860 Flux error (FLUXALIIIERR)
251-255 I5 0.1nm shiftAlIII AlIII 1860 shift with respect to the
Rest frame (SHIFT_ALIII)
257-258 I2 0.1nm e_shiftAlIII AlIII 1860 shift with respect to the
Rest frame error (SHIFTALIIIERR)
260-263 I4 km/s FWHMAlIII AlIII 1860 FWHM (FWHM_ALIII)
265-267 I3 km/s e_FWHMAlIII AlIII 1860 FWHM error (FWHMALIIIERR)
269-273 F5.3 --- AlIII/SIIII UV Diagnostic ratio
AlIII 1860/SIIII] 1892 (ALIII_SIIII)
275-279 F5.3 --- e_AlIII/SIIII UV Diagnostic ratio
AlIII 1860/SIIII] 1892 error
(ALIIISIIIIERR)
281-286 F6.3 --- CIII/SIIII UV Diagnostic ratio
CIII] 1909/SIIII] 1892 (CIII_SIIII)
288-292 F5.3 --- e_CIII/SIIII UV Diagnostic ratio
CIII] 1909/SIIII] 1892 error
(CIIISIIIIERR)
294-300 F7.2 10-20W/m2 FNIII NiII] 1750 Flux (FLUX_NIII)
302-308 F7.2 10-20W/m2 e_FNIII NiII] 1750 Flux err (FLUXNIIIERR)
310-313 I4 km/s FWHMNIII NiII] 1750 FWHM (FWHM_NIII)
315-319 I5 km/s e_FWHMNIII NiII] 1750 FWHM error (FWHMNIIIERR)
321-327 F7.2 10-20W/m2 FSIII SiII 1816 Flux (FLUX_SIII)
329-335 F7.2 10-20W/m2 e_FSIII SiII 1816 Flux error (FLUXSIIIERR)
337-340 I4 km/s FWHMSIII SiII 1816 FWHM (FWHM_SIII)
342-346 I5 km/s e_FWHMSIII SiII 1816 FWHM error (FWHMSIIIERR)
348-354 F7.2 10-20W/m2 FFeII FeII(UV191) Flux (FLUX_FEII)
356-362 F7.2 10-20W/m2 e_FFeII FeII(UV191) Flux error (FLUXFEIIERR)
364-367 I4 km/s FWHMFeII FeII(UV191) FWHM (FWHM_FEII)
369-373 I5 km/s e_FWHMFeII FeII(UV191) FWHM error (FWHMFEIIERR)
375-381 F7.2 10-20W/m2 FCIIINC CIII] 1909 NC Flux (FLUX_CIIINC)
383-391 F9.2 10-20W/m2 e_FCIIINC CIII] 1909 NC Flux error
(FLUXCIIINCERR)
393-396 I4 km/s FWHMCIIINC CIII] 1909 NC FWHM (FWHM_CIIINC)
398-401 I4 km/s e_FWHMCIIINC ?=- CIII] 1909 NC FWHM error
(FWHMCIIINCERR)
403-409 F7.2 10-20W/m2 FCIIIVBC CIII] 1909 VBC Flux (FLUX_CIIIVBC)
411-417 F7.2 10-20W/m2 e_FCIIIVBC CIII] 1909 VBC Flux error
(FLUXCIIIVBCERR)
419-422 I4 km/s FWHMCIIIVBC CIII] 1909 VBC FWHM (FWHM_CIIIVBC)
424-427 I4 km/s e_FWHMCIIIVBC CIII] 1909 VBC FWHM error
(FWHMCIIIVBCERR)
429-435 F7.2 10-20W/m2 FFe1914 FeIII 1914 from UV 34 Flux
(FLUX_FE1914)
437-443 F7.2 10-20W/m2 e_FFe1914 FeIII 1914 Flux error (FLUXFE1914ERR)
445-448 I4 km/s FWHMFe1914 FeIII 1914 FWHM (FWHM_FE1914)
450-452 I3 km/s e_FWHMFe1914 FeIII 1914 FWHM error (FWHMFE1914ERR)
454-456 F3.1 --- alphaR2 Power-Law Index in Region 2 (ALPHA_R2)
458-464 F7.2 10-20W/m2 FOII Flux [OII] 3728 (FLUX_OII)
466-471 F6.2 10-20W/m2 e_FOII Flux error [OII] 3728 (FLUXOIIERR)
473-476 I4 km/s FWHMOII FWHM [OII] 3728 (FWHM_OII)
478-481 I4 km/s e_FWHMOII ?=- FWHM error [OII] 3728
(FWHMOIIERR)
483-489 F7.2 10-10W/m2 C1350 Continuum Flux at 1350Å (C1350)
491-496 F6.2 10-10W/m2 e_C1350 Continuum Flux at 1350Å error
(C1350_ERR)
498-503 F6.2 10-10W/m2 C3700 Pseudo-continuum Flux at 3700Å
(C3700)
505-509 F5.2 10-10W/m2 e_C3700 Pseudo-continuum Flux at 3700Å
error (C3700_ERR)
511-516 F6.2 10-10W/m2 C5100 Continuum Flux at 5100Å (C5100)
518-522 F5.2 10-10W/m2 e_C5100 Continuum Flux at 5100Å error
(C5100_ERR)
524-528 F5.2 [10-7W] logL1860 Logarithmic Line Luminosity at 1860Å
(LOG_L1860)
530-534 F5.2 [10-7W] logL1892 Logarithmic Line Luminosity at 1892Å
(LOG_L1892)
536-540 F5.2 [10-7W] logL1909 Logarithmic Line Luminosity at 1909Å
(LOG_L1909)
542-546 F5.2 [10-7W] logLbol Logarithmic bolometric Luminosity at
1700Å (LOGLBOL)
548-551 F4.2 [10-7W] e_logLbol Logarithmic bolometric Luminosity at
1700Å error (LOGLBOL_ERR)
553-556 I4 km/s FWHMAB FWHM_AB using Sulentic et al.
(2017A&A...608A.122S 2017A&A...608A.122S) criterion
(FWHM_AB)
558-562 F5.3 [Msun] logMBHCIII Logarithmic Black Hole Mass of
CIII] 1909 (LOGMBHCIII)
564-568 F5.3 [Msun] logMBHAlIII Logarithmic Black Hole Mass of
AlIII 1860 (LOGMBHAlIII)
570-574 F5.3 --- REddCIII Eddington Ratio using CIII] 1909
(REDD_CIII)
576-580 F5.3 --- e_REddCIII Eddington Ratio using CIII] 1909 error
(REDDCIIIERR)
582-586 F5.3 --- REddALIII Eddington Ratio using AlIII 1860
(REDD_ALIII)
588-592 F5.3 --- e_REddALIII Eddington Ratio using AlIII 1860 error
(REDDALIIIERR)
594-598 F5.2 [10-7W] logLvir Logarithmic Virial Luminosity for
Pop. xA sources (LOGLVIR)
600-603 F4.2 [10-7W] e_logLvir Logarithmic Virial Luminosity for
Pop. xA sources error (LOGLVIR_ERR)
--------------------------------------------------------------------------------
Acknowledgements:
Tania Buendia Rios, tbuendia(at)astro.unam.mx
(End) Patricia Vannier [CDS] 21-Oct-2022