J/ApJS/253/46 Optical spectroscopy of Fermi blazars (Paliya+, 2021)
The central engines of Fermi blazars.
Paliya V.S., Dominguez A., Ajello M., Olmo-Garcia A., Hartmann D.
<Astrophys. J. Suppl. Ser., 253, 46 (2021)>
=2021ApJS..253...46P 2021ApJS..253...46P
ADC_Keywords: BL Lac objects; Spectra, optical; Redshifts; Gamma rays;
Velocity dispersion; Black holes
Keywords: BL Lacertae objects ; Black holes ; Blazars ; Radio loud quasars ;
Supermassive black holes ; Spectral line identification
Abstract:
We present a catalog of central engine properties, i.e., black hole
mass (MBH) and accretion luminosity (Ldisk), for a sample of 1077
blazars detected with the Fermi Large Area Telescope. This includes
broad emission-line systems and blazars whose optical spectra lack
emission lines but are dominated by the absorption features arising
from the host galaxy. The average MBH for the sample is
<logMBH,allM☉_≥8.60, and there is evidence suggesting the
association of more massive black holes with absorption-line systems.
Our results indicate a bimodality of Ldisk in Eddington units
(Ldisk/LEdd) with broad-line objects tend to have a higher
accretion rate (Ldisk/LEdd>0.01). We have found that
Ldisk/LEdd and Compton dominance (CD; the ratio of the inverse
Compton to synchrotron peak luminosities) are positively correlated at
the >5σ confidence level, suggesting that the latter can be used
to reveal the state of accretion in blazars. Based on this result, we
propose a CD-based classification scheme. Sources with CD>1 can be
classified as high-Compton-dominated or HCD blazars, whereas those
with CD≲1 are low-Compton-dominated (LCD) objects. This scheme is
analogous to that based on the mass accretion rate proposed in the
literature; however, it overcomes the limitation imposed by the
difficulty in measuring Ldisk and MBH for objects with
quasi-featureless spectra. We conclude that the overall physical
properties of Fermi blazars are likely to be controlled by the
accretion rate in Eddington units.
Description:
A good fraction of the 1077 γ-ray-detected blazars in our sample
have optical spectrum taken from the SDSS-DR16; however, we do not use
the emission-/absorption-line measurements obtained with the automatic
SDSS data reduction pipeline.
During the data analysis, every optical spectrum was individually
analyzed rather than by running any automatic pipeline. See Section 3.
File Summary:
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FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table2.dat 41 54 The spectral parameters associated with
the Hα emission line
table3.dat 55 173 The spectral parameters associated with
the Hβ emission line
table4.dat 54 492 The spectral parameters associated with
the MgII emission line
table5.dat 55 193 The spectral parameters associated with
the CIV emission line
table6.dat 38 346 The stellar velocity dispersion and line
luminosity upper limit measurements
for 346 blazars
table7.dat 67 684 The central engine and SED properties of
emission line blazars
table8.dat 67 346 The central engine and SED properties of
absorption line blazars
table10.dat 91 1077 References used in this work
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See also:
III/175 : Optical spectroscopy of radio sources (Stickel+, 1989-94)
VIII/34 : Parkes Half-Jansky Flat-Spectrum Sample (Drinkwater + 1997)
VII/250 : The 2dF Galaxy Redshift Survey (2dFGRS) (2dFGRS Team, 1998-2003)
VII/259 : 6dF galaxy survey final redshift release (Jones+, 2009)
IX/67 : Incremental Fermi LAT 4th cat. (4FGL-DR3) (Fermi-LAT col., 2022)
J/MNRAS/238/1171 : Optical/IR observ. of Radio Galaxies & QSOs (Dunlop+, 1989)
J/A+AS/80/103 : Opt. spectroscopy of 1Jy, S4 and S5 sources (Stickel+ 1989)
J/A+AS/98/393 : 1Jy BL Lac Objects: Observational Data (Stickel+ 1993)
J/A+AS/100/395 : Opt. spectroscopy of 1Jy, S4 and S5 sources (Stickel+ 1993)
J/A+AS/97/483 : Opt. spectroscopy of 1Jy, S4 and S5 sources (Stickel+ 1993)
J/A+AS/105/67 : Opt. spectroscopy of 1Jy, S4 and S5 sources (Stickel+ 1994)
J/A+AS/110/469 : AGN from the RASS (Bade+, 1995)
J/AJ/115/1253 : Deep X-Ray Radio Blazar Survey (DXRBS). I. (Perlman+ 1998)
J/ApJS/126/133 : The FIRST bright quasar survey. II. (White+, 2000)
J/MNRAS/323/757 : Deep X-Ray Radio Blazar Survey (DXRBS). II. (Landt+, 2001)
J/ApJS/140/143 : HST FOS spectral atlas (Bechtold+, 2002)
J/ApJS/145/199 : Optical sp. atlas of low-redshift AGN (Marziani+, 2003)
J/ApJ/590/109 : Gamma-ray blazar in northern sky (Sowards-Emmerd+, 2003)
J/ApJ/609/564 : Blazar counterparts for 3EG sources (Sowards-Emmerd+, 2004)
J/MNRAS/371/703 : MILES library of empirical spectra (Sanchez-Blazquez+, 2006)
J/A+A/470/787 : High energy peaked BL Lacs optical sp. (Piranomonte+, 2007)
J/ApJS/175/97 : CGRaBS: γ-ray blazar candidates (Healey+, 2008)
J/A+A/488/867 : Synchrotron peak frequency of 135 AGN (Nieppola+, 2008)
J/ApJS/180/67 : Phot. selection of quasars from SDSS. II. (Richards+, 2009)
J/MNRAS/404/1639 : MILES base models & new line index system (Vazdekis+, 2010)
J/ApJ/740/98 : Synchroton peak for blazars & radio galaxies (Meyer+, 2011)
J/ApJS/194/45 : QSO properties from SDSS-DR7 (Shen+, 2011)
J/ApJ/748/49 : Opt. spectroscopy of 1LAC broad-line blazars (Shaw+, 2012)
J/other/RMxAA/48.9 : Optical sp. atlas of MOJAVE AGNs (Torrealba+, 2012)
J/ApJ/767/14 : MASIV survey III. Optical identifications (Pursimo+, 2013)
J/ApJ/764/135 : Spectroscopic redshifts of BL Lac objects (Shaw+, 2013)
J/AJ/146/10 : Sp. of 120 emission-line ICRF2 candidates (Titov+, 2013)
J/ApJ/780/73 : Redshifts of BL Lac objects from Fermi (Ajello+, 2014)
J/other/Nat/515.376 : Power of relativistic jets in blazars (Ghisellini+, 2014)
J/MNRAS/451/4193 : Fermi/non-Fermi blazars jet power & accretion (Chen+, 2015)
J/A+A/591/A21 : Optical flux behaviour of Fermi blazars (Marchesini+, 2016)
J/MNRAS/460/3202 : Radio-loud AGNs (Olguin-Iglesias+, 2016)
J/ApJ/835/L38 : Fermi blazars with Doppler factors (Fan+, 2017)
J/ApJ/850/74 : Swift/BAT AGN Spectroscopic Survey. I. (Koss+, 2017)
J/ApJ/851/33 : Multi-wavelength analysis of CGRaBS blazars (Paliya+, 2017)
J/AJ/153/157 : Cand. ICRF flat-spectrum radio sources. III. (Titov+, 2017)
J/A+A/615/A167 : Catalog of NLS1s galaxies in 6dFGS survey (Chen+, 2018)
J/ApJ/861/130 : BL Lac objects GTC low resolution sp. (Landoni+, 2018)
J/ApJ/881/154 : BAT AGN spectroscopic survey. XVI. Blazars (Paliya+, 2019)
J/ApJS/247/33 : Fermi LAT fourth source catalog (4FGL) (Abdollahi+, 2020)
J/A+A/643/A103 : Fermi-LAT low-energy counterparts (Pena-Herazo+, 2020)
J/ApJ/914/42 : Radio data of 4FGL-DR2 unassoc. sources (Bruzewski+, 2021)
http://fermi.gsfc.nasa.gov/ssc/data/access/lat/10yr_catalog/ : 4FGL-DR2
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 12 A12 --- 4FGL 4FGL-DR2 catalog identifier
14- 18 F5.3 --- z [0.027/0.55] Spectroscopic redshift
20- 23 I4 km/s FWHM [1384/8991] Full-Width at Half-Maximum
of Hα
25- 28 I4 km/s e_FWHM [52/5494] Uncertainty in FWHM
30- 35 F6.3 [10-7W] logLHa [40.89/44.41] log Hα luminosity in erg/s
37- 41 F5.3 [10-7W] e_logLHa [0.004/0.4] Uncertainty in logLHa
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 12 A12 --- 4FGL 4FGL-DR2 catalog identifier
14- 18 F5.3 --- z [0.048/1.52] Spectroscopic redshift
20- 25 F6.3 [10-7W] logL5100 [42.97/47.42] log 5100Å continuum
luminosity (1)
27- 31 F5.3 [10-7W] e_logL5100 [0.001/0.3] Uncertainty in logL5100 (1)
33- 37 I5 km/s FWHM [1200/12528] Full-Width at Half-Maximum
of Hβ
39- 42 I4 km/s e_FWHM [0/4699] Uncertainty in FWHM
44- 49 F6.3 [10-7W] logLHb [40.79/44.56] log Hβ luminosity (1)
51- 55 F5.3 [10-7W] e_logLHb [0.003/0.4] Uncertainty in logLHb (1)
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Note (1): In units of erg/s.
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Byte-by-byte Description of file: table4.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 12 A12 --- 4FGL 4FGL-DR2 catalog identifier
14- 18 F5.3 --- z [0.29/2.37] Spectroscopic redshift
20- 25 F6.3 [10-7W] logL3000 [42.55/46.9] log 3000Å continuum
luminosity (1)
27- 31 F5.3 [10-7W] e_logL3000 [0.001/0.04] Uncertainty in logL3000 (1)
33- 36 I4 km/s FWHM [1367/8372] Full-Width at Half-Maximum
of MgII
38- 41 I4 km/s e_FWHM [41/5074] Uncertainty in FWHM
43- 48 F6.3 [10-7W] logLMgII [40.97/44.8] log MgII luminosity (1)
50- 54 F5.3 [10-7W] e_logLMgII [0.003/0.42] Uncertainty in logLMgII
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Note (1): In units of erg/s.
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Byte-by-byte Description of file: table5.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 12 A12 --- 4FGL 4FGL-DR2 catalog identifier
14- 18 F5.3 --- z [0.21/4.32] Spectroscopic redshift
20- 25 F6.3 [10-7W] logL1350 [43.89/47.72] log 1350Å continuum
luminosity (1)
27- 31 F5.3 [10-7W] e_logL1350 [0/0.14] Uncertainty in logL1350 (1)
33- 37 I5 km/s FWHM [1204/13253] Full-Width at Half-Maximum
of CIV
39- 42 I4 km/s e_FWHM [43/6544] Uncertainty in FWHM
44- 49 F6.3 [10-7W] logLCIV [42.63/45.48] log CIV luminosity (1)
51- 55 F5.3 [10-7W] e_logLCIV [0.004/0.31] Uncertainty in logLCIV (1)
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Note (1): In units of erg/s.
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Byte-by-byte Description of file: table6.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 12 A12 --- 4FGL 4FGL-DR2 catalog identifier
14- 18 F5.3 --- z [0.024/0.85] Spectroscopic redshift
20- 25 F6.2 km/s sigma [123/586] Stellar velocity dispersion
27- 32 F6.2 km/s e_sigma [1.3/113] Uncertainty in sigma
34- 38 F5.2 [10-7W] logLUp [0/42.65] Upper 3σ limit in
log line luminosity in erg/s (1)
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Note (1): For the Hβ line except for sources 4FGL J0006.4+0135,
4FGL J0204.0-3334, and 4FGL J1146.0-0638, for which we quote
the MgII line luminosity upper limit.
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Byte-by-byte Description of file: table[78].dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 12 A12 --- 4FGL 4FGL-DR2 catalog identifier
14- 18 F5.2 [Msun] logMBH [6.3/10.2] log central black hole mass
20- 23 F4.2 [Msun] e_logMBH [0/0.9] Uncertainty in log MBH
25- 29 F5.2 [10-7W] logLd [0/47.5] log accretion disk luminosity
in erg/s units
31- 34 F4.2 [10-7W] e_logLd [0/0.5]? Uncertainty in logLd
(only for Table 7)
36- 40 F5.2 [Hz] lognuSyn [11.3/19.4] log synchrotron peak frequency
42- 47 F6.2 [mW/m2] lognuFSyn [-13/-9.7] log synchrotron peak flux
in erg/s/cm2 units
49- 53 F5.2 [Hz] lognuIC [19.6/26] log inverse Compton peak frequency
55- 60 F6.2 [mW/m2] lognuFIC [-13.3/-9.3] log inverse Compton peak flux
in erg/s/cm2 units
62- 67 F6.2 --- CD [0.04/118] Compton Dominance
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Byte-by-byte Description of file: table10.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 12 A12 --- 4FGL 4FGL-DR2 catalog identifier
15- 40 A26 --- Auth First author's name of the reference
49- 67 A19 --- BibCode Bibcode of the reference
69- 91 A23 --- Comm VizieR catalog reference; column added by CDS
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 29-Jun-2021