J/ApJS/269/15 Survey of bare z<0.2 AGNs. I. X-ray soft excess (Nandi+, 2023)
Survey of bare active galactic nuclei in the local Universe (z<0.2).
I. On the origin of soft excess.
Nandi P., Chatterjee A., Jana A., Chakrabarti S.K., Naik S., Safi-Harb S.,
Chang H.-K., Heyl J.
<Astrophys. J. Suppl. Ser., 269, 15 (2023)>
=2023ApJS..269...15N 2023ApJS..269...15N
ADC_Keywords: Active gal. nuclei; X-ray sources; Galaxies, Seyfert; Black holes
Keywords: Seyfert galaxies ; X-ray active galactic nuclei ;
Black hole physics ; Accretion
Abstract:
We analyze a sample of 21 "bare" Seyfert 1 active galactic nuclei, a
subclass of Seyfert 1 galaxies, with intrinsic absorption
NH∼1020cm-2, in the local Universe (z<0.2) using XMM-Newton and
Swift/XRT observations. The luminosities of the primary continuum, the
X-ray emission in the 3-10keV energy range, and the soft excess --the
excess emission that appears above the low-energy extrapolation of the
power-law fit of 3-10keV X-ray spectra-- are calculated. Our spectral
analysis reveals that the long-term intrinsic luminosities of the soft
excess and the primary continuum are tightly correlated
(LPC∝LSE1.1±0.04). We also found that the luminosities
are correlated for each source. This result suggests that both the
primary continuum and soft excess emissions exhibit a dependency on
the accretion rate in a similar way.
Description:
We employed publicly available archival data from the XMM-Newton and
Swift observatories using HEASARC.
We included the observations from XMM-Newton in the X-ray range of
0.2-10keV obtained with the EPIC-pn detector.
The sample data from Swift/XRT were obtained between 2005 January and
2021 December.
The details of the observation log are provided in Table 4.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 66 21 Information on the sample
table3.dat 78 22 Correlations between primary continuum and
soft excess for different sources
table4.dat 98 195 Observational log for each source
table5.dat 111 269 X-ray (0.5 to 10.0keV) spectral fit parameters
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See also:
B/swift : Swift Master Catalog (HEASARC, 2004-)
B/xmm : XMM-Newton Obs. Log (XMM-Newton Science Operation Center, 2012)
VIII/76 : Leiden/Argentine/Bonn (LAB) Survey of Galactic HI (Kalberla+ 2005)
J/ApJ/613/682 : AGN masses & broad-line region sizes (Peterson+, 2004)
J/ApJ/618/L83 : Narrow iron Kα lines in AGN (Zhou+, 2005)
J/MNRAS/397/1177 : Swift-XRT observations of GRBs (Evans+, 2009)
J/ApJ/755/60 : Reverberation mapping for 5 Sy1 galaxies (Grier+, 2012)
J/MNRAS/448/2879 : Spectropolarim. of active galaxy 3C 390.3 (Afanasiev+, 2015)
J/MNRAS/448/1541 : Spectral parameters for Mrk 335 and Ark 564 (Sarma+, 2015)
J/A+A/588/A70 : Hard X-ray view of the soft excess in AGN (Boissay+, 2016)
J/ApJ/840/97 : Opt. reverberation mapping of 5 AGNs (Fausnaugh+, 2017)
J/MNRAS/486/4917 : Torus properties of 24 X-ray gal. (Garcia-Bernete+, 2019)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 18 A18 --- Name Source Name from NED
20- 21 I2 h RAh NED Hour of Right Ascension (J2000)
23- 24 I2 min RAm Minute of Right Ascension (J2000)
26- 29 F4.1 s RAs Second of Right Ascension (J2000)
31 A1 --- DE- NED Sign of the Declination (J2000)
32- 33 I2 deg DEd NED Degree of Declination (J2000)
35- 36 I2 arcmin DEm Arcminute of Declination (J2000)
38- 39 I2 arcsec DEs Arcsecond of Declination (J2000)
41- 46 F6.4 --- z [0.0065/0.2] NED redshift
48- 52 F5.2 [10+20cm-2] NHGal [1.26/19.6] Galactic hydrogen column
densities (1)
54- 57 F4.2 [Msun] logMBH [5.85/9.3] Log of black hole mass
59- 60 I2 --- r_logMBH [1/18] Reference for logMBH (2)
62- 66 F5.2 [10-7W] logLedd [43.95/47.4] Log of Eddington
luminosity, in erg/s
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Note (1): Galactic hydrogen column densities (NH) are collected from
Kalberla+ (2005, VIII/76) and used as constant values for TBabs
during the spectral fitting.
Note (2): References for the black hole mass as follows:
1 = Landt et al. 2017MNRAS.464.2565L 2017MNRAS.464.2565L
2 = O'Neill et al. 2005MNRAS.358.1405O 2005MNRAS.358.1405O
3 = Zhou & Wang 2005, J/ApJ/618/L83
4 = Fausnaugh et al. 2017, J/ApJ/840/97
5 = Sergeev et al. 2011MNRAS.410.1877S 2011MNRAS.410.1877S
6 = Peterson et al. 2004, J/ApJ/613/682
7 = Zhang & Wang 2006ApJ...653..137Z 2006ApJ...653..137Z
8 = Alston et al. 2019MNRAS.482.2088A 2019MNRAS.482.2088A
9 = Ezhikode et al. 2017MNRAS.472.3492E 2017MNRAS.472.3492E
10 = Liu et al. 2017MNRAS.466.3323L 2017MNRAS.466.3323L
11 = Grier et al. 2012, J/ApJ/755/60
12 = Middei et al. 2020A&A...640A..99M 2020A&A...640A..99M
13 = Ross et al. 1992MNRAS.258..189R 1992MNRAS.258..189R
14 = Nardini et al. 2015Sci...347..860N 2015Sci...347..860N
15 = Gliozzi et al. 2010ApJ...717.1243G 2010ApJ...717.1243G
16 = Agis-Gonzalez et al. 2014MNRAS.443.2862A 2014MNRAS.443.2862A
17 = Turner et al. 2002ApJ...568..120T 2002ApJ...568..120T
18 = Bentz et al. 2016ApJ...831....2B 2016ApJ...831....2B
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 18 A18 --- Name Source Name from NED (1)
20- 23 F4.2 --- rho [0.5/0.95] Pearson Correlation parameter, ρ
25 A1 --- l_rho Limit flag for prob-rho
27- 31 F5.3 --- prob-rho [0.001/0.1] Pearson Correlation probability
33- 36 F4.2 --- R [0.4/0.9] Spearmann Correlation parameter
38 A1 --- l_prob-R Limit flag for prob-R
40- 44 F5.3 --- prob-R [0.001/0.2] Spearmann Correlation probability
46- 49 F4.2 --- tau [0.3/0.8] Kendall Correlation parameter, τ
51 A1 --- l_prob-tau Limit flag for prob-tau
53- 57 F5.3 --- prob-tau [0.001/0.22] Kendall Correlation probability
59- 62 F4.2 --- m [0.49/5] Linear fit, y=mx+c, parameter m
64- 67 F4.2 --- e_m [0.04/2] Uncertainty in m
69- 73 F5.2 --- c [-1.6/8.2] Linear fit, y=mx+c, parameter c
75- 78 F4.2 --- e_c [0.01/5] Uncertainty in c
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Note (1): The last row is the overall fit statistics.
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 18 A18 --- Name Source Name from NED
20- 29 I10 --- XMM ? XMM-Newton Observation Identifier
31- 40 A10 "Y/M/D" XMMdate XMM-Newton Observation date (UT) if any
42- 46 F5.1 ks XMMExp [10.1/141.4]? XMM-Newton exposure time
48- 58 A11 --- Swift01 ? Swift/XRT (start) observation ID
60- 70 A11 --- Swift02 ? Swift/XRT (end) observation ID
72- 81 A10 "Y/M/D" Swift01date Swift/XRT (start) Observation date (UT)
83- 92 A10 "Y/M/D" Swift02date Swift/XRT (end) Observation date (UT)
94- 98 F5.1 ks SwiftExp [1.1/232.7]? Swift/XRT total exposure time
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 18 A18 --- Name Source Name from NED
20- 29 A10 --- Inst Instrument used
("XMM-Newton": 150 occurrences, or
"Swift/XRT": 119 occurrences)
31- 35 I5 d MJD [51586/59466] Modified Julian Date of
observation (JD-2400000.5)
37- 40 F4.2 10+20cm2 NH [0.08/6] Column density along the line of
sight
42- 45 F4.2 10+20cm2 e_NH [0.05/2] Uncertainty in NH
47- 50 F4.2 --- GammaPC [1/2.8] Spectral slope, primary continuum,
Γ
52- 55 F4.2 --- e_GammaPC [0.01/1] Uncertainty in GammaPC
57- 61 F5.2 10-3 NormPC [0.03/40.6] Normalization, primary continuum
63- 66 F4.2 10-3 e_NormPC [0.01/7] Uncertainty in NormPC
68- 72 F5.2 [10-7W] logLPC [41.42/45.28] Log, intrinsic luminosity,
primary continuum
74- 78 F5.3 [10-7W] e_logLPC [0.001/0.3] Uncertainty in logLPC
80- 83 F4.2 --- GammaSE [1.54/7.34] Spectral slope, soft excess,
Γ
85- 88 F4.2 --- e_GammaSE [0.01/0.6] Uncertainty in GammaSE
90- 94 F5.2 10-3 NormSE [0.13/16.6] Normalization, soft excess
96- 99 F4.2 10-3 e_NormSE [0.03/5] Uncertainty in NormSE
101- 105 F5.2 [10-7W] logLSE [38.74/46.33] Log, intrinsic luminosity,
soft excess
107- 111 F5.3 [10-7W] e_logLSE [0.001/0.1] Uncertainty in logLSE
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 26-Jan-2024