J/ApJS/261/7 BASS. XXVIII. NIR DR2 sp. of nearby Swift AGNs (den Brok+, 2022)
BASS.
XXVIII. Near-infrared Data Release 2: high-ionization and broad lines in
active galactic nuclei.
den Brok J.S., Koss M.J., Trakhtenbrot B., Stern D., Cantalupo S.,
Lamperti I., Ricci F., Ricci C., Oh K., Bauer F.E., Riffel R.,
Rodriguez-Ardila A., Bar R., Harrison F., Ichikawa K., Mejia-Restrepo J.E.,
Mushotzky R., Powell M.C., Boissay-Malaquin R., Stalevski M., Treister E.,
Urry C.M., Veilleux S.
<Astrophys. J. Suppl. Ser., 261, 7 (2022)>
=2022ApJS..261....7D 2022ApJS..261....7D
ADC_Keywords: Active gal. nuclei; Spectra, infrared; Surveys; Galaxies, Seyfert;
Redshifts
Keywords: Active galactic nuclei
Abstract:
We present the BAT AGN Spectroscopic Survey (BASS) Near-infrared Data
Release 2 (DR2), a study of 168 nearby ({bar}z=0.04, z<0.6) active
galactic nuclei (AGN) from the all-sky Swift Burst Array Telescope
X-ray survey observed with the Very Large Telescope (VLT)/X-shooter in
the near-infrared (NIR; 0.8-2.4µm). We find that 49/109 (45%)
Seyfert 2 and 35/58 (60%) Seyfert 1 galaxies observed with
VLT/X-shooter show at least one NIR high-ionization coronal line (CL;
ionization potential χ>100eV). Comparing the emission of the
[SiVI]λ1.9640 CL with the X-ray emission for the DR2 AGN, we
find a significantly tighter correlation, with a lower scatter
(0.37dex) than that for the optical [OIII]λ5007 line (0.71dex).
We do not find any correlation between CL emission and the X-ray
photon index Γ. We find a clear trend of line blueshifts with
increasing ionization potential in several CLs, such as
[SiVI]λ1.9640, [SiX]λ1.4300, [SVIII]λ0.9915, and
[SIX]λ1.2520, indicating the radial structure of the CL region.
Finally, we find a strong underestimation bias in black hole mass
measurements of Sy 1.9 using broad Hα due to the presence of
significant dust obscuration. In contrast, the broad Paα and
Paβ emission lines are in agreement with the M-σ relation.
Based on the combined DR1 and DR2 X-shooter sample, the NIR BASS
sample now comprises 266 AGN with rest-frame NIR spectroscopic
observations, the largest set assembled to date.
Description:
Our final sample, from the VLT/X-shooter observations and archival
observations of BAT AGNs, totals 168 unbeamed AGN (Table A1), of which
110/168 (66%) are Seyfert 2, 28/168 (17%) are Seyfert 1.9, and 30/168
(18%) are Seyfert 1-1.8 type AGN with broad Hβ. A summary and
information on the individual observations can be found in Table A1
(see Appendix A).
File Summary:
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FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
tablea1.dat 104 168 Summary of observations used in this work
tablec1.dat 89 7682 Flux measurements for all lines
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See also:
J/A+AS/135/437 : AGNs with composite spectra. II. (Goncalves+ 1999)
J/ApJ/640/579 : Near-infrared spectra of 27 SDSS quasars (Glikman+, 2006)
J/A+A/474/473 : XMM-LSS survey: AGN classifications (Garcet+, 2007)
J/A+A/512/A34 : XMM-COSMOS Type 1 AGNs (Lusso+, 2010)
J/ApJ/739/57 : Ultra hard X-ray AGNs in the Swift/BAT survey (Koss+, 2011)
J/ApJ/746/L22 : Dual AGNs in the nearby Universe (Koss+, 2012)
J/ApJ/812/66 : NIR spectra of 5 red quasars at 0.5<z<0.9 (Kim+, 2015)
J/ApJS/219/1 : Catalog of Type-1 AGNs from SDSS-DR7 (Oh+, 2015)
J/ApJ/815/L13 : Compton-thick AGNs from the 70mth Swift/BAT (Ricci+, 2015)
J/ApJ/831/7 : SDSS-RM project: peak velocities of QSOs (Shen+, 2016)
J/ApJ/835/74 : IR photometry of AGNs in Swift/BAT 70mth (Ichikawa+, 2017)
J/ApJ/850/74 : Swift/BAT AGN Spectroscopic Survey. I. (Koss+, 2017)
J/ApJS/233/17 : Swift/BAT AGN spectroscopic survey. V. X-ray (Ricci+, 2017)
J/ApJS/235/4 : The 105-month Swift-BAT all-sky hard X-ray survey (Oh+, 2018)
J/ApJ/870/31 : BAT AGN spectroscopic survey. XI. IR phot. (Ichikawa+, 2019)
J/ApJ/881/154 : BAT AGN spectroscopic survey. XVI. Blazars (Paliya+, 2019)
J/A+A/634/A133 : X-Shooter Spectral Library (XSL). DR2 (Gonneau+, 2020)
J/ApJS/252/29 : BAT AGN Spectroscopic Survey. XX. Molecular gas (Koss+, 2021)
J/ApJS/261/2 : BASS. XXII. Swift/BAT AGN Sp. Survey DR2 cat. (Koss+, 2022)
J/ApJS/261/6 : BASS. XXV. DR2 stellar velocity dispersions (Koss+, 2022)
http://www.bass-survey.com/ : The BAT AGN Spectroscopic Survey home page
http://swift.gsfc.nasa.gov/results/bs105mon/ : Swift BAT 105-month survey
Byte-by-byte Description of file: tablea1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 I4 --- ID [10/1630] BASS DR2 identifier (G1)
6- 35 A30 --- Name Counterpart identifier
37- 41 F5.3 --- z [0.002/0.6] Spectroscopic redshift
43- 44 I2 d Obs.D Day of the observation
46- 47 I2 "month" Obs.M Month of the observation
49- 52 I4 yr Obs.Y [2010/2019] Year of the observation
54- 57 I4 s Exp [80/3600] Exposure time
59- 62 F4.2 --- Airmass [1.01/2.59] Airmass
64- 68 F5.2 arcsec Seeing [0.48/4.23]?=-1 Seeing
70- 73 I4 --- R [5400] Resolution
75- 88 A14 --- Pro Program identifier (1)
90- 93 F4.2 kpc PSlitW [0.03/8.53] Physical slit width on source (2)
95- 99 F5.2 kpc PSlitL [0.13/37.91] Physical slit length on source (2)
101-104 A4 --- Cover Coverage code (3)
--------------------------------------------------------------------------------
Note (1): The IDs 098.A-0635,0 99.A-0403, 0101.A-0765, 0102.A-0433,
and 0103.A-0521 are BASS project observation runs.
Note (2): The slit dimensions are a width of 0.9arcsec and a 4arcsec length.
Note (3): Full coverage goes from 0.994-2.479um.
The limited coverage ranges from 0.994-2.101um.
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Byte-by-byte Description of file: tablec1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 I4 --- ID [10/1630] BASS DR2 identifier (G1)
6- 21 A16 --- Line Name of the emission line
23- 28 F6.4 um lambda [0.94/1.97] Wavelength position of Line (1)
30- 38 E9.2 mW/m2 Flux [-4.4e-13/6.6e-13]? Flux of Line;
erg/s/cm2 (2)
39 A1 --- n_Flux Flag on Flux (3)
40- 48 E9.2 km/s FWHM [61/7320]? Full-Width at Half-Maximum
49 A1 --- n_FWHM Flag on FWHM (3)
50- 58 E9.2 --- S/N [0.005/93.5]? Signal-to-Noise based
on line amplitude
59 A1 --- n_S/N Flag on S/N (3)
60- 68 E9.2 um e_lambda [1e-16/0.0015]? Uncertainty in lambda
69 A1 --- nelambda Flag on e_lambda (3)
70- 78 E9.2 mW/m2 e_Flux [6.3e-18/9.42e-14]? Uncertainty in Flux
79 A1 --- neFlux Flag on e_Flux (3)
80- 88 E9.2 km/s e_FWHM [5.6e-14/2080]? Uncertainty FWHM
89 A1 --- neFWHM Flag on e_FWHM (3)
--------------------------------------------------------------------------------
Note (1): The position corresponds to the expected restframe wavelength
in the case of a non-detection.
Note (2): Negative values indicate 2σ upper limits.
Note (3): Flag as follows:
n = no value (due to a non-detection).
o = no data because the line is is not within the spectral coverage.
--------------------------------------------------------------------------------
Global notes:
Note (G1): Identification number from the Swift/BAT 105-month hard X-ray survey
(Oh+, 2018, J/ApJS/235/4)
History:
From electronic version of the journal
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(End) Prepared by [AAS], Emmanuelle Perret [CDS] 05-Sep-2022