J/A+A/646/A165 SDSS J1339+1310 light curves and spectra (Shalyapin+, 2021)
Resolving the inner accretion flow towards the central supermassive black hole
in SDSS J1339+1310.
Shalyapin V.N., Goicoechea L.J., Morgan C.W., Cornachione M.A.,
Sergeyev A.V.
<Astron. Astrophys. 646, A165 (2021)>
=2021A&A...646A.165S 2021A&A...646A.165S (SIMBAD/NED BibCode)
ADC_Keywords: Gravitational lensing ; Photometry, CCD ; Spectrophotometry
Keywords: accretion, accretion discs - gravitational lensing: micro -
gravitational lensing: strong - quasars: individual: SDSS J1339+1310 -
quasars: supermassive black holes
Abstract:
We studied the accretion disc structure in the doubly imaged lensed
quasar SDSS J1339+1310 using r-band light curves and UV-visible to
near-IR spectra from the first 11 observational seasons after its
discovery. The 2009-2019 light curves displayed pronounced
microlensing variations on different timescales, and this microlensing
signal permitted us to constrain the half-light radius of the 1930Å
continuum-emitting region. Assuming an accretion disc with an axis
inclined at 60° to the line of sight, we obtained
log(r1/2/cm)=15.4_-0.4+^+0.93%. We also estimated the central black
hole mass from spectroscopic data. The width of the CIV, MgII, and
Hβ emission lines, and the continuum luminosity at 1350, 3000,
and 5100Å, led to log(MBH/M☉)=8.6±0.4. Thus, hot gas
responsible for the 1930Å continuum emission is likely orbiting a
4.0x108M☉ black hole at an r1/2 of only a few tens of
Schwarzschild radii.
Description:
We present new light curves and spectra of the lens system SDSS
J1339+1310 (Inada et al., 2009AJ....137.4118I 2009AJ....137.4118I). Table 1 contains
updated brightness records of the two images of the gravitationally
lensed quasar (A and B) covering the period from 2009 to 2019.
Although most photometric data are based on observations with the 2.0m
Liverpool Telescope and Sloan r filters (in 213 out of 241 epochs),
the optical variability database also relies on red imaging from the
Panoramic Survey Telescope and Rapid Response System project
(Flewelling et al., 2020ApJS..251....7F 2020ApJS..251....7F), the 1.5m Maidanak Telescope
and the 1.3m SMARTS Telescope. In addition, SDSS J1339+1310 was
spectroscopically observed with the 2.4m Hubble Space Telescope on 18
February 2016 (Lusso et al., 2018ApJ...860...41L 2018ApJ...860...41L, Cat. J/ApJ/860/41).
These observations were made using the G280 grism in the UVIS channel
of the WFC3 instrument, and we extracted the UV-visible spectra of A
(Table 3a) and B (Table 3b) at such observing epoch. Observations with
the XSHOOTER spectrograph on the 8.2m Very Large Telescope on 6 April
2017 (programme 099.A-0018, PI: M. Fumagalli) were also used to
extract the UV-visible-NIR spectra of both quasar images and the main
lensing galaxy G (Table 4).
Objects:
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RA (2000) DE Designation(s)
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13 39 07.14 +13 10 39.7 SDSS J1339+1310 = [IOS2009] SDSS J1339+1310
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 34 241 *Light curves in the r band (623.7nm)
table3a.dat 21 286 *HST-WFC3-UVIS spectrum of A (200.2-599.4nm)
table3b.dat 21 286 *HST-WFC3-UVIS spectrum of B (200.2-599.6nm)
table4.dat 63 53764 *VLT-XSHOOTER spectra of ABG (305.0-2101.8nm)
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Note on table1.dat: table1 is an extended version of J/A+A/596/A77/table3 in
Goicoechea & Shalyapin (2016A&A...596A..77G 2016A&A...596A..77G)
Note on table3a.dat, table3b.dat, table4.dat: table3a, table3b and table4
complement previous optical spectra of ABG from observations with the 10.4m
Gran Telescopio Canarias in 2014 (see J/A+A/596/A77/table1 and
J/A+A/596/A77/table2 in Goicoechea & Shalyapin, 2016A&A...596A..77G 2016A&A...596A..77G)
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See also:
J/A+A/596/A77 : SDSS J1339+1310 spectra and light curves (Goicoechea+, 2016)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 8 F8.3 d MJD Modified Julian Date (MJD-50000)
10- 15 F6.3 mag rmagA r magnitude of SDSS J1339+1310A
17- 21 F5.3 mag e_rmagA Error in r magnitude of SDSS J1339+1310A
23- 28 F6.3 mag rmagB r magnitude of SDSS J1339+1310B
30- 34 F5.3 mag e_rmagB Error in r magnitude of SDSS J1339+1310B
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Byte-by-byte Description of file: table3a.dat
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Bytes Format Units Label Explanations
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1- 8 F8.3 0.1nm lambda Observed wavelength in Angstroms
10- 15 F6.3 0.1nW/m3 FA Flux of SDSS J1339+1310A
17- 21 F5.3 0.1nW/m3 e_FA Error in flux of SDSS J1339+1310A
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Byte-by-byte Description of file: table3b.dat
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Bytes Format Units Label Explanations
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1- 8 F8.3 0.1nm lambda Observed wavelength in Angstroms
10- 15 F6.3 0.1nW/m3 FB Flux of SDSS J1339+1310B
17- 21 F5.3 0.1nW/m3 e_FB Error in flux of SDSS J1339+1310B
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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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2- 8 F7.1 0.1nm lambda Observed wavelength in Angstroms
11- 17 F7.3 0.1nW/m3 FA ?=- Flux of SDSS J1339+1310A
19- 26 F8.3 0.1nW/m3 e_FA ?=- Error in flux of SDSS J1339+1310A
28- 36 F9.3 0.1nW/m3 FB ?=- Flux of SDSS J1339+1310B
38- 45 F8.3 0.1nW/m3 e_FB ?=- Error in flux of SDSS J1339+1310B
48- 54 F7.3 0.1nW/m3 FG ?=- Flux of SDSS J1339+1310G
57- 63 F7.3 0.1nW/m3 e_FG ?=- Error in flux of SDSS J1339+1310G
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Acknowledgements:
Luis J. Goicoechea, goicol(at)unican.es
(End) L. Goicoechea [Univ. Cantabria, Spain], P. Vannier [CDS] 06-Jan-2021