J/AJ/155/31 2005-2012 BVRI observations of blazar S5 0716+714 (Hong+, 2018)
Optical quasi-periodic oscillation of the BL Lacertae object S5 0716+714 during
the faint state.
Hong S., Xiong D., Bai J.
<Astron. J., 155, 31 (2018)>
=2018AJ....155...31H 2018AJ....155...31H (SIMBAD/NED BibCode)
ADC_Keywords: BL Lac objects ; Photometry, UBVRI
Keywords: BL Lacertae objects: individual (S5 0716+714) - galaxies: active -
galaxies: photometry
Abstract:
In order to search for the evidence of quasi-periodic oscillation (QPO)
in blazars, multicolor optical observations of the BL Lacertae object
S5 0716+714 were performed from 2005 to 2012. For I band observations
on 2010 March 19 with low variability amplitude and low flux level,
the same QPO∼50 minutes at the 99% significance level is confirmed by
the ZDCF method, Lomb-Scargle method, REDFIT, and fitting sinusoidal
curves. The observed QPO is likely to be explained by accretion disk
variability. If the observed QPO indicates an innermost stable orbital
period from the accretion disk, the QPO∼50 minutes corresponds to a black
hole mass of 5.03x106 M☉ for a non-rotating Schwarzschild black
hole and 3.2x107 M☉ for a maximally rotating Kerr black hole.
Description:
In order to explore mechanism of variability, we monitored many radio
loud AGNs using the 2.4 m, 1.02 m, and 60 cm optical telescopes located
at the Yunnan Astronomical Observatories of Chinese Academy of Sciences
of China from 2005 to 2012 (e.g., Liao et al. 2014, J/ApJ/783/83;
Xiong et al. 2016, J/ApJS/222/24, 2017, J/ApJS/229/21; Guo et al.
2017RAA....17...82G 2017RAA....17...82G; Hong et al. 2017, J/AJ/154/42; Wang et al.
2017RAA....17...68W 2017RAA....17...68W). The S5 0716+714 is one of them. Currently, some
radio loud AGNs are still observed. The standard Johnson UBV and
Cousins RI filters were equipped for the three telescopes. In this work,
S5 0716+714 is observed with the 2.4 and 1.02 m telescopes.
Objects:
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RA (ICRS) DE Designation(s)
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07 21 53.45 +71 20 36.4 S5 0716+714 = 7C 071610.69+712601.00
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 36 516 The Magnitude of S5 0716+714 (B Filter)
table3.dat 36 704 The Magnitude of S5 0716+714 (V Filter)
table4.dat 36 995 The Magnitude of S5 0716+714 (R Filter)
table5.dat 36 1118 The Magnitude of S5 0716+714 (I Filter)
table6.dat 47 72 Statistic Results for Intra-Day Variability (IDV)
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See also:
J/A+A/327/61 : BV(RI)c photometry of S5 0716+714 (Ghisellini+ 1997)
J/A+A/402/151 : S5 0716+714 UBVRI photometry (Raiteri+, 2003)
J/AJ/129/1818 : Photometry of S5 0716+714 (Wu+, 2005)
J/A+A/451/435 : BV(RI)c photometry of S5 0716+714 (Montagni+, 2006)
J/AZh/83/310 : BV(RI)c photometry of S5 0716+714 (Amirkhanyan+, 2006)
J/AJ/133/1599 : B'V'R' photometry of S5 0716+714 (Wu+, 2007)
J/AJ/135/1384 : R-band variability in 5 blazars (Gupta+, 2008)
J/AJ/136/1846 : BVRI light curves of S5 0716+714 (Zhang+, 2008)
J/ApJS/185/511 : Optical microvariability of S5 0716+714 (Poon+, 2009)
J/ApJ/731/118 : R-band variability in blazar S5 0716+71 (Chandra+, 2011)
J/AJ/143/108 : B'V'R' photometry of the BL Lac object S5 0716+714 (Wu+, 2012)
J/A+A/558/A92 : S5 0716+714 microvariability observation (Bhatta+, 2013)
J/ApJ/783/83 : BVRI photometry of S5 0716+714 (Liao+, 2014)
J/ApJS/218/18 : 2004-2012 BVRI observations of blazar S5 0716+714 (Dai+, 2015)
J/ApJS/222/24 : VRI LCs of BL Lac object Mrk 501 from 2010 to 2015
(Xiong+, 2016)
J/A+A/601/A12 : S5 0716+714 VLBI K- and Q-band variability (Lee+, 2017)
J/AJ/154/42 : BVRI photometry of S5 0716+714 in 2012 (Hong+, 2017)
J/ApJS/229/21 : VRI monitoring of the QSO 3C 273 in 2005-2016 (Xiong+, 2017)
J/PAZh/43/407 : S5 0716+714 polarization + brightness 1991-2004
(Doroshenko+ 2017)
Byte-by-byte Description of file: table[2345].dat
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Bytes Format Units Label Explanations
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1- 11 A11 "date" Date Date of the observation
13- 21 F9.3 d MJD Modified Julian Date of the observation
23 A1 --- Filt [BVRI] Filter used for the observation
25- 30 F6.3 mag mag [11.851/15.111] Apparent magnitude in Filt
32- 36 F5.3 mag e_mag [0.001/0.124] Uncertainty in mag
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Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
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1- 10 A10 "date" Date Date of the observation
12 A1 --- Filt [BVRI] Filter used for the observation
14- 16 I3 --- N [15/160] Number of data points
18- 22 F5.2 --- Fmean [0.45/18.06] The average F-value (1)
24- 27 F4.2 --- Fc(99) [1.45/3.7] The critical F-value at the 99%
confidence level (1)
29- 33 F5.2 --- FA [0.17/72.62] The F-value of one-way ANalysis Of
VAriance (ANOVA) (1)
35- 39 F5.2 --- FA(99) [1.84/10.87] The critical F-value of ANOVA at
the 99% confidence level (bin=5) (1)
41- 42 A2 --- Var Variability status (2)
44- 47 F4.2 % Vamp [1.55/6.36]? Variability amplitude
(Heidt & Wagner 1996A&A...305...42H 1996A&A...305...42H)
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Note (1): We have employed two statistical analysis techniques (F-test and the
one-way analysis of variance: ANOVA) to quantify the intra-day variability
(IDV)/microvariation of the BL Lac object (e.g., de Diego 2010AJ....139.1269D 2010AJ....139.1269D;
Goyal et al. 2012A&A...544A..37G 2012A&A...544A..37G; Hu et al. 2014MNRAS.443.2940H 2014MNRAS.443.2940H;
Agarwal & Gupta 2015MNRAS.450..541A 2015MNRAS.450..541A; Dai et al. 2015, J/ApJS/218/18;
Xiong et al. 2016, J/ApJS/222/24, 2017, J/ApJS/229/21; Hong et al. 2017,
J/AJ/154/42). The specific formulas and variability criterion for the two
statistical techniques are seen in these references.
Note (2): Variability status as follows:
V = Variable;
N = Non-variable;
PV = Probable variable.
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History:
From electronic version of the journal
(End) Prepared by [AAS], Tiphaine Pouvreau [CDS] 14-Sep-2018