J/ApJ/880/46 Spectroscopy & V-band monitoring of CTS C30.10 (Czerny+, 2019)
Time delay measurement of MgII Line in CTS C30.10 with SALT.
Czerny B., Olejak A., Ralowski M., Kozlowski S., Aldama M.L.M., Zajacek M.,
Pych W., Hryniewicz K., Pietrzynski G., Figaredo C.S., Haas M.,
Sredzinska J., Krupa M., Kurcz A., Udalski A., Gorski M., Karas V.,
Panda S., Sniegowska M., Naddaf M.-H., Bilicki M., Sarna M.
<Astrophys. J., 880, 46 (2019)>
=2019ApJ...880...46C 2019ApJ...880...46C
ADC_Keywords: QSOs; Spectra, optical; Photometry
Keywords: accretion, accretion disks ; galaxies: active ; galaxies: Seyfert ;
quasars: emission lines
Abstract:
We report 6yr monitoring of distant bright quasar CTS C30.10
(z=0.90052) with the Southern African Large Telescope. We measured the
rest-frame time lag of 562-68+116 days between the continuum
variations and the response of the MgII emission line, using six
different methods. This time delay, combined with other available
measurements of MgII line delay, mostly for lower-redshift sources,
shows that the MgII line reverberation implies a radius-luminosity
relation very similar to the one based on a more frequently studied
Hβ line.
Description:
Quasar CTS C30.10 has been found in the Calan-Tololo Survey. The
source has been observed with the Southern African Large Telescope
(SALT) from 2012 December 6 until 2018 December 10.
The source was observed in a slit spectroscopy mode, using the Robert
Stobie Spectrograph. We collected 26 observations listed in Table 1.
The spectroscopic observations were supplemented with the photometric
data from other instruments, whenever possible.
In the period of 2018 February 3--April 14 we also performed dense
photometric observations of CTS C30.10 with the use of the 1.3m SMART
telescope at the Cerro Tololo Inter-American Observatory.
See Section 2.3.
Objects:
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RA (ICRS) DE Designation(s)
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04 47 19.99 -45 37 38.3 CTS C30.10 = QSO B0445-4542
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 63 26 SALT spectroscopy
table2.dat 25 146 Photometric observations of CTS C30.10
performed with various instruments
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See also:
J/ApJ/613/682 : AGN central masses & broad-line region sizes (Peterson+, 2004)
J/ApJS/166/470 : SDSS-Spitzer type I QSOs IR photometry (Richards+, 2006)
J/ApJS/166/128 : Narrow line Seyfert 1 galaxies from SDSS-DR3 (Zhou+, 2006)
J/ApJ/698/895 : Variations in QSOs optical flux (Kelly+, 2009)
J/ApJS/194/45 : QSO properties from SDSS-DR7 (Shen+, 2011)
J/A+A/570/A53 : CTS C30.10 SALT long-slit spectra (Modzelewska+, 2014)
J/ApJ/825/126 : SEAMBHs. V. The third year (Du+, 2016)
J/ApJ/818/30 : Lag measurements for 15 z<0.8 QSOs from SDSS-RM (Shen+, 2016)
J/ApJ/851/21 : SDSS RM project first year of observations (Grier+, 2017)
J/A+A/601/A32 : 10 SALT spectra of HE 0435-4312 (Sredzinska+, 2017)
J/ApJ/843/30 : MgII line vs 3000Å continuum analysis in QSOs (Zhu+, 2017)
J/ApJ/856/6 : SEAMBHs IX. 10 new Hβ light curves (Du+, 2018)
J/ApJ/865/56 : Emission line & R-band continuum LCs of 17 QSOs (Lira+, 2018)
J/ApJ/870/123 : Swift optical & UV flux of four AGNs (Edelson+, 2019)
J/ApJ/876/49 : A 10yr reverberation mapping campaign for 3C273 (Zhang+, 2019)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Seq [1/26] Observation number
4- 12 F9.4 --- JD [6268.55/8463.55] Julian date of
the observation; JD-2450000
14- 18 F5.2 0.1nm EWMgII [22/34] MgII equivalent width;
in Å units
20- 23 F4.2 0.1nm E_EWMgII [0.3/2.7] Positive error on EWMgII
25- 28 F4.2 0.1nm e_EWMgII [0.3/2.4] Negative error on EWMgII
30- 34 F5.2 0.1nm EWFeII [3.9/14] FeII equivalent width
in Å units
36- 39 F4.2 0.1nm E_EWFeII [0.6/5.1] Positive error on EWFeII
41- 45 F5.3 0.1nm e_EWFeII [0.6/5] Negative error on EWFeII
47- 51 F5.3 10-16W/m2/nm FMgII [2.5/3.9] MgII flux;
in 10-14erg/s/cm2/Å
53- 57 F5.3 10-16W/m2/nm E_FMgII [0.03/0.2] Positive error on LMgII
59- 63 F5.3 10-16W/m2/nm e_FMgII [0.02/0.2] Negative error on LMgII
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 10 F10.5 d HJD [3597.75/8462.65] Heliocentric Julian Date
of observation start; HJD-2450000
12- 17 F6.3 mag Vmag [16.94/17.36] Apparent V band magnitude
19- 23 F5.3 mag e_Vmag [0.003/0.32] Uncertainty in Vmag
25 I1 --- r_Vmag [1/5] Reference code for Vmag (1)
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Note (1): Reference code as follows:
1 = CATALINA survey (54 occurrences);
2 = OGLE-IV photometry (with the 1.3m Warsaw telescope at
the Las Campanas Observatory, Chile; 50 occurrences)
3 = SALTICAM g-band SALT photometry (see Section 2.3; 14 occurrences);
4 = The 40cm Bohum Monitoring Telescope (BMT) located at
the Universitatssternwarte Bochum, near Cerro Armazones in Chile
(2017 December 2 - 2018 April 1; 17 occurrences);
5 = SMART (not included in time delay computations; 11 occurrences).
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 13-Jan-2021