J/ApJ/871/108 Lick AGN monitoring project 2011: V band (Pancoast+, 2019)
The lick AGN monitoring project 2011: photometric light curves.
Pancoast A., Skielboe A., Pei L., Bennert V.N., Sand D.J., Barth A.J.,
Joner M.D., Thorman S., Schmidt T., Treu T., Brewer B.J., Li W., Buehler T.,
Laney C.D., Canalizo G., Filippenko A.V., Greene J.E., Malkan M.A.,
Stern D., Woo J.-H.
<Astrophys. J., 871, 108 (2019)>
=2019ApJ...871..108P 2019ApJ...871..108P
ADC_Keywords: Active gal. nuclei; Galaxies, Seyfert; Photometry, UBV
Keywords: galaxies: active ; galaxies: nuclei ; galaxies: Seyfert
Abstract:
In Spring 2011, the Lick AGN Monitoring Project observed a sample of
15 bright, nearby Seyfert 1 galaxies in the V band as part of a
reverberation mapping campaign. The observations were taken at six
ground-based telescopes, including the West Mountain Observatory 0.91m
telescope, the 0.76m Katzman Automatic Imaging Telescope, 0.6m
Super-LOTIS (Livermore Optical Transient Imaging System) at Kitt Peak,
the Palomar 60inch telescope, and the 2m Faulkes telescopes North and
South. The V-band light curves measure the continuum variability of
our sample of Seyferts on an almost daily cadence for 2-3 months. We
use image-subtraction software to isolate the variability of the
Seyfert nucleus from the constant V-band flux of the host galaxy for
the most promising targets, and we adopt standard aperture photometry
techniques for the targets with smaller levels of variability. These
V-band light curves will be used, with measurements of the broad
emission line flux, to measure supermassive black hole masses and to
constrain the geometry and dynamics of the broad-line region through
dynamical modeling techniques.
Description:
The AGNs were monitored from early 2011 March through the middle of
2011 June. The exceptions were Mrk50, for which spectroscopy was taken
before the main observing campaign, and Mrk817 and Zw229-015, for
which Spitzer Space Telescope data were taken during and after the
campaign. Exposure times were generally 180-300s.
We obtained V-band images of our sample of AGNs using six telescopes:
The 0.91m telescope at West Mountain Observatory (WMO) uses a
3056x3056 pixel Finger Lakes PL-09000 CCD with a scale of 0.49"/pixel
and a field of view of 25.2'x25.2'.
The 2m Faulkes Telescope North (FTN) and Faulkes Telescope South (FTS)
are located respectively at Haleakala Observatory, Hawaii, and at
Siding Spring Observatory, Australia. For both telescopes we used the
4096x4096 pixel Spectral cameras with Fairchild CCD486 BI CCDs. The
scale of the Spectral cameras is 0.304"/pixel, providing a field of
view of 10.5'x10.5'.
The 0.76m Katzman Automatic Imaging Telescope (KAIT) is a robotic
telescope at Lick Observatory. The telescope uses a 500x500 pixel
Apogee Instruments Peltier cooled CCD with a scale of 0.8"/pixel
giving a field of view of 6.7'x6.7'.
The 0.6m Super-LOTIS (Livermore Optical Transient Imaging System)
telescope is a robotic telescope at the Steward Observatory, Kitt
Peak. The telescope uses a 2048x2048 pixel Spectral Instruments 800
Series CCD Camera with a scale of 0.5"/pixel, giving a field of view
of 17'x17'.
The Palomar 60inch (P60) telescope is a robotic telescope at the
Palomar Observatory operated by the California Institute of
Technology. The telescope has a 2048x2048 pixel SITe CCD with a scale
of 0.378"/pixel, giving a field of view of 12.9'x12.9'.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 59 15 Details of the AGN sample
table3.dat 51 15 Light-curve statistics
table4.dat 46 727 Image subtraction photometry
table5.dat 46 541 Standard aperture photometry
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See also:
II/183 : UBVRI Photometric Standards (Landolt 1992)
II/294 : The SDSS Photometric Catalog, Release 7 (Adelman-McCarthy+, 2009)
J/ApJ/594/1 : High-z supernovae VRI mag and distances (Tonry+, 2003)
J/ApJ/613/682 : AGN central masses & broad-line region sizes (Peterson+, 2004)
J/other/Ap/48.304 : BVRI of comparison stars in AGN fields (Doroshenko+, 2005)
J/ApJ/698/895 : Variations in QSOs optical flux (Kelly+, 2009)
J/ApJS/185/156 : The Lick AGN monitoring project (Walsh+, 2009)
J/ApJ/716/993 : LAMP: reverberation mapping of H and He lines (Bentz+, 2010)
J/ApJ/732/121 : V-band and Hβ monitoring of Z299-15 (Barth+, 2011)
J/ApJ/795/38 : Photometry/spectro measurements for KA1858+4850 (Pei+, 2014)
J/ApJS/217/26 : Lick AGN monitoring 2011: light curves (Barth+, 2015)
J/A+A/587/A112 : Long term R and V band monitoring of AGN (Taris+, 2016)
J/A+A/596/A45 : Radio light curves of 8 AGN (Fuhrmann+, 2016)
J/ApJ/821/56 : Space telescope RM project. III. NGC 5548 (Fausnaugh+, 2016)
J/ApJ/854/107 : Light curves of 2 Seyfert 1 galaxies (Fausnaugh+, 2018)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 11 A11 --- Name AGN identifier
13 A1 --- n_Name Note on Name (1)
15- 16 I2 h RAh [9/19] Hour of right ascension (J2000)
18- 19 I2 min RAm Minute of right ascension (J2000)
21- 24 F4.1 s RAs Second of right ascension (J2000)
26 A1 --- DE- Sign of declination (J2000)
27- 28 I2 deg DEd Degree of declination (J2000)
30- 31 I2 arcmin DEm Arcminute of declination (J2000)
33- 34 I2 arcsec DEs Arcsecond of declination (J2000)
36- 41 F6.4 --- z [0.009/0.042] Redshift from the
NASA Extragalactic Database (NED)
43- 47 F5.3 mag Av [0.019/0.2] Galactic extinctions (AV) (2)
49- 59 A11 --- OName Alternative name
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Note (1): Note as follows:
i = Nine AGNs in the sample show significant Hβ variability, including
Mrk 40, Mrk 50, Mrk 279, Mrk 504, Mrk 704, Mrk 1511, NGC 4593,
PG1310-108, and Zw 229-015 (Barth+ 2015, J/ApJS/217/26). The
preprocessed data for these nine AGNs were analyzed using
image-subtraction software in order to isolate the variable AGN flux
from the constant flux of the host galaxy. The details of the
photometry and image-subtraction process are described in Section 4.
s = For the remaining six AGNs without image-subtraction photometry,
the data were flat-fielded before we performed standard aperture
photometry techniques as described in Section 4.4.
Note (2): Galactic extinctions are taken from NED values from
Schlafly & Finkbeiner (2011ApJ...737..103S 2011ApJ...737..103S) with RV=3.1.
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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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1-11 A11 --- Name AGN identifier
13-14 I2 s Expmin [60/90] Minimum exposure time
16-18 I3 s Expmax [200/300] Maximum exposure time
20-22 I3 --- N [49/170] Number of data points in the
final light curve
24-27 F4.2 d Tmed [0.61/1.3] Median time between observations
29-39 A11 "date" DateSt Starting UT date of the observation
41-51 A11 "date" DateEnd Ending UT date of the observation
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Byte-by-byte Description of file: table[45].dat
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Bytes Format Units Label Explanations
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1- 11 A11 --- Name AGN identifier
13- 21 F9.4 d HJD [5584/5788] Heliocentric Julian Date;
HJD-2450000
23- 28 F6.3 mag Vmag [13/17] V-band magnitude
30- 34 F5.3 mag e_Vmag [0.001/0.2] Uncertainty in Vmag
36- 46 A11 --- Tel Telescope used for datapoint (1)
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Note (1): Telescopes as follows:
WMO = 0.91m telescope, West Mountain Observatory, Utah, USA
(222+158 occurrences for image substraction+standard
aperture photometry, respectively)
Super-LOTIS = Super-LOTIS telescope, Steward Observatory, Kitt Peak,
Arizona, USA (135+245 occurrences)
LCO = Faulkes Telescope North, Haleakala Observatory, Hawaii, USA
and South, Siding Spring Observatory, Australia,
Las Cumbres Observatory global telescope network
(140+114 occurrences)
KAIT = 0.76m Katzman Automatic Imaging Telescope,
Lick Observatory, California, USA (180+24 occurrences)
P60 = 60-inch, Palomar Observatory, California, USA (50 occurrences
for image substraction photometry)
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History:
From electronic version of the journal
References:
Barth et al. 2011ApJ...743L...4B 2011ApJ...743L...4B
Pancoast et al. 2012ApJ...754...49P 2012ApJ...754...49P
Barth et al. 2013ApJ...769..128B 2013ApJ...769..128B
Barth et al. Companion Paper 2015ApJS..217...26B 2015ApJS..217...26B Cat. J/ApJS/217/26
Williams et al. 2018ApJ...866...75W 2018ApJ...866...75W
(End) Prepared by [AAS], Coralie Fix [CDS] 18-Feb-2020