J/ApJS/185/156 The Lick AGN monitoring project (Walsh+, 2009)
The Lick AGN Monitoring Project: photometric light curves and optical
variability characteristics.
Walsh J.L., Minezaki T., Bentz M.C., Barth A.J., Baliber N., Li W.,
Stern D., Bennert V.N., Brown T.M., Canalizo G., Filippenko A.V.,
Gates E.L., Greene J.E., Malkan M.A., Sakata Y., Street R.A., Treu T.,
Woo J.-H., Yoshii Y.
<Astrophys. J. Suppl. Ser., 185, 156-170 (2009)>
=2009ApJS..185..156W 2009ApJS..185..156W
ADC_Keywords: Active gal. nuclei ; Photometry, UBV
Keywords: galaxies: active - galaxies: nuclei - galaxies: Seyfert
Abstract:
The Lick AGN Monitoring Project targeted 13 nearby Seyfert 1 galaxies
with the intent of measuring the masses of their central black holes
using reverberation mapping. The sample includes 12 galaxies selected
to have black holes with masses roughly in the range
106-107M☉, as well as the well-studied active galactic
nucleus (AGN) NGC 5548. In conjunction with a spectroscopic monitoring
campaign, we obtained broadband B and V images on most nights from
2008 February through 2008 May. The imaging observations were carried
out by four telescopes: the 0.76m Katzman Automatic Imaging Telescope,
the 2m Multicolor Active Galactic Nuclei Monitoring telescope, the
Palomar 60 inch (1.5m) telescope, and the 0.80m Tenagra II telescope.
Having well-sampled light curves over the course of a few months is
useful for obtaining the broad-line reverberation lag and black hole
mass, and also allows us to examine the characteristics of the
continuum variability. In this paper, we discuss the observational
methods and the photometric measurements, and present the AGN
continuum light curves. We measure various variability characteristics
of each of the light curves. We do not detect any evidence for a time
lag between the B- and V-band variations, and we do not find
significant color variations for the AGNs in our sample.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 61 13 Properties of AGNs in the sample
table6.dat 78 833 Photometry for the full sample
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See also:
J/A+A/314/43 : NGC 5548 Profile variability (Kollatschny+ 1996)
J/A+A/320/405 : NGC 5548 continuum light curve (Sergeev+ 1997)
J/AJ/116/102 : NGC 5548 BR photometry (Tyson+ 1998)
J/A+A/371/79 : NGC 5548 UBVRI phot. and Halpha, Hbeta fluxes (Dietrich+, 2001)
J/A+A/422/925 : Profile variability in lines of NGC 5548 (Shapovalova+ 2004)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 13 A13 --- Name AGN identification
15- 16 I2 h RAh 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- 42 F7.5 --- z NED redshift
44- 48 F5.3 mag AB Galactic extinction AB from Schlegel et al.,
1998ApJ...500..525S 1998ApJ...500..525S
50- 61 A12 --- OName Alternate name
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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- 13 A13 --- Name AGN identification
15- 24 A10 "YYYY/MM/DD" Obs.Date Date of the observation (UT)
26 A1 --- Obs Observation by KAIT (1)
28- 35 F8.4 d HJD-B ? B-band Heliocentric JD-2454000 date
37- 42 F6.3 mag Bmag ? The B-band magnitude
44- 48 F5.3 mag e_Bmag ? Error in Bmag
50- 52 F3.1 arcsec BFWHM ? Source FWHM in B-band image
54- 61 F8.4 d HJD-V ? V-band Heliocentric JD-2454000 date
63- 68 F6.3 mag Vmag ? The V-band magnitude
70- 74 F5.3 mag e_Vmag ? Error in Vmag
76- 78 F3.1 arcsec VFWHM ? Source FWHM in V-band image
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Note (1): the primary telescope is MAGNUM (2m), P60 (1.5m) or
Tenagra (0.8m), depending on target (see section 4.1); some
observations made by Katzman Automatic Imaging 0.8m Telescope (KAIT):
* = Observed by KAIT in the B band in place of the primary telescope.
d = Observed by KAIT in the V band in place of the primary telescope.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 10-Mar-2010