J/ApJ/795/149 Reverberation mapping of the Seyfert 1 NGC 7469 (Peterson+, 2014)
Reverberation mapping of the Seyfert 1 galaxy NGC 7469.
Peterson B.M., Grier C.J., Horne K., Pogge R.W., Bentz M.C., De Rosa G.,
Denney K.D., Martini P., Sergeev S.G., Kaspi S., Minezaki T., Zu Y.,
Kochanek C.S., Siverd R.J., Shappee B., Araya Salvo C., Beatty T.G.,
Bird J.C., Bord D.J., Borman G.A., Che X., Chen C.-T., Cohen S.A.,
Dietrich M., Doroshenko V.T., Drake T., Efimov YU.S., Free N., Ginsburg I.,
Henderson C.B., King A.L., Koshida S., Mogren K., Molina M., Mosquera A.M.,
Motohara K., Nazarov S.V., Okhmat D.N., Pejcha O., Rafter S., Shields J.C.,
Skowron D.M., Skowron J., Valluri M., van Saders J.L., Yoshii Y.
<Astrophys. J., 795, 149 (2014)>
=2014ApJ...795..149P 2014ApJ...795..149P (SIMBAD/NED BibCode)
ADC_Keywords: Galaxies, Seyfert ; Spectroscopy
Keywords: galaxies: active - galaxies: individual: NGC 7469 -
galaxies: nuclei - galaxies: Seyfert
Abstract:
A large reverberation-mapping study of the Seyfert 1 galaxy NGC 7469
has yielded emission-line lags for Hβ λ4861 and
He II λ4686 and a central black hole mass measurement
MBH~ 1x107 M☉, consistent with previous measurements.
A very low level of variability during the monitoring campaign
precluded meeting our original goal of recovering velocity-delay maps
from the data, but with the new Hβ measurement, NGC 7469 is no
longer an outlier in the relationship between the size of the
Hβ-emitting broad-line region and the luminosity of the active
galactic nucleus. It was necessary to detrend the continuum and
Hβ and He II λ4686 line light curves and those from
archival UV data for different time-series analysis methods to yield
consistent results.
Description:
We obtained 73 spectra with the Boller and Chivens CCD spectrograph on
the MDM Observatory 1.3 m McGraw-Hill telescope on Kitt Peak. The
data were collected over the course of 120 nights from 2010 August 31
to December 28. We used a 350 mm-1 grating to obtain a dispersion
of 1.33 Å/pixel. We set the grating for a central wavelength of
5150 Å, which resulted in spectral coverage over the range of
4400-5850 Å. The slit was oriented north-south (position angle
PA=0 °) with a projected width of 5.0'' that produces a spectral
resolution of 7.9 Å. We used an extraction window of 12.0'' along
the slit.
Objects:
---------------------------------------------------
RA (ICRS) DE Designation(s)
---------------------------------------------------
23 03 15.67 +08 52 25.3 NGC 7469 = UGC 12332
---------------------------------------------------
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 23 276 Continuum Fluxes
table2.dat 32 73 Emission-Line Fluxes
--------------------------------------------------------------------------------
See also:
J/AZh/71/200 : Spectral Investigation of NGC 7469 (Doroshenko+, 1994)
J/PAZh/21/652 : Optical variability in NGC 7469 (Lyuty+, 1995)
J/ApJ/755/60 : Reverberation mapping for five Seyfert 1 galaxies
(Grier+, 2012)
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 F8.3 d HJD Heliocentric Julian Date (HJD-2450000)
10 A1 --- Obs Observatory code (1)
12- 17 F6.3 10-17W/m2/nm FC Continuum flux at 5100 Angstroms (2)
19- 23 F5.3 10-17W/m2/nm e_FC Uncertainty in FC (2)
--------------------------------------------------------------------------------
Note (1): Code as follows:
C = CRAO;
W = WISE;
M = MDM;
S = SMARTS;
T = miniTAO.
Note (2): In units of 1e-15 erg/s/cm2/Å.
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 F8.3 d HJD Heliocentric Julian Date (HJD-2450000)
10- 14 F5.3 10-16W/m2 FHb Integrated Hβ emission line flux (1)
16- 20 F5.3 10-16W/m2 e_FHb Uncertainty in FHb (1)
22- 26 F5.3 10-16W/m2 FHeII Integrated He II (4686Å) emission
line flux (1)
28- 32 F5.3 10-16W/m2 e_FHeII Uncertainty in FHeII (1)
--------------------------------------------------------------------------------
Note (1): In units of 1e-13 erg/s/cm2.
--------------------------------------------------------------------------------
History:
From electronic version of the journal
(End) Prepared by [AAS], Tiphaine Pouvreau [CDS] 23-May-2017