J/ApJ/795/58 1H 0323+342 rest frame optical spectrum with GHAO (Leon+, 2014)
The host galaxy of the gamma-ray narrow-line Seyfert 1 galaxy 1H 0323+342.
Leon Tavares J., Kotilainen J., Chavushyan V., Anorve C., Puerari I.,
Cruz-Gonzalez I., Patino-Alvarez V., Anton S., Carraminana A., Carrasco L.,
Guichard J., Karhunen K., Olguin-Iglesias A., Sanghvi J., Valdes J.
<Astrophys. J., 795, 58 (2014)>
=2014ApJ...795...58L 2014ApJ...795...58L (SIMBAD/NED BibCode)
ADC_Keywords: Galaxies, Seyfert ; Galaxies, optical ; Spectroscopy
Keywords: galaxies: evolution - galaxies: individual: 1H 0323+342 -
galaxies: interactions - galaxies: jets - galaxies: Seyfert -
gamma rays: galaxies
Abstract:
We present optical and near-infrared (NIR) imaging data of the
radio-loud, narrow-line Seyfert 1 galaxy 1H 0323+342, which shows
intense and variable gamma-ray activity discovered by the Fermi
satellite with the Large Area Telescope. Near-infrared and optical
images are used to investigate the structural properties of the host
galaxy of 1H 0323+342; this together with optical spectroscopy allows
us to examine its black hole mass. Based on two-dimensional (2D)
multiwavelength surface-brightness modeling, we find that
statistically, the best model fit is a combination of a nuclear
component and a Sersic profile (n∼2.8). However, the presence of a
disk component (with a small bulge n∼1.2) also remains a possibility
and cannot be ruled out with the present data. Although at first
glance a spiral-arm-like structure is revealed in our images, a 2D
Fourier analysis of the imagery suggests that this structure
corresponds to an asymmetric ring, likely associated with a recent
violent dynamical interaction. We discuss our results in the context
of relativistic jet production and galaxy evolution.
Description:
Within the framework of a spectrophotometric monitoring program of
bright γ-ray sources (Patino-Alvarez et al. 2013,
Proc. Fermi Symposium, 1303.1893), we undertook spectroscopic
observations of 1H 0323+342 using the Boller & Chivens long-slit
spectrograph on the 2.1 m Guillermo Haro Astrophysical Observatory
(GHAO) in Sonora, Mexico. The spectra were obtained under photometric
weather conditions (2012 September 17, 2013 January 9, 2013 February 7
and 11) using a slit width of 2.5 arcsec. The spectral resolution was
R=15 Å and R=7 Å (FWHM) for the low-resolution and
intermediate-resolution spectra, respectively. The wavelength range
for the three low-resolution spectra is 3800-7100 Å, and for one
intermediate-resolution spectrum the wavelength range is 4300-5900 Å.
The signal-to-noise ratio (S/N) was >40 in the continuum near HΒ.
To enable a wavelength calibration, HeAr lamp spectra were taken after
each object exposure. Spectrophotometric standard stars were observed
every night (at least two per night) to enable flux calibration.
Objects:
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RA (ICRS) DE Designation(s)
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03 24 41.16 +34 10 45.9 1H 0323+342 = QSO J0324+3410
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
fig2.dat 18 1153 *Rest frame optical spectrum of 1H 0323+342,
taken with the GHAO on 17th September 2012
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Note on fig2.dat: Spectrum was obtained on September 17 2012 with the 2.1m
Guillermo Haro Astrophysical Observatory telescope and the Boller & Chivens
Spectrograph with 15 Angstroms resolution.
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See also:
VII/173 : Catalogue of Seyfert Galaxies (Lipovetsky+, 1988)
J/A+A/459/55 : Narrow-band imaging of 5 Seyfert-1 galaxies (Bennert+, 2006)
J/AJ/143/83 : Properties of a sample of Seyfert 1 galaxies (Xu+, 2012)
Byte-by-byte Description of file: fig2.dat
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Bytes Format Units Label Explanations
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1- 8 F8.3 0.1nm Wavelength Wavelength in rest frame
10- 18 E9.3 cW/m2/nm Flux Flux; erg/cm2/s/Angstroms
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History:
From electronic version of the journal
(End) Prepared by [AAS], Tiphaine Pouvreau [CDS] 19-May-2017