J/ApJS/145/199 Optical spectroscopic atlas of low-redshift AGN (Marziani+, 2003)
An optical spectroscopic atlas of low-redshift active galactic nuclei.
Marziani P., Sulentic J.W., Zamanov R., Calvani M., Dultzin-Hacyan D.,
Bachev R., Zwitter T.
<Astrophys. J. Suppl. Ser. 145, 199 (2003)>
=2003ApJS..145..199M 2003ApJS..145..199M
ADC_Keywords: Active gal. nuclei ; QSOs ; Atlases ; Spectroscopy ;
Equivalent widths
Keywords: atlases - galaxies: active - galaxies: nuclei -
quasars: emission lines - quasars: general
Abstract:
We present a spectral atlas of the Hβ region for 215 type 1 AGNs
(luminous Seyfert 1/radio galaxy nuclei and low-z quasars) up to
z∼0.8. Line profiles and measures were derived from the database of
intermediate resolution spectra (R≳1000) with average continuum level
S/N ratio ∼30. Parameters including rest frame equivalent width and
FWHM are provided for the FeIIopt blend at λ4570, Hβ,
HeII λ4686, and the [OIII] λλ4959, 5007
emission lines. We extract clean broad component Hβ profiles and
provide wavelength measurements at 0, 1/4, 1/2, 3/4, and 0.9 peak
intensity levels in order to permit a quantitative definition of the
Hβ broad component for statistical studies. We also discuss
sources of uncertainty, selection effects, and biases in our sample.
The data are especially important for tests of the eigenvector 1
parameter space occupation and correlation. We show that the I Zw 1
template FeIIopt spectrum reproduces well the observed FeIIopt
emission for a wide range of line width and strength. A detailed
analysis of the data within the eigenvector 1 context is deferred to a
companion paper.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 108 20 Synopsis of optical spectroscopy
table2.dat 98 215 Object identification and log of optical
observations
table3.dat 121 215 Spectrophotometric measurements
table4.dat 336 215 HβBC line profile measurements
table5.dat 128 143 Objects with repeated observations
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Run Observation run code
11- 31 A21 --- Site Identification of the observing site
33- 46 A14 ---- Dates Observation dates
49- 51 F3.1 m Apert Telescope aperture
53- 58 A6 --- Spect Spectrograph
60 A1 --- l_Disp [~] Limit flag on Disp
61- 63 I3 0.1nm/mm Disp Dispersion
66- 72 A7 --- Format Detector (always CCD) format in pixels
74- 90 A17 --- Manu CCD manufactured
94- 96 F3.1 arcsec Slit Slit width on the sky plane used for
science exposures
100 A1 --- l_SpRes [~] Limit flag on SpRes
102-104 F3.1 0.1nm SpRes Spectral resolution at FWHM measured on the
instrumental profile (identified by weak
comparison spectrum lines)
105 A1 --- --- [-]
106-108 F3.1 0.1nm SpRes2 ? Spectral resolution
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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- 11 A11 --- IName IAU Coordinate Name
16- 32 A17 --- CName Common name
33- 38 F6.4 --- z Redshift
40 A1 --- f_z Flag on z (1)
43- 47 F5.2 mag Vmag Visual magnitude
53- 58 F6.3 Jy F6cm ?=-9.999 Specific flux at 6 cm (2)
62- 66 F5.1 mag BMAG Absolute blue magnitude
71- 72 I2 d Obs.D Day of observation
74- 76 A3 "month" Obs.M Month of observation
78- 81 I4 yr Obs.Y Year of observation
87- 88 I2 h Obs.h UT hour of observation
90- 91 I2 min Obs.m UT minute of observation
95- 98 I4 s Exp Exposure Time in seconds
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Note (1): Notes on z as follows:
a = This work: z=0.1096
b = This work: z=0.2684
c = This work
d = This work: z=0.0377
e = This work: z=0.0478
f = This work: z=0.2783
Note (2): -9.999 represents objects for which no 6cm specific flux value
is available in Veron-Cetty and Veron Catalogue (Cat. VII/224).
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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 --- IName The IAU Coordinate Name
13- 14 I2 --- S/N The signal-to-noise ratio on continuum
16- 20 F5.1 0.1nm HbBEW Rest frame equivalent width of Hbeta
broad component in Angstroms
22- 26 F5.2 0.1nm e_HbBEW ?=-1.0 The 2σ confidence level
in HbBEW (1)
28- 32 F5.1 0.1nm HbBFW FWHM of Hbeta broad component
in Angstroms
34- 42 F9.4 10-17W/m2/nm C4861 Specific continuum flux at 4861 in units
of 10-15/erg/cm2^/s/Angstroms
44- 45 I2 --- Warn Warning flag on flux scale (2)
47- 51 F5.2 0.1nm FeUL Lower limit for FeII detectability
in Angstroms
53- 56 F4.1 0.1nm FeEW Rest frame equivalent width of FeII
blend at 4570 in Angstroms
58- 63 F6.2 0.1nm FeFW ?=-1.0 FWHM of FeII blend at 4570
in Angstroms (1)
65- 69 F5.2 0.1nm e_FeFW ?=-1.0 The 2σ confidence level
in FeFW (1)
71- 75 F5.2 0.1nm BCEW ?=-1.00 Rest Frame Equivalent Width of
HeII 4686 broad component in Angstroms (1)
77- 82 F6.2 0.1nm BCFW ?=-1.00 FWHM of HeII 4686 broad component
in Angstroms (1)
84- 92 F9.4 10-17W/m2/nm C4686 Specific continuum flux at 4686 in units
of 10-15/erg/cm2^/s/Angstroms
94- 98 F5.2 0.1nm HbNEW Rest Frame equivalent width of Hbeta
narrow component in Angstroms (1)
100-105 F6.2 0.1nm 5007EW ?=-1.00 Rest Frame Equivalent Width of
[OIII] 5007 in Angstroms (1)
107-115 F9.4 10-17W/m2/nm C5007 Specific continuum flux at 5007 in units
of 10-15/erg/cm2^/s/Angstroms (2)
117-121 F5.2 0.1nm NCEW ?=-1.00 Rest Frame Equivalent Width of
HeII 4686 narrow component in Angstroms (1)
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Note (1): The specific flux is rest frame, i.e., it has been multiplied by
a factor (1+z)3 when redshift correction was applied to the
wavelength scale of each spectrum.
-1.0 = an unavailable value.
Note (2): Special values:
0 = No known problems
-1 = may have suffered extraordinary light losses, or scale is not
in specific flux units
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 11 A11 --- IName The IAU Coordinate Name
13- 21 F9.4 10-17W/m2/nm Peak Flux at peak H-beta in units
of 10-15/erg/cm2^/s/Angstroms
24- 28 F5.4 --- F0 Fractional intensity level
30- 38 F9.4 0.1nm BW0 Wavelength of blue line side at F0
in Angstroms
40- 47 F8.4 0.1nm e_BW0 ?=-1.0000 Blueward error in BW0 (1)
49- 56 F8.4 0.1nm E_BW0 ?=-1.0000 Redward error in BW0 (1)
58- 66 F9.4 0.1nm RW0 Wavelength of red line side at F0
in Angstroms
68- 75 F8.4 0.1nm e_RW0 Blueward error in RW0
77- 84 F8.4 0.1nm E_RW0 Redward error in RW0
87- 91 F5.4 --- F1/4 Fractional intensity level
93-101 F9.4 0.1nm BW1/4 Wavelength of blue line side at F1/4
in Angstroms
103-110 F8.4 0.1nm e_BW1/4 Blueward error in BW1/4
112-119 F8.4 0.1nm E_BW1/4 Redward error in BW1/4
121-129 F9.4 0.1nm RW1/4 Wavelength of red line side at F1/4
in Angstroms
131-138 F8.4 0.1nm e_RW1/4 Blueward error in RW1/4
140-147 F8.4 0.1nm E_RW1/4 Redward error in RW1/4
150-154 F5.4 --- F2/4 Fractional intensity level
156-164 F9.4 0.1nm BW2/4 Wavelength of blue line side at F2/4
in Angstroms
166-173 F8.4 0.1nm e_BW2/4 Blueward error in BW2/4
175-182 F8.4 0.1nm E_BW2/4 Redward error in BW2/4
184-192 F9.4 0.1nm RW2/4 Wavelength of red line side at F2/4
in Angstroms
194-201 F8.4 0.1nm e_RW2/4 Blueward error in RW2/4
203-210 F8.4 0.1nm E_RW2/4 Redward error in RW2/4
213-217 F5.4 --- F3/4 Fractional intensity level
219-227 F9.4 0.1nm BW3/4 Wavelength of blue line side at 3/4
in Angstroms
229-236 F8.4 0.1nm e_BW3/4 Blueward error in BW3/4
238-245 F8.4 0.1nm E_BW3/4 Redward error in BW3/4
247-255 F9.4 0.1nm RW3/4 Wavelength of red line side at 3/4
in Angstroms
257-264 F8.4 0.1nm e_RW3/4 Blueward error in RW3/4
266-273 F8.4 0.1nm E_RW3/4 Redward error in RW3/4
276-280 F5.4 --- F0.9 Fractional intensity level
282-290 F9.4 0.1nm BW0.9 Wavelength of blue line side at 0.9
in Angstroms
292-299 F8.4 0.1nm e_BW0.9 Blueward error in BW0.9
301-308 F8.4 0.1nm E_BW0.9 Redward error in BW0.9
310-318 F9.4 0.1nm RW0.9 Wavelength of red line side at 0.9
in Angstroms
320-327 F8.4 0.1nm e_RW0.9 Blueward error in RW0.9
329-336 F8.4 0.1nm E_RW0.9 Redward error in RW0.9
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Note (1): -1.0000 = could not be reliably measured by our FORTRAN program but
can be properly estimated on the atlas.
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 11 A11 --- IName IAU Coordinate Name
13- 25 A13 --- CName Common name
27- 28 I2 d Obs.D Day of the observation
30- 32 A3 "month" Obs.M Month of the observation
34- 37 I4 yr Obs.Y Year of the observation
39- 40 I2 h Obs.h ? Starting UT Hour of the observation
42- 43 I2 min Obs.m ? Starting UT Minute of the observation
45 A1 --- f_Obs.h [?] Indicates an unknown observation time
47- 50 I4 s Exp Exposure time
52 A1 --- f_Obs.D [a] Spectrum reported in Table 2 (1)
54 A1 --- Flag Object flag (2)
56-119 A64 --- Notes Further notes
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Note (1): a indicates that this date refers to the spectrum reported
in Table 2 and plotted in the atlas (Fig. 4).
Note (2): Flags as follows:
N = no evidence for strong HβBC profile variation
Y = positive evidence for strong HβBC profile variation
P = variation was possible but confirming data are needed
Note that the flag refers an analysis of the spectra listed in
Table 5 only.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Bauer [CDS] 31-Mar-2003