J/A+A/492/637 Eddington ratios of faint AGN (Gavignaud+, 2008)
Eddington ratios of faint AGN at intermediate redshift:
evidence for a population of half-starved black holes.
Gavignaud I., Wisotzki L., Bongiorno A., Paltani S., Zamorani G.,
Moller P., Le Brun V., Husemann B., Lamareille F., Schramm M., Le Fevre O.,
Bottini D., Garilli B., Maccagni D., Scaramella R., Scodeggio M.,
Tresse L., Vettolani G., Zanichelli A., Adami C., Arnaboldi M., Arnouts S.,
Bardelli S., Bolzonella M., Cappi A., Charlot S., Ciliegi P., Contini T.,
Foucaud S., Franzetti P., Guzzo L., Ilbert O., Iovino A., McCracken H.J.,
Marano B., Marinoni C., Mazure A., Meneux B., Merighi R., Pello R.,
Pollo A., Pozzetti L., Radovich M., Zucca E., Bondi M., Busarello G.,
Cucciati O., De La Torre S., Gregorini L., Mellier Y., Merluzzi P.,
Ripepi V., Rizzo D., Vergani D.
<Astron. Astrophys., 492, 637-650 (2008)>
=2008A&A...492..637G 2008A&A...492..637G (SIMBAD/NED BibCode)
ADC_Keywords: Active gal. nuclei ; Photometry, UBVRI ; Redshifts
Keywords: galaxies: active - galaxies: Seyfert - galaxies: nuclei
Abstract:
We use one of the deepest spectroscopic samples of broad-line active
galactic nuclei (AGN) currently available, extracted from the VIMOS
VLT Deep Survey (VVDS, Cat. III/250), to compute the MgII and CIV
virial-mass estimates of 120 super-massive black holes in the redshift
range 1.0<z<1.9 and 2.6<z<4.3.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea1.dat 56 91 Black hole masses and Eddington ratios estimated
from the MgII emission line
tablea2.dat 56 29 Black hole masses and Eddington ratios estimated
from the CIV emission line
tableb1.dat 90 235 Catalog of broad-line AGN with secure redshift
tableb2.dat 110 63 AGN with a single emission line detected (flag 19)
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See also:
III/250 : The VIMOS VLT deep survey (VVDS-DEEP) (Le Fevre+ 2005)
VII/241 : The 2dF QSO Redshift Survey (Croom+ 2004)
II/282 : The SDSS Photometric Catalog, DR6 (Adelman-McCarthy+, 2007)
II/286 : VIRMOS deep imaging survey. VVDS-F02 cat. (VIRMOS team+, 2008)
J/ApJS/155/271 : Chandra DFS: Optical spectroscopy (Szokoly+, 2004)
Byte-by-byte Description of file: tablea1.dat
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Bytes Format Units Label Explanations
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1- 9 I09 --- VVDS Object identification number of the VVDS
database
11- 15 F5.3 --- z Redshift
17- 21 F5.2 mag Imag I magnitude in the AB system
24- 27 F4.1 --- S/N Mean S/N per pixel in the vicinity of the
broad-emission line
29- 33 F5.2 [10-7W] logL3000 Monochromatic luminosity at 3000Å
35- 39 F5.2 [10-7W] logLBol Corresponding bolometric luminosity
41- 45 I5 km/s FWHM FWHM of the MgII line
47- 50 F4.2 [solMass] logMBH Estimate of the virial black hole Mass as
obtained from Eq. (1) of the paper
52- 56 F5.2 --- logeps Eddington ratio log(Lbol/LEdd)
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Byte-by-byte Description of file: tablea2.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 9 I09 --- VVDS Object identification number of the VVDS
database
11- 15 F5.3 --- z Redshift
17- 21 F5.2 mag Imag I magnitude in the AB system
23- 27 F5.1 --- S/N Mean S/N per pixel in the vicinity of the
broad-emission line
29- 33 F5.2 [10-7W] logL1350 Monochromatic luminosity at 1350Å
35- 39 F5.2 [10-7W] logLBol Corresponding bolometric luminosity
41- 45 I5 km/s FWHM FWHM of the CIV line
47- 50 F4.2 [solMass] logMBH Estimate of the virial black hole Mass as
obtained from Eq. (2) of the paper
52- 56 F5.2 --- logeps Eddington ratio log(Lbol/LEdd)
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Byte-by-byte Description of file: tableb1.dat
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Bytes Format Units Label Explanations
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1 A1 --- Reg Region of the observation (G1)
3- 11 I09 --- VVDS Object identification number of the VVDS
database
13- 14 I2 h RAh Right ascension (J2000)
16- 17 I2 min RAm Right ascension (J2000)
19- 23 F5.2 s RAs Right ascension (J2000)
25 A1 --- DE- Declination sign (J2000)
26- 27 I2 deg DEd Declination (J2000)
29- 30 I2 arcmin DEm Declination (J2000)
32- 36 F5.2 arcsec DEs Declination (J2000)
38- 43 F6.4 --- z Redshift
45- 47 I3 --- q_z Redshift quality flag (2)
49 I1 --- Ep VVDS observation epoch
51- 55 F5.2 mag Bmag ? B magnitude in AB system (G3)
57- 61 F5.2 mag Vmag ? V magnitude in AB system (G3)
63- 67 F5.2 mag Rmag ? R magnitude in AB system (G3)
69- 73 F5.2 mag Imag I magnitude in AB system (G3)
75- 84 A10 --- Morph Morphology classification in the I-band (G4)
86- 90 A5 --- Rem Remarks (5)
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Note (2): Flag 14 AGN have a 100% secure redshift based on at least two
emission lines. Flag 13 AGN have a redshift which is based on one
broad emission line with a confident identification: either no other
identification is very similar given our spectral wavelength coverage,
or some faint additional features are supporting the chosen redshift
Note (5): We indicate here, AGN for which a single broad emission line is
detected in the VVDS original spectrum but for which a second line is
detected at shorter wavelength either in our VIMOS and FORS follow-up
programs, or in one of these spectroscopic survey:
2Qz = 2Qz, Croom et al., 2004, Cat. VII/241
SDSS = SDSS DR6 Adelman-McCarthy et al., 2008, Cat. II/282
Sz. = spectroscopic catalog of the CDFS Szokoly et al., 2004,
Cat. J/ApJS/155/271
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Byte-by-byte Description of file: tableb2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1 A1 --- Reg Region of the observation (G1)
3- 11 I09 --- VVDS Object identification number of the VVDS
database
13- 14 I2 h RAh Right ascension (J2000)
16- 17 I2 min RAm Right ascension (J2000)
19- 23 F5.2 s RAs Right ascension (J2000)
25 A1 --- DE- Declination sign (J2000)
26- 27 I2 deg DEd Declination (J2000)
29- 30 I2 arcmin DEm Declination (J2000)
32- 36 F5.2 arcsec DEs Declination (J2000)
38 I1 --- Ep VVDS observation epoch
40- 43 I4 0.1nm lamBL Observed wavelength of the broad-emission line
45- 50 F6.4 --- z Possible redshift
51 A1 --- n_z [abcd] Redshift origin (2)
53- 58 F6.4 --- z2 Possible redshift
59 A1 --- n_z2 [abcd] Redshift origin (2)
61- 66 F6.4 --- z3 ? Possible redshift
67 A1 --- n_z3 [abcd] Redshift origin (2)
69- 74 F6.4 --- z4 ? Possible redshift
75 A1 --- n_z4 [abcd] Redshift origin (2)
77- 81 F5.2 mag Bmag ? B magnitude in AB system (G3)
83- 87 F5.2 mag Vmag ? V magnitude in AB system (G3)
89- 93 F5.2 mag Rmag ? R magnitude in AB system (G3)
95- 99 F5.2 mag Imag I magnitude in AB system (G3)
101-110 A10 --- Morph Morphology classification in the I-band (G4)
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Note (2): Note on redshift as follows:
a = from Hα
b = from MgII
c = from CIII
d = from CIV
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Global notes:
Note (G1): Reg is coded as follows:
A = CDFS: Deep mode
B = 0226-04: Deep mode
C = 1003+01: Wide mode
D = 1400+05: Wide mode
E = 2217+00: Wide mode
Note (G3): Photometry in the CDFS field is extracted from the EIS catalog
(Arnouts et al., 2001, Cat. J/A+A/379/740) while in the 4 other
fields it corresponds to the VVDS imaging survey (McCracken et al.,
2003A&A...410...17M 2003A&A...410...17M, Cat. II/286). These magnitudes are corrected
for galactic extinction using the dust map provided by Schlegel et al.
(1998ApJ...500..525S 1998ApJ...500..525S)
Note (G4): Based on the half-light radius of the object. Object with with
IAB>22.5 or in the CDFS and VVDS-1400+05 field are not classified.
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 26-Jan-2009