J/A+A/435/521 Radio Sources in Low-Luminosity AGNs. IV (Nagar+, 2005)
Radio Sources in Low-Luminosity Active Galactic Nuclei.
IV. Radio Luminosity Function, Importance of Jet Power,
and Radio Properties of the Complete Palomar Sample
Nagar N.M., Falcke H., Wilson A.S.
<Astron. Astrophys. 435, 521 (2005)>
=2005A&A...435..521N 2005A&A...435..521N
ADC_Keywords: Galaxies, radio; Active gal. nuclei; Galaxies, nearby;
Galaxies, Seyfert
Keywords: accretion, accretion disks - galaxies: active - galaxies: jets -
galaxies: nuclei - radio continuum: galaxies - surveys
Abstract:
We present the completed results of a high resolution radio imaging
survey of all (∼200) low-luminosity active galactic nuclei (LLAGNs)
and AGNs in the Palomar Spectroscopic Sample of all (∼488) bright
northern galaxies. The high incidences of pc-scale radio nuclei, with
implied brightness temperatures ≳10^7K, and sub-parsec jets argue
for accreting black holes in ≥50% of all LINERs and low-luminosity
Seyferts; there is no evidence against all LLAGNs being mini-AGNs. The
detected parsec-scale radio nuclei are preferentially found in massive
ellipticals and in type 1 nuclei (i.e. nuclei with broad Halpha
emission). The radio luminosity function (RLF) of Palomar Sample
LLAGNs and AGNs extends three orders of magnitude below, and is
continuous with, that of 'classical' AGNs. We find marginal evidence
for a low-luminosity turnover in the RLF; nevertheless LLAGNs are
responsible for a significant fraction of present day mass accretion.
Description:
Results of VLA and VLBA radio imaging of low-luminosity active
galactic nuclei (LLAGNs) and AGNs in the Palomar sample are presented
in these two on-line tables (both tables are also available in the
printed version).
Table 1: Table 1 lists the results of high resolution VLA radio
imaging for all Palomar sample LLAGNs and AGNS. Columns 1 to 4 are
listed for all Palomar AGNs and LLAGNs. For nuclei in our survey, all
relevant columns are listed. For data taken from the literature, only
a few of the relevant columns are filled and the remaining data can be
found in the corresponding reference (last column of the table).
Table 2: Table 2 lists the results of VLBA/VLBI observations for all
LLAGNs and AGNs in the Palomar sample observed with the VLBA/VLBI .
All relevant columns are listed for nuclei observed by us. Only a few
of the relevant columns are filled for data taken from the literature;
full data on these nuclei are available in the corresponding
references (last column of the table).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 103 197 *High-resolution 15GHz VLA imaging of Palomar
AGN & LLAGN (low-luminosity AGN)
table2.dat 159 44 *VLBI observations of Palomar LLAGN & AGN
notes.dat 80 35 Notes
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Note on table1.dat and table2.dat: Not all columns are filled for data taken
from the literature; complete data on these can be found in the reference
listed in the last column.
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See also:
J/ApJS/112/315 : Spectroscopic parameters of Seyfert nuclei (Ho+ 1997)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- Name Name from NGC or IC catalog
10- 18 A9 --- AType Activity Type (G1)
20- 23 F4.1 --- TType Morphological type
27- 30 F4.1 Mpc Dist Distance
34- 35 I2 h RAObsh ? Observed right ascension (J2000.0)
37- 38 I2 min RAObsm ? Observed right ascension (J2000.0)
40- 45 F6.3 s RAObss ? Observed right ascension (J2000.0)
49 A1 --- DEObs- Observed declination sign (J2000.0)
50- 51 I2 deg DEObsd ? Observed declination (J2000.0)
53- 54 I2 arcmin DEObsm ? Observed declination (J2000.0)
56- 60 F5.2 arcsec DEObss ? Observed declination (J2000.0)
63- 66 F4.1 arcsec Delta ? Angular separation between nuclear radio and
optical positions
74- 79 F6.1 mJy Sp15GHz ? Peak VLA 15GHz flux
82 A1 --- l_St15GHz Limit sign for total flux
83- 88 F6.1 mJy St15GHz ? Total VLA 15GHz flux
93 A1 --- l_Lp15GHz Limit sign for luminosity
95- 99 F5.2 W/Hz Lp15GHz ? Corresponding peak 15GHz luminosity
102-103 I2 --- Note ? Comments, in notes.dat file
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 7 A7 --- Name Name from NGC catalog
10- 18 A9 --- AType Activity Type (from Ho et al., 1997,
Cat. J/ApJS/112/315) (G1)
20- 23 F4.1 --- TType Morphological type (from Ho et al., 1997,
Cat. J/ApJS/112/315)
27- 30 F4.1 Mpc Dist Distance (from Ho et al., 1997,
Cat. J/ApJS/112/315)
33- 36 F4.1 10-7W LHalpha Halpha luminosity (from Ho et al., 1997,
Cat. J/ApJS/112/315)
38 A1 --- n_LHalpha [Lbc] Limit/quality flag for LHalpha (from Ho
et al., 1997, Cat. J/ApJS/112/315) (1)
41- 42 I2 h RAObsh ? Observed right ascension (J2000.0)
44- 45 I2 min RAObsm ? Observed right ascension (J2000.0)
47- 53 F7.4 s RAObss ? Observed right ascension (J2000.0)
55 A1 --- DEObs- Observed declination sign (J2000.0)
56- 57 I2 deg DEObsd ? Observed declination (J2000.0)
59- 60 I2 arcmin DEObsm ? Observed declination (J2000.0)
62- 67 F6.3 arcsec DEObss ? Observed declination (J2000.0)
70- 75 F6.1 mJy Sp5GHz ? Peak VLBA/I (5GHz) flux of the nuclear source
79 A1 --- l_St5GHz Limit sign for Total VLBA/I flux of nuclear
source
81- 84 F4.1 mJy St5GHz ? Total VLBA/I (5GHz) flux of the nuclear source
88- 92 F5.1 mJy Stot ? Total mas-scale flux
95 A1 --- l_Lp15GHz Limit sign for luminosity
97-101 F5.2 W/Hz Lp15GHz 15GHz luminosity (derived from the Peak VLBA/I
flux)
105-108 F4.1 mas Size ? Angular size of VLBA/I mas-scale extended
emission
112-115 I4 deg PA [-100/290]? Position angle of VLBA/I mas-scale
extended emission
119-121 F3.1 mas majB ? Beam size (major axis) in milliarcsec
124-126 F3.1 mas minB ? Beam size (minor axis) in milliarcsec
130-132 I3 deg PAB ? Beam position angle (North to East)
136-137 A2 --- l_logT [<≥ ] limit sign to implied brightness
temperature
139-142 F4.1 [K] logT ? Implied brightness temperature
146-149 F4.2 pc/mas Scale Linear scale at the distance of the source
152-156 A5 --- Note Comments, in notes.dat file
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Note (1): Limit/quality flag for LHalpha as follows:
L = 3σ lower limit
b = Values with uncertainties of ±30%-50%
c = highly uncertain values with probable errors of ±100%
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Byte-by-byte Description of file: notes.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Note Note number
4- 80 A77 --- Text Text of the note
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Global notes:
Note (G1): Activity type:
H = H II nucleus
S = Seyfert galaxy
L = LINER
T = Transition object
The number attached to the class letter designates the type (1.0, 1.2,
1.5, 1.8, 1.9 and 2); quality ratings are given by ":" and "::" for
uncertain and highly uncertain classification, respectively.
Two classifications are given for ambiguous cases, where the first
entry corresponding to the adopted choice.
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Acknowledgements: Neil Nagar, nagar(at)astro-udec.cl
References:
Nagar et al., Paper I 2000ApJ...542..186N 2000ApJ...542..186N
Falcke et al., Paper II 2000ApJ...542..197F 2000ApJ...542..197F
Nagar et al., Paper III 2002A&A...392...53N 2002A&A...392...53N
(End) Neil Nagar [Univ. de Concepcion, Chile] Patricia Vannier [CDS] 02-May-2005