J/ApJS/175/314 VSOP 5GHz AGN survey V. (Dodson+, 2008)
The VSOP 5 GHz active galactic nucleus survey.
V. Imaging results for the remaining 140 sources.
Dodson R., Fomalont E.B., Wiik K., Horiuchi S., Hirabayashi H.,
Edwards P.G., Murata Y., Asaki Y., Moellenbrock G.A., Scott W.K.,
Taylor A.R., Gurvits L.I., Paragi Z., Frey S., Shen Z.-Q., Lovell J.E.J.,
Tingay S.J., Rioja M.J., Fodor S., Lister M.L., Mosoni L., Coldwell G.,
Piner B.G., Yang J.
<Astrophys. J. Suppl. Ser., 175, 314-355 (2008)>
=2008ApJS..175..314D 2008ApJS..175..314D
ADC_Keywords: Active gal. nuclei ; Radio continuum ; Surveys
Keywords: galaxies: active - radio continuum: galaxies - surveys
Abstract:
In 1997 February, the Japanese radio astronomy satellite HALCA was
launched to provide the space-bourne element for the VLBI Space
Observatory Program (VSOP) mission. Approximately 25% of the mission
time was dedicated to the VSOP survey of bright compact active
galactic nuclei (AGNs) at 5GHz. This paper, the fifth in the series,
presents images and models for the remaining 140 sources not included
in the third paper in the series, which contained 102 sources. For
most sources, the plots of the (u,v) coverage, the visibility
amplitude versus (u,v) distance, and the high-resolution image are
presented. Model fit parameters to the major radio components are
determined, and the brightness temperature of the core component for
each source is calculated. The brightness temperature distributions
for all of the sources in the VSOP AGN survey are discussed.
Description:
The VSOP mission and the 5GHz AGN Survey are fully discussed in
Hirabayashi et al. (1998Sci...281.1825H 1998Sci...281.1825H, 2000PASJ...52..955H 2000PASJ...52..955H),
Paper I (Hirabayashi et al., 2000, Cat J/PASJ/52/997), and
Fomalont et al. (2000, Cat. J/ApJS/131/95). Observations began in
1997 August, with the final observations being made in 2003 October.
Of the VSS sample of 294 sources, all but 29 were observed.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 64 294 VSOP AGN Survey source list
table2.dat 96 140 Survey experiment details
table3.dat 49 268 Source component parameters
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See also:
http://www.vsop.isas.ac.jp/ : the VSOP Home Page
http://www.vsop.isas.jaxa.jp/survey : The VSOP Survey Home Page
VII/248 : Quasars and Active Galactic Nuclei (12th Ed.) (Veron+ 2006)
J/ApJS/128/17 : VLBA obs. of radio reference frame sources. III. (Fey+, 2000)
J/ApJS/131/95 : VSOP 5 GHz continuum survey (Fomalont+, 2000)
J/PASJ/52/997 : VSOP 5 GHz AGN Survey. I (Hirabayashi+, 2000)
J/ApJS/155/33 : VSOP 5 GHz AGN Survey. III (Scott+, 2004)
J/ApJ/616/110 : VSOP 5GHz AGN Survey. IV (Horiuchi+, 2004)
J/PASJ/55/351 : ATCA observations of 202 compact radio sources (Tingay+, 2003)
J/AJ/127/3609 : VLBI observations of southern ICRF sources (Ojha+, 2004)
J/AJ/130/1389 : Linear polarization of AGN jets at 15GHz (Lister+, 2005)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- VSOP IAU Name (JHHMM+DDMM)
12- 16 F5.2 Jy S5 Total flux density at 5GHz
18 A1 --- r_S5 [*+] Origin of the 5GHz flux (1)
20- 25 A6 --- Type Object type listed in NED (2)
27- 31 F5.3 --- z ? Redshift (3)
32 A1 --- r_z [*] Source of redshift (3)
34- 38 A5 --- Exp VSOP experiment code
40 A1 --- n_Exp [*] not observed
42- 45 A4 --- Ref Paper with results (4)
47 A1 --- l_Tb Limit flag on Tb
48- 50 F3.1 10+12K Tb ? Best-fit brightness temperature of the
core in the observer frame
52- 55 F4.2 mas2 Area ? Detected core area (0 = point source)
57- 60 F4.2 Jy S5r ? Flux density remaining at the longest
baselines
62- 64 I3 --- blen ? Baseline length, in units of Mλ
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Note (1): Origin of the flux:
+ = Total flux density from Tingay et al. (2003, Cat. J/PASJ/55/351)
* = Total flux density from UMRAO (University of Michigan
Radio Astronomy Observatory)
(blank) = Total flux density as given by NED (NASA/IPAC Extragalactic Database)
Note (2): Object type as follows:
QSO = quasar
G = galaxy
RadioS = radio source
VisS = visual source
Note (3): redshift measurement from Veron-Cetty & Veron (2006, Cat. VII/248)
except where r_z=*, in which case it is from NED.
Note (4): Paper in which the results are found as follows:
III = Paper III (Scott et al., 2004ApJS..155...33S 2004ApJS..155...33S; Cat. J/ApJS/155/33)
V = Paper V (this paper)
1 = Fomalont et al., 2000ApJS..131...95F 2000ApJS..131...95F; Cat. J/ApJS/131/95
2 = Kellermann et al., 1998AJ....115.1295K 1998AJ....115.1295K;
3 = Fey & Charlot, 2000ApJS..128...17F 2000ApJS..128...17F; Cat. J/ApJS/128/17
4 = Zensus et al., 2002AJ....124..662Z 2002AJ....124..662Z;
5 = Ojha et al. 2004; 2004AJ....127.3609O 2004AJ....127.3609O; Cat. J/AJ/127/3609
6 = Lister & Homan, 2005AJ....130.1389L 2005AJ....130.1389L; Cat. J/AJ/130/1389
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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- 10 A10 --- VSOP Source name (JHHMM+DDMM, J2000)
12- 19 A8 --- Bname B1950 name (HHMM+DDd)
21- 29 A9 --- Oname Other designation
31- 35 A5 --- Ocode VSOP Observation code (6)
36 A1 --- n_Ocode [*] is a GOT extraction
38- 47 A10 "YYYY/MM/DD" ObsDate Starting date of the observation
49- 58 A10 "YYYY/MM/DD" ObsDate2 Potential second date of observation
60- 66 A7 --- GRT Ground radio telescopes (1)
68- 71 A4 --- TS Tracking stations (2)
73- 77 A5 "h:m" ObsTime Approximate time on source over which
fringes were found
79- 83 A5 "h:m" HALCA Approximate HALCA time on source over
which fringes were found
85- 86 A2 --- corr Correlator (3)
88 A1 --- Cl Optical classification (4)
89 A1 --- r_Cl [*] Optical classification from NED (4)
91- 95 F5.3 --- z ? Redshift (5)
96 A1 --- r_z [*] Redshift from NED (5)
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Note (1): Ground radio telescopes with successful fringes observed
are defined as follows (lower case letters indicate VLBA GRTs;
upper Case letters indicate other GRTs):
b = Brewster;
f = Fort Davis;
h = Hancock;
k = Kitt Peak;
l = Los Alamos;
m = Mauna Kea;
n = North Liberty;
o = Owens Valley;
p = Pie Town;
s = St. Croix.
X = Arecibo;
A = ATCA;
C = Ceduna;
E = Effelsburg;
I = Medicina;
G = Green Bank 140';
H = Hartebeesthoek;
T = Hobart;
J = Jodrell Bank MkII;
R = Kalyazin;
K = Kashima;
N = Noto;
M = Mopra;
O = Onsala;
S = Sheshan;
P = Torun;
U = Usuda;
Y = VLA.
Note (2): Tracking Stations to which fringes were successfully obtained:
G = Goldstone;
N = Green Bank;
R = Robledo;
T = Tidbinbilla;
U = Usuda.
Note (3): Correlator has the following meaning:
M = Mitaka
P = Penticton
S = Socorro
Note (4): Optical classification as follows:
q = quasar
b = BL Lac object
g = AGN other than b or q (e.g. Seyfert galaxy)
e = empty field or unidentified optical counterpart
Optical classification from Veron-Cetty & Veron (2006, Cat. VII/248)
unless r_Cl=*, in which case it is from NED.
Note (5): Redshift from Veron-Cetty & Veron (2006, Cat. VII/248) unless
r_z=*, in which case it is from NED.
Note (6): The VSOP observation code is detailed in
http://www.vsop.isas.ac.jp/survey/
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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- 10 A10 --- VSOP Source designation (JHHMM+DDMM)
12- 15 F4.2 Jy S Integrated 5GHz flux density of the component
17- 20 F4.1 mas Rad Radial distance from map center
22- 25 I4 deg Phi ?=- Position angle from map center (1)
27- 29 F3.1 mas MajAxis FWHM of the major axis of the component
31- 33 F3.1 mas MinAxis FWHM of the minor axis of the component
35- 37 I3 deg PA [-90/90]?=- Position angle of the major axis
of the component, measured from North to East
39 A1 --- l_Tb Limit flag on Tb
40- 43 F4.2 10+12K Tb ? Measured observer frame brightness
temperature of the component (2)
45- 48 F4.2 10+12K Tblim ? Lower limit to the brightness temperature of
the component, in the source frame
49 A1 --- f_Tblim [*] Tblim is expressed in the observer frame
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Note (1): Position angle measured counterclockwise from an imaginary
vertical line from the map center toward the north.
Note (2): This can be converted to source frame temperature by multiplying
by 1+z, where z is to be found in Table 2.
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History:
From electronic version of the journal
* 04-Sep-2009: table1, VSOP name J1932-4536 replaced by J1932-4546
(to be coherent with the VSOP catalog by Hirabayashi et al.,
2000PASJ...52..997H 2000PASJ...52..997H, Cat. J/PASJ/52/997)
* 14-Sep-2009: table1, VSOP name J1932-4536 / J1932-4546
J1932-4536 appears to be the correct name.
Acknowledgements:
Richard Dodson (Western Australia Univ.)
References:
Hirabayashi et al., Paper I. 2000PASJ...52..997H 2000PASJ...52..997H. Cat J/PASJ/52/997
Lovell et al., Paper II. 2004ApJS..155...27L 2004ApJS..155...27L
Scott et al., Paper III. 2004ApJS..155...33S 2004ApJS..155...33S. Cat J/ApJS/155/33
Horiuchi et al., Paper IV. 2004ApJ...616..110H 2004ApJ...616..110H. Cat J/ApJ/616/110
(End) Emmanuelle Perret, Francois Ochsenbein [CDS] 12-Aug-2009