J/MNRAS/458/3786 CSS and GPS radio sources sample (Jeyakumar, 2016)
Numerical calculations of spectral turnover and synchrotron self-absorption in
CSS and GPS radio sources.
Jeyakumar S.
<Mon. Not. R. Astron. Soc., 458, 3786-3794 (2016)>
=2016MNRAS.458.3786J 2016MNRAS.458.3786J (SIMBAD/NED BibCode)
ADC_Keywords: Radio sources ; QSOs ; Active gal. nuclei ; Redshifts
Keywords: radiation mechanisms: non-thermal - galaxies: active -
radio continuum: galaxies
Abstract:
The dependence of the turnover frequency on the linear size is
presented for a sample of Giga-hertz Peaked Spectrum and Compact Steep
Spectrum radio sources derived from complete samples. The dependence
of the luminosity of the emission at the peak frequency with the
linear size and the peak frequency is also presented for the galaxies
in the sample. The luminosity of the smaller sources evolve strongly
with the linear size. Optical depth effects have been included to the
3D model for the radio source of Kaiser to study the spectral
turnover. Using this model, the observed trend can be explained by
synchrotron self-absorption. The observed trend in the
peak-frequency-linear-size plane is not affected by the luminosity
evolution of the sources.
Description:
The sample of sources is derived from the complete samples of CSS and
GPS sources available in the literature.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 38 53 Sample of GPS galaxies
table2.dat 73 150 Sample of CSS and GPS sources
--------------------------------------------------------------------------------
See also:
J/A+AS/131/303 : GHz-Peaked-Spectrum radio sources (Stanghellini+ 1998)
J/A+A/363/887 : High frequency peakers. The bright sample (Dallacasa+, 2000)
J/A+A/369/380 : CSS/GPS radio sources VLA observations (Fanti+, 2001)
J/MNRAS/354/485 : Radio flux of 15-GHz 9C survey (Bolton+, 2004)
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 A10 --- Source Source name (JHHMM+DDMM)
12 A1 --- Sample Sample (G1)
14- 18 F5.3 --- z ?=- Redshift
19 A1 --- n_z [*] * for photometric redshift
21- 25 I5 MHz nupeak Observed peak frequency
27- 32 F6.4 Jy Speak Flux density at the peak frequency
34- 38 F5.2 [W/Hz/sr] log(Lpeak) Peak luminosity
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 A10 --- Source Source name (JHHMM+DDMM)
12- 14 A3 --- Sample Sample (G1)
16- 17 A2 --- Type [GQS EF] Type (1)
19- 25 F7.5 --- z ?=- Redshift
26 A1 --- n_z [*] * for photometric redshift
28 A1 --- l_LAS Limit flag on LAS
29- 35 F7.5 arcsec LAS ?=- Largest angular size
37- 41 I5 MHz nupeak Observed peak frequency
43- 48 F6.3 Jy Speak Flux density at the peak frequency
50- 58 F9.6 kpc LS ?=- Largest linear size
60- 64 F5.2 [W/Hz/sr] log(Lpeak) Peak luminosity
66- 73 A8 --- Ref References for LAS, nupeak and Speak (2)
--------------------------------------------------------------------------------
Note (1): Types as follows:
G = galaxy
Q = quasar
S = star
EF = empty field
Note (2): References as follows:
1 = O'Dea (1998PASP..110..493O 1998PASP..110..493O)
2 = Taylor & Vermeulen (1997ApJ...485L...9T 1997ApJ...485L...9T)
3 = Fanti et al. (2001, Cat. J/A+A/369/380)
4 = Peck & Taylor (2000ApJ...534...90P 2000ApJ...534...90P)
5 = Gugliucci et al. (2005ApJ...622..136G 2005ApJ...622..136G)
6 = Xu et al. (1995, Cat. J/ApJS/99/297)
7 = Taylor et al. (1994, Cat. J/ApJS/95/345)
8 = Taylor, Wrobel & Vermeulen (1998ApJ...498..619T 1998ApJ...498..619T)
9 = Snellen et al. (2000MNRAS.319..445S 2000MNRAS.319..445S)
10 = Edwards & Tingay (2004A&A...424...91E 2004A&A...424...91E)
11 = Henstock et al. (1995, Cat. J/ApJS/100/1)
12 = Kameno et al. (2001PASJ...53..169K 2001PASJ...53..169K)
13 = Tingay, Edwards & Tzioumis (2003MNRAS.346..327T 2003MNRAS.346..327T)
14 = Ojha et al. (2004, Cat. J/AJ/127/3609)
15 = Xiang et al. (2002A&A...385..768X 2002A&A...385..768X)
16 = Stanghellini, O'Dea & Murphy (1999A&AS..134..309S 1999A&AS..134..309S)
17 = Polatidis et al. (1995, Cat. J/ApJS/98/1)
18 = Kellermann et al. (1998AJ....115.1295K 1998AJ....115.1295K)
19 = Dallacasa et al. (2000, Cat. J/A+A/363/887)
20 = Stanghellini et al. (1998, Cat. J/A+AS/131/303)
21 = Dallacasa et al. (2002A&A...389..115D 2002A&A...389..115D)
22 = Dallacasa et al. (2002A&A...389..126D 2002A&A...389..126D)
23 = Tinti et al. (2005A&A...432...31T 2005A&A...432...31T)
--------------------------------------------------------------------------------
Global notes:
Note (G1): Samples as follows:
C = The Fanti et al. (1990A&A...231..333F 1990A&A...231..333F) sample of CSSs from the 3C
catalogue. The sources in this sample which do not follow the above
criteria are 3C43, 3C186, 3C190, 3C303.1, 3C305.1 and 3C455.
These sources have been removed from the current sample.
S = The Stanghellini et al. (1998, Cat. J/A+AS/131/303) sample of GPSs.
These two samples are well studied. The sources from these samples are
listed in OB97.
F = The B3-VLA sample of CSS sources (Fanti et al., 2001, Cat. J/A+A/369/380).
Information on the structure of the sources is available for most of
the sources (Dallacasa et al., 2002A&A...389..115D 2002A&A...389..115D, 2002A&A...389..126D 2002A&A...389..126D).
W = The sample of GPS galaxies from the WENSS catalogue (Snellen et al.,
2000MNRAS.319..445S 2000MNRAS.319..445S).
A = The sample of CSS and GPS sources in the southern sky
(Edwards & Tingay, 2004A&A...424...91E 2004A&A...424...91E). From this sample only those
galaxies listed in Tinti & De Zotti (2006A&A...445..889T 2006A&A...445..889T) are considered.
P = The sample of confirmed CSOs (Peck & Taylor, 2000ApJ...534...90P 2000ApJ...534...90P;
Gugliucci et al., 2005ApJ...622..136G 2005ApJ...622..136G) are also used for this study
irrespective of the liberal selection criteria on the spectral index,
since the CSOs are known to be young radio sources (Readhead et al.
1996ApJ...460..612R 1996ApJ...460..612R; Owsianik & Conway 1998A&A...337...69O 1998A&A...337...69O;
Gugliucci et al., 2005ApJ...622..136G 2005ApJ...622..136G). In this sample, some of the
sources show flat spectra (see below) making it difficult to estimate
the turnover frequencies. Such sources have been removed from the
current sample.
D = The galaxies from the sample of High-Frequency Peakers (Dallacasa et al.,
2000, Cat. J/A+A/363/887) listed in Tinti & De Zotti
(2006A&A...445..889T 2006A&A...445..889T).
H = The sample ofGPS galaxies from the Parkes half-Jy catalogue
(Snellen et al., 2002MNRAS.337..981S 2002MNRAS.337..981S).
B = The galaxies from the Bolton et al. (2004, Cat. J/MNRAS/354/485) sample of
GPS sources listed in Tinti & De Zotti (2006A&A...445..889T 2006A&A...445..889T).
L = The GPSs from the CORALZ sample (Snellen et al., 2004MNRAS.348..227S 2004MNRAS.348..227S).
--------------------------------------------------------------------------------
History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 17-Feb-2017