J/MNRAS/342/575 BeppoSAX HELLAS survey. VI. (Ciliegi+, 2003)
The BeppoSAX High Energy Large Area Survey (HELLAS).
VI. The radio properties.
Ciliegi P., Vignali C., Comastri A., Fiore F., La Franca F., Perola G.C.
<Mon. Not. R. Astron. Soc. 342, 575 (2003)>
=2003MNRAS.342..575C 2003MNRAS.342..575C
ADC_Keywords: QSOs ; Radio sources ; X-ray sources
Mission_Name: BeppoSAX
Keywords: surveys - quasars: general - radio continuum: galaxies
Abstract:
We present results of a complete radio follow-up obtained with the VLA
and ATCA radio telescopes down to a 6-cm flux limit of about 0.3 mJy
(3σ) of all the 147 X-ray sources detected in the BeppoSAX
HELLAS survey. We found 53 X-ray/radio likely associations,
corresponding to about one-third of the X-ray sample. Using the
two-point spectral index αro=0.35 we divided all the HELLAS
X-ray sources into radio-quiet and radio-loud. We have 26 sources
classified as radio-loud objects, corresponding to 18 per cent of the
HELLAS sample. In agreement with previous results, the identified
radio-loud sources are associated mainly with Type 1 active galactic
nuclei (AGNs) with L5-10kev≳1044erg/s, while all the identified
Type 2 AGNs and emission-line galaxies are radio-quiet objects with
L5-10kev≲1044erg/s.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 165 147 X-ray, optical and radio properties of the
HELLAS sample
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See also:
J/MNRAS/327/771 : BeppoSAX HELLAS survey. II. (Fiore+, 2001)
J/A+A/370/900 : BeppoSAX HELLAS survey. IV (Vignali+, 2001)
J/ApJ/570/100 : BeppoSAX HELLAS survey. V. (La Franca+, 2002)
J/A+A/409/79 : HELLAS2XMM survey. IV. (Fiore+, 2003)
http://argos.mporzio.astro.it/hellas/ :
The High Energy Large Area Survey (HELLAS) Home Page
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 2 I2 h RAh BepposSAX right ascension (J2000)
4- 5 I2 min RAm BepposSAX right ascension (J2000)
7- 10 F4.1 s RAs BepposSAX right ascension (J2000)
12 A1 --- DE- BepposSAX declination sign (J2000)
13- 14 I2 deg DEd BepposSAX declination (J2000)
16- 17 I2 arcmin DEm BepposSAX declination (J2000)
19- 20 I2 arcsec DEs BepposSAX declination (J2000)
22- 25 F4.1 arcmin OffX Offset in the BeppoSAX field
27- 31 F5.2 10-16W/m2 FX 5-10keV X-ray flux (in 10-13erg/cm2/s)
33 A1 --- l_Rmag Limit flag on Rmag
34- 38 F5.2 mag Rmag ? R-band magnitude, from La Franca et al.,
Cat. J/ApJ/570/100, if not otherwise
specified
39 A1 --- r_Rmag [alu] Reference for Rmag (1)
41 I1 --- SpId [0/6]? Spectroscopic identification (2)
42 A1 --- r_SpId [l] l: SpId from Lehmann et al.,
2000A&A...354...35L 2000A&A...354...35L
44- 48 F5.3 --- z ? Redshift from La Franca et al.,
Cat. J/ApJ/570/100
49 A1 --- n_z [l] l: Redshift from Lehmann et al.,
2000A&A...354...35L 2000A&A...354...35L
50 A1 --- l_F3.6GHz Limit flag on F3.6GHz
51- 56 F6.2 mJy F3.6GHz ? Flux density at 3.6GHz
58- 61 F4.2 mJy e_F3.6GHz ? rms uncertainty on F3.6GHz
62 A1 --- n_F3.6GHz [n] Note on F3.6GHz
64 A1 --- l_F5GHz Limit flag on F5GHz
65- 71 F7.2 mJy F5GHz ? Flux density at 5GHz (6cm)
from NVSS, version 2.17
73- 78 F6.2 mJy e_F5GHz ? rms uncertainty on F5GHz
79 A1 --- n_F5GHz [n] n: not from NVSS, version 2.17
81 A1 --- l_F1.4GHz Limit flag on F1.4GHz
82- 88 F7.2 mJy F1.4GHz ? Flux density at 1.4GHz (20cm),
from NVSS, version 2.17
90- 94 F5.2 mJy e_F1.4GHz ? rms uncertainty on F1.4GHz
95 A1 --- n_F1.4GHz [n] n: not from NVSS, version 2.17
97 A1 --- l_Sp-Index Limit flag on Sp-Index
98-102 F5.2 --- Sp-Index ? Radio spectral index calculated using the
available frequencies (mainly 6 and 20cm)
104-105 I2 h RARh ? Radio right ascension (J2000)
107-108 I2 min RARm ? Radio right ascension (J2000)
110-114 F5.2 s RARs ? Radio right ascension (J2000)
116 A1 --- DER- ? Radio declination sign (J2000)
117-118 I2 deg DERd ? Radio declination (J2000)
120-121 I2 arcmin DERm ? Radio declination (J2000)
123-127 F5.2 arcsec DERs ? Radio declination (J2000)
129-133 F5.1 arcsec DXR ? Distance between X-ray and radio positions
135-139 F5.2 10-2 PXR ? Probability of a random association
142-144 F3.1 arcsec DRO ? Distance between radio and optical
positions
146-151 F6.2 10-6 PRO ? Probability of a random association
153 A1 --- l_alphaRO ? Limit flag on alphaRO
154-158 F5.2 --- alphaRO ? Two-point radio-to-optical
spectral index (3)
160 A1 --- l_alphaOX ? Limit flag on alphaOX
161-165 F5.2 --- alphaOX ? Two-point optical-to-X-ray
spectral index (3)
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Note (1): References for R magnitude as follows:
a = Magnitude from the APM (Cat. I/267) catalogue
l = Magnitude from Lehmann et al., 2000A&A...354...35L 2000A&A...354...35L
u = Magnitude from the USNO (Cat. I/252) catalogue
Note (2): Spectroscopic identification as follows:
1 = Type 1 AGN
2 = Type 2 AGN
3 = BL Lac
4 = Cluster
5 = ELG
6 = Radio galaxy
Note (3): Definitions of the two-point spectral indices:
alphaRO = log(F5GHz/F25000)/5.38
alphaOX = log(F2500/F2keV)/2.065
where F5GHz is the radio flux at 6cm,
F2500 the optical flux at 2500Å and
F2keV the monochromatic X-ray flux at 2keV.
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History:
From electronic version of the journal
References:
Fiore et al., Paper I 1999MNRAS.306L..55F 1999MNRAS.306L..55F
Fiore et al., Paper II 2001MNRAS.327..771F 2001MNRAS.327..771F, Cat. J/MNRAS/327/771
Comastri et al., Paper III 2001MNRAS.327..781C 2001MNRAS.327..781C
Vignali et al., Paper IV 2001A&A...370..900V 2001A&A...370..900V, Cat. J/A+A/370/900
La Franca et al., Paper V 2002ApJ...570..100L 2002ApJ...570..100L, Cat. J/ApJ/570/100
(End) James Marcout, Patricia Bauer [CDS] 11-Sep-2003