J/AZh/87/739 Steep and ultra-steep spectra RC sources (Parijskij+, 2010)
Spectroscopy of "Big Trio" objects using the "Scorpio" spectrograph of the
6-m telescope of the Special Astrophysical Observatory.
Parijskij Yu.N., Kopylov A.I., Temirova A.V., Soboleva N.S.,
Zhelenkova O.P., Verkhodanov O.V., Goss W.M., Fathkullin T.A.
<Astron. Zh. 87, 739 (2010)>
=2010AZh....87..739P 2010AZh....87..739P
=2010ARep...54..675P 2010ARep...54..675P
ADC_Keywords: Radio sources ; Galaxies, radio ; QSOs ; Magnitudes ; Morphology
Abstract:
We present the results of spectroscopy of 71 objects with steep and
ultra-steep spectra (alpha←0.9, S∝nualpha) from the "Big
Trio" (RATAN-600-VLA-BTA) project, performed with the "Scorpio"
spectrograph on the 6-m telescope of the Special Astrophysical
Observatory (Russian Academy of Sciences). Redshifts were determined
for these objects. We also present several other parameters of the
sources, such as their R magnitudes, maximum radio sizes in seconds of
arc, flux densities at 500, 1425, and 3940MHz, radio luminosities at
500 and 3940MHz, and morphology. Of the total number of radio galaxies
studied, four have redshifts 1≤z<2, three have 2≤z<3, one has
3≤z<4, and one has z=4.51. Thirteen sources have redshifts 0.7<z<1
and 15 have 0.2<z<0.7. Of all the quasars studied, five have redshifts
0.7<z<1, seven have 1≤z<2, four have 2≤z<3, and one has z=3.57. We
did not detect any spectral lines for 17 objects.
Description:
The data obtained from our observations with the "Scorpio"
spectrograph mounted on the 6-m SAO telescope are collected in four
tables. In total, we studied 71 objects with steep and ultra-steep
spectra from the RC catalog. These include 17 quasars, with the other
objects being radio galaxies.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 130 22 Radio galaxies with z>0.7
table2.dat 130 15 Radio galaxies with z<0.7
table3.dat 128 17 Quasars
table4.dat 131 17 Radio galaxies with no emission lines detected
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See also:
VIII/33 : Spectral characteristics of RATAN (RC) Catalog (Bursov+ 1989)
J/A+AS/87/1 : RATAN-600 7.6 cm catalog of radio sources (Parijskij+ 1991)
Byte-by-byte Description of file: table[123].dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Seq Sequential number
4- 13 A10 --- RCJ RCJ designation (HHMM+DDMMA)
15- 16 I2 h RAh Right ascension (J2000)
18- 19 I2 min RAm Right ascension (J2000)
21- 25 F5.2 s RAs Right ascension (J2000)
27 A1 --- DE- Declination sign (J2000)
28- 29 I2 deg DEd Declination (J2000)
31- 32 I2 arcmin DEm Declination (J2000)
34- 37 F4.1 arcsec DEs Declination (J2000)
39 A1 --- l_Rmag Limit flag on Rmag
40- 43 F4.1 mag Rmag R magnitude
45- 49 F5.3 --- zsp Spectroscopic redshift
51- 55 F5.1 arcsec LAS Largest angular size
57- 61 F5.1 mJy S3.94 Flux density at 3940MHz
63- 65 I3 mJy S1.4 Flux density at 1400MHz
67- 70 I4 mJy S0.5 Flux density at 500MHz
72- 77 F6.3 --- SI3.94 Spectral index at 3940MHz
79- 84 F6.3 --- SI0.5 Spectral index at 500MHz
86- 93 E8.3 10+7W L3.94 Luminosity at 3940MHz
95-102 E8.3 10+7W L0.50 Luminosity at 500MHz
104-116 A13 --- Morph Morphology (G1)
118-130 A13 --- Note Note (2)
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Note (2): Notes as follows:
n = presence of narrow emission lines in the spectrum
B = presence of broad emission lines in the spectrum
abs = presence of absorption lines in the spectrum
BLRG = broad-line radio galaxy
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Seq Sequential number
4- 13 A10 --- RCJ RCJ designation (HHMM+DDMMA)
15- 16 I2 h RAh Right ascension (J2000)
18- 19 I2 min RAm Right ascension (J2000)
21- 25 F5.2 s RAs Right ascension (J2000)
27 A1 --- DE- Declination sign (J2000)
28- 29 I2 deg DEd Declination (J2000)
31- 32 I2 arcmin DEm Declination (J2000)
34- 37 F4.1 arcsec DEs Declination (J2000)
39 A1 --- l_Rmag [>] Limit flag on Rmag
40- 43 F4.1 mag Rmag R magnitude
44 A1 --- u_Rmag [)] Uncertainty flag on Rmag
46 A1 --- l_LAS Limit flag on LAS
47- 51 F5.2 arcsec LAS Largest angular size
53- 55 I3 mJy S3.94 Flux density ar 3940MHz
57- 62 F6.3 --- SI3.94 Spectral index at 3940MHz
64- 69 F6.3 --- SI0.5 Spectral index at 500MHz
71- 85 A15 --- Morph Morphology (G1)
87-113 A27 s ExpTime Exposure time(s)
115-131 A17 --- Note Note
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Global notes:
Note (G1): Morphology code, as follows:
P = point-like object
D = double source
T = triple source
C = presence of a core
BC = presence of a bright core
WC = presence of a weak core
CL = core and lobe structure (distinct components)
CJ = core and jet structure (the core not distinguishable from the
extended jet)
FRI/FRII = object of Fanaroff-Riley types I/II
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 17-Sep-2010