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J/A+AS/123/219 The B3-VLA Quasar Sample (Vigotti+ 1997)
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The B3-VLA quasar sample
Vigotti M., Vettolani G., Merighi R., Lahulla J., Pedani M.
<Astron. Astrophys. Suppl. Ser. 123, 219 (1997)>
=1997A&AS..123..219V (SIMBAD/NED BibCode)
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ADC_Keywords: QSOs ; Redshifts
Keywords: galaxies: active, quasars: general, radio continuum: general
Abstract:
A new low frequency radio selected Sample of 125 Quasars complete down
to 100mJy at 408MHz is presented in this paper. The sample is a part
of the B3-VLA sample: 1050 radiosources selected from the B3 catalogue
at 408MHz and observed at the VLA (1465MHz, C and A configurations).
Out of the 352 sources, identified on the POSS-I down to m_r_~20.0,
172 are quasar candidates. In this paper we give the final assessment
of the quasar sample from spectroscopic observations of the
candidates. The final complete quasar sample consists of 125 objects.
Furthermore 3 Bl Lac objects have been identified and two Bl Lac
candidates.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table4 76 125 The B3-VLA Quasars Complete Sample
table5 76 216 Lines identifications and Redshifts
table6 51 43 Quasar Candidates with Different
Spectroscopic Identification.
refs 54 32 References
fig1.ps 102 467 Distribution of the radio-optical displacements
for 57 unresolved quasars
fig2.ps 102 612 B3 magnitudes versus APM magnitudes
fig3.ps 102 5166 Magnitudes distributions for different B3-VLA
flux interval and 3CR sample
fig4.ps 102 8856 Some representative spectra for the quasars in
the B3-VLA sample
fig6.ps 102 293 Redshift distribution for the quasars in the
B3-VLA sample
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See also:
VIII/37 : The Third Bologna Survey (B3) (Ficarra+ 1985)
Byte-by-byte Description of file: table4
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Bytes Format Units Label Explanations
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1 I1 --- Sample Sample number
3- 10 A8 --- B3 B3 name
11 A1 --- m_B3 Multiplicity index on B3
13- 14 I2 h RAh Rigth ascension (B1950)
16- 17 I2 min RAm Rigth ascension (B1950)
19- 23 F5.2 s RAs Rigth ascension (B1950)
25 A1 --- DE- Declination sign
26- 27 I2 deg DEd Declination (B1950)
29- 30 I2 arcmin DEm Declination (B1950)
32- 35 F4.1 arcsec DEs Declination (B1950)
37- 41 F5.2 Jy F408MHz Flux at 408MHz
43- 47 F5.2 --- Alpha Spectral index. See Note (1)
49- 52 F4.1 --- Redmag Red Magnitude
54- 58 F5.3 --- z ? Redshift (blank=unknown)
60- 72 A13 --- r_z References (see refs file)
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Note (1): Flux proportional to : nu ** (- alpha)
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Byte-by-byte Description of file: table5
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Bytes Format Units Label Explanations
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1- 8 A8 --- B3 B3 name
9 A1 --- m_B3 Multiplicity index on B3
11 A1 --- ID [GNB] Original identification (1)
14- 27 A14 --- Line Spectral line
28 A1 --- l_LamObs [~] Limit flag on LamObs
29- 32 I4 0.1nm LamObs ? Observed wavelength
35- 38 I4 0.1nm LamRest ? Rest wavelength
41- 45 F5.3 --- zline ? Line redshift
48- 62 A15 --- NewId New identification.
64- 68 F5.3 --- z ? Average redshift
70- 74 F5.3 --- e_z ? Redshift uncertainty
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Note (1): B : Blue starlike objects
N : Red or Neutral color objects
G : galaxy
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Byte-by-byte Description of file: table6
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Bytes Format Units Label Explanations
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1- 8 A8 --- B3 B3 name
9 A1 --- m_B3 Multiplicity index on B3
12 A1 --- ID Original identification
14- 17 F4.1 --- Redmag Red magnitude
20- 34 A15 --- IDnew New identification
36- 48 A13 --- r_Redmag References (see refs file)
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Byte-by-byte Description of file: refs
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Bytes Format Units Label Explanations
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1- 13 A13 --- Ref Reference code
18- 36 A19 --- BibCode BibCode
38- 54 A17 --- Cat CDS catalogue number or priv. comm.
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Acknowledgements: Marco Pedani <PEDANI@astbo1.bo.cnr.it>
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(End) Patricia Bauer [CDS] 23-May-1997