J/A+A/427/107 Polarization in BAL QSOs (Lamy+, 2004)
Polarization properties of broad absorption line QSOs : new statistical clues.
Lamy H., Hutsemekers D.
<Astron. Astrophys. 427, 107 (2004)>
=2004A&A...427..107L 2004A&A...427..107L
ADC_Keywords: QSOs ; Polarization
Keywords: galaxies: quasars: general - galaxies: quasars: absorption lines -
polarization
Abstract:
We report the results of several statistical tests performed on a
large sample of 139 broad absorption line (BAL) QSOs with good quality
optical spectra and/or optical polarization data. Correlations between
ten optical indices and the polarization degree p0 are
systematically searched for.
Description:
Table 1 contains optical properties of 139 BAL QSOs. It is essentially
a compilation of 93 BAL QSOs coming from large polarization surveys.
In addition, we also consider 46 BAL QSOs with good quality optical
(UV rest-frame) spectra but no polarization data.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 177 139 Optical measurements for the BAL QSO sample
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See also:
J/A+AS/142/451 : Optical Polarization of 47 QSOs (Lamy+, 2000)
J/A+A/340/371 : Quasar polarization (Hutsemekers+ 1998)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Name Quasar name
13- 14 I2 h RAh Right ascension (J2000)
16- 17 I2 min RAm Right ascension (J2000)
19- 23 F5.2 s RAs Right ascension (J2000)
26 A1 --- DE- Declination sign (J2000)
27- 28 I2 deg DEd Declination (J2000)
30- 31 I2 arcmin DEm Declination (J2000)
33- 36 F4.1 arcsec DEs ? Declination (J2000)
40- 43 F4.2 --- z Redshift
48 I1 --- Type BAL QSO type (1)
53- 56 F4.2 % Pol ? Polarization degree
61- 64 F4.2 % e_Pol ? Uncertainty of polarization degree
69- 72 F4.2 % Pol0 ? Debiased polarization degree
77 I1 --- r_Pol ? References for polarization data (2)
81- 85 I5 km/s BI ? Balnicity index (3)
89- 93 F5.2 --- DI ? Detachment index (4)
98-101 I4 km/s HWHM(CIV) ? CIV Half Width at Half Maximum
106-109 I4 km/s HWHM([CIII]) ? [CIII] Half Width at Half Maximum
114-117 F4.1 0.1nm HREW(CIV) ? CIV Rest Equivalent Width (5)
122-125 F4.1 0.1nm REW([CIII]) ? [CIII] Rest Equivalent Width
130-134 F5.2 0.1nm REW(FeII2400) ? FeII 2400 Rest Equivalent Width
138-142 F5.2 0.1nm REW(FeII2070) ? FeII 2070 Rest Equivalent Width
146-150 F5.2 --- alphaB ? Continuum slope B
154-158 I5 km/s Vmax ? Maximum velocity in the CIV trough
163-165 I3 --- Ref2 References for optical indices (6)
170-175 F6.2 mag BMAG ? B absolute Magnitude
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Note (1): Object Type:
2 = HIBAL QSOs
3 = Strong LIBAL QSOs
4 = Weak LIBAL QSOs
5 = Marginal LIBAL QSOs
6 = Unclassified BAL QSO.
Note (2): Reference for polarization data:
1 = Hutsemekers et al., 1998, Cat. J/A+A/340/371, Paper I
2 = Lamy & Hutsemekers, 2000, Cat. J/A+AS/142/451
3 = Schmidt & Hines, 1999ApJ...512..125S 1999ApJ...512..125S
4 = Ogle et al., 1999ApJS..125....1O 1999ApJS..125....1O (Keck observations)
5 = Ogle et al., 1999ApJS..125....1O 1999ApJS..125....1O (Palomar observations)
6 = Brotherton et al., 2002AJ....124.2575B 2002AJ....124.2575B
7 = Sluse et al., 2004, A&A, in prep.
8 = Hutsemekers et al., 2004, in prep.
Note (3): The Balnicity index is a modified velocity equivalent width
of the C IV BAL.
Note (4): The Detachment index measure the onset velocity of the
strongest C IV BAL trough in units of the adjacent emission line
half-width, that is the degree of detachment of the absorption line
relative to the emission one.
Note (5): Only the red half of the CIV absorption line is considered
in the measurement of the Equivalent Width.
Note (6): Reference for the spectra from which indices are measured.
They are encoded with 3 digits: each non-zero digit designates
a specific reference:
1: Hutsemekers et al., 1998, Cat. J/A+A/340/371, Paper I
2: Hutsemekers & Lamy, 2000A&A...358..835H 2000A&A...358..835H, Paper II
3: Weymann et al., 1991ApJ...373...23W 1991ApJ...373...23W
4: Becker et al. 2000ApJ...538...72B 2000ApJ...538...72B, 2001, Cat. J/ApJS/135/227
5: Menou et al., 2001ApJ...561..645M 2001ApJ...561..645M
6: Korista et al., 1993ApJS...88..357K 1993ApJS...88..357K
7: Ogle et al., 1999ApJS..125....1O 1999ApJS..125....1O
8: spectra scanned from Large Bright Quasar Survey (LBQS)
9: Brotherton et al., 2002AJ....124.2575B 2002AJ....124.2575B
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Acknowledgements: Herve Lamy
History:
* 02-Sep-2004: Original version
* 22-Feb-2005: Declination of Quasar B0842+3431
corrected from +12 19 44.0 to +34 20 43.9
(End) Herve Lamy [BIRA-IASB], Patricia Vannier [CDS] 02-Sep-2004