J/AJ/122/503 SDSS u*g*r*i*z* photometry and redshift of QSOs (Anderson+, 2001)
High-redshift quasars found in Sloan Digital Sky Survey commissioning data.
VI. Sloan Digital Sky Survey spectrograph observations.
Anderson S.F., Fan X., Richards G.T., Schneider D.P., Strauss M.A.,
Vanden Berk D.E., Gunn J.E., Knapp G.R., Schlegel D., Voges W., Yanny B.,
Bahcall N.A., Bernardi M., Brinkmann J., Brunner R., Csabai I., Doi M.,
Fukugita M., Hennessy G.S., Ivezic Z., Kunszt P.Z., Lamb D.Q., Loveday J.,
Lupton R.H., McKay T.A., Munn J.A., Nichol R.C., Szokoly G.P., York D.G.
<Astron. J. 122, 503 (2001)>
=2001AJ....122..503A 2001AJ....122..503A
ADC_Keywords: QSOs ; Redshifts ; Photometry
Keywords: early universe - quasars: general
Abstract:
We present data for over 100 high-redshift quasars found in ∼700deg2
by the Sloan Digital Sky Survey (SDSS), using automated selection
algorithms applied to SDSS imaging data and with spectroscopic
confirmation obtained during routine spectroscopic observations by the
Sloan 2.5 m telescope. The SDSS spectra cover the wavelength range
3900-9200ÅE at a spectral resolution of 1800 and have been obtained
for 116 quasars with redshifts greater than 3.94; 92 of these objects
were previously uncatalogued, significantly increasing the current
list of published z>4 quasars. The paper also reports observations of
seven additional new z>4 quasars; all were selected from the SDSS
imaging survey and spectroscopically confirmed with observations by
the Apache Point Observatory's 3.5 m telescope or the Hobby-Eberly
Telescope.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 88 123 Positions and photometry of SDSS high-redshift
quasars
table2.dat 38 9 Radio-detected quasars in sample
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See also:
J/ApJS/123/377 : u*g*r*i*z* Photometry of stars, galaxies, QSOs (Newberg+ 1999)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 19 A19 --- SDSSp Quasar designation, based on J2000.0 positions
20 A1 -- n_SDSSp [*] *: probable BAL quasar
21 A1 -- f_SDSSp [r] detected in radio (see table2)
22- 25 F4.2 --- z Redshift
27- 30 F4.2 --- e_z rms uncertainty on z
32- 36 F5.2 mag u*mag u* magnitude (1)
38- 41 F4.2 mag e_u*mag rms uncertainty on u*mag
43- 47 F5.2 mag g*mag g* magnitude (1)
49- 52 F4.2 mag e_g*mag rms uncertainty on g*mag
54- 58 F5.2 mag r*mag r* magnitude (1)
60- 63 F4.2 mag e_r*mag rms uncertainty on r*mag
65- 69 F5.2 mag i*mag i* magnitude (1)
71- 74 F4.2 mag e_i*mag rms uncertainty on i*mag
76- 80 F5.2 mag z*mag z* magnitude (1)
82- 85 F4.2 mag e_z*mag rms uncertainty on z*mag
87- 88 I2 --- Note ? Notes (2)
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Note (1): Photometry is reported in terms of asinh magnitudes (see Lupton
et al. 1999AJ....118.1406L 1999AJ....118.1406L for details). In this system, zero flux
corresponds to 24.6, 25.1, 24.8, 24.4, and 22.8 in u*, g*,r*, i*, and
z*, respectively.
Note (2): Notes:
1: SDSS quasar (Fan et al., 2001AJ....121...31F 2001AJ....121...31F)
2: spectrum obtained with Hobby-Eberly Telescope
3: PSS quasar (Kennefick et al., 1995AJ....110...78K 1995AJ....110...78K)
4: BRI quasar (finding chart in Smith et al., 1994AJ....108.1147S 1994AJ....108.1147S)
5: spectrum obtained with APO 3.5 m telescope
6: unpublished PSS quasar; see http://astro.caltech.edu/~george/z4.qsos
7: SDSS quasar (Fan et al., 1999AJ....118....1F 1999AJ....118....1F)
8: BRI quasar (finding chart in Smith et al., 1994AJ....107...24S 1994AJ....107...24S)
9: SDSS quasar (Schneider et al., 2001AJ....121.1232S 2001AJ....121.1232S)
10: SDSS quasar (Fan et al., 2000AJ....119....1F 2000AJ....119....1F)
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 19 A19 --- SDSSp Quasar designation, based on J2000.0 positions
20 A1 --- n_SDSSp [b] b: previously known radio quasar
23- 26 F4.2 --- z Redshift
28- 32 F5.2 mJy F20cm Radio flux at 20cm (1.5GHz)
34- 38 A5 --- Source FIRST or NVSS source
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History:
From electronic version of the journal
In table 2, 2 SDSSp names were corrected to adjust to their name in table1:
J102043.82+000105.8 (originally J102043.83+000105.8) and
J105320.43-001649.6 (originally J105320.43-001649.2)
References:
Fan et al., Paper I 1999AJ....118....1F 1999AJ....118....1F
Fan et al., Paper II 2000AJ....119....1F 2000AJ....119....1F
Fan et al., Paper III 2001AJ....121...31F 2001AJ....121...31F
Fan et al., Paper IV 2001AJ....121...54F 2001AJ....121...54F
Schneider et al., Paper V 2001AJ....121.1232S 2001AJ....121.1232S
(End) James Marcout, Patricia Bauer [CDS] 28-Sep-2001