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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
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:
FileName Lrecl Records Explanations
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
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
Bytes Format Units Label Explanations
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)
Note (1): Photometry is reported in terms of asinh magnitudes (see Lupton et al. 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) 2: spectrum obtained with Hobby-Eberly Telescope 3: PSS quasar (Kennefick et al., 1995AJ....110...78K) 4: BRI quasar (finding chart in Smith et al., 1994AJ....108.1147S) 5: spectrum obtained with APO 3.5 m telescope 6: unpublished PSS quasar; see 7: SDSS quasar (Fan et al., 1999AJ....118....1F) 8: BRI quasar (finding chart in Smith et al., 1994AJ....107...24S) 9: SDSS quasar (Schneider et al., 2001AJ....121.1232S) 10: SDSS quasar (Fan et al., 2000AJ....119....1F)
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
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
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 Fan et al., Paper II 2000AJ....119....1F Fan et al., Paper III 2001AJ....121...31F Fan et al., Paper IV 2001AJ....121...54F Schneider et al., Paper V 2001AJ....121.1232S
(End) James Marcout, Patricia Bauer [CDS] 28-Sep-2001
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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