Table A.2
Parameters associated with each XQ-100 object in the public repository.
| Column | Name | Format | Description |
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| 1 | OBJECT | STRING | target designation |
| 2 | RA_J2000 | DOUBLE | target right ascension (deg, J2000.0) |
| 3 | DEC_J2000 | DOUBLE | target declination (deg, J2000.0) |
| 4 | Z_QSO | FLOAT | quasar emission redshift (PCA) |
| 5 | N_OBS | SHORT | number of observing epochs |
| 6 | MJD_OBS | FLOAT | start of observations (d) |
| 7 | MJD_OBS_1 | FLOAT | start of observations (1st exec. only) (d) |
| 8 | MJD_OBS_2 | FLOAT | start of observations (2nd exec. only) (d) |
| 9 | MJD_OBS_3 | FLOAT | start of observations (3rd exec. only) (d) |
| 10 | MJD_END | FLOAT | end of observations (d) |
| 11 | MJD_END_1 | FLOAT | end of observations (1st exec. only) (d) |
| 12 | MJD_END_2 | FLOAT | end of observations (2nd exec. only) (d) |
| 13 | MJD_END_2 | FLOAT | end of observations (3rd exec. only) (d) |
| 14 | SEEING_MIN | FLOAT | min. seeing from ESO.TEL.IA.FWHM keyw. |
| 15 | SEEING_MIN_1 | FLOAT | min. seeing from ESO.TEL.IA.FWHM keyw. (1st exec. only) |
| 16 | SEEING_MIN_2 | FLOAT | min. seeing from ESO.TEL.IA.FWHM keyw. (2nd exec. only) |
| 17 | SEEING_MIN_3 | FLOAT | min. seeing from ESO.TEL.IA.FWHM keyw. (3rd exec. only) |
| 18 | SEEING_MAX | FLOAT | max. seeing measured at the start or at the end of integrations |
| 19 | SEEING_MAX_1 | FLOAT | max. seeing from ESO.TEL.IA.FWHM keyw. (1st exec. only) |
| 20 | SEEING_MAX_2 | FLOAT | max. seeing from ESO.TEL.IA.FWHM keyw. (2nd exec. only) |
| 21 | SEEING_MAX_3 | FLOAT | max. seeing from ESO.TEL.IA.FWHM keyw. (3rd exec. only) |
| 22 | SNR_170 | FLOAT | S/N in a ±1 nm window at 170 nm (rest-frame) |
| 23 | SNR_170_1 | FLOAT | S/N in a ±1 nm window at 170 nm (1st exec. only) (rest-frame) |
| 24 | SNR_170_2 | FLOAT | S/N in a ±1 nm window at 170 nm (2nd exec. only) (rest-frame) |
| 25 | SNR_170_3 | FLOAT | S/N in a ±1 nm window at 170 nm (3rd exec. only) (rest-frame) |
| 26 | SNR_300 | FLOAT | S/N in a ±1 nm window at 300 nm (rest-frame) |
| 27 | SNR_300_1 | FLOAT | S/N in a ±1 nm window at 300 nm (1st exec. only) (rest-frame) |
| 28 | SNR_300_2 | FLOAT | S/N in a ±1 nm window at 300 nm (2nd exec. only) (rest-frame) |
| 29 | SNR_300_3 | FLOAT | S/N in a ±1 nm window at 300 nm (3rd exec. only) (rest-frame) |
| 30 | SNR_360 | FLOAT | S/N in a ±1 nm window at 360 nm (rest-frame) |
| 31 | SNR_360_1 | FLOAT | S/N in a ±1 nm window at 360 nm (1st exec. only) (rest-frame) |
| 32 | SNR_360_2 | FLOAT | S/N in a ±1 nm window at 360 nm (2nd exec. only) (rest-frame) |
| 33 | SNR_360_3 | FLOAT | S/N in a ±1 nm window at 360 nm (3rd exec. only) (rest-frame) |
| 34 | RED_QUAL | SHORT | reduction quality parameter (see above) |
| 35 | RED_QUAL_1 | SHORT | reduction quality parameter (1st exec. only) |
| 36 | RED_QUAL_2 | SHORT | reduction quality parameter (2nd exec. only) |
| 37 | RED_QUAL_3 | SHORT | reduction quality parameter (3rd exec. only) |
| 38 | HR_FLAG | SHORT | high-resolution spectrum flag |
| 39 | JOHNSON_MAG_B | FLOAT | B magnitudes in Johnson system |
| 40 | JOHNSON_MAG_V | FLOAT | V magnitudes in Johnson system |
| 41 | JOHNSON_MAG_R | FLOAT | R magnitudes in Johnson system |
| 42 | SDSS_PSF_MAG_u | DOUBLE | SDSS PSF u magnitudes |
| 43 | SDSS_ERR_PSF_MAG_u | DOUBLE | Error on SDSS PSF u magnitudes |
| 44 | SDSS_PSF_MAG_g | DOUBLE | SDSS PSF g magnitudes |
| 45 | SDSS_ERR_PSF_MAG_g | DOUBLE | Error on SDSS PSF g magnitudes |
| 46 | SDSS_PSF_MAG_r | DOUBLE | SDSS PSF r magnitudes |
| 47 | SDSS_ERR_PSF_MAG_r | DOUBLE | Error on SDSS PSF r magnitudes |
| 48 | SDSS_PSF_MAG_i | DOUBLE | SDSS PSF i magnitudes |
| 49 | SDSS_ERR_PSF_MAG_i | DOUBLE | Error on SDSS PSF i magnitudes |
| 50 | SDSS_PSF_MAG_z | DOUBLE | SDSS PSF z magnitudes |
| 51 | SDSS_ERR_PSF_MAG_z | DOUBLE | Error on SDSS PSF z magnitudes |
| 52 | DR7Q_MATCH | SHORT | match in DR7Q spectroscopy |
| 53 | DR7Q_LATE | INT32 | DR7Q plate number |
| 54 | DR7Q_MJD | INT32 | DR7Q spectroscopic MJD (d) |
| 55 | DR7Q_FIBER | INT32 | DR7Q fiber number (d) |
| 56 | DR12Q_MATCH | SHORT | match in DR12Q spectroscopy |
| 57 | DR12Q_N | INT32 | number of spectroscopic observations in DR12Q |
| 58 | DR12Q_PLATE_1 | INT32 | DR12Q plate number (1st observation) |
| 59 | DR12Q_MJD_1 | INT32 | DR12Q spectroscopic MJD (1st observation) (d) |
| 60 | DR12Q_FIBER_1 | INT32 | DR12Q fiber number (1st observation) (d) |
| 61 | DR12Q_PLATE_2 | INT32 | DR12Q plate number (2nd observation) |
| 62 | DR12Q_MJD_2 | INT32 | DR12Q spectroscopic MJD (2nd observation) (d) |
| 63 | DR12Q_FIBER_2 | INT32 | DR12Q fiber number (2nd observation) (d) |
| 64 | FIRST_MATCH | INT32 | match in FIRST |
| 65 | FIRST_FLUX | DOUBLE | FIRST flux at 20 cm (mJy) |
| 66 | FIRST_SNR | DOUBLE | S/N of FIRST detection |
| 67 | TMASS_MATCH | SHORT | matched in 2MASS |
| 68 | TMASS_MAG_J | DOUBLE | 2MASS J magnitudes |
| 69 | TMASS_ERR_MAG_J | DOUBLE | error on 2MASS J magnitudes |
| 70 | TMASS_SNR_J | DOUBLE | S/N of 2MASS detection in J bands |
| 71 | TMASS_MAG_H | DOUBLE | 2MASS H magnitudes |
| 72 | TMASS_ERR_MAG_H | DOUBLE | error on 2MASS H magnitudes |
| 73 | TMASS_SNR_H | DOUBLE | S/N of 2MASS detection in H bands |
| 74 | TMASS_MAG_K | DOUBLE | 2MASS K magnitudes |
| 75 | TMASS_ERR_MAG_K | DOUBLE | error on 2MASS K magnitudes |
| 76 | TMASS_SNR_K | DOUBLE | S/N of 2MASS detection in K bands |
| 77 | TMASS_RD_FLAG | STRING | 2MASS rd flag |
| 78 | WISE_MATCH | SHORT | match in WISE |
| 79 | WISE_MAG_w1 | DOUBLE | WISE w1 magnitudes |
| 80 | WISE_ERR_MAG_w1 | DOUBLE | error on WISE w1 magnitudes |
| 81 | WISE_SNR_w1 | DOUBLE | S/N of WISE detection in w1 bands |
| 82 | WISE_RCHI2_w1 | DOUBLE | WISE reduced chi-squared in w1 bands |
| 83 | WISE_MAG_w2 | DOUBLE | WISE w2 magnitudes |
| 84 | WISE_ERR_MAG_w2 | DOUBLE | error on WISE w2 magnitudes |
| 85 | WISE_SNR_w2 | DOUBLE | S/N of WISE detection in w2 bands |
| 86 | WISE_RCHI2_w2 | DOUBLE | WISE reduced chi-squared in w2 bands |
| 87 | WISE_MAG_w3 | DOUBLE | WISE w3 magnitudes |
| 88 | WISE_ERR_MAG_w3 | DOUBLE | error on WISE w3 magnitudes |
| 89 | WISE_SNR_w3 | DOUBLE | S/N of WISE detection in w3 bands |
| 90 | WISE_RCHI2_w3 | DOUBLE | WISE reduced chi-squared in w3 bands |
| 91 | WISE_MAG_w4 | DOUBLE | WISE w4 magnitudes |
| 92 | WISE_ERR_MAG_w4 | DOUBLE | error on WISE w4 magnitudes |
| 93 | WISE_SNR_w4 | DOUBLE | S/N of WISE detection in w4 bands |
| 94 | WISE_RCHI2_w4 | DOUBLE | WISE reduced chi-squared in w4 bands |
| 95 | WISE_CC_FLAG | STRING | WISE confusion and contamination flag |
| 96 | WISE_PH_QUAL | STRING | WISE photometric quality flag |
Notes. Notes on the catalog columns: 1. object name as designated in the ESO archive. 2–3. The J2000 coordinates (Right Ascension and Declination) in sexagesimal degrees. 4. QSO redshift. The redshift was estimated using the result of a principal component analysis (Pâris et al. 2012). 5. Number of X-shooter observations. Most QSOs were observed only once. Thirteen QSOs were observed more than once because of interrupted OBs or ADC issues. 6–9. Modified Julian Day (MJD) at the beginning of X-shooter observation. The values for the different executions of the same observing block are also listed separately (when applicable). 10–13. Modified Julian Day (MJD) at the end of X-shooter observation. The values for the different executions of the same observing block are also listed separately (when applicable). 14–17. Minimum seeing of X-shooter observation, taken from the ESO.TEL.IA.FWHM keyword, expressed in arcsec. The values for the different executions of the same observing block are also listed separately (when applicable). 18–21. Minimum seeing of X-shooter observation, taken from the ESO.TEL.IA.FWHM keyword, expressed in arcsec. The values for the different executions of the same observing block are also listed separately (when applicable). 22–25. Average S/N near 1700 Å (rest frame) computed in the window 1690−1710 Å. The values for the different executions of the same observing block are also listed separately (when applicable). 26–29. Average S/N near 3000 Å (rest frame) computed in the window 2990−3010 Å. The values for the different executions of the same observing block are also listed separately (when applicable). 30–33. Average S/N near 3600 Å (rest frame) computed in the window 3590–3610Å. The values for the different executions of the same observing block are also listed separately (when applicable). 34–37. Calibration flags for each X-shooter observation. The value of the resulting calibration flag is the sum of the five following flags. A value of 0 means no problem to report, 1 means that the VIS spectrum was calibrated using a different standard star, 2 means that there are residual spikes in the UVB spectrum, 4 is set when apparent order-to-order fluctuations in the VIS arm, 8 when the exposure was interrupted, and a value of 16 is set when the exposure was taken with faulty ADCs. The values for the different executions of the same observing block (when applicable) are also listed separately. 38. High-resolution spectroscopy (Keck/HIRES or VLT/UVES) exist for some of the XQ-100 QSOs. The HR_FLAG is set to 1 if a high-resolution spectrum exists, otherwise 0. 39–41. Magnitudes in the B, V and R Johnson filters. These values were retrieved from the CDS (Centre de Données astronomiques de Strasbourg). When the magnitude in one of the filters could not be found, the value was set to − 1. 42–51. SDSS-DR12 point-spread function magnitudes (Cols.#42, 44, 46, 49, 50) and their associated errors (Cols.#43, 45, 47, 48, 51) in the u, g, r, i and z filters (Alam et al. 2015). Objects outside of the SDSS footprint have associated magnitudes and errors set to − 1. 52. If a QSO was observed as part of SDSS-I/II (York et al. 2000; Schneider et al. 2010), the DR7Q_MATCHED flag is set to 1, otherwise 0. 53–55. When a SDSS-I/II spectrum is available, the SDSS plate number (Col.#53), spectroscopic MJD (Col.#54) and fiber number (Col.#55). 56. If a QSO was observed as part of SDSS-III (Eisenstein et al. 2011), the DR12Q_MATCHED flag is set to 1, otherwise 0. 57. Number of SDSS-III spectra available. 58–63. When SDSS-III spectra are available, the plate numbers (Cols.#58, 61), spectroscopic MJDs (Cols.#59, 62) and fiber numbers (Col.#60, 63). The values of the first and second observation are listed separately (when applicable). 64. If there is a source in the FIRST radio catalog (version March 2014; Becker et al. 1995) within 5′′ of the QSO position, the FIRST_MATCHED flag is set to 1, otherwise 0. If the QSO lies outside of the FIRST footprint, it is set to − 1. 65. FIRST peak flux density at 20 cm, expressed in mJy. 66. S/N of the FIRST source whose flux is given in Col.#65. 67. If there is a source from the Two Micron All Sky Survey All-Sky Data Release Point Source Catalog (2MASS; Cutri et al. 2003) within 5′′ of the QSOposition, the TMASS_MATCHED is set to 1, otherwise 0. 68–76. J, H, and K magnitudes (Cols.#68, 71, 74), with their associated error (Cols.#69, 72, 75) and S/N (Cols.#70, 73, 76). We note that 2MASS magnitudes are Vega-based. 77. 2MASS rd_flag gives the meaning of the peculiar values of the magnitudes and errors11 78. If a source from the Wide-field Infrared Survey Explorer AllWISE Data Release Point Source Catalog (WISE; Wright et al. 2010) lies within 5′′ of a XQ-100 QSO, the WISE_MATCHED is set to 1, otherwise 0. 79–94. WISE w1, w2, w3, and w4 magnitudes (Cols#79, 83, 87, 91), with their associated errors (Cols#80, 84, 88, 92), S/N (Cols#81, 85, 89, 93) and χ2 (Cols#82, 86, 90, 94). 95. WISE contamination and confusion flag. 96. WISE photometric quality flag.
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