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Table 3
Format of the binary FITS file that contains “trough-by-trough” information for BAL quasars.
| Column | Name | Format | Description |
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| 1 | SDSS_NAME | STRING | SDSS-DR12 designation hhmmss.ss+ddmmss.s (J2000) |
| 2 | RA | DOUBLE | Right Ascension in decimal degrees (J2000) |
| 3 | Dec | DOUBLE | Declination in decimal degrees (J2000) |
| 4 | THING_ID | INT32 | Thing_ID (unique SDSS source identifier) |
| 5 | PLATE | INT32 | Spectroscopic Plate number |
| 6 | MJD | INT32 | Spectroscopic MJD |
| 7 | FIBERID | INT32 | Spectroscopic Fiber number |
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| 8 | Z_VI | DOUBLE | Redshift from visual inspection |
| 9 | Z_PIPE | DOUBLE | Redshift from BOSS pipeline |
| 10 | ERR_ZPIPE | DOUBLE | Error on BOSS pipeline redshift |
| 11 | ZWARNING | INT32 | ZWARNING flag |
| 12 | Z_PCA | DOUBLE | PCA redshift |
| 13 | ERR_ZPCA | DOUBLE | Error on PCA redshift |
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| 14 | SDSS_MORPHO | INT32 | SDSS morphology flag 0 = point source 1 = extended |
| 15 | BOSS_TARGET1 | INT64 | BOSS target flag for main survey |
| 16 | ANCILLARY_TARGET1 | INT64 | BOSS target flag for ancillary programs |
| 17 | ANCILLARY_TARGET2 | INT64 | BOSS target flag for ancillary programs |
| 18 | EBOSS_TARGET0 | INT64 | Target selection flag for eBOSS pilot survey |
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| 19 | PSFFLUX | FLOAT[5] | flux in the u, g, r, i and z-bands (not corrected for Galactic extinction) |
| 20 | IVAR_PSFLUX | FLOAT[5] | inverse variance of u, g, r, i and z fluxes |
| 21 | PSFMAG | FLOAT[5] | PSF magnitudes in u, g, r, i and z-bands (not corrected for Galactic |
| extinction) | |||
| 22 | ERR_PSFMAG | FLOAT[5] | error in u, g, r, i and z PSF magnitudes |
| 23 | GAL_EXT | FLOAT[5] | Galactic extinction in the 5 SDSS bands (from Schlegel et al. 1998) |
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| 24 | SNR_SPEC | FLOAT | Median signal-to-noise ratio per pixel over the whole spectrum |
| 25 | SNR_1700 | FLOAT | Median signal-to-noise ratio per pixel in the window 1650–1750 Å |
| (rest frame) | |||
| 26 | SNR_3000 | FLOAT | Median signal-to-noise ratio per pixel in the window 2950–3050 Å |
| (rest frame) | |||
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| 27 | BI_CIV | DOUBLE | Balnicity Index (BI) |
| 28 | ERR_BI_CIV | DOUBLE | Error on Balnicity index |
| 29 | NCIV_2000 | INT32 | Number of troughs wider than 2000 km s-1 |
| 30 | VMIN_CIV_2000 | DOUBLE[5] | Minimum velocity of each detected absorption trough (Col. #29) |
| 31 | VMAX_CIV_2000 | DOUBLE[5] | Maximum velocity of each detected absorption trough (Col. #29) |
| 32 | POSMIN_CIV_2000 | DOUBLE[5] | Position of the minimum of each absorption trough |
| 33 | FMIN_CIV_2000 | DOUBLE[5] | Normalized flux density at the minimum of each absorption trough |
| 34 | AI_CIV | DOUBLE | Absorption index (AI) |
| 35 | ERR_AI_CIV | DOUBLE | Error on absorption index |
| 36 | NCIV_450 | INT32 | Number of absorption trough wider than 450 km s-1 |
| 37 | VMIN_CIV_450 | DOUBLE[17] | Minimum velocity of each detected absorption trough (Col. #36) |
| 38 | VMAX_CIV_450 | DOUBLE[17] | Maximum velocity of each detected absorption trough (Col. #36) |
| 39 | POSMIN_CIV_450 | DOUBLE[17] | Position of the minimum of each absorption trough |
| 40 | FMIN_CIV_450 | DOUBLE[17] | Normalized flux density at the minimum of each absorption trough |
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