Open Access
Table A.3.
Data model for the eFEDS spectroscopic compilation (all spec-z).
| Column name | Datatype | Description | Units |
|---|---|---|---|
| ls_idx | long | Index for internal use only | |
| ls_id | long | Unique ID of Legacy Survey DR9 photometric object associated with the spec-z. Computed from Legacy Survey DR9 catalogue as ls_id = objid + (brickid < < 16) + (release < < 40) | |
| ls_ra | float | Coordinate from Legacy Survey DR9 at epoch ls_epoch | deg |
| ls_dec | float | Coordinate from Legacy Survey DR9 at epoch ls_epoch | deg |
| ls_pmra | float | Proper motion from Legacy Survey DR9 | mas yr−1 |
| ls_pmdec | float | Proper motion from Legacy Survey DR9 | mas yr−1 |
| ls_epoch | float | Coordinate epoch from Legacy Survey DR9 | year |
| ls_mag_g | float | DECam g-band model magnitude derived from Legacy Survey DR9, AB | mag |
| ls_mag_r | float | DECam r-band model magnitude derived from Legacy Survey DR9, AB | mag |
| ls_mag_z | float | DECam z-band model magnitude derived from Legacy Survey DR9, AB | mag |
| specz_n | int | Total number of spec-z associated with this Legacy Survey DR9 object | |
| specz_raj2000 | float | Coordinate of spec-z, propagated if necessary to epoch J2000 | deg |
| specz_dej2000 | float | Coordinate of spec-z, propagated if necessary to epoch J2000 | deg |
| specz_nsel | int | Number of spec-z selected to inform result for this object | |
| specz_rank | int | Rank of this particular spec-z (1=best, >1=less favoured, 0=not selected) | |
| specz_redshift | float | Final redshift determined for this object | |
| specz_normq | int | Final normalised redshift quality (NORMQ) associated with this object (see section 3) | |
| specz_normc | string | Final normalised classification determined for this object | |
| specz_hasvi | Boolean | True if best spec-z for this object has a visual inspection | |
| specz_catcode | string | Catalogue code of best spec-z for this object (see table 1) | |
| specz_bitmask | long | Bitmask encoding catalogues containing spec-z for this object. Bit encoding: 0=sdssv_vi; 1=boss_vi; 2=sdss_vi; 3=efeds_vi; 4=gama; 5=wigglez; 6=2slaq; 7=6dfgs; 8=2mrs; 9=boss_novi; 10=sdss_novi; 11=hectospec; 12=fast; 13=gaia_rvs; 14=lamost; 15=simbad; 16=ned | |
| specz_sel_bitmask | long | Bitmask encoding catalogues containing informative spec-z for an object. Bit encoding is the same as specz_bitmask | |
| specz_flags | int | Bitmask encoding quality flags for this object. Bit encoding: 0=No Legacy Survey DR9 counterpart within matching radius; 1=Significant scatter (stddev(zi) > 0.01) in the redshifts available for this object; 2=unused; 3=Blazar candidate; 4=Disagreement between the normalised classifications available for this object | |
| specz_sel_normq_max | int | Highest NORMQ of informative spec-z for this object | |
| specz_sel_normq_mean | float | Mean NORMQ of informative spec-z for this object | |
| specz_sel_z_mean | float | Mean redshift of informative spec-z for this object | |
| specz_sel_z_median | float | Median redshift of informative spec-z for this object | |
| specz_sel_z_stddev | float | Standard deviation of redshifts for informative spec-z for object | |
| specz_all_nvi | int | Number of spec-z with VIs for this object | |
| specz_all_normq_max | float | Highest NORMQ of all spec-z for this object | |
| specz_all_normq_mean | float | Mean NORMQ of all spec-z for this object | |
| specz_all_z_mean | float | Mean redshift of all spec-z for this object | |
| specz_all_z_median | float | Median redshift of all spec-z for this object | |
| specz_all_z_stddev | float | Standard deviation of redshifts for all spec-z for this object | |
| orig_catcode | string | Catalogue code of individual spec-z | |
| orig_ra | float | Coordinate associated with individual spec-z measurement | deg |
| orig_dec | float | Coordinate associated with individual spec-z measurement | deg |
| orig_pos_epoch | float | Coordinate epoch associated with individual spec-z measurement | |
| orig_ls_sep | float | Distance from spec-z to Legacy Survey DR9 photometric counterpart (corrected for proper motion) | arcsec |
| orig_ls_gt1ctp | Boolean | Can spec-z be associated with > 1 possible Legacy Survey DR9 counterpart? | |
| orig_ls_ctp_rank | int | Rank of counterpart out of all possibilities for this spec-z (1=closest) | |
| orig_id_col | string | Name of column in original catalogue supplying ORIG_ID value | |
| orig_qual_col | string | Name of column in original catalogue supplying ORIG_QUAL value | |
| orig_redshift_col | string | Name of column in original catalogue supplying ORIG_REDSHIFT value | |
| orig_class_col | string | Name of column in original catalogue supplying ORIG_CLASS value | |
| orig_id | string | Orig. value of ID of individual spec-z measurement (as a string) | |
| orig_redshift | float | Orig. redshift value of individual spec-z measurement | |
| orig_qual | string | Orig. redshift quality value of individual spec-z measurement | |
| orig_normq | int | Normalised redshift quality of individual spec-z measurement | |
| orig_class | string | Orig. classification label of individual spec-z measurement | |
| orig_hasvi | Boolean | True if individual spec-z has a visual inspection from our team | |
| orig_normc | string | Normalised classification code of individual spec-z measurement | |
| orig_bitmask | long | Bitmask encoding catalogue providing spec-z for this spec-z measurement. See specz_bitmask column. |
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