Description of table: pmSource +----------------+-----------------------+------+-----+---------+-------+ | Field | Type | Null | Key | Default | Extra | +----------------+-----------------------+------+-----+---------+-------+ | sourceid | int(10) unsigned | NO | PRI | NULL | | | ra | double(12,9) unsigned | NO | | NULL | | | de | double(11,9) | NO | | NULL | | | l | double(12,9) unsigned | NO | MUL | NULL | | | b | double(11,9) | NO | MUL | NULL | | | mag | float(5,3) | NO | MUL | NULL | | | emag | float(5,3) unsigned | NO | | NULL | | | ell | float(4,3) unsigned | NO | | NULL | | | pm | double(10,3) unsigned | NO | MUL | NULL | | | epm | double(10,3) unsigned | NO | | NULL | | | rapm | double(10,3) | NO | | NULL | | | erapm | double(10,3) unsigned | NO | | NULL | | | depm | double(10,3) | NO | | NULL | | | edepm | double(10,3) unsigned | NO | | NULL | | | epochs | smallint(5) unsigned | NO | | NULL | | | dets | tinyint(3) unsigned | NO | MUL | NULL | | | stellardets | tinyint(3) unsigned | NO | | NULL | | | pawprintdets | tinyint(3) unsigned | NO | | NULL | | | n_epmf_0 | tinyint(3) unsigned | NO | | NULL | | | n_epmf_1 | tinyint(3) unsigned | NO | | NULL | | | n_epmf_2 | tinyint(3) unsigned | NO | | NULL | | | n_epmf_3 | tinyint(3) unsigned | NO | | NULL | | | reliable | tinyint(3) unsigned | NO | MUL | NULL | | | Zmag | float(5,3) | YES | MUL | NULL | | | eZmag | float(5,3) unsigned | YES | | NULL | | | Zell | float(4,3) unsigned | YES | | NULL | | | Zclass | tinyint(4) | YES | | NULL | | | Zsep | float(4,3) unsigned | YES | | NULL | | | Ymag | float(5,3) | YES | MUL | NULL | | | eYmag | float(5,3) unsigned | YES | | NULL | | | Yell | float(4,3) unsigned | YES | | NULL | | | Yclass | tinyint(4) | YES | | NULL | | | Ysep | float(4,3) unsigned | YES | | NULL | | | Jmag | float(5,3) | YES | MUL | NULL | | | eJmag | float(5,3) unsigned | YES | | NULL | | | Jell | float(4,3) unsigned | YES | | NULL | | | Jclass | tinyint(4) | YES | | NULL | | | Jsep | float(4,3) unsigned | YES | | NULL | | | Hmag | float(5,3) | YES | MUL | NULL | | | eHmag | float(5,3) unsigned | YES | | NULL | | | Hell | float(4,3) unsigned | YES | | NULL | | | Hclass | tinyint(4) | YES | | NULL | | | Hsep | float(4,3) unsigned | YES | | NULL | | | healpID_nest_8 | mediumint(8) unsigned | NO | MUL | 0 | | +----------------+-----------------------+------+-----+---------+-------+ Notes: - The astrometric fit is performed separately for each 'pawprint set' (all epochs of a coincident pawprint observations). Fields such as RA, Dec, mag, pm, etc. are averages of their equivalent values across overlapping pawprint sets (and tiles). - sourceid - unique source identifier. Maintained between tables in the database. - ra, de - Right Ascension and Declination are products of the astrometric fit, given in decimal degrees at epoch 2012.0. These are averages across measurements made in overlapping pawprint sets. - l, b - Galactic longitude and latitude. Converted from the epoch 2012.0 equatorial positions. - mag, emag - Ks band magnitudes, inverse variance weighted averages across overlapping pawprint sets. A magnitude and uncertainty from each pawprint set are the median and median absolute deviation of Ks band aperMag2 measurements from all epochs in the pawprint set. - ell - Mean Ks band ellipticity across all observations of this source in every pawprint set. - pm, epm, rapm, erapm, depm, edepm - Proper motions (total, in RAcosDec and Dec respectively, errors are prefixed with 'e'). These are inverse variance weighted averages across their measured values from all pawprint sets. Values given in mas/yr. - epochs - the total number of epochs across all pawprint sets used by the VIRAC pipeline. - dets - the number of separate pawprint sets/epoch groups (see pawprintdets) in which the source was detected. - stellardets - the number of pawprint sets in which the source had a stellar modal morphological classification. - pawprintdets - the number of separate pawprint sets in which a source was detected. Technically 'dets' can be greater than this value where e.g. a high proper motion or faint source is not matched between consecutive observing seasons. - n_epmf_[0-3] - the number of pawprint sets with proper motion error flags 0 to 3. 0 = no error flags 1 = median proper motion uncertainty at this magnitude >5 mas/yr 2 = proper motion uncertainty for this source is significantly greater than normal for a source of its magnitude 3 = 1+2 - reliable - reliability flag, '1' indicates that this source is expected to be reliably measured. This is a combination of dets>=2, dets=pawprintdets, and no pm error flags in any pawprint sets (n_epmf_0=dets). - [ZYJH]mag - VVV DR4 Z, Y, J, H photometry. - e[ZYJH]mag - Error on VVV DR4 Z, Y, J, H photometry. - [ZYJH]ell - Ellipticity of the DR4 Z, Y, J, H detection. - [ZYJH]class - VVV DR4 Z, Y, J, H morphological classification. 1 = galaxy 0 = noise -1 = stellar -2 = probably stellar -3 = probable galaxy -7 = bad pixel within 2" aperture -9 = saturated - [ZYJH]sep - Sky distance between VVV DR4 Z, Y, J, H detection and the projected source position at the J, Y, J, H observation epoch taking the pipeline proper motion into account. - VVV DR4 parameters are taken from tile stacks. Empty values indicate there was no coverage of this field in VVV DR4. Where a source is otherwise not detected in a band obviously false values are given (e.g. Zmag=99.999). - healpID_nest_8 - nested healpix ID at depth 8 (equatorial coordinates).