At the GAVO data Center, we hold several data collections part of
or derived from Gaia data release 2:
* A version of GDR2's gaia_source table with just enough columns
to allow basic science (but therefore a bit faster and simpler to
deal with than the full gaia_source table). This table also
has Lindegren's RUWE measure for filtering out marginal solutions.
* The light curves released with DR2 as both a TAP-queriable table
(light curves as arrays) and an SSA service.
* The gdr2dist.main table with distances estimates computed by
Bailer-Jones et al (:bibcode:`2018AJ....156...58B`) that should be
used in preference to simple parallax operations.
* The gdr2mock schema, which contains a virtual Gaia catalog
generated from a carefully built model of the Galaxy.
At the GAVO data Center, we hold several data collections part of or
derived from Gaia data release 2:
* A version of GDR2's gaia_source table with just enough columns to
allow basic science (but therefore a bit faster and simpler to deal
with than the full gaia_source table). This table also has Lindegren's
RUWE measure for filtering out marginal solutions. * The light curves
released with DR2 as both a TAP-queriable table (light curves as
arrays) and an SSA service. * The gdr2dist.main table with distances
estimates computed by Bailer-Jones et al
(:bibcode:`2018AJ....156...58B`) that should be used in preference to
simple parallax operations. * The gdr2mock schema, which contains a
virtual Gaia catalog generated from a carefully built model of the
Galaxy.
If you use public Gaia DR2 data in a paper, please take note of
`ESAC's guide`_ on how to acknowledge and cite it.
.. _ESAC's guide:
http://gea.esac.esa.int/archive/documentation/GDR2/Miscellaneous/sec_credit_and_citation_instructions/
This is a “light” version of the full Gaia DR2 gaia_source table,
containing the original astrometric and photmetric columns with just
enough additional information to let careful researchers notice when
data is becomes uncertain and the full error model should be
consulted. The full DR2 is available from numerous places in the VO
(in particular from the TAP services ivo://uni-heidelberg.de/gaia/tap
and ivo://esavo/gaia/tap).
This table also includes a column containing the Renormalized Unit
Weight Error RUWE (GAIA-C3-TN-LU-LL-124-01), a robust measure for the
consistency of the solution.
On this TAP service, there is the table gdr2dist.main containing
distances computed by Bailer-Jones et al
(:bibcode:`2018AJ....156...58B`). If in doubt, use these instead of
the parallaxes provided here.
Query successful
For advice on how to cite the resource(s) that contributed to this result, see http://victor:8080/tableinfo/gaia.dr2light
This is a “light” version of the full Gaia DR2 gaia_source table,
containing the original astrometric and photmetric columns with just
enough additional information to let careful researchers notice when
data is becomes uncertain and the full error model should be
consulted. The full DR2 is available from numerous places in the VO
(in particular from the TAP services ivo://uni-heidelberg.de/gaia/tap
and ivo://esavo/gaia/tap).
This table also includes a column containing the Renormalized Unit
Weight Error RUWE (GAIA-C3-TN-LU-LL-124-01), a robust measure for the
consistency of the solution.
On this TAP service, there is the table gdr2dist.main containing
distances computed by Bailer-Jones et al
(:bibcode:`2018AJ....156...58B`). If in doubt, use these instead of
the parallaxes provided here.
For the contents of Gaia DR2,
the source ID consists of a 64-bit integer, least
significant bit = 1 and most significant bit = 64, comprising:
* a HEALPix index number (sky pixel) in bits 36 - 63; by definition the
smallest HEALPix index number is zero.
* a 2-bit Data Processing Centre code in bits 34 - 35; for example
MOD(source_id / 4294967296, 8) can be used to distinguish between
sources initialised via the Initial Gaia Source List by the Torino DPC
(code = 0) and sources otherwise detected and assigned by Gaia
observations (code > 0)
* a 25-bit plus 7 bit sequence number within the HEALPix pixel in bits 1
to 32 split into:
* a 25 bit running number in bits 8 x 32; the running numbers are
defined to be positive, i.e. never zero (except in the case of forced
empty windows)
* a 7-bit component number in bits 1 x 7 one spare bit in bit 33
This means that the HEALpix index level 12 of a given source is contained
in the most significant bits. HEALpix index of 12 and lower levels can
thus be retrieved as follows:
* HEALpix level 12 = source_id / 34359738368
* HEALpix level 11 = source_id / 137438953472
* HEALpix level 10 = source_id / 549755813888
* HEALpix level n = source_id / 2^35 * 4^(12 - level).
Unique source identifier. Note that this *cannot* be matched against the DR1 source_id.
Barycentric Right Ascension in ICRS at ref_epoch
Barycentric Declination in ICRS at ref_epoch
| 1737549777175757440 |
312.762229089986 |
6.69019079219045 |
| 1737550533090008832 |
312.751525094594 |
6.70022427144838 |
| 1737550533090009728 |
312.751627029253 |
6.70297122919211 |
| 1737549704161745920 |
312.775869981106 |
6.67861151919117 |
| 1737549704161107072 |
312.78173793957 |
6.67817395591416 |
| 1737549772880589952 |
312.778979626945 |
6.69256392417331 |
| 1737549742815060736 |
312.791075078569 |
6.68672603163831 |
| 1737549738520854912 |
312.790811720934 |
6.69755287335318 |
| 1737545310410239488 |
312.864719430429 |
6.60570417758828 |
| 1737545099956145280 |
312.882261990052 |
6.59590826409114 |
| 1737545031236668160 |
312.893057627948 |
6.58588740609915 |
| 1737545035531776768 |
312.897512222409 |
6.59032397352208 |
| 1737545134317277696 |
312.886162569309 |
6.6046833408244 |
| 1737545065597849216 |
312.90815996803 |
6.59807717183995 |
| 1737545069891517184 |
312.900702911849 |
6.60169038068721 |
| 1737546478640844672 |
312.80775786278 |
6.65128093950718 |
| 1737549433578348288 |
312.801163620366 |
6.66129060973898 |
| 1737549429283192576 |
312.804252275695 |
6.6565877466127 |
| 1737546478639870976 |
312.813150450912 |
6.65724851721529 |
| 1737546474345692544 |
312.81481917921 |
6.6558285185629 |