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Simple Target
List Of Targets
Fast Xmatch with large catalogs or Simbad
Target
Name (resolved by
Sesame
) or
Position
:
J2000
B1975
B1950
B1900
B1875
B1855
Galactic
Supergal.
Ecl.J2000
Target dimension:
deg
arcmin
arcsec
NB: The epoch used for the query is the original epoch of the table(s)
Radius
Box size
J/MNRAS/517/5325
483
Star ages with ML and GALAH DR3 spectra (Hayden+, 2022)
ReadMe+ftp
2022MNRAS.517.5325H
Similar Catalogs
Post annotation
1.
J/MNRAS/517/5325/table
Chemical clock ages estimated with ML XGBoost algorithm for our selected Milky way stars
(214577 rows)
meta
J/MNRAS/517/5325/table
Simple Constraint
List Of Constraints
Query by
Constraints
applied on Columns
(
Output Order:
+
-
)
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Sort
Column
Constraint
Explain
(
UCD
)
recno
Record number assigned by the VizieR team. Should Not be used for identification.
(
meta.record
)
(
RECORD
)
GALAH
GALAH identifier from GALAH+ DR3 of Buder et al.
2021MNRAS.506..150B
, Cat.
J/MNRAS/506/150
(galah_id)
(
meta.id;meta.main
)
(
ID_MAIN
)
2MASS
(char)
2MASS identifier from 2MASS All-Sky Catalogue
2003yCat.2246....0C
, Cat.
II/246
(2mass_id)
(
meta.id.assoc
)
(
ID_ASSOCIATED
)
GaiaDR2
Display the GaiaDR2 data
(
meta.ref.url
)
(
DATA_LINK
)
Age
Gyr
The chemical clock age estimated from XGBoost algorithm detailed in sect. 3.2, ages recommended for use(age_xgboost)
(
time.age;meta.modelled
)
(
TIME_AGE
)
e_Age
Gyr
The total combined Age error from XGBoost algorithm (age
error
xgboost)
(Note 1)
(
stat.error;time.age
)
(
ERROR
)
Test
Flag True as 1 for 5190 cases and 0 as false to indicates stars selected for the test set of XGBoost verifications (is
testing
star)
(Note 2)
(
meta.code
)
(
CODE_MISC
)
Train
Flag True as 1 for 12109 cases and 0 as false to indicates stars selected for the training set of XGBoost (is
training
star)
(Note 2)
(
meta.code
)
(
CODE_MISC
)
AgeS2021
Gyr
The chemical clock ages derived by Sharma et al. (
2021MNRAS.506.1761S
) using Bayes th. not recommended for use (age
sharma2021
bayes)
(
time.age;meta.modelled
)
(
TIME_AGE
)
e_AgeS2021
Gyr
The error in the chemical clock AgeS2021 not recommended for use (age
error
sharma2021_bayes)
(
stat.error
)
(
ERROR
)
Simbad
ask the
Simbad
data-base about this object
(
meta.ref.url
)
(
DATA_LINK
)
_RA
deg
(i)
Infrared position from 2MASS name (right ascension part)
(
pos.eq.ra;meta.main
)
(
POS_EQ_RA_MAIN
)
_DE
deg
(i)
Infrared position from 2MASS name (declination part)
(
pos.eq.dec;meta.main
)
(
POS_EQ_DEC_MAIN
)
ALL
cols
(i)
indexed column
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UCD1+
UCD1
https://cdsannotations.u-strasbg.fr/annotations/vizierTable//
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