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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/ApJ/887/134
1986
Classification of Fermi blazar cand. from the 4FGL (Kang+, 2019)
ReadMe+ftp
2019ApJ...887..134K
Similar Catalogs
Post annotation
1.
J/ApJ/887/134/table3
The classification of Fermi blazar candidates of an unknown type (BCUs)
(1312 rows)
meta
J/ApJ/887/134/table3
Simple Constraint
List Of Constraints
Query by
Constraints
applied on Columns
(
Output Order:
+
-
)
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Column
Constraint
Explain
(
UCD
)
recno
Record number assigned by the VizieR team. Should Not be used for identification.
(
meta.record
)
(
RECORD
)
Seq
[1/1312] Sequential running identifier
(
meta.record
)
(
ID_NUMBER
)
4FGL
(char)
4FGL Source Name
(
meta.id;meta.main
)
(
ID_MAIN
)
Cntpt
(char)
Counterpart name
(
meta.id
)
(
ID_ASSOCIATED
)
C4FGL
(char)
Optical class (always "bcu")
(Note 1)
(
meta.code.class
)
(
CLASS_CODE
)
CRF
(char)
Random Forest classification ("bll": 835 occurrences or "fsrq": 477 occurrences)
(Note 2)
(
src.class
)
(
CLASS_OBJECT
)
PBi-RF
[0/1] Probability BCU i belongs to BL Lac using RF
(
stat.fit.goodness
)
(
STAT_PROBABILITY
)
PFi-RF
[0/1] Probability BCU i belongs to FSRQ using RF
(
stat.fit.goodness
)
(
STAT_PROBABILITY
)
CSVM
(char)
Support Vector Machines classification ("bll": 858 occurrences or "fsrq": 454 occurrences)
(Note 2)
(
src.class
)
(
CLASS_OBJECT
)
PBi-SVM
[0.016/1] Probability BCU i belongs to BL Lac using SVM
(
stat.fit.goodness
)
(
STAT_PROBABILITY
)
PFi-SVM
[0.0005/0.99] Probability BCU i belongs to FSRQ using SVM
(
stat.fit.goodness
)
(
STAT_PROBABILITY
)
CANN
(char)
Artificial neural network classification ("bll": 868 occurrences or "fsrq": 444 occurrences)
(Note 2)
(
src.class
)
(
CLASS_OBJECT
)
PBi-ANN
[0.1/0.9] Probability BCU i belongs to BL Lac using ANN
(
stat.fit.goodness
)
(
STAT_PROBABILITY
)
PFi-ANN
[0.1/0.9] Probability BCU i belongs to FSRQ using ANN
(
stat.fit.goodness
)
(
STAT_PROBABILITY
)
Simbad
ask the
Simbad
data-base about this object
(
meta.ref.url
)
(
DATA_LINK
)
_RA
deg
(i)
Right Ascension (J2000) from SIMBAD (not part of the original data)
(
pos.eq.ra;meta.main
)
(
POS_EQ_RA_MAIN
)
_DE
deg
(i)
Declination (J2000) from SIMBAD (not part of the original data)
(
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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