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J/ApJS/209/9
  Unidentified gamma-ray sources. IV. X-ray (Paggi+, 2013)
Post annotation
img(gal)
1.J/ApJS/209/9/swift(c)Catalog of XRT-PC detected in the positional uncertainty region of the 2FGL source with their UVOT counterparts (tables 1 and 2) (357 rows)
2.J/ApJS/209/9/table3(c)XRT-PC sources featuring a USNO-B counterpart within the positional error (194 rows)
3.J/ApJS/209/9/table4UGSs without XRT-PC counterparts in the Fermi LAT positional uncertainty region (62 rows)
4.J/ApJS/209/9/table5XRT-PC counterparts to γ-ray blazar-like sources selected according to Papers I and V. (29 rows)
5.J/ApJS/209/9/table6XRT-PC counterparts to γ-ray blazar-like sources selected with the KDE technique (37 rows)

 
Query by Constraints constraints help applied on Columns (Output Order: + - )
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Column  Constraint Explain   (UCD)
  (ALL)recno  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)
  (1+3+4+5)2FGL (char) 2nd Fermi LAT catalog ID (JHHMM.m+DDMM) (meta.id;meta.main)
   (1+2+4+5)Swift (char) (i) Swift/XRT source ID (JHHMMSS.s+DDMMSS) (meta.id.cross)
  (1)M (char) B if the source is a possible counterpart to a γ-ray blazar-like system, and U if the source has an USNO counterpart (meta.ref.url)
  (1)OName (char) Other source name (Note 1)   (meta.id)
  (1)RAJ2000 "h:m:s" (i) XRT Hour of Right Ascension (J2000) (pos.eq.ra;meta.main)
  (1)DEJ2000 "d:m:s" (i) XRT Degree of Declination (J2000) (pos.eq.dec;meta.main)
  (1)ePos arcsec [3.5/9.1] Position error (stat.error;pos)
  (1+3)Exp s XRT-PC exposure time (time.duration;obs.exposure)
  (1)D-CR ct/ks Count rate by DETECT (phot.count;em.X-ray)
  (1)e_D-CR ct/ks Uncertainty in D-CR (stat.error)

ALL cols
    
 (i)indexed column
  (1)Sig   [2/5] Signal-to-noise threshold above which source is detected (stat.likelihood;obs)
  (1)S-CR ct/ks Count rate by OSTA (phot.count;em.X-ray)
  (1)e_S-CR ct/ks Uncertainty in S-CR (stat.error)
  (1)SNR   [0.22/91.12] Signal-to-Noise (stat.snr)
  (1)Xcat (char) List of catalogs cross-matched (Note 2)   (meta.id;meta.dataset)
  (1)Blaz (char) γ-ray blazar-like source (Note 3)   (meta.code)
  (1)z  (n) [0.0061/1.725] Redshift from literature (src.redshift)
  (1)RAuh h UVOT Hour of Right Ascension (J2000) (pos.eq.ra)
  (1)RAum min UVOT Minute of Right Ascension (J2000) (pos.eq.ra)
  (1)RAus s UVOT Second of Right Ascension (J2000) (pos.eq.ra)
  (1)DEu- (char) UVOT Sign of the Declination (J2000) (pos.eq.dec)
  (1)DEud deg UVOT Degree of Declination (J2000) (pos.eq.dec)
  (1)DEum arcmin UVOT Arcminute of Declination (J2000) (pos.eq.dec)

ALL cols
    
(n) indicates a possible blank or NULL column(i)indexed column
  (1)DEus arcsec UVOT Arcsecond of Declination (J2000) (pos.eq.dec)
  (1)Sep arcsec [0/6.5] Angular separation between X-ray and UV sources (pos.angDistance)
  (1)E(B-V) mag [0.01/16] Galactic extinction (Note 4)   (phot.color.excess)
  (1)ExpV s (n) UVOT V band exposure time (time.duration;obs.exposure;em.opt.V)
  (1)Vmag mag (n) [11.46/21.22] Swift/UVOT V band Vega magnitude from UVOTSOURCE (Note 5)   (phot.mag;em.opt.V)
  (1)f_Vmag (char) [*] * = filter saturation (meta.code)
  (1)e_Vmag mag (n) Uncertainty in Vmag (Note 6)   (stat.error;phot.mag;em.opt.V)
  (1)Vmag2 mag (n) [11.87/18.58] Swift/UVOT V band Vega magnitude from UVOTDETECT (Note 5)   (phot.mag;em.opt.V)
  (1)e_Vmag2 mag (n) Uncertainty in Vmag2 (Note 6)   (stat.error;phot.mag;em.opt.V)
  (1)ExpB s (n) UVOT B band exposure time (time.duration;obs.exposure;em.opt.B)
  (1)Bmag mag (n) [13.12/22.03] Swift/UVOT B band Vega magnitude from UVOTSOURCE (Note 5)   (phot.mag;em.opt.B)
  (1)e_Bmag mag (n) Uncertainty in Bmag (Note 6)   (stat.error;phot.mag;em.opt.B)
  (1)Bmag2 mag (n) [13.31/19.24] Swift/UVOT B band Vega magnitude from UVOTDETECT (Note 5)   (phot.mag;em.opt.B)

ALL cols
    
(n) indicates a possible blank or NULL column(i)indexed column
  (1)e_Bmag2 mag (n) Uncertainty in Bmag2 (Note 6)   (stat.error;phot.mag;em.opt.B)
  (1)ExpU s (n) UVOT U band exposure time (time.duration;obs.exposure;em.opt.U)
  (1)Umag mag (n) [11.91/21.91] Swift/UVOT U band Vega magnitude from UVOTSOURCE (Note 5)   (phot.mag;em.opt.U)
  (1)f_Umag (char) [*] * = filter saturation (meta.code)
  (1)e_Umag mag (n) Uncertainty in Umag (Note 6)   (stat.error;phot.mag;em.opt.U)
  (1)Umag2 mag (n) [11.83/21.46] Swift/UVOT U band Vega magnitude from UVOTDETECT (Note 5)   (phot.mag;em.opt.U)
  (1)f_Umag2 (char) [*] * = filter saturation (meta.code)
  (1)e_Umag2 mag (n) Uncertainty in Umag2 (Note 6)   (stat.error;phot.mag;em.opt.U)
  (1)ExpW1 s (n) Swift/UVOT W1 band exposure time (time.duration;obs.exposure)
  (1)W1mag mag (n) [11.01/22.23] Swift/UVOT UVW1 band Vega magnitude from UVOTSOURCE (Note 5)   (phot.mag;em.UV)
  (1)f_W1mag (char) [*] * = filter saturation (meta.code)
  (1)e_W1mag mag (n) Uncertainty in W1mag (Note 6)   (stat.error;phot.mag)
  (1)W1mag2 mag (n) [10.95/21.74] Swift/UVOT UVW1 band Vega magnitude from UVOTDETECT (Note 5)   (phot.mag;em.UV)

ALL cols
    
(n) indicates a possible blank or NULL column(i)indexed column
  (1)f_W1mag2 (char) [*] * = filter saturation (meta.code)
  (1)e_W1mag2 mag (n) Uncertainty in W1mag2 (Note 6)   (stat.error;phot.mag)
  (1)ExpM2 s (n) Swift/UVOT UVM2 band exposure time (time.duration;obs.exposure)
  (1)M2mag mag (n) [10.42/22.56] Swift/UVOT UVM2 band Vega magnitude from UVOTSOURCE (Note 5)   (phot.mag;em.UV)
  (1)f_M2mag (char) [*] * = filter saturation (meta.code)
  (1)e_M2mag mag (n) Uncertainty in M2mag (Note 6)   (stat.error;phot.mag;em.IR.4-8um)
  (1)M2mag2 mag (n) [10.36/21.95] Swift/UVOT UVM2 band Vega magnitude from UVOTDETECT (Note 5)   (phot.mag;em.UV)
  (1)f_M2mag2 (char) [*] * = filter saturation (meta.code)
  (1)e_M2mag2 mag (n) Uncertainty in M2mag2 (Note 6)   (stat.error;phot.mag;em.IR.4-8um)
  (1)ExpW2 s (n) UVOT W2 band exposure time (time.duration;obs.exposure)
  (1)W2mag mag (n) [12.23/22.8] Swift/UVOT UVW2 band Vega magnitude from UVOTSOURCE (Note 5)   (phot.mag;em.UV)
  (1)e_W2mag mag (n) Uncertainty in W2mag (Note 6)   (stat.error;phot.mag)
  (1)W2mag2 mag (n) [12.25/22.47] Swift/UVOT UVW2 band Vega magnitude from UVOTDETECT (Note 5)   (phot.mag;em.UV)

ALL cols
    
(n) indicates a possible blank or NULL column(i)indexed column
  (1)e_W2mag2 mag (n) Uncertainty in W2mag2 (Note 6)   (stat.error;phot.mag)
  (2)B1mag mag (n) [7.1/21.5] USNO-B first epoch blue magnitude (phot.mag;em.opt.B)
  (2)R1mag mag (n) [6.6/20.4] USNO-B first epoch red magnitude (phot.mag;em.opt.R)
  (2)B2mag mag (n) [7/22.7] USNO-B 2nd epoch blue magnitude (phot.mag;em.opt.B)
  (2)R2mag mag (n) [6.6/21.5] USNO-B 2nd epoch red magnitude (phot.mag;em.opt.R)
  (2)Imag mag (n) [6/20] USNO-B NIR magnitude (phot.mag;em.opt.I)
  (2)USNO (char) Cross-match with the USNO-B1 catalog (Cat. I/284) within 7" (meta.ref.url)
  (2)_RA deg (i) Positions from Swift names (right ascension part) (pos.eq.ra;meta.main)
  (2)_DE deg (i) Positions from Swift names (declination part) (pos.eq.dec;meta.main)
  (3)f_2FGL (char) [*] *: Flag on 2FGL (Note 1)   (meta.code)
  (4+5)f_Swift (char) [*] *: source with radio counterpart within the positional error listed in table 1 (meta.code)
  (4+5)AName (char) WISE designation (JHHMMSS.ss+DDMMSS.s) or WN0557.5+3838 (in table 5) (Note 1)   (meta.id)
  (4+5)Cl (char) [A-C ] Classification (A=most probable candidate blazar; only for table 5) (Note 2)   (meta.code.qual)

ALL cols
    
(n) indicates a possible blank or NULL column(i)indexed column
  (4+5)OType (char) Object type (only for table 5) (Note 3)   (src.class)

ALL cols
    
(n) indicates a possible blank or NULL column(i)indexed column
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