VizieR

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VizieR

Simple TargetList Of TargetsFast Xmatch with large catalogs or Simbad
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J/ApJ/871/193
  A combined Chandra & LAMOST study of stellar activity (He+, 2019)
ReadMe+ftp
2019ApJ...871..193H
Similar Catalogs
timeSerie
Post annotation 		img(gal)
1.J/ApJ/871/193/stars(c)LAMOST (Table 2) and key results (Table 3) for the stars in our sample[timeSerie] (484 rows)
2.J/ApJ/871/193/table1X-ray information for the 484 stars in our sample (1084 rows)
3.J/ApJ/871/193/table4Stars with Hα emission lines in our sample (24 rows)
4.J/ApJ/871/193/table5Stars with X-ray flares in our sample (12 rows)

Simple ConstraintList Of Constraints
 
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)Nx  (n)Number of X-ray measurements for this star (link to Table 1) (meta.number)
   (ALL)CXOGSG (char) (i) Object identifier from Wang+ 2016, J/ApJS/224/40 (meta.id;meta.main)
  (1)Ha (char) Display the Hα data for this star (link to Table 4) (meta.ref.url)
  (1)Xfl  (n)1: this star has X-ray flare data (link to Table 5) (meta.ref.url)
  (1+4)SpT (char) Spectral type subclass (Note 1)   (src.spType)
  (1)Teff K [3586/8925] Stellar effective temperature (Note 2)   (phys.temperature.effective)
  (1)e_Teff K [58/493] Uncertainty in Teff (stat.error;phys.temperature.effective)
  (1)logg [cm/s2] [1.8/5.6] log of surface gravity (Note 2)   (phys.gravity)
  (1)e_logg [cm/s2] [0.06/0.33] Uncertainty in logg (stat.error)
  (1)E(B-V) mag [0/1] Extinction (Note 2)   (phot.color.excess)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  (1)[Fe/H] [-] (n) [-1.8/0.71] Metallicity (Note 2)   (phys.abund.Z)
  (1)e_[Fe/H] [-] (n) [0.06/0.41] Uncertainty in [Fe/H] (stat.error;phys.abund.Fe)
  (1)[alpha/Fe] [-] (n) [-0.39/0.5] alpha element abundance relative to Fe (Note 2)   (phys.abund)
  (1)e_[alpha/Fe] [-] (n) [0.03/0.15] Uncertainty in [alpha/Fe] (stat.error;phys.abund)
  (1)Dist pc [21/5604] Distance (Note 2)   (pos.distance)
  (1)e_Dist pc [2/1399] Uncertainty in Dist (stat.error)
  (1)Age Gyr (n) [0.36/16] Stellar Age (Note 3)   (time.age)
  (1)e_Age Gyr (n) [0.12/4.3] Uncertainty in Age (stat.error;time.age)
  (1)Mass Msun (n) [0.85/2.71] Stellar Mass (Note 3)   (phys.mass)
  (1)e_Mass Msun (n) [0.04/0.41] Uncertainty in Mass (stat.error;phys.mass)
  (1)Vmag mag [8.6/17.3] Extinction-corrected V-band magnitude (phot.mag;em.opt.V)
  (1)e_Vmag mag [0.09/1] Uncertainity on Vmag (stat.error;phot.mag)
  (1)r_Vmag (char) Source of V-band magnitude (Note 5)   (meta.ref;pos.frame)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  (1)Mbol mag [-3.1/11] Bolometric magnitude (phot.mag.bol)
  (1)uFlux 10-15mW/m2 [0.02/10072] Unabsorbed 0.3-8keV X-ray flux in 10–15erg/cm2/s units (phot.flux;em.X-ray)
  (1)e_uFlux 10-15mW/m2 [0.02/1964] Uncertainty in uFlux (stat.error)
  (1)LumX 10-7W [4.5e+25/7.5e+32] 0.3-8keV X-ray luminosity in erg/s units (phys.luminosity;em.X-ray)
  (1)e_LumX 10-7W [4.9e+25/4.7e+32] Uncertainty in LumX (stat.error)
  (1)logRx [-] [-6.6/-1.9] log, X-ray-to-bolometric luminosity ratio (phys.luminosity;arith.ratio)
  (1)e_logRx [-] [0.09/1.2] Uncertainty in logRx (stat.error)
  (1)HR   [-1.2/1.4] Hardness ratio (Note 4)   (phot.flux;arith.ratio)
  (1)e_HR   [0.01/2.3] Uncertainty in HR (stat.error)
  (1)LC (char) Interactive Plot (if more than 4 X-ray measurements) (meta.ref.url)
  (1)LAMOST (char) Display the LAMOST -DR1 (V/146) and -DR4 data (V/153) within 3" (meta.ref.url)
  (1)UCAC4 (char) Display the UCAC4 data (Zacharias+ 2012, I/153) within 3" (meta.ref.url)
  (1)PS1 (char) Display the PS1 data (Chambers+ 2016, II/349) within 1.5" (meta.ref.url)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  (1)Simbad (char) ask the Simbad data-base about this object (meta.ref.url)
  (1)_RA deg (i) Positions from CXOGSG names (right ascension part) (pos.eq.ra;meta.main)
  (1)_DE deg (i) Positions from CXOGSG names (declination part) (pos.eq.dec;meta.main)
  (2+4)ObsID   [13/16543] Chandra observation identifier (meta.id;obs.param;obs)
  (2)Det (char) Chandra ACIS detector (meta.note)
  (2)Exp s [128/189850] Chandra exposure time after deadtime correction (time.duration;obs.exposure)
  (2)MJD d [51439/56755] Modified Julian Date at the beginning of observation (JD-2400000.5) (time.epoch)
  (2)VigF   [0.008/1.1] Vignetting factor (instr.param)
  (2)l_CR (char) Limit flag on CR (Note 1)   (meta.code.error)
  (2)CR 10+3ct/s (n) [0.02/177] Net count rate, 0.5-7keV (phot.count;em.X-ray)
  (2)e_CR 10+3ct/s (n) [0.02/9.7] Lower uncertainty in CR (stat.error)
  (2)u_e_CR (char) Uncertainty flag on e_CR (Note 2)   (meta.code.error)
  (2)E_CR 10+3ct/s (n) [0.04/9.7] Upper uncertainty in CR (stat.error;stat.max)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  (2)l_Flux (char) Limit flag on Flux (Note 1)   (meta.code.error;phot.flux)
  (2)Flux 10-15mW/m2(n) [0.01/848] Absorbed X-ray flux, 0.5-7keV in 10–15erg/cm2/s units (phot.flux;em.X-ray)
  (2)e_Flux 10-15mW/m2(n) [0.01/47] Lower uncertainty in Flux (stat.error;phot.flux)
  (2)u_e_Flux (char) Uncertainty flag on e_Flux (Note 2)   (meta.code.error)
  (2)E_Flux 10-15mW/m2(n) [0.02/47] Upper uncertainty in Flux (stat.error;stat.max)
  (3)EW 0.1nm [0.35/9] Equivalent Width, Hα (spect.line.eqWidth)
  (3)e_EW 0.1nm [0.02/0.33] Uncertainty in EW (stat.error;spect.line.eqWidth)
  (3)EWp 0.1nm [1.9/9.7] Excess Hα equivalent width over chromospheric emission (spect.line.eqWidth)
  (3)logRHa   [-4/-3.2] log, Hα emission index, LHα/Lbol (spect.index)
  (3)e_logRHa   [0.03/0.11] Uncertainty in logRHa (stat.error)
  (4)l_dT (char) [>] Limit flag on dT (meta.code.error)
  (4)dT s [4000/43000] Flare duration (time.duration)

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