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J/A+A/297/391
  T Tauri stars ROSAT survey (Neuhaeuser+, 1995)
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img(gal)
1.J/A+A/297/391/table1(c)Sample of T Tauri stars (TTS) studied (153 rows)
2.J/A+A/297/391/table2(c)ROSAT ALL Sky Survey (RASS) data for TTS above RASS detection limit (56 rows)
3.J/A+A/297/391/table3Spectral fit results for detected TTS (60 rows)
4.J/A+A/297/391/table4Upper limits for TTS below RASS limit (111 rows)
5.J/A+A/297/391/table5Statistical significance for correlations (16 rows)
6.J/A+A/297/391/table6Statistical significance for classical T Tauri stars (CTTS) and weak-line T Tauri stars (WTTS) being different (19 rows)
7.J/A+A/297/391/tablea1Non-X-ray data for TTS studied (188 rows)
8.J/A+A/297/391/refsReferences quoted in table1 and tablea1 (95 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+2+3+4+7)Name (char) Name (meta.id;meta.main)
  (1)n_Name (char) [abc] Note on name (Note 1)   (meta.note)
  (1)HBC  (n) []? HBC number V/73 (Herbig & Bell 1988) (meta.id)
  (1)Type (char) Type of the star (Note 2)   (src.class)
  (1)r_Name (char) References (detailed in refs.dat) (meta.ref)
  (1+2)RAJ2000 "h:m:s" (i) Right ascension J2000.0 (optical position) (pos.eq.ra;meta.main)
  (1+2)DEJ2000 "d:m:s" (i) Declination J2000.0 (optical position) (pos.eq.dec;meta.main)
  (1)r_pm (char) References regarding proper motion (meta.ref)
  (1)r_RV  (n) []? References regarding radial velocity (meta.ref)
  (1)RASS  (n) []? Maximum likelihood for existence for RASS detected objects (stat.fit.param)

ALL cols
    
(n) indicates a possible blank or NULL column(i)indexed column
  (1)u_RASS (char) colon indicates source confusion (meta.code.error)
  (1)n_RASS (char) 'ul' for RASS non-detections (meta.note)
  (2+4)Dist arcsec Distance between X-ray and optical positions (pos.angDistance)
  (2)n_Dist (char) [:] A colon indicates X-ray sources that appear to be extended (meta.note)
  (2)HR1   [-1/1] Hardness ratio 1 (Note 1)   (phot.flux;arith.ratio)
  (2)e_HR1  rms uncertainty on HR1 (stat.error)
  (2)HR2   [-1/1] Hardness ratio 2 (Note 1)   (phot.flux;arith.ratio)
  (2)e_HR2  rms uncertainty on HR2 (stat.error)
  (2+4)Xcount ct Background subtracted X-ray counts (for multiples and source confusion cases, we list the combined number of counts). (phot.count;em.X-ray)
  (2)e_Xcount ct rms uncertainty on Xcount (stat.error)
  (2+4)Exp s RASS exposition time (time.duration;obs.exposure)
  (3)logN(H) [cm-2] Foreground hydrogen column density (phys.columnDensity)
  (3)u_logN(H) (char) ':' indicates cases, where fixed absorption did not yield good fits (see text in Sec. 3 for details) (meta.code.error)

ALL cols
    
(n) indicates a possible blank or NULL column(i)indexed column
  (3)e(logN(H))u  (n) []? Error in absorption (upper interval) (1) (Note 1)   (stat.error)
  (3)e(logN(H))l  (n) []? Error in absorption (lower interval) (1) (Note 1)   (stat.error)
  (3)k.Tx keV X-ray emission energy (em.energy)
  (3)e(k.Tx)u keV Error in k.Tx (upper interval) (stat.error)
  (3)e(k.Tx)l keV Error in k.Tx (lower interval) (stat.error)
  (3+4)1/ECF 10+4J/ct/cm2Energy conversion factor (10-11/ECF) (arith.factor)
  (3)e(1/ECF)u 10+4J/ct/cm2Error in ECF (upper interval) (stat.error)
  (3)e(1/ECF)l 10+4J/ct/cm2Error in ECF (lower interval) (stat.error)
  (3+4)Lx 10+23W Individually corrected X-ray luminosity (Lx/10+30) (Note 2)   (phys.luminosity;em.X-ray)
  (3)e(Lx)u 10+23W Error in Lx (upper interval) (phys.luminosity;em.X-ray)
  (3)e(Lx)l 10+23W Error in Lx (lower interval) (phys.luminosity;em.X-ray)
  (3+4)Fs 10+4W/m2 (n) []? X-ray surface flux (Fs/10+7) (2) (Note 2)   (phot.flux;em.X-ray)
  (3)e(Fs)u 10+4W/m2 (n) []? Error in Fs (upper interval) (stat.error)

ALL cols
    
(n) indicates a possible blank or NULL column(i)indexed column
  (3)e(Fs)l 10+4W/m2 (n) []? Error in Fs (lower interval) (stat.error)
  (4)Proba % Probability of existence (stat.fit.goodness)
  (4)l_Xcount (char) [≤] limit flag on Xcount (meta.code.error)
  (4)n_1/ECF (char) [:] ':' average 1/ECF (Note 2)   (meta.note)
  (4)l_Lx (char) [≤>] limit flag on Lx (meta.code.error)
  (4)l_Fs (char) [≤] limit flag on Fs (meta.code.error)
  (5+6)Test (char) Correlation tested (meta.id;meta.main)
  (5+6)n_Test (char) [*] Note on Test (Note 1)   (meta.note)
  (5)Prop (char) Test property (meta.note)
  (5)Unit (char) Sample unit (meta.unit)
  (5)det  Number of pairs tested with detections (meta.number)
  (5)ul  Upper limits detection (instr.sensitivity)
  (5)PrCox % Probability for the null hypothesis that the correlation tested is not present according to Cox's proportional hazard model (stat.fit.goodness)

ALL cols
    
(n) indicates a possible blank or NULL column(i)indexed column
  (5)PrKen % Probability for the null hypothesis that the correlation tested is not present according to the Generalized Kendall's τ test (stat.fit.goodness)
  (5)PrSpe % Probability for the null hypothesis that the correlation tested is not present according to the Spearman's ρ test (stat.fit.goodness)
  (5)Slope  (n) []? Slope resulting from a linear regression for correlations accepted (stat.fit.param)
  (5)e_Slope  (n) []? rms uncertainty on Slope (stat.error)
  (6)unit (char) Test item unit (meta.unit)
  (6)CTTSs  Classical T Tauri stars (CTTS) sample size (meta.number)
  (6)CTTSsul  (n) []? Upper limits of the CTTS sample size (meta.number)
  (6)CTTSmn  CTTS mean (src.sample;stat.mean)
  (6)e_CTTSmn  rms uncertainty on CTTS mean (stat.error)
  (6)CTTSmd  (n) []? CTTS median (meta.number)
  (6)WTTSs  Weak-line T Tauri stars (WTTS) sample size (meta.number)
  (6)WTTSsul  (n) []? Upper limits of the WTTS sample size (meta.number)
  (6)WTTSmn  WTTS mean (src.sample;stat.mean)

ALL cols
    
(n) indicates a possible blank or NULL column(i)indexed column
  (6)e_WTTSmn  rms uncertainty on WTTS mean (stat.error)
  (6)WTTSmd  WTTS median (src.sample;stat.median)
  (6)PrGWpe % Probability for the null hypothesis that CTTS and WTTS distributions are similar according to Gehan's generalized Wilcoxon test for permutation variance (stat.fit.goodness)
  (6)PrGWhy % Probability for the null hypothesis that CTTS and WTTS distributions are similar according to Gehan's generalized Wilcoxon test for hypergeometric variance (stat.fit.goodness)
  (6)PrLogRank  Probability for the null hypothesis that CTTS and WTTS distributions are similar according to the logrank test (c.f. Sec. 5.1.) (stat.fit.goodness)
  (7)EWHa (char) 0.1nm Halpha equivalent width (spect.line.eqWidth)
  (7)r_EWHa (char) Reference for Halpha equivalent width (meta.ref)
  (7)l_vsini (char) limit flag on vsini (meta.code.error)
  (7)vsini km/s (n) []? Projected surface velocity (phys.veloc.rotat)
  (7)P d (n) []? Rotation period (time.period)
  (7)r_P (char) References for P and vsini (Note 1)   (meta.ref)
  (7)L solLum (n) []? Stellar bolometric luminosity (phys.luminosity)
  (7)r_L  (n) []? References for the luminosity L (meta.ref)

ALL cols
    
(n) indicates a possible blank or NULL column(i)indexed column
  (7)Mass solMass (n) []? Stellar mass (phys.mass)
  (7)u_Mass (char) uncertainty flag on M (meta.code.error)
  (7)r_Mass  (n) []? References for the mass M (meta.ref)
  (7)l_log(t) (char) limit flag on age (meta.code.error)
  (7)log(t) [yr] (n) []? Stellar age (time.age)
  (7)u_log(t) (char) uncertainty flag on age (meta.code.error)
  (7)r_log(t)  (n) []? References for the age t (meta.ref)
  (7)log(Teff) [K] (n) []? Effective temperature (phys.temperature.effective)
  (7)r_log(Teff)  (n) []? References for Teff (meta.ref)
  (7)Av mag (n) []? Visual extinction (phys.absorption)
  (7)r_Av  (n) []? References for the extinction Av (meta.ref)
  (8)RefNum  Reference number (meta.ref)
  (8)Text (char) Text of reference, including the bibcode (meta.bib.bibcode)

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