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J/A+A/320/185       UBVRIcJHKL photometry in Lup    (Wichmann+ 1997)

The T Tauri star population in the Lupus star forming region Wichmann R., Krautter J., Covino E., Alcala J.M., Neuhaeuser R., Schmitt J.H.M.M. <Astron. Astrophys. 320, 185 (1997)> =1997A&A...320..185W
ADC_Keywords: Stars, pre-main sequence ; Photometry, UBVRIJKLMNH Keywords: stars: formation - stars: late-type - stars: pre-main sequence - X-rays: stars Description: In a recent study, some 130 new weak-line T Tauri stars (WTTS) have been discovered in the Lupus star forming region (SFR). Some of these stars are seen projected onto regions of high obscuration, while others are located far from the Lupus dark clouds. In this paper we present photometric observations of a large sample of these WTTS. We estimate effective temperatures and luminosities for the stars observed, and derive masses and ages by comparison with theoretical evolutionary tracks. The photometric observations were performed at the ESO 1 m-Telescope during two observing runs in 1993 (March 10-12) and 1994 (May 1-6) at ESO, La Silla. The typical standard deviations are 0.01mag in V, 0.02mag in B-V, 0.04mag in U-B, 0.01 in V-R and V-I. For a description of the UBV, (RI)c and JHKL photometric systems, see e.g. GCPD/01, GCPD/54 and GCPD/09 File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table6.dat 88 92 Photometry of Lupus T Tauri stars table7.dat 71 91 Stellar properties of Lupus T Tauri stars
See also: J/A+AS/123/329 : New weak-line T Tauri stars in Lupus (Krautter+ 1997) Byte-by-byte Description of file: table6.dat
Bytes Format Units Label Explanations
1- 2 A2 --- --- [RX] 3- 15 A13 --- RX Identifier of star from ROSAT 20- 24 F5.2 mag Vmag ? V magnitude 26- 30 F5.2 mag B-V ? B-V color index 33- 37 F5.2 mag U-B ? U-B color index 40- 44 F5.2 mag V-Rc ? V-R(Cousins) color index 47- 51 F5.2 mag V-Ic ? V-I(Cousins) color index 54- 58 F5.2 mag Jmag ? J magnitude 60 I1 0.01mag e_Jmag ? Error of J magnitude 63- 67 F5.2 mag Hmag ? H magnitude 69 I1 0.01mag e_Hmag ? Error of H magnitude 72- 76 F5.2 mag Kmag ? K magnitude 78 I1 0.01mag e_Kmag ? Error of K magnitude 81- 85 F5.2 mag Lmag ? L magnitude 87- 88 I2 0.01mag e_Lmag ? Error of L magnitude
Byte-by-byte Description of file: table7.dat
Bytes Format Units Label Explanations
1- 2 A2 --- --- [RX] 3- 15 A13 --- RX Identifier of star from ROSAT 17- 21 A5 --- SpType Spectral type 24- 29 F6.1 K Teff Effective temperature 32- 36 F5.2 [solLum] log(L) Log(L_bol) 40- 43 F4.2 mag AV Extinction A(V) 47- 50 F4.2 solRad Rad Radius 54- 57 F4.2 solMass Mass Mass (1) 59 A1 --- l_log(age) [U] Lower limit indicator (2) 61- 64 F4.2 [yr] log(age) Log(age) (1) 67- 71 F5.2 mag D(H-K) ? Delta (H-K)
Note (1): Masses and ages are from evolutionary tracks by D'Antona and Mazzitelli (1994ApJS...90..467D) Note (2): U indicates that age is lower limit, otherwise blank
Acknowledgements: Rainer Wichmann History: * 22-Oct-2001: a modified version of table6 was supplied by the first author (Rainer Wichmann, ), the previous version contained R-I indices (instead of V-R) for some of the stars.
(End) Patricia Bauer [CDS] 09-Oct-1996
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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