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 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:
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FileName Lrecl Records Explanations
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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
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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
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Bytes Format Units Label Explanations
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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
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Byte-by-byte Description of file: table7.dat
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Bytes Format Units Label Explanations
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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)
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Note (1): Masses and ages are from evolutionary tracks by D'Antona and
Mazzitelli (1994ApJS...90..467D 1994ApJS...90..467D)
Note (2): U indicates that age is lower limit, otherwise blank
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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