2003A&A...401.1057S


Query : 2003A&A...401.1057S

2003A&A...401.1057S - Astronomy and Astrophysics, volume 401, 1057-1061 (2003/4-3)

Possible detection of a magnetic field in T Tauri.

SMIRNOV D.A., FABRIKA S.N., LAMZIN S.A. and VALYAVIN G.G.

Abstract (from CDS):

Medium-resolution (R≃15000) circular spectropolarimetry of T Tauri is presented. The star was observed twice: on November 11, 1996 and January 22, 2002. Weak circular polarization was found in photospheric absorption lines, indicating a mean surface longitudinal magnetic field B||of 160±40G and 140±50G at the epoch of the first and second observations respectively. While these values are near the detection limit of our apparatus, we belive that they are real. One can conclude from our data that B|| of T Tau does not significantly exceed 200 G, which is much less than surface magnetic field strength of the star (>2.3kG) found by Guenther et al. (999A&A...341..768G) and Johns-Krull et al. (2000, ASP Conf. Ser., 223, 521). We discuss possible reasons for this difference.

Abstract Copyright:

Journal keyword(s): stars: pre-main sequence - stars: magnetic fields - stars: individual: T Tau

Simbad objects: 3

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Number of rows : 3
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 V* T Tau TT* 04 21 59.4323326335 +19 32 06.439974179   11.22 10.12 9.80   K0IV/Ve 1347 1
2 * eps Tau ** 04 28 36.9988174 +19 10 49.544603 5.42 4.54 3.53     G9.5IIICN0.5 559 1
3 HD 30466 a2* 04 49 16.0133726104 +29 34 16.790009157   7.34 7.28     B9pSiCr 83 0

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2021.10.27-09:39:15

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