The magnetic field of the pre-main sequence Herbig Ae star HD 190073
作者： C. Catala , E. Alecian , J.-F. Donati , G. A. Wade , J. D. Landstreet
DOI: 10.1051/0004-6361:20066264
关键词:
摘要: The general context of this paper is the study magnetic fields in pre-main sequence intermediate mass Herbig Ae/Be stars. Magnetic are likely to play an important role evolution at these masses, particular controlling gains and losses stellar angular momentum. aim announce detection a structured field Ae star HD 190073, discuss various scenarii for geometry star, its environment field. We have used ESPaDOnS spectropolarimeter CFHT 2005 2006 obtain high-resolution signal-to-noise circular polarization spectra which demonstrate unambiguously presence photosphere star. Nine were obtained, each one showing clear Zeeman signature. This signature suggestive on large scales. signature, corresponds longitudinal 74+- 10 G, does not vary detectably one-year timeframe, indicating either azimuthally symmetric field, zero inclination angle between rotation axis line sight, or very long period. optical spectrum 190073 exhibits number emission lines. formation lines framework model involving turbulent heated region base wind, possibly powered by accretion. brings element our understanding magnetism masses.
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A. E. Ringuelet, M. Cuttela, A model for the Ae star with detected magnetic field, HD 190073 Monthly Notices of the Royal Astronomical Society. ,vol. 246, pp. 20- 28 ,(1990)
P.S. Chen, X.H. Wang, J.H. He, Herbig Ae/Be stars with the IRAS low-resolution spectra Astrophysics and Space Science. ,vol. 271, pp. 259- 276 ,(2000) , 10.1023/A:1002405302952
Horace W. Babcock, A Catalog of Magnetic Stars. Astrophysical Journal Supplement Series. ,vol. 3, pp. 141- ,(1958) , 10.1086/190035
M. A. Pogodin, A. S. Miroshnichenko, A. E. Tarasov, M. P. Mitskevich, G. A. Chountonov, V. G. Klochkova, M. V. Yushkin, N. Manset, K. S. Bjorkman, N. D. Morrison, J. P. Wisniewski, A new phase of activity of the Herbig Be star HD 200775 in 2001: Evidence for binarity Astronomy and Astrophysics. ,vol. 417, pp. 715- 723 ,(2004) , 10.1051/0004-6361:20031783
Arieh Koenigl, Disk accretion onto magnetic T Tauri stars The Astrophysical Journal. ,vol. 370, ,(1991) , 10.1086/185972
J. A. Eisner, B. F. Lane, L. A. Hillenbrand, R. L. Akeson, A. I. Sargent, Resolved inner disks around Herbig Ae/Be stars The Astrophysical Journal. ,vol. 613, pp. 1049- 1071 ,(2004) , 10.1086/423314
Francesco Palla, Steven W Stahler, None, The Birthline for Intermediate-Mass Stars The Astrophysical Journal. ,vol. 360, ,(1990) , 10.1086/185809
Bram Acke, C.P. Dullemond, M.E. van den Ancker, [O I] 6300 Å emission in Herbig Ae/Be systems: Signature of Keplerian rotation Astronomy and Astrophysics. ,vol. 436, pp. 209- 230 ,(2005) , 10.1051/0004-6361:20042484
D. de Winter, M. E. van den Ancker, A. Maira, P. S. Thé, H. R. E. Tjin A Djie, I. Redondo, C. Eiroa, F. J. Molster, A photometric catalogue of southern emission-line stars ?;?? Astronomy and Astrophysics. ,vol. 380, pp. 609- 614 ,(2001) , 10.1051/0004-6361:20011476
F. Praderie, C. Catala, T. Simon, A. M. Boesgaard, Short-term spectral variability in AB Aurigae - Clues for activity in Herbig AE stars. I - The ultraviolet lines of MG II and Fe II The Astrophysical Journal. ,vol. 303, pp. 311- ,(1986) , 10.1086/164076