Complutense University Library

Evidence for an ionized rotating structure around RW Aur

Gómez de Castro, Ana Inés and Verdugo, Eva (2004) Evidence for an ionized rotating structure around RW Aur. Astrophysics and space science, 292 . pp. 691-696. ISSN 0004-640X

[img] PDF
Restricted to Repository staff only until 31 December 2020.

78kB

Official URL: http://www.springerlink.com/content/t4357813823056m8/fulltext.pdf

View download statistics for this eprint

==>>> Export to other formats

Abstract

Profiles of the UV semiforbidden lines of C III](1908) and Si III](1892) of RW Aur have been obtained with the HST/STIS. The C III](1908) profile shows two high velocity components at v = +/- 170 km s(-1) and a central one. The Si III](1892) profile is very broad (FWHM = 293 km s(-1)) and the high velocity components are unresolved. It is shown that the high velocity components are most probably produced in a rotating belt alike the detected in other sources of bipolar outflows. A radius between 2.7 R-* and the corotation radius (6.1 R-*) is derived and a log T-e ( K) similar or equal to 4.7 and log n(e)(cm(-3)) = 11.6 are estimated. The belt is clumpy and the most likely source of heating is local X-rays radiation, probably associated with the release of magnetic energy.


Item Type:Article
Additional Information:

International Workshop on Magnetic Fields and Star Formation, APR 21-25, 2003, Madrid, SPAIN

Uncontrolled Keywords:T tauri stars; spectrograph observations; transition region; emission-line; young stars; asymmetries; accretion; aurigae; jet; chromosphere; stars : pre-main-sequence; stars : T tauri; stars : individual : RW aur
Subjects:Sciences > Mathematics > Astronomy
ID Code:16114
References:

Andretta, V. and Jones, H.P.: 1997, ApJ 489, 375.

Brandt et al.: 2001, AJ 121, 2173.

Dougados, C., Cabrit, S., Lavalley, C. and M´enard, F.: 2000, A&A 357, L61.

Gahm, G.F., Petrov, P.P., Duemmler, R., Gameiro, J.F. and Lago, M.T.V.T.: 1999, A&A 352, L95.

Gómez de Castro, A.I.: 2002, MNRAS 332, 409.

Gómez de Castro, A.I. and Franqueira, M.: 1997, ULDA Access Guide to T Tauri stars observed with IUE, ESA-SP 1205, ESA Publisher, Noordwijk, The Netherlands.

Gómez de Castro, A.I. and Lamzin, S.A.: 1999, MNRAS 304, L41.

Gómez de Castro, A.I. and Verdugo, E.: 2001, ApJ 548, 976.

Gómez de Castro, A.I. and Verdugo, E.: 2002, Highlights of Spanish Astrophysics, III Dordrecht: Kluwer Academic Publishers, Gallego, J., Zemoreno, J. and Cardiel, N. (eds.), p. 361.

Gómez de Castro, A.I. and Verdugo, E.: 2003, ApJ, 597, 443.

Haman, F.: 1994, ApJSS 93, 485.

Hirth, G.A., Mundt, R. and Solf, J.: 1997, A&ASS 126,437.

Hirth, G.A., Mundt, R., Solf, J. and Ray, T.P.: 1994, ApJ 427, L99.

L´opez-Mart´ın, L., Cabrit, S. and Dougados, C.: 2003, A& A 405, L1.

Macpherson, K.P. and Jordan, C.: 1999, MNRAS 308, 510.

Milkey, R.W.: 1975, ApJ 199, L131.

Petrov, P.P., Gahm, G.F., Gameiro, J.F., Duemmler, R., Ilyin, I.V., Laakkonen, T., Lago, M.T.V.T., and Tuominen, I.: 2001, A&A 369, 993.

Stout–Batalha, N.M., Batlha, C.C. and Basri, G.S.: 2000, ApJ 532, 474.

Woitas, J., Ray, T.P., Bacciotti, F., Davis, C.J. and Eisloeffel, J.: 2002, ApJ 580 336.

Deposited On:31 Jul 2012 08:29
Last Modified:06 Feb 2014 10:38

Repository Staff Only: item control page