Abstract
In our model describing the leakage of ionizing radiation from the Galactic disk into the halo, disk stars can contribute substantially to the ionization of halo objects such as high-velocity clouds and the Magellanic stream. This ionization is produced by a relatively hard radiation field, which can maintain its ionizing effect even at a considerable distance from the plane of the disk.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
R. J. Reynolds and F. Scherb, Astrophys. J. 185, 869 (1973).
J. B. Dove and J. M. Shull, Astrophys. J. 423, 196 (1994).
W. W. Miller III and D. P. Cox, Astrophys. J. 417, 579 (1993).
B. J. Weiner and T. B. Williams, Astron. J. 111, 1156 (1996).
C. Leitherer et al., Astrophys. J. Lett. 454, L19 (1995).
G. J. Madsen, in Extra-Planar Gas, Ed. by R. Braun (Astron. Soc. Pac., San Francisco, 2005); Astron. Soc. Pac. Conf. Ser. 331, 33 (2005); astroph/0409476 (2004).
L. M. Haffner, Astrophys. J. 523, 223 (1999).
K. V. Bychkov and M. A. Zaitsev, Astron. Zh. 83 (2006) (in press).
V. V. Sobelev, Course of Theoretical Astrophysics (Nauka, Moscow, 1975) [in Russian].
S. A. Kaplan and S. B. Pikel’ner, Physics of the Interstellar Medium (Nauka, Moscow, 1979) [in Russian].
S. A. Kaplan and S. B. Pikel’ner, The Interstellar Medium (Fizmatgiz, Moscow, 1963) [in Russian].
S. M. Kent et al., Astrophys. J. 378, 131 (1991).
E. J. de Geus et al., Astrophys. J. Lett. 413, L97 (1993).
R. F. G. Wyse et al., Publ. Astron. Soc. Aust. 15, 118 (1998).
A. Songaila, Astrophys. J. 248, 945 (1981).
W. D. Vacca et al., Astrophys. J. 460, 914 (1996).
B. Moore and M. Davis, Mon. Not. R. Astron. Soc. 270, 209 (1994).
C. L. Bennett et al., Astrophys. J. 436, 423 (1994).
Author information
Authors and Affiliations
Additional information
Original Russian Text © M.A. Zaitsev, 2006, published in Astronomicheskiĭ Zhurnal, 2006, Vol. 83, No. 6, pp. 556–559.