Collimation of astrophysical jets: The proto-planetary nebula He 3-1475

被引:55
作者
Borkowski, KJ [1 ]
Blondin, JM [1 ]
Harrington, JP [1 ]
机构
[1] UNIV MARYLAND,DEPT ASTRON,COLLEGE PK,MD 20742
关键词
hydrodynamics; ISM; jets and outflows; planetary nebulae; individual; (He; 3-1475); shock waves;
D O I
10.1086/310679
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The proto-planetary nebula He 3-1475 was imaged in the [N II] lambda 6584 line with the Wide Field Planetary Camera 2 on board the Hubble Space Telescope. This image has revealed what appear to be large-scale flows being collimated into narrow bipolar jets. This is a unique object: we may be observing the actual collimation process of an astrophysical jet. Analytical models and hydrodynamical simulations suggest that the jet in He 3-1475 may be produced by purely hydrodynamical means, through focusing of a weakly collimated bipolar outflow into jets by oblique radiative shocks.
引用
收藏
页码:L97 / &
页数:5
相关论文
共 21 条
[1]  
Bakker EJ, 1996, ASTRON ASTROPHYS, V307, P869
[2]   HE-3-1475 AND ITS JETS [J].
BOBROWSKY, M ;
ZIJLSTRA, AA ;
GREBEL, EK ;
TINNEY, CG ;
HEKKERT, PT ;
VANDESTEENE, GC ;
LIKKEL, L ;
BEDDING, TR .
ASTROPHYSICAL JOURNAL, 1995, 446 (02) :L89-L92
[3]  
CANTO J, 1980, ASTRON ASTROPHYS, V86, P327
[4]  
CANTO J, 1988, ASTRON ASTROPHYS, V192, P287
[5]   THE PIECEWISE PARABOLIC METHOD (PPM) FOR GAS-DYNAMICAL SIMULATIONS [J].
COLELLA, P ;
WOODWARD, PR .
JOURNAL OF COMPUTATIONAL PHYSICS, 1984, 54 (01) :174-201
[6]   ON HOT SPOTS AND THE QUESTION OF VERY NARROW COLLIMATION OF RADIO JETS [J].
EICHLER, D .
ASTROPHYSICAL JOURNAL, 1982, 263 (02) :571-575
[7]   A mechanism for the production of jets and ansae in planetary nebulae [J].
Frank, A ;
Balick, B ;
Livio, M .
ASTROPHYSICAL JOURNAL, 1996, 471 (01) :L53-&
[8]   Hydrodynamical models of outflow collimation in young stellar objects [J].
Frank, A ;
Mellema, G .
ASTROPHYSICAL JOURNAL, 1996, 472 (02) :684-702
[9]   A search for OH maser emission from post-asymptotic giant branch stars [J].
Hekkert, PL ;
Chapman, JM .
ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES, 1996, 119 (03) :459-481
[10]  
HEKKERT PT, 1991, ASTRON ASTROPHYS, V248, P209