What produces the diffuse X-ray emission from the Orion nebula? I. Simple spherical models

被引：26
作者：
Arthur, S. J. [1 ]
机构：
[1] Univ Nacl Autonoma Mexico, Ctr Radioastron & Astrofis, Morelia 58090, Michoacan, Mexico
来源：
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2012年 / 421卷 / 02期
关键词：
hydrodynamics; stars:; winds; outflows; ISM: bubbles; H II regions; H-II-REGIONS; SELF-SIMILAR EVOLUTION; WIND-BLOWN BUBBLES; MASSIVE STARS; INTERSTELLAR BUBBLES; IONIZING-RADIATION; CROSS-SECTIONS; ENERGY-BALANCE; FLOWS; M17;
D O I：
10.1111/j.1365-2966.2011.20388.x
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The expansion of stellar wind bubbles inside evolving H II regions is studied in spherical symmetry, with stellar wind parameters and ionizing photon rate appropriate to theta(1)OriC, the main exciting source of the Orion nebula. The effects of mass loading due to embedded proplyds and thermal conduction at the edge of the hot, shocked stellar wind bubble on the expansion are investigated. The predicted X-ray luminosities and spectra of these models are calculated and compared to published observations. The models all have excess emission at higher energies compared to the observations. This emission comes from hot gas behind the stellar wind shock and its temperature depends solely on the stellar wind velocity, which for theta(1)OriC is well established. Possible mechanisms for lowering the temperature of this gas are discussed.
引用
收藏
页码：1283 / 1297
页数：15
相关论文
共 58 条
[1]   ABUNDANCES OF THE ELEMENTS - METEORITIC AND SOLAR [J].
ANDERS, E ;
GREVESSE, N .
GEOCHIMICA ET COSMOCHIMICA ACTA, 1989, 53 (01) :197-214
[2]  
[Anonymous], SRONSPEXTRPB03
[3]  
[Anonymous], J REV MEX ASTROFIS C
[4]   Radiation-magnetohydrodynamic simulations of H II regions and their associated PDRs in turbulent molecular clouds [J].
Arthur, S. J. ;
Henney, W. J. ;
Mellema, G. ;
De Colle, F. ;
Vazquez-Semadeni, E. .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2011, 414 (02) :1747-1768
[5]   Off-center H II regions in power-law density distributions [J].
Arthur, S. Jane .
ASTROPHYSICAL JOURNAL, 2007, 670 (01) :471-479
[6]   Hydrodynamics of cometary compact HII regions [J].
Arthur, S. Jane ;
Hoare, M. G. .
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2006, 165 (01) :283-306
[7]   The effects of dust on compact and ultracompact HII regions [J].
Arthur, SJ ;
Kurtz, SE ;
Franco, J ;
Albarrán, MY .
ASTROPHYSICAL JOURNAL, 2004, 608 (01) :282-296
[8]   PHOTOELECTRIC ABSORPTION CROSS-SECTIONS WITH VARIABLE ABUNDANCES [J].
BALUCINSKACHURCH, M ;
MCCAMMON, D .
ASTROPHYSICAL JOURNAL, 1992, 400 (02) :699-700
[9]   Relative effects of ionizing radiation and winds from O-type stars on the structure and dynamics of HII regions [J].
Capriotti, ER ;
Kozminski, JF .
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC, 2001, 113 (784) :677-691
[10]  
Comeron F, 1997, ASTRON ASTROPHYS, V326, P1195
123456