The H+ region contribution to [C II] 158-μm emission

被引：36
作者：
Abel, N. P. [1 ]
机构：
[1] Univ Kentucky, Dept Phys & Astron, Lexington, KY 40506 USA
来源：
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2006年 / 368卷 / 04期
关键词：
equation of state; line : formation; HII regions; infrared : general;
D O I：
10.1111/j.1365-2966.2006.10282.x
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The [CII] 158-mu m line is an important emission-line diagnostic in photodissociation regions (PDRs), but this emission line can also emerge from ionized gas. This work calculates the contribution of [C II] emission from ionized gas over a wide range of parameter space by considering the simplified case of an H+ region and PDR in pressure equilibrium. Additionally, these calculations also predict the strong correlation observed between [N II] 205-mu m emission and [C II] discussed by previous authors. Overall, the results of these calculations have wide-ranging applications to the interpretation of [C II] emission in astrophysical environments.
引用
收藏
页码：1949 / 1958
页数：10
相关论文
共 37 条
[1]   The HII region/PDR connection: Self-consistent calculations of physical conditions in star-forming regions [J].
Abel, NP ;
Ferland, GJ ;
Shaw, G ;
van Hoof, PAM .
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2005, 161 (01) :65-95
[2]   THE PHOTOELECTRIC HEATING MECHANISM FOR VERY SMALL GRAPHITIC GRAINS AND POLYCYCLIC AROMATIC-HYDROCARBONS [J].
BAKES, ELO ;
TIELENS, AGGM .
ASTROPHYSICAL JOURNAL, 1994, 427 (02) :822-838
[3]   PHYSICAL CONDITIONS IN THE ORION NEBULA AND AN ASSESSMENT OF ITS HELIUM ABUNDANCE [J].
BALDWIN, JA ;
FERLAND, GJ ;
MARTIN, PG ;
CORBIN, MR ;
COTA, SA ;
PETERSON, BM ;
SLETTEBAK, A .
ASTROPHYSICAL JOURNAL, 1991, 374 (02) :580-609
[4]   Fine-structure excitation of C+ and Si+ by atomic hydrogen [J].
Barinovs, G ;
van Hemert, MC ;
Krems, R ;
Dalgarno, A .
ASTROPHYSICAL JOURNAL, 2005, 620 (01) :537-541
[5]   The dust content and opacity of actively star-forming galaxies [J].
Calzetti, D ;
Armus, L ;
Bohlin, RC ;
Kinney, AL ;
Koornneef, J ;
Storchi-Bergmann, T .
ASTROPHYSICAL JOURNAL, 2000, 533 (02) :682-695
[6]   THE RELATIONSHIP BETWEEN INFRARED, OPTICAL, AND ULTRAVIOLET EXTINCTION [J].
CARDELLI, JA ;
CLAYTON, GC ;
MATHIS, JS .
ASTROPHYSICAL JOURNAL, 1989, 345 (01) :245-256
[7]   THE INTERSTELLAR-MEDIUM IN THE STARBURST REGIONS OF NGC-253 AND NGC-3256 [J].
CARRAL, P ;
HOLLENBACH, DJ ;
LORD, SD ;
COLGAN, SWJ ;
HAAS, MR ;
RUBIN, RH ;
ERICKSON, EF .
ASTROPHYSICAL JOURNAL, 1994, 423 (01) :223-236
[8]   Accurate hydrogen spectral simulations with a compact model atom [J].
Ferguson, JW ;
Ferland, GJ .
ASTROPHYSICAL JOURNAL, 1997, 479 (01) :363-370
[9]  
FERLAND GJ, 1998, PASP, V110, P76
[10]  
FERLAND GJ, 2002, BRIEF INTRO CLOUDY
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