Browse > Article
http://dx.doi.org/10.5303/JKAS.2016.49.3.109

INFRARED [FE II] EMISSION LINES FROM RADIATIVE ATOMIC SHOCKS  

KOO, BON-CHUL (Department of Physics and Astronomy, Seoul National University)
RAYMOND, JOHN C. (Harvard-Smithsonian Center for Astrophysics)
KIM, HYUN-JEONG (Department of Physics and Astronomy, Seoul National University)
Publication Information
Journal of The Korean Astronomical Society / v.49, no.3, 2016 , pp. 109-122 More about this Journal
Abstract
[Fe II] emission lines are prominent in the infrared (IR) and important as diagnostic tools for radiative atomic shocks. We investigate the emission characteristics of [Fe II] lines using a shock code developed by Raymond (1979) with updated atomic parameters. We first review general characteristics of the IR [Fe II] emission lines from shocked gas, and derive their fluxes as a function of shock speed and ambient density. We have compiled available IR [Fe II] line observations of interstellar shocks and compare them to the ratios predicted from our model. The sample includes both young and old supernova remnants in the Galaxy and the Large Magellanic Cloud and several Herbig-Haro objects. We find that the observed ratios of the IR [Fe II] lines generally fall on our grid of shock models, but the ratios of some mid-IR lines, e.g., [Fe II] 35.35 µm/[Fe II] 25.99 µm, [Fe II] 5.340 µm/[Fe II] 25.99 µm, and [Fe II] 5.340 µm/[Fe II] 17.94 µm, are significantly offset from our model grid. We discuss possible explanations and conclude that while uncertainties in the shock modeling and the observations certainly exist, the uncertainty in atomic rates appears to be the major source of discrepancy.
Keywords
atomic processes; hydrodynamics; infrared; ISM; shock waves;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Smith, N., & Hartigan, P. 2006, Infrared [Fe II] Emission from P Cygni's Nebula: Atomic Data, Mass, Kinematics, and the 1600 AD Outburst, ApJ, 638, 1045   DOI
2 Sankrit, R., Raymond, J. C., Bautista, M., et al. 2014, Spitzer IRS Observations of the XA Region in the Cygnus Loop Supernova Remnant, ApJ, 787, 3   DOI
3 Shull, J. M., & McKee, C. F. 1979, Theoretical Models of Interstellar Shocks. I - Radiative Transfer and UV Precursors, ApJ, 227, 131   DOI
4 Slavin, J. D., Dwek, E., & Jones, A. P. 2015, Destruction of Interstellar Dust in Evolving Supernova Remnant Shock Waves, ApJ, 803, 7   DOI
5 Verner, D. A., Ferland, G. J., Korista, K. T., & Yakovlev, D. G. 1996, Atomic Data for Astrophysics. II. New Analytic FITS for Photoionization Cross Sections of Atoms and Ions, ApJ, 465, 487   DOI
6 Walmsley, C. M., Natta, A., Oliva, E., & Testi, L. 2000, The Structure of the Orion Bar, A&A, 364, 301
7 Zhang, H. L., & Pradhan, A. K. 1995, Atomic Data from the Iron Project. VI. Collision Strengths and Rate Coefficients for Fe II, A&A, 293, 953
8 Ramsbottom, C. A., Hudson, C. E., Norrington, P. H., & Scott, M. P. 2007, Electron-Impact Excitation of Fe II. Collision Strengths and Effective Collision Strengths for Low-Lying Fine-Structure Forbidden Transitions, A&A, 475, 765   DOI
9 Oliva, E., Marconi, A., Maiolino, R., et al. 2001, NICS-TNG Infrared Spectroscopy of NGC 1068: The First Extragalactic Measurement of [P II] and a New Tool to Constrain the Origin of [Fe II] Line Emission in Galaxies, A&A, 369, L5   DOI
10 Pradhan, A. K., & Nahar, S. N. 2011, Atomic Astrophysics and Spectroscopy, American Astronomical Society Meeting Abstracts
11 Raymond, J. C. 1979, Shock Waves in the Interstellar Medium, ApJS, 39, 1   DOI
12 Raymond, J. C., Ghavamian, P., Williams, B. J., Blair, W. P., Borkowski, K. J., Gaetz, T. J. & Sankrit, R. 2013, Grain Destruction in a Supernova Remnant Shock Wave, ApJ, 778, 161   DOI
13 Heiles, C., & Troland, T. H. 2005, The Millennium Arecibo 21 Centimeter Absorption-Line Survey. IV. Statistics of Magnetic Field, Column Density, and Turbulence, ApJ, 624, 773   DOI
14 Graham, J. R., Wright, G. S., & Longmore, A. J. 1990, Infrared Spectroscopy and Imaging of the Crab Nebula, ApJ, 352, 172   DOI
15 Hollenbach, D., Chernoff, D. F., & McKee, C. F. 1989, Infrared Diagnostics of Interstellar Shocks, in Proceedings of the 22nd Eslab Symposium, ed. B. H. Kaldeich (ESA SP-290; European Space Agency), 245
16 Hartigan, P., Raymond, J., & Pierson, R. 2004, Infrared Emission Lines of [Fe II] as Diagnostics of Shocked Gas in Stellar Jets, ApJL, 614, L69   DOI
17 Neufeld, D. A., Hollenbach, D. J., Kaufman, M. J., et al. 2007, Spitzer Spectral Line Mapping of Supernova Remnants. I. Basic Data and Principal Component Analysis, ApJ, 664, 890   DOI
18 Reilman, R. F., & Manson, S. T. 1979, Photoabsorption Cross Sections for Positive Atomic Ions with Z Equal to or Less than 30, ApJS, 40, 815   DOI
19 Rodríguez-Ardila, A., Pastoriza, M. G., Viegas, S., Sigut, T. A. A., & Pradhan, A. K. 2004, Molecular Hydrogen and [Fe II] in Active Galactic Nuclei, A&A, 425, 457   DOI
20 Russell, S. C., & Dopita, M. A. 1992, Abundances of the Heavy Elements in the Magellanic Clouds. III - Interpretation of Results, ApJ, 384, 508   DOI
21 Oliva, E., Moorwood, A. F. M., & Danziger, I. J. 1989, Infrared Spectroscopy of Supernova Remnants, A&A, 214, 307
22 Neufeld, D. A., Melnick, G. J., Sonnentrucker, P., et al. 2006, Spitzer Observations of HH 54 and HH 7-11: Mapping the H2 Ortho-to-Para Ratio in Shocked Molecular Gas, ApJ, 649, 816   DOI
23 Quinet, P., Le Dourneuf, M., & Zeippen, C. J. 1996, Atomic Data from the IRON Project. XIX. Radiative Rransition Probabilities for Forbidden Lines in Fe II, A&AS, 120, 361   DOI
24 Nisini, B. 2008, IR Spectroscopy of Jets: Diagnostics and HAR Observations, Jets from Young Stars II, 742, 79   DOI
25 Oliva, E., Moorwood, A. F. M., & Danziger, I. J. 1990, Infrared Spectroscopy of Supernova Remnants. II - A Detailed Study of RCW 103, A&A, 240, 453
26 Nisini, B., Caratti o Garatti, A., Giannini, T., & Lorenzetti, D. 2002, 1-2.5 mu m Spectra of Jets from Young Stars: Strong Fe II Smission in HH111, HH240-241 and HH120, A&A, 393, 1035   DOI
27 Koo, B.-C., Lee, Y.-H., Moon, D.-S., Yoon, S.-C., & Raymond, J. C. 2013, Phosphorus in the Young Supernova Remnant Cassiopeia A, Science, 342, 1346   DOI
28 Hewitt, J. W., Rho, J., Andersen, M., & Reach, W. T. 2009, Spitzer Observations of Molecular Hydrogen in Interacting Supernova Remnants, ApJ, 694, 1266   DOI
29 Hollenbach, D., & McKee, C. F. 1989, Molecule Formation and Infrared Emission in Fast Interstellar Shocks. III - Results for J Shocks in Molecular Clouds, ApJ, 342, 306   DOI
30 Koo, B.-C., & Lee, Y.-H. 2015, Near-Infrared Spectroscopy of Young Galactic Supernova Remnants, PKAS, 30, 145
31 Giannini, T., Antoniucci, S., Nisini, B., et al. 2015, Empirical Determination of Einstein A-Coefficient Ratios of Bright [Fe II] Lines, ApJ, 798, 33   DOI
32 Nussbaumer, H., & Storey, P. J. 1988, Transition Probabilities for Forbidden Fe II Infrared Lines, A&A, 193, 327
33 Dinerstein, H. 1995, Infrared Emission Lines as Probes of Gaseous Nebulae, The Analysis of Emission Lines: A Meeting in Honor of the 70th Birthdays of D. E. Osterbrock & M. J. Seaton, 134
34 Dopita, M. A., & Sutherland, R. S. 1995, Spectral Signatures of Fast Shocks. II. Optical Diagnostic Diagrams, ApJ, 455, 468   DOI
35 Dopita, M. A., & Sutherland, R. S. 1996, Spectral Signatures of Fast Shocks. I. Low-Density Model Grid, ApJS, 102, 161   DOI
36 Draine, B. T. 2011, Physics of the Interstellar and Intergalactic Medium by Bruce T. Draine (Princeton: Princeton University Press)
37 Gerardy, C. L., & Fesen, R. A. 2001, Near-Infrared Spectroscopy of the Cassiopeia A and Kepler Supernova Remnants, AJ, 121, 2781   DOI
38 Giannini, T., Calzoletti, L., Nisini, B., et al. 2008, Near-Infrared, IFU Spectroscopy Unravels the Bow-Shock HH99B, A&A, 481, 123   DOI
39 Bautista, M. A., Fivet, V., Ballance, C., et al. 2015, Atomic Data and Spectral Model for Fe II, ApJ, 808, 174   DOI
40 Caulet, A., & Williams, R. M. 2012, Infrared Spectral Mapping of Supernova Remnants. I. N63A and Its Environment, ApJ, 761, 107   DOI
41 Asplund, M., Grevesse, N., Sauval, A. J., & Scott, P. 2009, The Chemical Composition of the Sun, ARA&A, 47, 481   DOI
42 Cox, D. P., & Raymond, J. C. 1985, Preionization-Dependent Families of Radiative Shock Waves, ApJ, 298, 651   DOI
43 Crutcher, R. M., Wandelt, B., Heiles, C., Falgarone, E., & Troland, T. H. 2010, Magnetic Fields in Interstellar Clouds from Zeeman Observations: Inference of Total Field Strengths by Bayesian Analysis, ApJ, 725, 466   DOI
44 Dionatos, O., Jørgensen, J. K., Teixeira, P. S., Güdel, M., & Bergin, E. 2014, Atomic Jet from SMM1 (FIRS1) in Serpens Uncovers Protobinary Companion, A&A, 563, A28   DOI
45 Deb, N. C., & Hibbert, A. 2010, Calculation of Intensity Ratios of Observed Infrared [Fe II] Lines, ApJL, 711, L104   DOI
46 Neufeld, D. A., & Dalgarno, A. 1987, Charge Transfer in Collisions of Doubly Charged Ions of Iron and Nickel with Hydrogen Atoms, Phys. Rev. A, 35, 3142   DOI
47 Deb, N. C., & Hibbert, A. 2011, Radiative Transition Rates for the Forbidden Lines in Fe II, A&A, 536, A74   DOI
48 Allen, M. G., Groves, B. A., Dopita, M. A., Sutherland, R. S., & Kewley, L. J. 2008, The MAPPINGS III Library of Fast Radiative Shock Models, ApJS, 178, 20   DOI
49 Arnaud, M., & Raymond, J. 1992, Iron Ionization and Recombination Rates and Ionization Equilibrium, ApJ, 398, 394   DOI
50 Koo, B.-C., Moon, D.-S., Lee, H.-G., Lee, J.-J., & Matthews, K. 2007, [Fe II] and H2 Filaments in the Supernova Remnant G11.2-0.3: Supernova Ejecta and Presupernova Circumstellar Wind, ApJ, 657, 308   DOI
51 Landi, E., Young, P. R., Dere, K. P., Del Zanna, G., & Mason, H. E. 2013, CHIANTIAn Atomic Database for Emission Lines. XIII. Soft X-Ray Improvements and Other Changes, ApJ, 763, 86   DOI
52 Lee, H.-G., Moon, D.-S., Koo, B.-C., et al. 2013, Wide Integral-Field Infrared Spectroscopy of the Bright [Fe II] Shell in the Young Supernova Remnant G11.2-0.3, ApJ, 770, 143   DOI
53 Nahar, S. N. 1997, Electron-Ion Recombination of Fe II, Phys. Rev. A, 55, 1980   DOI
54 McKee, C. F., Chernoff,D. F., & Hollenbach, D. J. 1984, Infrared Spectroscopy of Interstellar Shocks, in Galactic and Extragalactic Infrared Spectroscopy, eds. M. F. Kessler, J. P. Phillips (Dordrecht: Reidel), 103
55 Montague, R. G., Diserens, M. J., & Harrison, M. F. A. 1984, A Measurement of the Cross Section for Electron Impact Ionisation of Fe+, J. Phys. B, 17, 2085   DOI
56 Mouri, H., Kawara, K., & Taniguchi, Y. 2000, Excitation Mechanism of Near-Infrared [Fe II] Emission in Seyfert and Starburst Galaxies, ApJ, 528, 186   DOI