Radio recombination lines from inner galaxy diffuse gas. I. High-sensitivity observations: He+/H+ and carbon

Astrophysical Journal

Volumn 462, Issue 1 PART I, 1996, Pages 326-338

  Heiles, Carl ^a   Koo, Bon Chul ^b   Levenson, N A ^a   Reach, William T ^c  

^a UNIVERSITY OF CALIFORNIA   (United States)

^b Seoul National University   (South Korea)

^c UNIVERSITIES SPACE RESEARCH ASSOCIATION   (United States)

Author keywords

H II regions; ISM: abundances; Radio lines: ISM

Indexed keywords

EID: 21344458087     PISSN: 0004637X     EISSN: 15384357     Source Type: Journal    
DOI: 10.1086/177154     Document Type: Article

References (62)

1. Balser, D. S., Bania, T. M., Brockway, C. J., Rood R. T., & Wilson, T. L. 1994, ApJ, 430, 667
2. Bennett, C. L., et al. 1994, ApJ, 434, 587
3. Boesgaard, A. M., & Steigman, G. 1985, ARA&A, 23, 319
4. Brocklehurst, M. 1970, MNRAS, 148, 417
5. Brown, R. L., Lockman, F. J., & Knapp, G. R. 1978, ARA&A, 16, 445
6. Cassinelli, J. P., et al. 1995, ApJ, 438, 932
7. Cersosimo, J. C. 1990a, ApJ, 349, 67
8. _. 1990b, in Radio Recombination Lines: 25 Years of Investigation, ed. M. A. Gordon & R. L. Sorochenko (Dordrecht: Kluwer), 237
9. Churchwell, E., Smith, L. F., Mathis, J., Mezger, P. G., & Huchtmeier, W. 1978, A&A, 70, 719
10. Cooper, B. F. C. 1976, in Methods Exp. Phys., 12B, 280
11. Cox, P., Krügel, E., & Mezger, P. G. 1986, A&A, 155, 380
12. Domgörgen, H & Mathis, J. S. 1994, ApJ, 428, 647
13. Dupree, A. K. 1972, ApJ, 173, 293
14. _. 1974, ApJ, 187, 25
15. Goldberg, L. 1966, ApJ, 144, 1225
16. Güsten, R., & Mezger, P. G. 1982, Vistas Astron., 26, 159 (GM)
17. Heiles, C. 1989, ApJ, 336, 808
18. Heiles, C. 1992, in Evolution of Interstellar Matter and Dynamics of Galaxies, ed. J. Palous, W. B. Burton, & P. O. Lindblad (Cambridge: Cambridge Univ. Press), 12
19. _. 1993a, in Reviews in Modern Astronomy 6: Stellar Evolution and Interstellar Matter, ed. G. Klare (Hamburg: Astronomische Gesellschaft), 19
20. _. 1993b, in Star Formation, Galaxies and the Interstellar Medium, ed. J. Franco, F. Ferrni, & G. Tenorio-Tagle (Cambridge: Cambridge Univ. Press), 245
21. _. 1994, ApJ, 436, 720
22. Heiles, C, Reach, W. T., & Koo, B.-C. 1995, ApJ, submitted (HRK)
23. Hollenbach, D. & McKee, C. F. 1989, ApJ, 342, 306
24. Hollenbach, D. J., Takahashi, T., & Tielens, A. G. G. M. 1991, ApJ, 377, 192 (HTT)
25. Koo, B.-C., Heiles, C., & Reach, W. T. 1992, ApJ, 390, 108
26. Kudritzki, R., Gabler, D., Kunze, A. W. A., & Pauldrach, J. 1991, in Massive Stars in Starbursts, ed. C. Leitherer, N. R. Walborn, T. M. Heckman, & C. A. Norman (Cambridge: Cambridge Univ. Press), 59
27. Kulkarni, S. R., & Heiles, C. 1987, in Interstellar Processes, ed. D. J. Hollenbach & H. A. Thronson, Jr. (Dordrecht: Reidel), 87
28. Kurucz, R.L. 1979, ApJS, 40 l
29. _. 1992, in IAU Symp. 149, The Stellar Populations of Galaxies, ed. B. Barbuy & A. Renzini (Dordrecht: Kluwer), 225
30. Lockman, F. J. 1976, ApJ, 209, 429
31. _. 1980, in Radio Recombination Lines, ed. P. A. Shaver, (Dordrecht: Reidel), 185
32. Mathis, J. S. 1986, ApJ, 301, 423
33. McGee, R. X., & Newton, L. M. 1981, MNRAS, 196, 889
34. McKee, C. F. 1989, ApJ, 345, 782
35. Maeder, A. 1991, in Massive Stars in Starbursts, ed. C. Leitherer, N. R. Walborn, T. M. Heckman, & C. A. Norman (Cambridge: Cambridge Univ. Press), 97
36. Menzel, D. H. 1968, Nature, 218, 756
37. Mezger, P. G. 1978, A&A, 70, 565
38. Mezger, P. G., & Smith, L. F. 1976, A&A, 47, 143
39. Miller, W. W. III, & Cox, D. P. 1993, ApJ, 417, 579
40. Müller, P., Reif, K., & Reich, W. 1987, A&A, 183, 327
41. Osterbrock, D. E. 1989, Astrophysics of Gaseous Nebulae and Active Galactic Nuclei (Mill Valley: Univ. Science Books), 24
42. Pankonin, V. 1980, in Radio Recombination Lines, ed. P. A. Shaver (Dordrecht: Reidel), 111
43. Petuchowski, S. J., & Bennett, C. L. 1993, ApJ, 405, 591
44. Peimbert, M., Rodriguez, L. F., Bania, T. M., Rood, R. T., & Wilson, T. L. 1992, ApJ, 395, 484
45. Reich, W., Fürst, E., Reich, P., & Reif, K. 1990, A&AS, 85, 633
46. Reifenstein, E. C., Wilson, T. L., Burke, B. F., Mezger, P. G., & Altenhoff, W. J. 1970, A&A, 4, 357
47. Reynolds, R. J. 1991, ApJ, 372, L17
48. Reynolds, R. J., & Tufte, S. L. 1995, ApJ, 439, L17
49. Roelfsema, P. R. 1990, in Radio Recombination Lines: 25 Years of Investigation, ed. M. A. Gordon & R. L. Sorochenko (Dordrecht: Kluwer), 259
50. Roelfsema, P. R., & Goss, W. M. 1992, A&A, Rev., 4, 161
51. Rood, R. T., Bania, T. M., & Wilson, T. L. 1984, ApJ, 280, 629
52. Scalo, J. M. 1986, Fundam. Cosmic Phys., 11, 1
53. Schaller, G., Schaerer, D., Meynet, G., & Maeder, A. 1992, A&AS, 96, 269
54. Sciama, D. W. 1990, ApJ, 364, 549
55. Sejnowski, T. J., & Hjellming, R. M. 1969, ApJ, 156, 915
56. Shaver, P. A., McGee, R. X., Newton, L. M., Danks, A. C., & Pottasch, S. R. 1983, MNRAS, 204, 53
57. Shibai, H., et al. ApJ, 374, 522
58. Spitzer, L. 1978, Physical Processes in the Interstellar Medium (New York: Wiley)
59. Taylor, J. H., & Cordes, J. M. 1993, ApJ, 411, 674
60. Vacca, W. D., Garmany, C. D., & Shull, J. M. 1995, ApJ, preprint (VGS)
61. Walmsley, C. M. 1980, in Radio Recombination Lines, ed. P. A. Shaver (Dordrecht: Reidel), 37
62. Walmsley, C. M., & Watson, W. D. 1982, ApJ, 260, 317