The role of velocity redistribution in enhancing the intensity of the He II 304 Å line in the quiet-sun spectrum

Astrophysical Journal

Volumn 535, Issue 1 PART 1, 2000, Pages 438-453

  Andretta, Vincenzo ^a,c,d   Jordan, Stuart D ^a   Brosius, Jeffrey W ^a   Davila, Joseph M ^a   Thomas, Roger J ^a   Behring, William E ^a   Thompson, William T ^a   Garcia, Adriana ^b  

^a NASA GODDARD SPACE FLIGHT CENTER   (United States)

^b UNIVERSITY OF COIMBRA   (Portugal)

^c CATHOLIC UNIVERSITY OF AMERICA   (United States)

^d INAF OSSERVATORIO ASTRONOMICO DI CAPODIMONTE   (Italy)

Author keywords

Line: formation; Line: profiles; Sun: atmospheric motions; Sun: chromosphere; Sun: corona; Sun: transition region

Indexed keywords

EID: 0040778228     PISSN: 0004637X     EISSN: 15384357     Source Type: Journal    
DOI: 10.1086/308833     Document Type: Article

References (44)

1. Aggarwal, K. M. 1993, ApJS, 85, 197
2. Aggarwal, K. M., Callaway, J., Kingston, A. E., & Unnikrishnan, K. 1992, ApJS, 80, 473
3. Anderson, S. W. 1994, ApJ, 437, 860
4. Anderson, S. W., Raymond, J. C., & van Ballegooijen, A. 1996, ApJ, 457, 939
5. Andretta, V., & Jones, H. P. 1997, ApJ, 489, 375
6. Arnaud, M., & Rothenflug, R. 1985, A&AS, 60, 425
7. Athay, R. G. 1988, ApJ, 329, 482
8. Avrett, E. W. 1999, in Eighth SOHO Workshop, Plasma Dynamics and Diagnostics in the Solar Transition Region and Corona (ESA SP-446; Noordwijk: ESA), 141
9. Beckers, J. M. 1968, Sol. Phys., 3, 367
10. Brekke, P., Thompson, W. T., Woods, T. N., & Eparvier, F. G. 2000, ApJ, in press
11. Brooks, D. H., et al. 1999, A&A, 347, 277
12. Brosius, J. W., Davila, J. M., Thomas, R. J., & Monsignori-Fossi, B. C. 1996, ApJS, 106, 143
13. Cushman, G. W., & Rense, W. A. 1978, Sol. Phys., 58, 299
14. Dere, K. P., Landi, E., Mason, H. E., & Monsignori-Fossi, B. C. 1997, A&AS, 125, 149
15. Dere, K. P., & Mason, H. E. 1993, Sol. Phys., 144, 217
16. Falconer, D. A., Jordan, S. D., Brosius, J. W., Davila, J. M., Thomas, R. J., Andretta, V., & Hara, H. 1998, Sol. Phys., 180, 179
17. Fontenla, J. M., Avrett, E. H., & Loeser, R. 1993, ApJ, 406, 319
18. Grossmann-Doerth, U., & Schmidt, W. 1992, A&A, 264, 236
19. Heinzel, P., & Schmieder, B. 1994, A&A, 282, 939
20. Howard, R. F., Harvey, J. W., & Forgach, S. 1990, Sol. Phys., 130, 295
21. Jones, H. P., & Skumanich, A. 1980, ApJS, 42, 221
22. Jordan, C. 1975, MNRAS, 170, 429
23. _. 1980, Philos. Trans. R. Soc. London, A297, 541
24. Jordon, S. D. 1994, IAU Colloq. 144, Solar Coronal Structures, ed. V. Rušin, P. Heinzel, & J.-C. Vial (Tatranská Lomnika: Veda), 415
25. Jordan, S. D., Thompson, W. T., Thomas, R. J., & Neupert, W. M. 1993, ApJ, 406, 346
26. Kastner, S. O., & Bhatia, A. K. 1997, J. Quant. Spectrosc. Radiat. Transfer, 58, 217
27. _. 1998, MNRAS, 298, 763
28. Kohl, J. L. 1977, ApJ, 211, 958
29. Landi, E., Landini, M., Pike, C. D., & Mason, H. 1997, Sol. Phys., 175, 553
30. Lang, J., et al. 1999, The Laboratory Calibration of the SOHO Coronal Diagnostic Spectrometer, technical report, RAL-TR-1999-036, Rutherford Appleton Laboratory
31. Macpherson, K. P., & Jordan, C. 1999, MNRAS, 308, 510
32. Mihalas, D. 1978, Stellar Atmospheres (2d ed.; San Francisco: Freeman)
33. Mariska, J. T. 1992, The Solar Transition Region (Cambridge: Cambridge Univ. Press)
34. Milkey, R. W. 1975, ApJ, 199, L131
35. Neupert, W. M., Epstein, G. L., Thomas, R. J., & Thompson, W. T. 1992, Sol. Phys., 137, 87
36. Raymond, J. C., & Doyle, J. G. 1981, ApJ, 247, 686
37. Richard, O., Dziembowski, W. A., Sienkiewicz, R., & Goode, P. R. 1998, A&A, 338, 756
38. Scudder, J. D. 1992a, ApJ, 389, 319
39. _. 1992b, ApJ, 266, 339
40. Shine, R. A., Gerola, H., & Linsky, J. L. 1975, ApJ, 202, L101
41. Swartz, M., et al. 1999, The SERTS-97 Rocket Experiment to Study Activity on the Sun: Flight 36.167-GS on 1997 November 18 (NASA/TP-1999-208640; Goddard Space Flight Center: NASA)
42. Thompson, W. T., & Brekke, P. 1999, Sol. Phys., in press
43. Viñas, A. F., Wong, H. K., & Klimas, A. J. 2000, ApJ, 528, 509
44. Zirin, H. 1988, Astrophysics of the Sun (Cambridge: Cambridge Univ. Press)