Extreme helium stars: Non-LTE matters. Helium and hydrogen spectra of the unique objects V652 Her and HD 144941

Astronomy and Astrophysics

Volumn 443, Issue 3, 2005, Pages

  Przybilla, N ^a   Butler, K ^b   Heber, U ^a   Jeffery, C S ^c  

^a UNIVERSITY OF ERLANGEN NUREMBERG   (Germany)

^b UNIVERSITY OF MUNICH   (Germany)

^c ARMAGH OBSERVATORY   (United Kingdom)

Author keywords

Line: formation; Stars: atmospheres; Stars: fundamental parameters; Stars: individual: V652 Her, HD 144941

Indexed keywords

COMPUTATIONAL METHODS; GRAVITATION; HELIUM; HYDROGEN; MATHEMATICAL MODELS; PARAMETER ESTIMATION; SPECTRUM ANALYSIS;

LINE: FORMATION; STARS: ATMOSPHERES; STARS: FUNDAMENTAL PARAMETERS; STARS: INDIVIDUAL: V652 HER, HD 144941;

SOLAR SYSTEM;

EID: 28144458486     PISSN: 00046361     EISSN: None     Source Type: Journal    
DOI: 10.1051/0004-6361:200500195     Document Type: Article

References (19)

1. Auer, L. H., & Mihalas, D. 1972, ApJS, 24, 193
2. Barnard, A. J., Cooper, J., & Shamey, L. J. 1969, A&A, 1, 28
3. Beauchamp, A., & Wesemael, F. 1998, ApJ, 496, 395
4. Bray, I., Burgess, A., Fursa, D. V., & Tully, J. A. 2000, A&AS, 146, 481
5. Butler, K., & Giddings, J. R. 1985, in Newsletter on Analysis of Astronomical Spectra, No. 9 (London: Univ. London)
6. Dimitrijević, M. S., & Sahal-Bréchot, S. 1990, A&AS, 82, 519
7. Fernley, J. A., Taylor, K. T., & Seaton, M. J. 1987, J. Phys. B, 20, 6457
8. Giddings, J. R. 1981, Ph. D. Thesis, Univ. London
9. Harrison, P. M., & Jeffery, C. S. 1997, A&A, 323, 177 (HJ97)
10. Heber, U. 1986, in Hydrogen Deficient Stars and Related Objects, ed. K. Hunger, D. Schönberner, & N. Kameswara Rao (Dordrecht: D. Reidel Publishing Co.), 33
11. Husfeld, D., Butler, K., Heber, U., & Drilling, J. S. 1989, A&A, 222, 150 (HBHD89)
12. Jeffery, C. S. 1996, in Hydrogen-Deficient Stars, ed. C. S. Jeffery, & U. Heber (San Francisco: ASP), 152
13. Jeffery, C. S., Hill, P. W., & Heber, U. 1999, A&A, 346, 491
14. Jeffery, C. S., Woolf, V. M., & Pollacco, D. L. 2001, A&A, 376, 497 (JWP01)
15. Kurucz, R. L. 1996, in Model Atmospheres and Spectrum Synthesis, ed. S. J. Adelman, F. Kupka, & W. W. Weiss (San Francisco: ASP), 160
16. Przybilla, N. 2005, A&A, 443, 293 (P05)
17. Przybilla, N., & Butler, K. 2004, ApJ, 609, 1181 (PB04)
18. Saio, H., & Jeffery, C. S. 2000, MNRAS, 313, 671
19. Sawey, P. M. J., & Berrington, K. A. 1993, At. Data Nucl. Data Tables, 55, 81