ACCURATE CALCULATION OF THE ISOTOPE SHIFT AND HYPERFINE-STRUCTURE IN THE BORON (B-II) LINE AT 1362 ANGSTROM

被引:20
作者
JONSSON, P
JOHANSSON, SG
FISCHER, CF
机构
[1] LUND UNIV,DEPT PHYS,S-22362 LUND,SWEDEN
[2] LUND UNIV,DEPT PHYS,S-22362 LUND,SWEDEN
[3] VANDERBILT UNIV,DEPT COMP SCI,NASHVILLE,TN 37235
关键词
ATOMIC DATA; LINE; IDENTIFICATION; GALAXY; EVOLUTION; ULTRAVIOLET; GENERAL;
D O I
10.1086/187409
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
An extensive multiconfiguration Hartree-Fock (MCHF) calculation of the isotope shift and hyperfine structure in the resonance line of B II at 1362 angstrom has been performed. The calculated B-11-B-10 isotope shift is 13.3 mangstrom with an estimated uncertainty of 1%. The calculated interaction constants A and B give a hyperfine structure splitting of less than 0.45 mangstrom for both isotopes. The size of the isotope shift in the B II line is similar to the limit of detection in high-resolution observations with the Goddard High Resolution Spectrograph aboard the Hubble Space Telescope when side A becomes operational after the service mission.
引用
收藏
页码:L45 / L48
页数:4
相关论文
共 20 条
[1]  
CARLSSON J, 1994, IN PRESS PHYS REV A
[2]   IONIZATION-POTENTIAL FOR GROUND-STATES OF BERYLLIUMLIKE SYSTEMS [J].
CHUNG, KT ;
ZHU, XW ;
WANG, ZW .
PHYSICAL REVIEW A, 1993, 47 (03) :1740-1751
[3]   ISOTOPE SHIFTS OF SOME ULTRAVIOLET TRANSITIONS OF 1ST ROW ELEMENTS [J].
CLARK, CW .
ASTROPHYSICAL JOURNAL, 1984, 285 (01) :322-324
[4]  
DUNCAN DK, 1992, AP J, V378, P17
[5]  
EDVARDSSON B, 1994, UNPUB A A
[6]   DETECTION OF BORON, COBALT, AND OTHER WEAK INTERSTELLAR LINES TOWARD ZETA-OPHIUCHI [J].
FEDERMAN, SR ;
SHEFFER, Y ;
LAMBERT, DL ;
GILLILAND, RL .
ASTROPHYSICAL JOURNAL, 1993, 413 (01) :L51-L54
[7]   A PROGRAM TO COMPUTE ISOTOPE SHIFTS IN ATOMIC SPECTRA [J].
FISCHER, CF ;
SMENTEKMIELCZAREK, L ;
VAECK, N ;
MIECZNIK, G .
COMPUTER PHYSICS COMMUNICATIONS, 1993, 74 (03) :415-431
[8]   THE MCHF ATOMIC-STRUCTURE PACKAGE [J].
FISCHER, CF .
COMPUTER PHYSICS COMMUNICATIONS, 1991, 64 (03) :369-398
[9]   CONVERGENCE STUDIES OF MCHF CALCULATIONS FOR BE AND LI- [J].
FISCHER, CF .
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1993, 26 (05) :855-862
[10]   A 25-MA ISOTOPE SHIFT IN B-I AT 2090-A - A POSSIBLE DIAGNOSTIC OF THE COSMIC B-11 B-10 RATIO [J].
JOHANSSON, SG ;
LITZEN, U ;
KASTEN, J ;
KOCK, M .
ASTROPHYSICAL JOURNAL, 1993, 403 (01) :L25-L28