Project VeSElkA: Vertical Stratification of Element Abundances in CP stars

被引：8
|
作者：
Khalack, V. R. [1 ]
LeBlanc, F. [1 ]
机构：
[1] Univ Moncton, Dept Phys & Astron, Moncton, NB E1A 3E9, Canada
来源：
ADVANCES IN ASTRONOMY AND SPACE PHYSICS | 2015年 / 5卷 / 01期
关键词：
diffusion; line: profiles; stars: abundances; atmospheres; chemically peculiar; magnetic field; rotation;
D O I：
10.17721/2227-1481.5.3-10
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
A new research project on spectral analysis which aims to characterize the vertical stratification of element abundances in stellar atmospheres of chemically peculiar (CP) stars, is discussed in detail. Some results on detection of vertical abundance stratification in several slowly rotating main sequence CP stars are presented and considered as an indicator of the effectiveness of the atomic diffusion mechanism responsible for the observed peculiarities of chemical abundances. This study is carried out in the frame of Project VeSEIkA (Vertical Stratification of Elements Abundance) for which 34 slowly rotating CP stars have been observed with the ESPaDOnS spectropolarimetre at CFHT.
引用
收藏
页码：3 / 10
页数：8
相关论文
共 50 条
  • [1] Project VeSElkA: a search for the vertical stratification of element abundances in HD 157087
    Khalack, V
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2018, 477 (01) : 882 - 893
  • [2] Project VeSElkA : Preliminary results for CP stars recently observed with ESPaDOnS
    Khalack, Viktor
    LeBlanc, Francis
    NEW WINDOWS ON MASSIVE STARS: ASTEROSEISMOLOGY, INTERFEROMETRY AND SPECTROPOLARIMETRY, 2014, 307 : 381 - 382
  • [3] Vertical stratification of Cr in the atmospheres of CP stars
    Savanov, IS
    Kochukhov, OP
    ASTRONOMY LETTERS-A JOURNAL OF ASTRONOMY AND SPACE ASTROPHYSICS, 1998, 24 (04): : 516 - 527
  • [4] Abundances and search for vertical stratification in the atmospheres of four HgMn stars
    Thiam, M.
    LeBlanc, F.
    Khalack, V.
    Wade, G. A.
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2010, 405 (02) : 1384 - 1396
  • [5] CNO ABUNDANCES IN SOME CP STARS
    LEUSHIN, VV
    TOPILSKAYA, GP
    RYABCHIKOVA, TA
    PAVLOVA, VM
    ASTRONOMICHESKII ZHURNAL, 1992, 69 (03): : 552 - 562
  • [6] Stratification and isotope separation in CP stars
    Cowley, C. R.
    Hubrig, S.
    Gonzalez, J. F.
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2009, 396 (01) : 485 - 499
  • [7] Light Element Abundances in Field Stars
    Suchitra C. Balachandran
    Astrophysics and Space Science, 1999, 265 : 57 - 65
  • [8] Light element abundances in field stars
    Balachandran, SC
    ASTROPHYSICS AND SPACE SCIENCE, 1999, 265 (1-4) : 57 - 65
  • [9] SPECULATIONS ON LIGHT ELEMENT ABUNDANCES IN STARS
    EPHERRE, M
    REEVES, H
    ASTROPHYSICAL LETTERS, 1969, 3 (05): : 145 - &
  • [10] LANTHANIDE ABUNDANCES IN 3 COOL CP-STARS
    MAGAZZU, A
    COWLEY, CR
    ASTROPHYSICAL JOURNAL, 1986, 308 (01): : 254 - 259
12345