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The pursuit of heavy elements in the HgMn-type star Chi Lupi: Observations with the GHRS in the COSTAR ERA

Wahlgren, Glenn LU ; Brage, Tomas LU ; GILLILAND, RL; Johansson, Sveneric LU ; Leckrone, DS; Lindler, DJ and Litzén, Ulf LU (1994) In Astrophysical Journal 435(1). p.67-70
Abstract
Observations of the ultra-sharp-lined HgMn star chi Lupi made with the Goddard High Resolution Spectrograph after the Hubble Space Telescope First Servicing Mission display the effect of COSTAR corrective optics upon the spectral resolution of several observing modes. The resolution is restored to levels expected in the absence of the telescope spherical aberration for all observations made through the GHRS Large Science Aperture (LSA). The Small Science Aperture (SSA) spectra are nearly identical in resolution to the pre-COSTAR values while benefiting from higher throughput. The line spread function for the LSA relative to the SSA shows little wavelength dependence and reflects a Gaussian profile approximately 20%-30% broader than for SSA... (More)
Observations of the ultra-sharp-lined HgMn star chi Lupi made with the Goddard High Resolution Spectrograph after the Hubble Space Telescope First Servicing Mission display the effect of COSTAR corrective optics upon the spectral resolution of several observing modes. The resolution is restored to levels expected in the absence of the telescope spherical aberration for all observations made through the GHRS Large Science Aperture (LSA). The Small Science Aperture (SSA) spectra are nearly identical in resolution to the pre-COSTAR values while benefiting from higher throughput. The line spread function for the LSA relative to the SSA shows little wavelength dependence and reflects a Gaussian profile approximately 20%-30% broader than for SSA spectra. Absorption features containing components of As II and Bi II represent upper limit enhancements of 2.9 and 2.1 dex for As II and Bi II, respectively, relative to meteoritic abundance determinations. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
ABUNDANCES, INDIVIDUAL (CHI-LUPI), STARS, PECULIAR, ULTRAVIOLET
in
Astrophysical Journal
volume
435
issue
1
pages
67 - 70
publisher
University of Chicago Press
external identifiers
  • wos:A1994PP15200018
ISSN
0004-637X
DOI
10.1086/187596
language
English
LU publication?
yes
id
24b78918-77cf-4c7a-b336-630ec3eb0ca2 (old id 3918998)
date added to LUP
2013-07-08 14:51:07
date last changed
2016-04-16 05:23:55
@article{24b78918-77cf-4c7a-b336-630ec3eb0ca2,
  abstract     = {Observations of the ultra-sharp-lined HgMn star chi Lupi made with the Goddard High Resolution Spectrograph after the Hubble Space Telescope First Servicing Mission display the effect of COSTAR corrective optics upon the spectral resolution of several observing modes. The resolution is restored to levels expected in the absence of the telescope spherical aberration for all observations made through the GHRS Large Science Aperture (LSA). The Small Science Aperture (SSA) spectra are nearly identical in resolution to the pre-COSTAR values while benefiting from higher throughput. The line spread function for the LSA relative to the SSA shows little wavelength dependence and reflects a Gaussian profile approximately 20%-30% broader than for SSA spectra. Absorption features containing components of As II and Bi II represent upper limit enhancements of 2.9 and 2.1 dex for As II and Bi II, respectively, relative to meteoritic abundance determinations.},
  author       = {Wahlgren, Glenn and Brage, Tomas and GILLILAND, RL and Johansson, Sveneric and Leckrone, DS and Lindler, DJ and Litzén, Ulf},
  issn         = {0004-637X},
  keyword      = {ABUNDANCES,INDIVIDUAL (CHI-LUPI),STARS,PECULIAR,ULTRAVIOLET},
  language     = {eng},
  number       = {1},
  pages        = {67--70},
  publisher    = {University of Chicago Press},
  series       = {Astrophysical Journal},
  title        = {The pursuit of heavy elements in the HgMn-type star Chi Lupi: Observations with the GHRS in the COSTAR ERA},
  url          = {http://dx.doi.org/10.1086/187596},
  volume       = {435},
  year         = {1994},
}