The pursuit of heavy elements in the HgMn-type star χ Lupi

Observations with the GHRS in the costar era

Glenn M. Wahlgren, Tomas Brage, Ronald Lynn Gilliland, Sveneric G. Johansson, David S. Leckrone, Don J. Lindler, Ulf Litzén

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Observations of the ultra-sharp-lined HgMn star χ 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 ∼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.

Original languageEnglish (US)
JournalAstrophysical Journal
Volume435
Issue number1 PART 2
StatePublished - Nov 1 1994

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heavy elements
apertures
stars
spectral resolution
Hubble Space Telescope
spectrographs
aberration
science
telescopes
optics
wavelength
augmentation
high resolution
profiles
wavelengths

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Wahlgren, G. M., Brage, T., Gilliland, R. L., Johansson, S. G., Leckrone, D. S., Lindler, D. J., & Litzén, U. (1994). The pursuit of heavy elements in the HgMn-type star χ Lupi: Observations with the GHRS in the costar era. Astrophysical Journal, 435(1 PART 2).
Wahlgren, Glenn M. ; Brage, Tomas ; Gilliland, Ronald Lynn ; Johansson, Sveneric G. ; Leckrone, David S. ; Lindler, Don J. ; Litzén, Ulf. / The pursuit of heavy elements in the HgMn-type star χ Lupi : Observations with the GHRS in the costar era. In: Astrophysical Journal. 1994 ; Vol. 435, No. 1 PART 2.
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Wahlgren, GM, Brage, T, Gilliland, RL, Johansson, SG, Leckrone, DS, Lindler, DJ & Litzén, U 1994, 'The pursuit of heavy elements in the HgMn-type star χ Lupi: Observations with the GHRS in the costar era', Astrophysical Journal, vol. 435, no. 1 PART 2.

The pursuit of heavy elements in the HgMn-type star χ Lupi : Observations with the GHRS in the costar era. / Wahlgren, Glenn M.; Brage, Tomas; Gilliland, Ronald Lynn; Johansson, Sveneric G.; Leckrone, David S.; Lindler, Don J.; Litzén, Ulf.

In: Astrophysical Journal, Vol. 435, No. 1 PART 2, 01.11.1994.

Research output: Contribution to journalArticle

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AU - Wahlgren, Glenn M.

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AU - Gilliland, Ronald Lynn

AU - Johansson, Sveneric G.

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AU - Lindler, Don J.

AU - Litzén, Ulf

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Wahlgren GM, Brage T, Gilliland RL, Johansson SG, Leckrone DS, Lindler DJ et al. The pursuit of heavy elements in the HgMn-type star χ Lupi: Observations with the GHRS in the costar era. Astrophysical Journal. 1994 Nov 1;435(1 PART 2).