The pursuit of heavy elements in the HgMn-type star Chi Lupi: Observations with the GHRS in the COSTAR ERA
(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)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/3918998
- author
- Wahlgren, Glenn LU ; Brage, Tomas LU ; GILLILAND, RL ; Johansson, Sveneric LU ; Leckrone, DS ; Lindler, DJ and Litzén, Ulf LU
- organization
- publishing date
- 1994
- 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
- American Astronomical Society
- external identifiers
-
- wos:A1994PP15200018
- scopus:12044253025
- ISSN
- 0004-637X
- DOI
- 10.1086/187596
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Lund Observatory (000006111), Science (000006100), Physics, science (011013100)
- id
- 24b78918-77cf-4c7a-b336-630ec3eb0ca2 (old id 3918998)
- date added to LUP
- 2016-04-01 17:07:19
- date last changed
- 2024-01-11 21:03:15
@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}}, keywords = {{ABUNDANCES; INDIVIDUAL (CHI-LUPI); STARS; PECULIAR; ULTRAVIOLET}}, language = {{eng}}, number = {{1}}, pages = {{67--70}}, publisher = {{American Astronomical Society}}, 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}}, doi = {{10.1086/187596}}, volume = {{435}}, year = {{1994}}, }