Published April 1, 1989
| Version v1
Journal article
Limits on heavy element abundances in QSO Ly α absorption systems
- 1. Cambridge Univ. (UK). Inst. of Astronomy
- 2. Royal Greenwich Observatory, Hailsham (UK)
- 3. Joint Astronomy Center, Hilo, HI (USA)
Description
Intermediate-resolution spectra of the QSOs MCS402, Q0347 -383, Q0420 - 388, and Q2204 - 408 have been combined to yield average spectra of Lyα absorption systems with improved signal-to-noise ratios. Searches for absorption lines of a number of heavy elements were carried out with no positive detections. Limits on the heavy element ions' column densities have been determined which are in broad agreement with previous studies. The further usefulness of intermediate-resolution spectra for setting heavy element abundance limits in Lyα systems is considered. (author)
Additional details
Publishing Information
- Journal Title
- Monthly Notices of the Royal Astronomical Society
- Journal Volume
- 237
- Journal Issue
- 3
- Series
- Mon. Not. R. Astron. Soc.
- Journal Page Range
- 635-652
- ISSN
- 0035-8711
- CODEN
- MNRAA
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- United Kingdom
- INIS RN
- 20054457
- Subject category
- S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- ABSORPTION SPECTRA; ELEMENT ABUNDANCE; EXPERIMENTAL DATA; HEAVY IONS; LINE WIDTHS; LYMAN LINES; QUASARS; RED SHIFT; VISIBLE RADIATION
- Descriptors DEC
- CHARGED PARTICLES; COSMIC RADIO SOURCES; DATA; ELECTROMAGNETIC RADIATION; INFORMATION; IONS; NUMERICAL DATA; QUANTITY RATIO; RADIATIONS; SPECTRA