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Spectroscopic Observations of Stars of Class
Abstract
This paper presents a brief survey of S-type spectra based largely on spectrograms with dispersion 9 A/mm of eight stars obtained by I. S. Bowen with the 200-inch telescope. The intensities of several groups of absorption lines and bands and of the more important emission lines are compared in various stars. Radial velocities from both bright and dark lines and a supplementary list of absorption lines identified in the green region are included. The remarkable behavior of certain bright lines of V I and of Cr I in the spectrum of R Cygni is described.
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In the citing paper
“The presence of this radioactive element in AGB star spectra is a particularly important indicator of 'recent' s -process nucleosynthesis and mixing”
From The Dawes Review 2: Nucleosynthesis and Stellar Yields of Low- and Intermediate-Mass Single Stars (2014) · cites this paper as Merrill 1952
In the citing paper
“The first evidence that stars and not the Big Bang are responsible for the production of elements heavier than Fe came from observations by Merrill (1952) of radioactive Tc in red giant stars.”
From The Dawes Review 2: Nucleosynthesis and Stellar Yields of Low- and Intermediate-Mass Single Stars (2014) · cites this paper as Merrill (1952)
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The Dawes Review 2: Nucleosynthesis and Stellar Yields of Low- and Intermediate-Mass Single Stars
Karakas, A. I., & Lattanzio, J. C. (2014) · Publications of the Astronomical Society of Australia · doi:10.1017/pasa.2014.21 · Cited by 735
“The first evidence that stars and not the Big Bang are responsible for the production of elements heavier than Fe came from observations by Merrill (1952) of radioactive Tc in red giant stars.”
Background
Metadata
- Authors
- Merrill, S. P. W.
- Corresponding author
- Merrill, S. Paul W.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 1952-07
- Volume
- 116
- Pages
- 21
- ISSN
- 0004-637X (ISSN-L)
- 1538-4357
- OpenAlex
- W1992660496
- Cited by
- 240
- References
- 0
- Citations by year
- 2026: 4 · 2025: 10 · 2024: 13 · 2023: 10 · 2022: 13 · 2021: 6 · 2020: 7 · 2019: 10 · 2018: 8 · 2017: 8 · 2016: 6 · 2015: 11 · 2014: 8 · 2013: 4 · 2012: 4
- FWCI
- 7.58
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- The Astrophysical Journal (publishedVersion)
- Topics
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Stellar, planetary, and galactic studies
- Physical Sciences › Physics and Astronomy › Instrumentation › Astronomy and Astrophysical Research
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Astrophysics and Star Formation Studies
- Keywords
- S-type stars, stellar spectra, absorption lines, emission lines, radial velocity, spectroscopic survey
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