s-Process elements in the M supergiant alpha Ori
(2005) In Nuclear Physics, Section A 758. p.304-307- Abstract
- We present new results on a study of the weak s-process elemental abundances in the M supergiant alpha Ori (M2Iab). We have conducted the abundance analysis through comparison of synthetic with observed spectra in the two infrared spectral regions 0.7 - 1.1 mu m and 2.1 - 2.3 mu m, where the molecular and atomic line densities are less than in the optical region and where many of the relevant elements have strong tines. Our results show that there has been weak s-process production occurring during the life of the star and among the s-process elements is Sr the most, overabundant with 1.4 dex higher abundance than the sun. The abundance of Fe in alpha Ori is essentially solar. Other elements for which we have determined abundances are Rb,... (More)
- We present new results on a study of the weak s-process elemental abundances in the M supergiant alpha Ori (M2Iab). We have conducted the abundance analysis through comparison of synthetic with observed spectra in the two infrared spectral regions 0.7 - 1.1 mu m and 2.1 - 2.3 mu m, where the molecular and atomic line densities are less than in the optical region and where many of the relevant elements have strong tines. Our results show that there has been weak s-process production occurring during the life of the star and among the s-process elements is Sr the most, overabundant with 1.4 dex higher abundance than the sun. The abundance of Fe in alpha Ori is essentially solar. Other elements for which we have determined abundances are Rb, Y and Zr. We compare our results to nuclear evolutionary stellar model calculations and discuss their relevance. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/231980
- author
- Lundqvist, Martin LU and Wahlgren, Glenn LU
- organization
- publishing date
- 2005
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Nuclear Physics, Section A
- volume
- 758
- pages
- 304 - 307
- publisher
- Elsevier
- external identifiers
-
- wos:000230660500065
- scopus:20944431824
- ISSN
- 0375-9474
- DOI
- 10.1016/j.nuclphysa.2005.05.054
- language
- English
- LU publication?
- yes
- id
- 6ca3e94f-a9fe-4712-92d3-f9c5cbb8c619 (old id 231980)
- date added to LUP
- 2016-04-01 15:28:29
- date last changed
- 2022-12-12 04:31:30
@article{6ca3e94f-a9fe-4712-92d3-f9c5cbb8c619,
abstract = {{We present new results on a study of the weak s-process elemental abundances in the M supergiant alpha Ori (M2Iab). We have conducted the abundance analysis through comparison of synthetic with observed spectra in the two infrared spectral regions 0.7 - 1.1 mu m and 2.1 - 2.3 mu m, where the molecular and atomic line densities are less than in the optical region and where many of the relevant elements have strong tines. Our results show that there has been weak s-process production occurring during the life of the star and among the s-process elements is Sr the most, overabundant with 1.4 dex higher abundance than the sun. The abundance of Fe in alpha Ori is essentially solar. Other elements for which we have determined abundances are Rb, Y and Zr. We compare our results to nuclear evolutionary stellar model calculations and discuss their relevance.}},
author = {{Lundqvist, Martin and Wahlgren, Glenn}},
issn = {{0375-9474}},
language = {{eng}},
pages = {{304--307}},
publisher = {{Elsevier}},
series = {{Nuclear Physics, Section A}},
title = {{s-Process elements in the M supergiant alpha Ori}},
url = {{http://dx.doi.org/10.1016/j.nuclphysa.2005.05.054}},
doi = {{10.1016/j.nuclphysa.2005.05.054}},
volume = {{758}},
year = {{2005}},
}