Extreme r-process Enhanced Stars at High Metallicity in Fornax*

M. Reichert; C. J. Hansen; A. Arcones

doi:10.3847/1538-4357/abefd8

Extreme r-process Enhanced Stars at High Metallicity in Fornax*

M. Reichert^*, C. J. Hansen, A. Arcones

^*Corresponding author for this work

DARK

Research output: Contribution to journal › Journal article › Research › peer-review

17 Citations (Scopus)

Abstract

We present and discuss three extremely r-process enhanced stars located in the massive dwarf spheroidal galaxy Fornax. These stars are very unique with an extreme Eu enrichment (1.25 1) at high metallicities (i.e., [Fe/H] greater than or similar to -1.5). The stellar abundance pattern contains Lu, observed for the first time in a dwarf galaxy, and reveals that a late burst of star formation has facilitated extreme r-process enhancement late in the galaxy's history (

Original language	English
Article number	157
Journal	Astrophysical Journal
Volume	912
Issue number	2
Number of pages	12
ISSN	0004-637X
DOIs	https://doi.org/10.3847/1538-4357/abefd8
Publication status	Published - May 2021

Keywords

METAL-POOR STARS
LABORATORY TRANSITION-PROBABILITIES
CORE-COLLAPSE SUPERNOVAE
OSCILLATOR-STRENGTHS
ABUNDANCE PATTERNS
NEUTRON-CAPTURE
CHEMICAL-COMPOSITIONS
SOLAR ABUNDANCE
DWARF GALAXIES
ZR I

Access to Document

10.3847/1538-4357/abefd8

https://arxiv.org/pdf/2102.08399.pdf

Cite this

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title = "Extreme r-process Enhanced Stars at High Metallicity in Fornax*",

abstract = "We present and discuss three extremely r-process enhanced stars located in the massive dwarf spheroidal galaxy Fornax. These stars are very unique with an extreme Eu enrichment (1.25 1) at high metallicities (i.e., [Fe/H] greater than or similar to -1.5). The stellar abundance pattern contains Lu, observed for the first time in a dwarf galaxy, and reveals that a late burst of star formation has facilitated extreme r-process enhancement late in the galaxy's history (",

keywords = "METAL-POOR STARS, LABORATORY TRANSITION-PROBABILITIES, CORE-COLLAPSE SUPERNOVAE, OSCILLATOR-STRENGTHS, ABUNDANCE PATTERNS, NEUTRON-CAPTURE, CHEMICAL-COMPOSITIONS, SOLAR ABUNDANCE, DWARF GALAXIES, ZR I",

author = "M. Reichert and Hansen, {C. J.} and A. Arcones",

year = "2021",

month = may,

doi = "10.3847/1538-4357/abefd8",

language = "English",

volume = "912",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "Institute of Physics Publishing, Inc",

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TY - JOUR

T1 - Extreme r-process Enhanced Stars at High Metallicity in Fornax*

AU - Reichert, M.

AU - Hansen, C. J.

AU - Arcones, A.

PY - 2021/5

Y1 - 2021/5

N2 - We present and discuss three extremely r-process enhanced stars located in the massive dwarf spheroidal galaxy Fornax. These stars are very unique with an extreme Eu enrichment (1.25 1) at high metallicities (i.e., [Fe/H] greater than or similar to -1.5). The stellar abundance pattern contains Lu, observed for the first time in a dwarf galaxy, and reveals that a late burst of star formation has facilitated extreme r-process enhancement late in the galaxy's history (

AB - We present and discuss three extremely r-process enhanced stars located in the massive dwarf spheroidal galaxy Fornax. These stars are very unique with an extreme Eu enrichment (1.25 1) at high metallicities (i.e., [Fe/H] greater than or similar to -1.5). The stellar abundance pattern contains Lu, observed for the first time in a dwarf galaxy, and reveals that a late burst of star formation has facilitated extreme r-process enhancement late in the galaxy's history (

KW - METAL-POOR STARS

KW - LABORATORY TRANSITION-PROBABILITIES

KW - CORE-COLLAPSE SUPERNOVAE

KW - OSCILLATOR-STRENGTHS

KW - ABUNDANCE PATTERNS

KW - NEUTRON-CAPTURE

KW - CHEMICAL-COMPOSITIONS

KW - SOLAR ABUNDANCE

KW - DWARF GALAXIES

KW - ZR I

U2 - 10.3847/1538-4357/abefd8

DO - 10.3847/1538-4357/abefd8

M3 - Journal article

SN - 0004-637X

VL - 912

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

M1 - 157

ER -