Manganese Abundances in Cluster and Field Stars

Abstract

We have derived Mn abundances for more than 200 stars in 19 globular clusters. In addition, Mn abundance determinations have been made for a comparable number of halo field and disk stars possessing an overlapping range of metallicities and stellar parameters. Our primary data set was comprised of high resolution spectra previously acquired at the McDonald, Lick and Keck Observatories. To enlarge our data pool, we acquired globular and open cluster spectra from several other investigators. Data were analyzed using synthetic spectra of the 6000 ÅMn I triplet. Hyperfine structure parameters were included in the synthetic spectra computations. Our analysis shows that for the metallicity range $-0.7>$[Fe/H]$>$$-$2.7 stars of 19 globular clusters have a a mean relative abundance of $<$[Mn/Fe]$>$= $-0.37\pm 0.01$ ($\sigma$ = 0.10), a value in agreement with that of the field stars: $<$[Mn/Fe]$>$= $-0.36\pm 0.01$ ($\sigma$ = 0.08). Despite the 2 orders of magnitude span in metallicity, the $<$[Mn/Fe]$>$ ratio remains constant in both stellar populations. Our Mn abundance data indicate that there is no appreciable variation in the relative nucleosynthetic contribution from massive stars that undergo core-collapse supernovae and thus, no significant change of the associated initial mass function in the specified metallicity range.

arXiv comment43 Pages, 7 Figures; amended typos

References in corpus (29)

• Nucleosynthesis in Chandrasekhar Mass Models for Type Ia Supernovae and Constraints on Progenitor Systems and Burning-Front Propagation
• First stars V - Abundance patterns from C to Zn and supernova yields in the early Galaxy
• Galactic Chemical Evolution: Hydrogen Through Zinc
• The Chemical Compositions of Galactic Disk F and G Dwarfs
• Nucleosynthesis of Zinc and Iron-Peak Elements in Pop III Type II Supernovae : Comparison with abundances of Very Metal-Poor Halo Stars
• Abundances and Kinematics of Field Halo and Disk Stars I: Observational Data and Abundance Analysis
• The Galactic Thick Disk Stellar Abundances
• The Rise of the s-Process in the Galaxy
• Stellar Iron Abundances: non-LTE Effects
• Abundances for metal-poor stars with accurate parallaxes I. Basic data
• S4N: A Spectroscopic Survey of Stars in the Solar Neighborhood
• A Globular Cluster Metallicity Scale Based on the Abundance of Fe II
• Star-to-Star Abundance Variations among Bright Giants in the Mildly Metal-Poor Globular Cluster M4
• Abundances of 30 elements in 23 metal-poor stars
• Abundances in Stars from the Red Giant Branch Tip to Near the Main Sequence Turn Off in M71: III. Abundance Ratios
• New Analyses of Star-to-Star Abundance Variations Among Bright Giants in the Mildly Metal-Poor Globular Cluster M5
• The Chemical Composition Contrast between M3 and M13 Revisited: New Abundances for 28 Giant Stars in M3
• Abundances In Very Metal Poor Dwarf Stars
• Abundances in giant stars of the globular cluster NGC 6752
• Abundances in metal-rich stars - Detailed abundance analysis of 47 G and K dwarf stars with [Me/H] $>$ 0.10 dex
• Pal 12 As A Part of the Sgr Stream; the Evidence From Abundance Ratios
• Abundances of Cu and Zn in metal-poor stars: clues for Galaxy evolution
• Nucleosynthesis in Type II supernovae and the abundances in metal-poor stars
• On the Perils of Hyperfine Splitting: A reanalysis of Mn and Sc Abundance Trends
• An abundance analysis for four Red Horizontal Branch Stars in the extremely metal rich globular cluster NGC 6528
• The Metal Content of the Bulge Globular Cluster NGC 6528
• A Comparison of Copper Abundances in Globular Cluster and Halo Field Giant Stars
• High-resolution spectroscopy of the old open cluster Collinder 261:abundances of Iron and other elements
• Chemical Abundances Of Three Metal-Poor Globular Clusters (NGC 6287, NGC 6293, And NGC 6541) In The Inner Halo

Cited by in corpus (49)

• Fast rotating massive stars and the origin of the abundance patterns in galactic globular clusters
• NLTE abundances of Mn in a sample of metal-poor stars
• Chemodynamical history of the Galactic Bulge
• Chemistry of the Sagittarius Dwarf Galaxy: a Top-Light IMF, Outflows and the R-Process
• Nucleosynthesis and the Inhomogeneous Chemical Evolution of the Carina Dwarf Galaxy
• Detection of Elements at All Three r-process Peaks in the Metal-Poor Star HD 160617
• Helium enhanced stars and multiple populations along the horizontal branch of NGC2808: direct spectroscopic measurements
• Explosive Nucleosynthesis in Near-Chandrasekhar Mass White Dwarf Models for Type Ia Supernovae: Dependence on Model Parameters
• Solar abundance of manganese: a case for the existence of near Chandrasekhar-mass Type Ia supernova progenitors
• The origin and evolution of the odd-Z iron-peak elements Sc, V, Mn, and Co in the Milky Way stellar disk
• On the metallicity of open clusters II. Spectroscopy
• A new abundance scale for the globular cluster 47 Tuc
• The Chemical Compositions of Variable Field Horizontal Branch Stars: RR Lyrae Stars
• Globular Cluster Abundances from High-Resolution Integrated Light Spectra, I: 47 Tuc
• Detailed abundance analysis from integrated high-dispersion spectroscopy: Globular clusters in the Fornax Dwarf Spheroidal
• Na-O Anticorrelation and HB. VI. The chemical composition of the peculiar bulge globular cluster NGC 6388
• Heavy element abundances in giant stars of the globular clusters M4 and M5
• Explosive Nucleosynthesis in Sub-Chandrasekhar Mass White Dwarf Models for Type Ia Supernovae: Dependence on Model Parameters
• Constraining stellar population models - I. Age, metallicity, and abundance pattern compilation for Galactic globular clusters
• The extreme chemistry of multiple stellar populations in the metal-poor globular cluster NGC 4833
• Near-Infrared Photometry of Globular Clusters Towards the Galactic Bulge: Observations and Photometric Metallicity Indicators
• Manganese trends in a sample of thin and thick disk stars. The origin of Mn
• Manganese in dwarf spheroidal galaxies
• The Chemical Composition of the Galactic Bulge and Implications for its Evolution
• The AMBRE project: Iron-peak elements in the solar neighbourhood
• The Chemical Compositions of Non-Variable Red and Blue Field Horizontal Branch Stars
• Manganese Indicates a Transition from Sub- to Near-Chandrasekhar Type Ia Supernovae in Dwarf Galaxies
• The chemical composition of the low-mass Galactic globular cluster NGC 6362
• Manganese abundances in Galactic bulge red giants
• Mn abundances in the stars of the Galactic disc with metallicities -1.0 < [Fe/H] < 0.3
• Chemical Abundances for Evolved Stars in M5: Lithium through Thorium
• Deriving Metallicities from Calcium Triplet Spectroscopy in combination with Near Infrared Photometry
• Iron-peak elements Sc, V, Mn, Cu and Zn in Galactic bulge globular clusters
• Chemical Abundance Study of One Red Giant Star in NGC 5694 : A Globular Cluster with Dwarf Spheroidals' Chemical Signature?
• Chemical evolution of the metal poor Globular Cluster NGC 6809
• Manganese Abundances in the Globular Cluster Omega Centauri
• What is the Milky Way outer halo made of? High resolution spectroscopy of distant red giants
• NGC 1261: an $r$-process enhanced globular cluster from the Gaia-Enceladus event
• Empirically Derived Integrated Stellar Yields of Fe-Peak Elements
• NLTE modelling of integrated light spectra. Abundances of barium, magnesium, and manganese in a metal-poor globular cluster
• Abundance analysis of the outer halo globular cluster Palomar 14
• Chemical Abundances of Globular Clusters in NGC 5128 (Centaurus A)
• Manganese evolution in Omega Centauri: a clue to the cluster formation mechanisms?
• Chemical analysis of eight giant stars of the globular cluster NGC 6366
• A Differential Abundance Analysis of Very Metal-Poor Stars
• An outer shade of Pal: Abundance analysis of the outer halo globular cluster Palomar 13
• Validating Stellar Abundance Measurements from Multi-Resolution Spectroscopy
• Neutral-Gas-Phase Metal Abundances in ZnII-Selected Quasar Absorption Line Systems near Redshift $z=1.2$
• Purveyors of fine halos III. Chemical abundance analysis of a potential omega Cen associate