Low Metallicity
Physical Properties of Molecular Clouds at 2 pc Resolution in the Low-metallicity Dwarf Galaxy NGC 6822 and the Milky Way
... ∼ 2 ) than the standard value for Milky Way clouds or massive disk galaxies, which would be motivated by the lower SB ( due to a lower beam fi lling factor ) and results in identical virial ratios in NGC 6822 and the ...
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Carbon gas in SMC low-metallicity star-forming regions
... relatively low surface brightness extends well beyond the compact boundaries of the bright emission associated with the H II ...the low-metallicity environment of the SMC the small amount of dense ...
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A vestige low metallicity gas shell surrounding the radio galaxy 0943-242 at z=2.92
... same metallicity and degree of ...has low metallicity and is lo- cated further away from the host galaxy (than the emission line ...proposed metallicity drop relative to the inner emission ...
10
The Relationship Between Molecular Gas, H I, and Star Formation in the Low-mass, Low-metallicity Magellanic Clouds
... is low-mass, atomic- dominated, and has likely interacted with M31 within the past ...these low-mass, low-metallicity galaxies are forming stars differently from normal disk ...
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Initial mass function variations cannot explain the ionizing spectrum of low metallicity starbursts
... of low redshift extreme emission line galaxies and Lyman-continuum leakers identified as analogues to galax- ies in the distant Universe also show hard ionizing spectra ...
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Prolate rotation and metallicity gradient in the transforming dwarf galaxy Phoenix
... high- metallicity end and suppressed at the low-metallicity end compared to the true underlying ...per metallicity bin (Manning, private com- ...
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r-process observations
... We find a clear correlation with little scatter in abundances between Mg and Fe, both of which are yields of massive stars and their supernova explosions in the low metallicity range. Contributions of type ...
6
Mid-infrared followup of cold brown dwarfs: Diversity in age, mass and metallicity
... 2MASS 1237+65 has very strong H emission. Liebert & Burgasser (2007) discount the possibility that it is young and low-g, which would also be inconsistent with our analysis. They suggest that the object may be ...
6
Metallicity Dependent Wolf-Rayet Winds
... at low metallicity on WR populations is as ...assume metallicity independent WR line fluxes – obtained for Milky Way and LMC stars (Schaerer & Vacca 1998) – regardless of whether the host galaxy ...
10
Relationship between the Metallicity of the Circumgalactic Medium and Galaxy Orientation
... CGM metallicity and the galaxy orientation has been suggested as a method for de- termining if gas is accreting or outflowing ...and low metallicity ac- creting ...the metallicity distribution ...
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The Relationship between Galaxy ISM and Circumgalactic Gas Metallicities
... the metallicity of the ejected ma- ...find low metal- licity systems along the minor axis of galaxies, outflowing gas would have to be well-mixed with its metal-poor surroundings within the CGM or maybe the ...
10
The assembly of the halo system of the Milky Way as revealed by SDSS/SEGUE – The CEMP star connection
... The sub-class of CEMP- no stars (which exhibit no strong neutron-capture-element enhancements) is particularly prevalent among the lowest metallicity stars (Fe/H < − 2.5). Possible progenitors for this class ...
6
SDSS IV MaNGA IFS Galaxy Survey survey design, execution, and initial data quality
... Large spectroscopic galaxy surveys, such as the Sloan Digital Sky Survey (York et al. 2000), and the Two- degree Field Galaxy Redshift Survey (Colless et al. 2001), have revolutionized the way we study galaxy evolution. ...
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The Pan-Pacific planet search. I. A giant planet orbiting 7 CMa
... One can argue that the absence of significant variations in the Hipparcos photometry on the 763 day period is not a complete refutation of the starspot hypothesis. Stars have activity cycles, and so there is the ...
7
Correcting the spectroscopic surface gravity using transits and asteroseismology : no significant effect on temperatures or metallicities with ARES and MOOG in local thermodynamic equilibrium
... gravity, metallicity, stellar mass, and radius) are crucial for several reasons, amongst which are the precise characterization of orbiting exoplanets and the correct determination of galactic chemical ...
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A fundamental metallicity relation for galaxies at z=0.84-1.47 from HiZELS
... the metallicity, which is de- termined from the flux ratio [NII]/Hα, with unaccounted-for non- detections potentially acting to bias our sample to higher metallic- ...
12
Effect of doping on single walled carbon nanotubes network of different metallicity
... different metallicity are reported through the study of sheet resistance changes upon annealing and acid ...with low metallic content which comprises largely ...
7
First Principles Calculations on the Half Metallicity of Rock Salt Ferromagnetic FeO
... The geometrical structure of ferromagnetic FeO is optimized. Its electric and magnetic properties such as the half-metallicity, the conductivity and the magnetic moment distribution are investi- gated by ...
7
The Evolution of the Fractions of Quiescent and Star-forming Galaxies as a Function of Stellar Mass Since z = 3: Increasing Importance of Massive, Dusty Star-forming Galaxies in the Early Universe
... – metallicity relation, whether the studied samples may be biased against dusty galaxies ( ...– metallicity relation may indeed be missing signi fi cant numbers of heavily obscured star-forming galaxies at ...
6
Investigating Brown Dwarf Atmospheres: Gravity, Dust Content, Cloud Structure and Metallicity
... not low enough to have distinguishing alkali line strengths from field ob- jects in low resolution spectra, but are still young enough that their dust has not completely ...
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