Search Results - "Oey, M S"
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THE ORIGIN AND OPTICAL DEPTH OF IONIZING RADIATION IN THE “GREEN PEA” GALAXIES
Published in The Astrophysical journal (01-04-2013)“…Although Lyman-continuum (LyC) radiation from star-forming galaxies likely drove the re-ionization of the universe, observations of star-forming galaxies at…”
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Delayed Massive-star Mechanical Feedback at Low Metallicity
Published in The Astrophysical journal (01-12-2023)“…Abstract The classical model of massive-star mechanical feedback is based on effects at solar metallicity ( Z ⊙ ), yet feedback parameters are very different…”
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Kinematic Insights into Luminous Blue Variables and B[e] Supergiants
Published in The Astrophysical journal (01-11-2024)“…Abstract Recent work suggests that many luminous blue variables (LBVs) and B[e] supergiants (sgB[e]) are isolated, implying that they may be products of…”
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The Low-redshift Lyman Continuum Survey. I. New, Diverse Local Lyman Continuum Emitters
Published in The Astrophysical journal. Supplement series (21-04-2022)“…Abstract The origins of Lyman continuum (LyC) photons responsible for the reionization of the universe are as of yet unknown and highly contested. Detecting…”
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Catastrophic Cooling in Superwinds: Line Emission and Non-equilibrium Ionization
Published in The Astrophysical journal (20-12-2019)“…Outflows are a pervasive feature of mechanical feedback from super star clusters (SSCs) in starburst galaxies, playing a fundamental role in galaxy evolution…”
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The far-ultraviolet continuum slope as a Lyman Continuum escape estimator at high redshift
Published in Monthly notices of the Royal Astronomical Society (09-11-2022)“…ABSTRACT Most of the hydrogen in the intergalactic medium (IGM) was rapidly ionized at high redshifts. While observations have established that reionization…”
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Runaway OB Stars in the Small Magellanic Cloud. III. Updated Kinematics and Insights into Dynamical versus Supernova Ejections
Published in The Astrophysical journal (01-05-2024)“…Abstract We use the kinematics of field OB stars to estimate the frequencies of runaway stars generated by the dynamical ejection scenario (DES), the binary…”
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Haro 11: Where is the Lyman Continuum Source?
Published in The Astrophysical journal (10-10-2017)“…Identifying the mechanism by which high-energy Lyman continuum (LyC) photons escaped from early galaxies is one of the most pressing questions in cosmic…”
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The Low-redshift Lyman-continuum Survey: [S ii] Deficiency and the Leakage of Ionizing Radiation
Published in The Astrophysical journal (01-07-2021)“…Abstract The relationship between galaxy characteristics and the reionization of the universe remains elusive, mainly due to the observational difficulty in…”
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Tracing the Galactic Thick Disk to Solar Metallicities
Published in The Astrophysical journal (01-07-2007)“…We show that the Galactic thick disk reaches at least solar metallicites and that it experienced strong chemical enrichment during a period of similar to 3…”
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THE RUNAWAYS AND ISOLATED O-TYPE STAR SPECTROSCOPIC SURVEY OF THE SMC (RIOTS4)
Published in The Astrophysical journal (01-02-2016)“…ABSTRACT We present the Runaways and Isolated O-Type Star Spectroscopic Survey of the SMC (RIOTS4), a spatially complete survey of uniformly selected field OB…”
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HST FUV Spectroscopy of Super Star Cluster A in the Green Pea Analog Mrk 71: Revealing the Presence of Very Massive Stars
Published in The Astrophysical journal (01-12-2023)“…Abstract Mrk 71 is a low-metallicity ( Z = 0.16 Z ☉ ) starburst region in the local dwarf galaxy NGC 2366, hosting two super star clusters (SSCs A and B), and…”
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Haro 11: The Spatially Resolved Lyman Continuum Sources
Published in The Astrophysical journal (01-06-2024)“…Abstract As the nearest confirmed Lyman continuum (LyC) emitter, Haro 11 is an exceptional laboratory for studying LyC escape processes crucial to cosmic…”
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Strong Variability in AzV 493, an Extreme Oe-type Star in the SMC
Published in The Astrophysical journal (01-04-2023)“…Abstract We present 18 yr of OGLE photometry together with spectra obtained over 12 yr revealing that the early Oe star AzV 493 shows strong photometric (Δ I <…”
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Statistical Confirmation of a Stellar Upper Mass Limit
Published in The Astrophysical journal (10-02-2005)Get full text
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Nebular C iv λ1550 Imaging of the Metal-poor Starburst Mrk 71: Direct Evidence of Catastrophic Cooling
Published in Astrophysical journal. Letters (01-11-2023)“…Abstract We use the Hubble Space Telescope Advanced Camera for Surveys to obtain the first spatially resolved, nebular imaging in the light of C iv λ λ 1548,…”
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Disentangling the Hercules Stream
Published in The Astrophysical journal (01-02-2007)“…Using high-resolution spectra of nearby F and G dwarf stars, we have investigated the detailed abundance and age structure of the Hercules stream. We find that…”
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Spatially Resolved C iii] λ1909 Emission in Haro 11
Published in The Astrophysical journal (01-11-2020)“…The C iii] 1909 (hereafter C iii]) line is the strongest ultraviolet emission line after Ly and is therefore of interest to high-redshift studies of…”
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The Survey for Ionization in Neutral Gas Galaxies. III. Diffuse, Warm Ionized Medium and Escape of Ionizing Radiation
Published in The Astrophysical journal (01-06-2007)“…We use the first data release from the SINGG Ha survey of H i-selected galaxies to study the quantitative behavior of the diffuse, warm ionized medium (WIM)…”
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DIRECT DETECTION OF LYMAN CONTINUUM ESCAPE FROM LOCAL STARBURST GALAXIES WITH THE COSMIC ORIGINS SPECTROGRAPH
Published in The Astrophysical journal (20-05-2016)“…ABSTRACT We report on the detection of Lyman continuum radiation in two nearby starburst galaxies. Tol 0440-381, Tol 1247-232, and Mrk 54 were observed with…”
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