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181
SOFIA Observations of 30 Doradus. II. Magnetic Fields and Large-scale Gas Kinematics
Published 2023-01-01“…Feedback from the stellar cluster R136 has been shown to be the main source of energy creating multiple parsec-scale expanding-shells in the outer region, and carving a nebula core in the proximity of the ionization source. …”
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182
Shock Excitation in Narrow-line Regions Powered by AGN Outflows
Published 2023-01-01“…A narrow-line region (NLR) in the AGN is composed of ionized gas extending from parsec to kiloparsec scales. It has been suggested that shocks are required to ionize the NLR gas. …”
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183
Scalable techniques for extending lifetime reliability of manycore systems
Published 2020“…Extensive experiments are conducted to compare the proposed technique against two state-of-the-art aging-aware mapping methods, for 64-core and 256-core systems running applications from PARSEC and SPLASH-2 benchmark suites. When compared to existing methods, the proposed technique achieves up to a 3.6X extended system lifetime reliability, along with a 62% fewer failed cores at the end of ten years. …”
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Thesis-Doctor of Philosophy -
184
Constraining the Initial Mass Function in the Epoch of Reionization from Astrophysical and Cosmological Data
Published 2024-03-01“…To this purpose, we build up a semi-empirical model for the reionization history of the Universe based on various ingredients: the latest determination of the UV galaxy luminosity function from JWST out to redshift <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>z</mi><mo>≲</mo><mn>12</mn></mrow></semantics></math></inline-formula>; data-inferred and simulation-driven assumptions on the redshift-dependent escape fraction of ionizing photons from primordial galaxies; a simple yet flexible parameterization of the IMF <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>ϕ</mi><mo>(</mo><msub><mi>m</mi><mo>⋆</mo></msub><mo>)</mo></mrow></semantics></math></inline-formula>∼<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msubsup><mi>m</mi><mo>⋆</mo><mi>ξ</mi></msubsup><mspace width="0.166667em"></mspace><msup><mi>e</mi><mrow><mo>−</mo><msub><mi>m</mi><mrow><mo>⋆</mo><mo>,</mo><mi mathvariant="normal">c</mi></mrow></msub><mo>/</mo><msub><mi>m</mi><mo>⋆</mo></msub></mrow></msup></mrow></semantics></math></inline-formula> in terms of a high-mass end slope <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>ξ</mi><mo><</mo><mn>0</mn></mrow></semantics></math></inline-formula> and a characteristic mass <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>m</mi><mrow><mo>⋆</mo><mo>,</mo><mi mathvariant="normal">c</mi></mrow></msub></semantics></math></inline-formula>, below which a flattening or a bending sets in (allowing description of a variety of IMF shapes from the classic Salpeter to top-heavy ones); the PARSEC stellar evolution code to compute the UV and ionizing emission from different stars’ masses as a function of age and metallicity; and a few physical constraints related to stellar and galaxy formation in faint galaxies at the reionization redshifts. …”
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Article -
185
Interactions between the Jet and Disk Wind in Nearby Radio-intermediate Quasar III Zw 2
Published 2023-01-01“…We detect two jet knots, J1 and J2, on parsec scales that move at a mildly apparent superluminal speed of 1.35 c . …”
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186
Public Data Release of the FIRE-2 Cosmological Zoom-in Simulations of Galaxy Formation
Published 2023-01-01“…FIRE-2 simulations achieve parsec-scale resolution to explicitly model the multiphase interstellar medium while implementing direct models for stellar evolution and feedback, including stellar winds, core-collapse and Type Ia supernovae, radiation pressure, photoionization, and photoelectric heating. …”
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187
Resolving Galactic-scale Obscuration of X-Ray AGNs at z ≳ 1 with COSMOS-Web
Published 2023-01-01“…While much of the obscuration is attributed to a parsec-scale torus, there is a known contribution from the larger-scale host galaxy. …”
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188
The JWST Resolved Stellar Populations Early Release Science Program. II. Survey Overview
Published 2023-01-01“…They touch the theoretical hydrogen-burning limit in M92 (<0.08 M _⊙ ; M _F090W ∼ +13.6), include the lowest-mass stars observed outside the Milky Way in Draco II (0.09 M _⊙ ; M _F090W ∼ +12.1), and reach ∼1.5 mag below the oldest main-sequence turnoff in WLM ( M _F090W ∼ +4.6). The PARSEC stellar models provide a good qualitative match to the NIRCam CMDs, though they are ∼0.05 mag too blue compared to M92 F090W − F150W data. …”
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189
THE EFFECTS OF OBJECTIVE FUNCTION COMPUTATION METHOD ON DESIGN OPTIMIZATION OF TRANSONIC AIRFOILS USING...
Published 2019-05-01“…The modified PARSEC parameterization method is used for airfoil shape modeling that is able to generate airfoils with divergent trailing edge suitable for viscous flow calculations. …”
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190
A close-pair binary in a distant triple supermassive black hole system.
Published 2014“…Previous searches for compact black hole systems concluded that they were rare, with the tightest binary system having a separation of 7 parsecs (ref. 10). Here we report observations of a triple black hole system at redshift z = 0.39, with the closest pair separated by about 140 parsecs and significantly more distant from Earth than any other known binary of comparable orbital separation. …”
Journal article -
191
The Inner 2 pc of Sagittarius A*: Simulations of the Circumnuclear Disk and Multiphase Gas Accretion in the Galactic Center
Published 2023-01-01“…The inner few parsecs of the Milky Way’s Galactic center contain the central accreting supermassive black hole, over a million stars, and multiple large gaseous structures. …”
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192
PHANGS–JWST First Results: Interstellar Medium Structure on the Turbulent Jeans Scale in Four Disk Galaxies Observed by JWST and the Atacama Large Millimeter/submillimeter Array
Published 2023-01-01“…These spacings are then compared to estimates of the most Toomre-unstable length (a few kiloparsecs), the turbulent Jeans length (a few hundred parsecs), and the disk scale height (tens of parsecs) reconstructed using PHANGS–Atacama Large Millimeter/submillimeter Array observations of the molecular gas as a dynamical tracer. …”
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193
Fast Outflowing Warm Absorbers in Narrow-line Seyfert 1 Galaxy PG 1001+054 Revealed by HST/COS Spectra
Published 2023-01-01“…The estimated location of these WAs ranges from 1 to 73 parsecs away from the AGN. Together with previous detection of high ionization absorbers in the X-ray for PG 1001+054, we suggest that fast outflowing UV absorbers are probably part of a multiphase outflow. …”
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194
The Galactic center chimneys: the base of the multiphase outflow of the Milky Way
Published 2021“…In particular, the prominent edges and shocks observed in the radio and mid-infrared bands testify to the most powerful, more recent outflows from the central parsecs of the Milky Way.…”
Journal article -
195
Mid-infrared sub-arcsecond spectroscopy of active galaxy nuclei
Published 2007“…Several nearby active galaxies show evidence of resolved circumnuclear dusty structures with sizes of 10s of parsecs. The silicate absorption profile towards the most heavily obscured nuclei are narrower than those in the galaxies with tau((9.7 mu m)) < 3, possibly reflecting larger average grain sizes in the latter resulting from destruction of the smallest grains by the AGN.…”
Conference item -
196
Nuclear molecular outflow in the Seyfert galaxy NGC 3227
Published 2019“…On large scales, the cold molecular gas shows circular motions as well as streaming motions on scales of a few hundred parsecs that are associated with a large-scale bar. …”
Journal article -
197
Understanding sub-stellar populations using wide-field infrared surveys
Published 2014“…We also present some exciting results from our ongoing search for wide companions to this sample, that has so far revealed an M4-T8.5 binary system at ∼12 parsecs and also the first ever Tdwarf-white dwarf binary system. …”
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Article -
198
Pleiades or Not? Resolving the Status of the Lithium-rich M Dwarfs HHJ 339 and HHJ 430
Published 2020“…Based on their space motions, parallaxes, and positions in a Gaia-based color–magnitude diagram, it is probable that these two stars are about 40 parsecs foreground to the Pleiades and have ages of ~25 Myr. …”
Journal article -
199
A nearby transiting rocky exoplanet that is suitable for atmospheric investigation
Published 2021“…The host star is at a distance of ~8.1 parsecs, has a J-band magnitude of ~7.2, and is observable from both hemispheres of Earth. …”
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200
Silicate absorption in heavily obscured galaxy nuclei
Published 2007“…In NGC 5506, the depth of the silicate absorption increases from north to south across the nucleus, suggestive of a dusty structure on scales of tens of parsecs. We discuss the profile of the silicate absorption band towards galaxy nuclei and the relationship between the 9.7-μm silicate and 3.4-μm hydrocarbon absorption bands. © 2007 RAS.…”
Journal article