Showing 181 - 200 results of 245 for search '"Parsec"', query time: 0.11s Refine Results
  1. 181

    SOFIA Observations of 30 Doradus. II. Magnetic Fields and Large-scale Gas Kinematics by Le Ngoc Tram, Lars Bonne, Yue Hu, Enrique Lopez-Rodriguez, Jordan A. Guerra, Pierre Lesaffre, Antoine Gusdorf, Thiem Hoang, Min-Young Lee, Alex Lazarian, B-G Andersson, Simon Coudé, Archana Soam, William D. Vacca, Hyeseung Lee, Michael Gordon

    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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    Article
  2. 182

    Shock Excitation in Narrow-line Regions Powered by AGN Outflows by Misaki Mizumoto, Hiroaki Sameshima, Naoto Kobayashi, Noriyuki Matsunaga, Sohei Kondo, Satoshi Hamano, Chikako Yasui, Kei Fukue, Akira Arai, Hideyo Kawakita, Shogo Otsubo, Giuseppe Bono, Ivo Saviane

    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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    Article
  3. 183

    Scalable techniques for extending lifetime reliability of manycore systems by Rathore, Vijeta

    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
  4. 184

    Constraining the Initial Mass Function in the Epoch of Reionization from Astrophysical and Cosmological Data by Andrea Lapi, Giovanni Gandolfi, Lumen Boco, Francesco Gabrielli, Marcella Massardi, Balakrishna S. Haridasu, Carlo Baccigalupi, Alessandro Bressan, Luigi Danese

    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
  5. 185
  6. 186

    Public Data Release of the FIRE-2 Cosmological Zoom-in Simulations of Galaxy Formation by Andrew Wetzel, Christopher C. Hayward, Robyn E. Sanderson, Xiangcheng Ma, Daniel Anglés-Alcázar, Robert Feldmann, T. K Chan, Kareem El-Badry, Coral Wheeler, Shea Garrison-Kimmel, Farnik Nikakhtar, Nondh Panithanpaisal, Arpit Arora, Alexander B. Gurvich, Jenna Samuel, Omid Sameie, Viraj Pandya, Zachary Hafen, Cameron Hummels, Sarah Loebman, Michael Boylan-Kolchin, James S. Bullock, Claude-André Faucher-Giguère, Dušan Kereš, Eliot Quataert, Philip F. Hopkins

    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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    Article
  7. 187
  8. 188

    The JWST Resolved Stellar Populations Early Release Science Program. II. Survey Overview by Daniel R. Weisz, Kristen B. W. McQuinn, Alessandro Savino, Nitya Kallivayalil, Jay Anderson, Martha L. Boyer, Matteo Correnti, Marla C. Geha, Andrew E. Dolphin, Karin M. Sandstrom, Andrew A. Cole, Benjamin F. Williams, Evan D. Skillman, Roger E. Cohen, Max J. B. Newman, Rachael Beaton, Alessandro Bressan, Alberto Bolatto, Michael Boylan-Kolchin, Alyson M. Brooks, James S. Bullock, Charlie Conroy, M. C. Cooper, Julianne J. Dalcanton, Aaron L. Dotter, Tobias K. Fritz, Christopher T. Garling, Mario Gennaro, Karoline M. Gilbert, Léo Girardi, Benjamin D. Johnson, L. Clifton Johnson, Jason S. Kalirai, Evan N. Kirby, Dustin Lang, Paola Marigo, Hannah Richstein, Edward F. Schlafly, Judy Schmidt, Erik J. Tollerud, Jack T. Warfield, Andrew Wetzel

    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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    Article
  9. 189

    T‌H‌E E‌F‌F‌E‌C‌T‌S O‌F O‌B‌J‌E‌C‌T‌I‌V‌E F‌U‌N‌C‌T‌I‌O‌N C‌O‌M‌P‌U‌T‌A‌T‌I‌O‌N M‌E‌T‌H‌O‌D O‌N D‌E‌S‌I‌G‌N O‌P‌T‌I‌M‌I‌Z‌A‌T‌I‌O‌N O‌F T‌R‌A‌N‌S‌O‌N‌I‌C A‌I‌R‌F‌O‌I‌L‌S U‌S‌I‌N‌G... by M. N‌e‌m‌a‌t‌i, A. J‌a‌h‌a‌n‌g‌i‌r‌i‌a‌n

    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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    Article
  10. 190

    A close-pair binary in a distant triple supermassive black hole system. by Deane, R, Paragi, Z, Jarvis, M, Coriat, M, Bernardi, G, Fender, R, Frey, S, Heywood, I, Klöckner, H, Grainge, K, Rumsey, C

    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
  11. 191

    The Inner 2 pc of Sagittarius A*: Simulations of the Circumnuclear Disk and Multiphase Gas Accretion in the Galactic Center by Siddhant Solanki, Sean M. Ressler, Lena Murchikova, James M. Stone, Mark R. Morris

    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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    Article
  12. 192
  13. 193

    Fast Outflowing Warm Absorbers in Narrow-line Seyfert 1 Galaxy PG 1001+054 Revealed by HST/COS Spectra by Xiao-Dan Fu, Junfeng Wang, Xiaoyu Xu, Zhi-Xiang Zhang

    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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    Article
  14. 194

    The Galactic center chimneys: the base of the multiphase outflow of the Milky Way by Ponti, G, Morris, MR, Churazov, E, Heywood, I, Fender, RP

    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
  15. 195

    Mid-infrared sub-arcsecond spectroscopy of active galaxy nuclei by Roche, P

    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)) &lt; 3, possibly reflecting larger average grain sizes in the latter resulting from destruction of the smallest grains by the AGN.…”
    Conference item
  16. 196

    Nuclear molecular outflow in the Seyfert galaxy NGC 3227 by Alonso Herrero, A, García-Burillo, S, Pereira-Santaella, M, Davies, R, Combes, F, Vestergaard, M, Raimundo, S, Bunker, A, Díaz-Santos, T, Gandhi, P, García-Bernete, I, Hicks, E, Hönig, S, Hunt, L, Imanishi, M, Izumi, T, Levenson, N, Maciejewski1, W, Packham, C, Ramos Almeida, C, Ricci, C, Rigopoulou, D, Roche, P, Rosario, D, Schartmann, M, Usero, A, Ward, M

    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
  17. 197

    Understanding sub-stellar populations using wide-field infrared surveys by Pinfield, D. J., Day-Jones, A. C., Burningham, B., Leggett, S. K., Beaumont, H., Tamura, M., Tinney, C. G., Liu, M. C., Homeier, Derek, Lodieu, N., Deacon, N. R., West, A. A., Huelamo, N., Dupuy, Trent J., Mortlock, D. J., Warren, S. J., Jones, H. R. A., Lucas, P. W., Ishi, M., McMahon, R. G., Hewett, P., Zapatero-Osorio, M. R., Martin, E. L., Venemans, B. P., Barrado, D., Zhang, Z., Morales-Calderon, M., West, A. A.

    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
  18. 198

    Pleiades or Not? Resolving the Status of the Lithium-rich M Dwarfs HHJ 339 and HHJ 430 by Stauffer, J, Barrado, D, David, T, Rebull, LM, Hillenbrand, LA, Mamajek, EE, Oppenheimer, R, Aigrain, S, Bouy, H, Lillo-Box, J

    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
  19. 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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    Article
  20. 200

    Silicate absorption in heavily obscured galaxy nuclei by Roche, P, Packham, C, Aitken, D, Mason, R

    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