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    • Extraction of underlying factors causing construction projects delay in Nigeria 

      Egwim, Christian Nnaemeka; Alaka, Hafiz; Oseghale, Raphael; Balogun, Habeeb (2021-09-07)
      Purpose This paper aims to establish the most underlying factors causing construction projects delay from the most applicable. Design/methodology/approach The paper conducted survey of experts using systematic review of ...

    • Extragalactic archaeology with the C, N, and O chemical abundances 

      Vincenzo, Fiorenzo; Kobayashi, Chiaki (2018-02-09)
      We predict how the C, N, and O abundances within the interstellar medium of galaxies evolve as functions of the galaxy star formation history (SFH). We adopt a hydrodynamical cosmological simulation, focusing on three ...

    • Extragalactic chemistry of molecular gas: lessons from the local universe 

      Garcia-Burillo, S.; Fuente, A.; Martin-Pintado, J.; Usero, A.; Gracia-Carpio, J.; Planesas, P. (2006)

    • Extragalactic Peaked-Spectrum Radio Sources at Low Frequencies 

      Callingham, J. R.; Ekers, R. D.; Gaensler, B. M.; Line, J. L. B.; Hurley-Walker, N.; Sadler, E. M.; Tingay, S. J.; Hancock, P. J.; Bell, M. E.; Dwarakanath, K. S.; For, B. -Q.; Franzen, T. M. O.; Hindson, Luke; Johnston-Hollitt, M.; Kapinska, A. D.; Lenc, E.; McKinley, B.; Morgan, J.; Offringa, A. R.; Procopio, P.; Staveley-Smith, L.; Wayth, R. B.; Wu, C.; Zheng, Q. (2017-02-20)
      We present a sample of 1,483 sources that display spectral peaks between 72 MHz and 1.4 GHz, selected from the GaLactic and Extragalactic All-sky Murchison Widefield Array (GLEAM) survey. The GLEAM survey is the widest ...

    • Extragalactic Peaked-Spectrum Radio Sources at Low-Frequencies are Young Radio Galaxies 

      Slob, M. M.; Callingham, J. R.; Röttgering, H. J. A.; Williams, W. L.; Duncan, K. J.; Gasperin, F. de; Hardcastle, M. J.; Miley, G. K. (2022-12-20)
      We present a sample of 373 peaked-spectrum (PS) sources with spectral peaks around 150 MHz, selected using a subset of the two LOw Frequency ARray (LOFAR) all-sky surveys, the LOFAR Two Meter Sky Survey and the LOFAR LBA ...

    • Extragalactic Radio Sources as a Piece of the Cosmological Jigsaw 

      Krause, M. (2018-02-26)
      Early on, extragalactic radio sources have pointed to a cosmologically evolv- ing Universe. They were also an important piece of evidence for the existence of supermassive black holes, now thought to be a key component of ...

    • An extragalactic spectroscopic survey of the SSA22 field 

      Saez, C.; Lehmer, B. D.; Bauer, F. E.; Stern, D.; Gonzales, A.; Rreza, I.; Alexander, D. M.; Matsuda, Y.; Geach, J. E.; Harrison, F. A.; Hayashino, T. (2015-07-01)
      We present Very Large Telescope VIMOS, Keck DEIMOS and Keck LRIS multi-object spectra of 367 sources in the field of the z ≈ 3.09 protocluster SSA22. Sources are spectroscopically classified via template matching, allowing ...

    • Extrasolar planets around HD 196050, HD 216437 and HD 160691 

      Jones, H.R.A.; Butler, R.P.; Marcy, G.W.; Tinney, C.G.; Penny, A.J.; McCarthy, C.; Carter, B.D. (2002-12)

    • Extreme infrared variables from UKIDSS - II. an end-of-survey catalogue of eruptive YSOs and unusual stars 

      Lucas, P. W.; Smith, L. C.; Pena, C. Contreras; Froebrich, Dirk D.; Drew, Janet E.; Kumar, M. S. N.; Borissova, J.; Minniti, D.; Kurtev, R.; Monguio, M. (2017-12-11)
      We present a catalogue of 618 high-amplitude infrared variable stars (1 < ΔK < 5 mag) detected by the two widely separated epochs of 2.2 μm data in the UKIDSS Galactic plane survey, from searches covering ∼1470 deg2. Most ...

    • Extreme infrared variables from UKIDSS-I : A concentration in star-forming regions 

      Contreras Peña, C.; Lucas, P.W.; Froebrich, D.; Kumar, M.S.N.; Goldstein, J.; Drew, J.E.; Adamson, A.J.; Davis, C.J.; Barentsen, Geert; Wright, N.J. (2014-04-01)
      We present initial results of the first panoramic search for high-amplitude near-infrared variability in theGalactic plane.We analyse the widely separated two-epoch K-band photometry in the fifth and seventh data releases ...

    • The extreme phronesis of Percy Cerutty : A narrativized life history of a legendary sports coach 

      Turner, David (2017-09-23)
      This paper presents and interprets a narrativized coaching life history of the Australian athletics coach Percy Cerutty (1895-1975). Through a relational process of self-improvement and practical wisdom sometimes called ...

    • Extreme radio flares and associated X-ray variability from young stellar objects in the Orion Nebula Cluster 

      Forbrich, Jan; Reid, Mark J.; Menten, Karl M.; Rivilla, Victor M.; Wolk, Scott J.; Rau, Urvashi; Chandler, Claire J. (2017-07-27)
      Young stellar objects are known to exhibit strong radio variability on timescales of weeks to months, and a few reports have documented extreme radio flares with at least an order of magnitude change in flux density on ...

    • The extreme red afterglow of GRB 060923: distance or dust? 

      Tanvir, N.; Levan, A.; Rol, E.; Starling, R.L.; Gorosabel, J.; Priddey, R.; Malesani, D.; Jakobsson, P.; O'Brien, P.T.; Jaunsen, A.O.; Hjorth, J.; Fynbo, J.; Melandri, A.; Gomboc, A.; Milvang-Jensen, B.; Fruchter, A.S.; Jarvis, M.J.; Fernandes, C.A.C.; Wold, T. (2008)

    • Extreme sensitivity displayed by single-crystal diamond deep ultra-violet photoconductive devices 

      Bevilacqua, Mose; Jackman, Richard B. (2009)
      Deep UV detection using a single crystal diamond (SCD) substrate without a homoepitaxial layer has been demonstrated using a defect passivation treatment. Despite evidence of surface damage on the SCD, the treatments lead ...

    • Extreme star formation in the Milky Way: luminosity distributions of young stellar objects in W49A and W51 

      Eden, D. J.; Moore, T. J. T.; Urquhart, J. S.; Elia, D.; Plume, R.; Konig, C.; Baldeschi, A.; Schisano, E.; Rigby, A. J.; Morgan, L. K.; Thompson, M. A. (2018-07-01)
      We have compared the star-formation properties of the W49A and W51 regions by using far-infrared data from the Herschel infrared Galactic Plane Survey (Hi-GAL) and 850-μm observations from the James Clerk Maxwell Telescope ...

    • An Extreme Starburst in the Core of a Rich Galaxy Cluster at z = 1.7 

      Webb, T.; Noble, A.; DeGroot, A.; Wilson, G.; Muzzin, A.; Bonaventura, N.; Cooper, M.; Delahaye, A.; Foltz, R.; Lidman, C.; Surace, J.; Yee, H.~K.~C.; Chapman, S.; Dunne, L.; Geach, J.; Hayden, B.; Hildebrandt, H.; Huang, J.; Pope, A.; Smith, M.~W.~L.; Perlmutter, S.; Tudorica, A. (2015-08-21)
      We have discovered an optically rich galaxy cluster at z = 1.7089 with star formation occurring in close proximity to the central galaxy. The system, SpARCS104922.6+564032.5, was detected within the Spitzer Adaptation of ...

    • Extremely Faint Blue-tail Stars in Centauri 

      Moehler, S.; Napiwotzki, R.; Sweigart, A.V.; Landsman, S.; Dreizler, S. (2002)

    • Extremely faint blue-tail stars in ω Centauri 

      Moehler, S.; Napiwotzki, R.; Sweigart, A.V.; Landsman, S.; Dreizler, S. (Astronomical Society of the Pacific, 2002)

    • Extremely inefficient star formation in the outer disks of nearby galaxies 

      Bigiel, F.; Leroy, A.; Walter, F.; Blitz, L.; Brinks, E.; de Blok, W.J.G.; Madore, B. (2010)
      We combine data from The H I Nearby Galaxy Survey and the GALEX Nearby Galaxy Survey to study the relationship between atomic hydrogen (H I) and far-ultraviolet (FUV) emission outside the optical radius (r 25) in 17 spiral ...

    • An extremely low gas-to-dust ratio in the dust-lane lenticular galaxy NGC 5485 

      Baes, Maarten; Allaert, Flor; Sarzi, Marc; De Looze, Ilse; Fritz, Jacopo; Gentile, Gianfranco; Hughes, Thomas M.; Puerari, Ivânio; Smith, Matthew W.L.; Viaene, Sébastien (2014-10-11)