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Browsing by Author "Centre for Astrophysics Research"

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Browsing by Author "Centre for Astrophysics Research"

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  • Aoki, W.; Bisterzo, S.; Gallino, R.; Beers, T.C.; Norris, J.E.; Ryan, Sean G.; Tsangarides, S. (2006)
  • Elmegreen, B.G.; Rubio, M.; Hunter, D. A.; Verdugo, C.; Brinks, E.; Schruba, A. (2013-03-27)
    Carbon monoxide (CO) is the primary tracer for interstellar clouds where stars form, but it has never been detected in galaxies in which the oxygen abundance relative to hydrogen is less than 20 per cent of that of the ...
  • Ryan, Sean G. (Astronomical Society of the Pacific, 2003)
    A significant fraction of very metal-poor stars have unexpectedly high carbon abundances. I recap on their discovery, describe the results of high-resolution spectroscopic studies of their composition, and consider possible ...
  • Frith, J.; Pinfield, D.J.; Jones, H.R.A.; Barnes, J. R.; Pavlenko, Y.; Martin, E. L.; Brown, C.; Kuznetsov, M. K.; Marocco, F.; Tata, R.; Cappetta, M. (2013-11)
    Using the Position and Proper Motion Extended-L (PPMXL) catalogue, we have used optical and near-infrared colour cuts together with a reduced proper motion cut to find bright M dwarfs for future exoplanet transit studies. ...
  • Worrall, D.M.; Kraft, R.P.; Birkinshaw, M.; Hardcastle, M.J.; Forman, W.R.; Jones, C.; Murray, S.S. (2004)
    As the closest radio galaxy, Centaurus A is a powerful laboratory for the X-ray study of radio-emitting structures and their interactions with the hot interstellar medium (ISM). This paper details our interpretation of the ...
  • Wykes, Sarka; Hardcastle, M.J.; Croston, J. H. (2015-12-11)
    We report on deep XMM-Newton observations of the vertex filament in the southern giant lobe of the Fanaroff-Riley class I radio galaxy Centaurus A. We find no X-ray excess from the filament region and place a 3 sigma upper ...
  • Sauvage, M.; Sacchi, N.; Bendo, G. J.; Boselli, A.; Pohlen, M.; Wilson, C. D.; Auld, R.; Baes, M.; Barlow, M. J.; Bock, J. J.; Bradford, M.; Buat, V.; Castro-Rodriguez, N.; Chanial, P.; Charlot, S.; Ciesla, L.; Clements, D. L.; Cooray, A.; Cormier, D.; Cortese, L.; Davies, J. I.; Dwek, E.; Eales, S. A.; Elbaz, D.; Galametz, M.; Galliano, F.; Gear, W. K.; Glenn, J.; Gomez, H. L.; Griffin, M.; Hony, S.; Isaak, K. G.; Levenson, L. R.; Lu, N.; Madden, S. C.; O'Halloran, B.; Okumura, K.; Oliver, S.; Page, M. J.; Panuzzo, P.; Papageorgiou, A.; Parkin, T. J.; Perez-Fournon, I.; Rangwala, N.; Rigby, E. E.; Roussel, H.; Rykala, A.; Schulz, B.; Schirm, M. R. P.; Smith, M. W. L.; Spinoglio, L.; Stevens, Jason; Srinivasan, S.; Symeonidis, M.; Trichas, M.; Vaccari, M.; Vigroux, L.; Wozniak, H.; Wright, G. S.; Zeilinger, W.W. (2010-07-01)
    With appropriate spatial resolution, images of spiral galaxies in thermal infrared (~10 micron and beyond) often reveal a bright central component, distinct from the stellar bulge, superimposed on a disk with prominent ...
  • Oh, S.H.; Brook, C.; Governato, F.; Brinks, E.; Mayer, L.; de Blok, W.J.G.; Brooks, A.; Walter, F. (2011)
    We make a direct comparison of the derived dark matter (DM) distributions between hydrodynamical simulations of dwarf galaxies assuming ACDM cosmology and the observed dwarf galaxies sample from the THINGS survey in terms ...
  • Rauscher, T. (2014-04-01)
    Nucleosynthesis beyond Fe poses additional challenges not encountered when studying astrophysical processes involving light nuclei. Astrophysical sites and conditions are not well known for some of the processes involved. ...
  • Civano, F.; Elvis, M.; Aldcroft, T.; Fruscione, A.; Hao, H.; Lanzuisi, G.; Wright, N.J.; Brusa, M.; Salvato, M.; Bongiorno, A.; Comastri, A.; Zamorani, G.; Cappelluti, N.; Gilli, R.; Lusso, E.; Vignali, C.; Fiore, F.; Capak, P.; Scoville, N.Z.; Cisternas, M.; Kartaltepe, J.; Koekemoer, A. M.; Impey, C.D.; Trump, J.; Mainieri, V.; Miyaji, T.; Lilly, S.; Masters, D.; Puccetti, S.; Schawinski, K.; Urry, M.; Silverman, J. (2012-08-01)
    The Chandra COSMOS Survey (C-COSMOS) is a large, 1.8 Ms, Chandra program that has imaged the central 0.9 deg2 of the COSMOS field down to limiting depths of 1.9×10−16 erg cm−2 s−1 in the soft (0.5–2 keV) band, 7.3×10−16 ...
  • Wright, N.J.; Drake, Jeremy J.; Drew, J.E.; Vink, Jorick S. (Springer, 2012)
    Cygnus OB2 is the nearest example of a massive star forming region, containing over 50 O-type stars and hundreds of B-type stars.We have analyzed two Chandra pointings in Cyg OB2, detecting ∼1,700 X-ray sources, of which ...
  • Teng, S.H.; Schawinski, K.; Urry, C.M.; Bonning, E.W.; Simmons, B.D.; Darg, D.W.; Kaviraj, S.; Lintott, C.J.; Oh, K.; Cardamone, C.N.; Keel, W.C.; Treister, E. (2012-07-10)
    We present the results from a Chandra pilot study of 12 massive galaxy mergers selected from Galaxy Zoo. The sample includes major mergers down to a host galaxy mass of 1011 M ☉ that already have optical active galactic ...
  • Brassington, Nicola; Read, Andrew M.; Ponman, T.J. (2005-07-01)
    In this paper we present the results of a 20-ks high-resolution Chandra X-ray observation of the peculiar galaxy pair NGC 3395/3396, a system at a very early stage of merging, and less evolved than the famous Antennae and ...
  • Brassington, Nicola; Ponman, T.J.; Read, Andrew M. (2007-06-01)
    From a Chandra survey of nine interacting galaxy systems the evolution of X-ray emission during the merger process has been investigated. It is found that the X-ray luminosity peaks ~300Myr before nuclear coalescence, and ...
  • J. Wilkes, Belinda; V. Lal, Dharam; Worrall, D. M.; Birkinshaw, Mark; Haas, Martin; Willner, S. P.; Antonucci, Robert; Ashby, M. L. N.; Avara, Mark; Barthel, Peter; Chini, Rolf; Fazio, G.; Hardcastle, M.J.; Lawrence, Charles; Leipski, Christian; Ogle, Patrick; Schulz, Bernhard (2012-01-20)
    Chandra X-ray observations of the high redshift (z =1.532) radio-loud quasar 3C270.1 in 2008 February show the nucleus to have a power-law spectrum, Gamma = 1.66 +/- 0.08, typical of a radio-loud quasar, and a marginally-detected ...
  • Borucki, W.J.; Koch, D.G.; Basri, G.; Batalha, N.; Brown, T.M.; Bryson, S.T.; Caldwell, T.; Christensen-Dalsgaard, J.; Cochran, W.D.; DeVore, E.; Dunham, E.W.; Gautier, T.N.; Geary, J.C.; Gilliland, R.; Gould, A.; Howell, S.B.; Jenkins, J.M.; Latham, D.W.; Lissauer, J.J.; Marcy, G.W.; Rowe, J.; Sasselov, D.; Boss, A.; Charbonneau, D.; Ciardi, D.; Doyle, L.; Dupree, A.K.; Ford, E.B.; Fortney, J.; Holman, M.J.; Seager, S.; Steffen, J.H.; Tarter, J.; Welsh, W.F.; Allen, C.; Buchhave, L.A.; Christiansen, J.L.; Clarke, B.D.; Das, S.; Desert, J.M.; Endl, M.; Fabrycky, D.; Fressin, F.; Haas, M.; Horch, E.; Howard, A.; Isaacson, H.; Kjeldsen, H.; Kolodziejczak, J.; Kulesa, C.; Li, J.; Lucas, P.W.; Machalek, P.; McCarthy, D.; MacQueen, P.; Meibom, S.; Miquel, T.; Prsa, A.; Quinn, S.N.; Quintana, E.V.; Ragozzine, D.; Sherry, W.; Shpora, A.; Tenenbaum, P.; Torres, G.; Twicken, J.D.; Van Cleve, J.; Walkowicz, L.; Witteborn, F.C.; Still, M. (2011)
    On 2011 February 1 the Kepler mission released data for 156,453 stars observed from the beginning of the science observations on 2009 May 2 through September 16. There are 1235 planetary candidates with transit-like ...
  • Battersby, C.; Bally, J.; Ginsburg, A.; Bernard, J.-P.; Brunt, C.; Fuller, G.A.; Martin, P.; Molinari, S.; Mottram, J.; Peretto, N.; Testi, L.; Thompson, Mark (2011-11-01)
    Context. Despite their profound effect on the universe, the formation of massive stars and stellar clusters remains elusive. Recent advances in observing facilities and computing power have brought us closer to understanding ...
  • Riaz, Basmah; Gizis, John E. (2007-05-20)
    We present detailed modeling of the disk around the TW Hydrae Association (TWA) brown dwarf 2MASSW J1207334 - 393254 (2M1207), using Spitzer observations from 3.6 to 24 mu m. The spectral energy distribution (SED) does not ...
  • Farouqi, K.; Kratz, K.L.; Pfeiffer, B.; Rauscher, T.; Thielemann, Friedrich-Karl; Truran, J. W. (2010-04-01)
    The astrophysical site of the r-process is still uncertain, and a full exploration of the systematics of this process in terms of its dependence on nuclear properties from stability to the neutron drip-line within realistic ...
  • Anderson, G.E.; Gaensler, B.M.; Kaplan, D.L.A.; Slane, P.O.; Muno, M.P.; Posselt, B.; Hong, J.; Murray, Stephen S.; Steeghs, D.T.H.; Brogan, C.L.; Drake, Jeremy J.; Farrell, S.A.; Benjamin, R.A.; Chakrabarty, D.; Drew, J.E.; Finley, J.P.; Grindlay, J.E.; Lazio, T.J.W.W.; Lee, J.C.; Mauerhan, J.C.; Van Kerkwijk, M.H. (2014-05)
    We present the Chasing the Identification of ASCA Galactic Objects (ChIcAGO) survey, which is designed to identify the unknown X-ray sources discovered during the ASCA Galactic Plane Survey (AGPS). Little is known about ...

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