Browsing by Author "Centre for Astrophysics Research (CAR)"

Now showing items 1-20 of 3233

    • A 1.3 mm SMA Survey of 29 Variable Young Stellar Objects 

      Liu, Hauyu Baobab; Dunham, Michael M.; Pascucci, Ilaria; Bourke, Tyler L.; Hirano, Naomi; Longmore, Steven; Andrews, Sean; Carrasco-González, Carlos; Forbrich, Jan; Galván-Madrid, Roberto; Girart, Josep M.; Green, Joel D.; Juárez, Carmen; Kóspál, Ágnes; Manara, Carlo Felice; Palau, Aina; Takami, Michihiro; Testi, Leonardo; Vorobyov, Eduard I. (2018-04-01)
      Context. Young stellar objects (YSOs) may undergo periods of active accretion (outbursts), during which the protostellar accretion rate is temporarily enhanced by a few orders of magnitude. Whether or not these accretion ...

    • A 100 kpc inverse Compton x-ray halo around 4C 60.07 at z = 3.79 

      Smail, I.; Lehmer, B.D.; Ivison, R.J.; Alexander, D.M.; Bower, R.; Stevens, J. A.; Geach, James; Scharf, C.; Coppin, Kristen; van Breugel, W. (2009)
      We analyze a 100 ks Chandra observation of the powerful radio galaxy, 4C 60.07 at z = 3.79. We identify extended X-ray emission with L X ~ 1045 erg s–1 across a ~90 kpc region around the radio galaxy. The energetics of ...

    • A 100 pc elliptical and twisted ring of cold and dense molecular clouds revealed by Herschel around the galactic center 

      Molinari, S.; Bally, J.; Noriega-Crespo, A.; Compiegne, M.; Bernard, J.P.; Paradis, D.; Martin, P.; Testi, L.; Barlow, M.; Moore, T.; Plume, R.; Swinyard, B.; Zavagno, A.; Calzoletti, L.; M. Di Giorgio, A.; Elia, D.; Faustini, F.; Natoli, P.; Pestalozzi, Michele; Pezzuto, S.; Piacentini, F.; Polenta, G.; Polychroni, D.; Schisano, E.; Traficante, A.; Veneziani, M.; Battersby, C.; Burton, M.; Carey, S.; Fukui, Y.; Li, J.Z.; Lord, S.D.; Morgan, L.; Motte, F.; Schuller, F.; Stringfellow, G.S.; Tan, J.C.; Thompson, Mark; Ward-Thompson, D.; White, G.; Umana, G. (2011)
      Thermal images of cold dust in the Central Molecular Zone of the Milky Way, obtained with the far-infrared cameras on board the Herschel satellite, reveal a ~3 × 107 M ring of dense and cold clouds orbiting the Galactic ...

    • A 100-kiloparsec wind feeding the circumgalactic medium of a massive compact galaxy 

      Rupke, David S.~N.; Coil, Alison; Geach, James E.; Tremonti, Christy; Diamond-Stanic, Aleksandar M.; George, Erin R.; Hickox, Ryan C.; Kepley, Amanda A.; Leung, Gene; Moustakas, John; Rudnick, Gregory; Sell, Paul H. (2019-10-31)
      Ninety per cent of baryons are located outside galaxies, either in the circumgalactic or intergalactic medium1,2. Theory points to galactic winds as the primary source of the enriched and massive circumgalactic medium3,4,5,6. ...

    • The 106Cd(α, α)106Cd elastic scattering in a wide energy range for γ process studies 

      Ornelas, A.; Kiss, G. G.; Mohr, P.; Galaviz, D.; Fülöp, Zs; Gyürky, Gy; Máté, Z.; Rauscher, T.; Somorjai, E.; Sonnabend, K.; Zilges, A. (2015-08-01)
      Alpha elastic scattering angular distributions of the <sup>106</sup>Cd(α, α)<sup>106</sup>Cd reaction were measured at three energies around the Coulomb barrier to provide a sensitive test for the α + nucleus optical ...

    • A 1200-micron MAMBO survey of ELAISN2 and the Lockman Hole - I. Maps, sources and number counts 

      Greve, T.R.; Ivison, R.J.; Bertoldi, F.; Stevens, J. A.; Dunlop, J.S.; Lutz, D.; Carilli, C.L. (2004-11)
      We present a deep, new 1200μm survey of the ELAISN2 and Lockman Hole fields using the Max Planck Millimeter Bolometer array (MAMBO). The areas surveyed are 160 arcmin2 in ELAISN2 and 197 arcmin2 in the Lockman Hole, covering ...

    • A 1200um MAMBO Survey of the ELAIS N2 and Lockman Hole East Fields 

      Greve, T.R.; Ivison, R.J.; Bertoldi, F.; Stevens, Jason; Chapman, S. C.; Smail, I.; Blain, A.W. (Springer Nature, 2005)
      Using the MPIfR Max Planck Millimeter Bolometer array (MAMBO) on the IRAM 30m Telescope we have mapped the ELAIS N2 and Lockman Hole East Fields at 1200 μm to a rms noise level of 0.8–1.0 mJy per 11″ beam. The areas surveyed ...

    • A 1500 deg(2) near infrared proper motion catalogue from the UKIDSS Large Area Survey 

      Smith, Leigh; Lucas, P.W.; Burningham, B.; Jones, H.R.A.; Smart, R.L.; Andrei, A.H.; Catalan, S.; Pinfield, D.J. (2014-02)
      The United Kingdom Infrared Deep Sky Survey (UKIDSS) Large Area Survey (LAS) began in 2005, with the start of the UKIDSS programme as a 7 year effort to survey roughly 4000 deg(2) at high Galactic latitudes in Y, J, H and ...

    • 176Lu/176Hf : A sensitive test of s-process temperature and neutron density in AGB stars 

      Heil, M.; Winckler, N.; Dababneh, S.; Kaeppeler, F.; Wisshak, K.; Bisterzo, S.; Gallino, R.; Davis, A. M.; Rauscher, T. (2008-01-20)
      The s-process branching at A (176) has been analyzed on the basis of significantly improved experimental cross sections. This work reports on activation measurements of the partial (n, gamma) cross section of Lu-176 feeding ...

    • 197 CANDIDATES and 104 VALIDATED PLANETS in K2's FIRST FIVE FIELDS 

      Crossfield, Ian J M; Ciardi, David R.; Petigura, Erik A.; Sinukoff, Evan; Schlieder, Joshua E.; Howard, Andrew W.; Beichman, Charles A.; Isaacson, Howard; Dressing, Courtney D.; Christiansen, Jessie L.; Fulton, Benjamin J.; Lépine, Sébastien; Weiss, Lauren; Hirsch, Lea; Livingston, John; Baranec, Christoph; Law, Nicholas M.; Riddle, Reed; Ziegler, Carl; Howell, Steve B.; Horch, Elliott; Everett, Mark; Teske, Johanna; Martinez, Arturo O.; Obermeier, Christian; Benneke, Björn; Scott, Nic; Deacon, Niall; Aller, Kimberly M.; Hansen, Brad M S; Mancini, Luigi; Ciceri, Simona; Brahm, Rafael; Jordán, Andrés; Knutson, Heather A.; Henning, Thomas; Bonnefoy, Michaël; Liu, Michael C.; Crepp, Justin R.; Lothringer, Joshua; Hinz, Phil; Bailey, Vanessa; Skemer, Andrew; Defrere, Denis (2016-09-02)
      We present 197 planet candidates discovered using data from the first year of the NASA K2 mission (Campaigns 0-4), along with the results of an intensive program of photometric analyses, stellar spectroscopy, high-resolution ...

    • The 1993 multiwavelength campaign on 3C 279 : the radio to gamma-ray energy distribution inlow state 

      Maraschi, L.; Grandi, P.; Urry, C.M.; Wehrle, A. E.; Madejski, G.M.; Fink, H.; Ghisellini, G.; Hartman, R.C.; Koratkar, A.P.; von Montigny, C.; Pian, E.; Thomas, H.C.; Treves, A.; Aller, M. F.; Aller, H. D.; Bailyn, C. D.; Balonek, T.J.; Bock, H.; Collmar, W.; Glass, I.S.; Litchfield, S.J.; McHardy, I.M.; Mendez, R.; Pesce, J.; Reuter, H.-P.; Robson, E.I.; Steppe, H.; Stevens, Jason; Teraesranta, H.; Wagner, S.J. (1994-11-01)
      Simultaneous observations of 3C 279 at radio, millimeter, near-infrared, optical, ultraviolet (with IUE) and X-ray (with ROSAT) wavelengths were obtained in 1992 December-1993 January, during a three week pointing at the ...

    • The 1999 update of stellar neutron capture rates 

      Bao, Z.Y.; Beer, H.; Kappeler, F.; Wisshak, K.; Voss, F.; Rauscher, T. (American Institute of Physics (AIP), 2000)

    • A 1D fluid model of the Centaurus A jet 

      Wykes, Sarka; Snios, Bradford T.; Nulsen, Paul E. J.; Kraft, Ralph P.; Birkinshaw, Mark; Hardcastle, Martin J.; Worrall, Diana M.; McDonald, Iain; Rejkuba, Marina; Jones, Thomas W.; Stark, David J.; Forman, William R.; Meyer, Eileen T.; Jones, Christine (2019-05-01)
      We implement a steady, one-dimensional flow model for the X-ray jet of Centaurus A in which entrainment of stellar mass loss is the primary cause of dissipation. Using over 260 ks of new and archival Chandra/ACIS data, we ...

    • A 2 epoch proper motion catalogue from the UKIDSS Large Area Survey 

      Smith, Leigh; Lucas, P.W.; Burningham, B.; Jones, H.R.A.; Pinfield, D.J.; Smart, Ricky; Andrei, Alexandre (EDP Sciences, 2013)
      The UKIDSS Large Area Survey (LAS) began in 2005, with the start of the UKIDSS program as a 7 year effort to survey roughly 4000 square degrees at high galactic latitudes in Y, J, H and K bands. The survey also included a ...

    • The 2022–2023 accretion outburst of the young star V1741 Sgr 

      Kuhn, Michael; Hillenbrand, Lynnee A.; Connelley, Michael S.; Rich, R. Michael; Staels, Bart; Carvalho, Adolfo S.; Lucas, Philip; Fremling, Christoffer; Karambelkar, Viraj R.; Lee, Ellen; Ahumada, Tomás; Ishida, Emille E.~O.; De, Kishalay; de Souza, Rafael S.; Kasliwal, Mansi M. (2024-04-01)
      V1741 Sgr (= SPICY 71482/Gaia22dtk) is a Classical T Tauri star on the outskirts of the Lagoon Nebula. After at least a decade of stability, in mid-2022, the optical source brightened by ∼3 mag over 2 months, remained ...

    • 21-cm H I emission from the Damped Lyman-alpha absorber SBS 1543 593 

      Bowen, D.V.; Huchtmeier, W.; Brinks, E.; Tripp, T.M.; Jenkins, E.B. (2001-06)
      We detect 21-cm emission from the Low Surface Brightness (LSB) galaxy SBS 1543+593, which gives rise to a Damped-Ly (DLy ) absorption line in the spectrum of the background QSO HS 1543+5921 (ze = 0:807). We obtain an ...

    • The (234)U neutron capture cross section measurement at the n_TOF facility 

      Lampoudis, C.; Abbondanno, U.; Aerts, G.; Alvarez, H.; Alvarez-Velarde, F.; Andriamonje, S.; Andrzejewski, J.; Assimakopoulos, P.; Audouin, L.; Badurek, G.; Baumann, P.; Becvar, F.; Berthoumieux, E.; Calvino, F.; Calviani, M.; Cano-Ott, D.; Capote, R.; Carrapico, C.; Cennini, P.; Chepel, V.; Chiaveri, E.; Colonna, N.; Cortes, G.; Couture, A.; Cox, J.; Dahlfors, M.; David, S.; Dillmann, I.; Domingo-Pardo, C.; Dridi, W.; Duran, I.; Eleftheriadis, C.; Embid-Segura, M.; Ferrant, L.; Ferrari, A.; Ferreira-Marques, R.; Fujii, K.; Furman, W.; Goncalves, I.; Gonzalez-Romero, E.; Gramegna, F.; Guerrero, C.; Gunsing, F.; Haas, B.; Haight, R.; Heil, M.; Herrera-Martinez, A.; Igashira, M.; Jericha, E.; Rauscher, T.; n TOF Collaboration (EDP Sciences, 2008)
      The neutron capture cross-section of (234)U has been measured for energies from thermal up to the keV region in the neutron time-of-flight facility n_TOF, based on a spallation source located at CERN. A 4 pi BaF(2) array ...

    • 238U(n, γ) reaction cross section measurement with C 6D6 detectors at the n-TOF CERN facility 

      Mingrone, F.; Massimi, C.; Vannini, G.; Altstadt, S.; Andrzejewski, J.; Audouin, L.; Barbagallo, M.; Bécares, V.; Bečvář, F.; Belloni, F.; Berthoumieux, E.; Billowes, J.; Bosnar, D.; Brügger, M.; Calviani, M.; Calviño, F.; Cano-Ott, D.; Carrapiço, C.; Cerutti, F.; Chiaveri, E.; Chin, M.P.W.; Colonna, N.; Cortés, G.; Cortés-Giraldo, M.A.; Diakaki, M.; Domingo-Pardo, C.; Durán, I.; Dressler, R.; Eleftheriadis, C.A.; Ferrari, A.M.; Fraval, K.; Ganesan, S.; García, A. R.; Giubrone, G.; Gonçalves, I. F.; González-Romero, E.M.; Griesmayer, E.; Guerrero, C.; Gunsing, F.; Hernández-Prieto, A.; Jenkins, D. G.; Jericha, E.; Kadi, Y.; Käppeler, F.; Karadimos, D.; Kivel, N.; Koehler, P. E.; Krtička, M.; Kroll, J.; Lampoudis, C.; Langer, C.; Leal-Cidoncha, E.; Lederer, C.; Leeb, H.; Leong, L. S.; Losito, R.; Mallick, A.; Manousos, A.; Marganiec, J.; Martínez, T.; Mastinu, P.F.; Mastromarco, M.; Mendoza, E.; Mengoni, A.; Milazzo, P.M.; Mirea, M.; Mondalaers, W.; Paradela, C.; Pavlik, A.; Perkowski, J.; Plompen, A.J.M.; Praena, J.; Quesada, J.M.; Rauscher, T.; Reifarth, R.; Riego, A.; Robles, M.S.; Rubbia, C.; Sabaté-Gilarte, M.; Sarmento, R.; Saxena, A. C.; Schillebeeckx, P.; Schmidt, S.L.; Schumann, D.L.; Tagliente, G.; Taín, J. L.; Tarrío, D.; Tassan-Got, L.; Tsinganis, A.; Valenta, S.; Variale, V.; Vaz, P.; Ventura, A.; Vermeulen, M. J.; Vlachoudis, V.; Vlastou, R.; Wallner, A.; Ware, T.; Weigand, M.; Weiss, C.; Wright, T. J.; Žugec, P. (2014-04-14)
      The radiative capture cross section of 238U is very important for the developing of new reactor technologies and the safety of existing ones. Here the preliminary results of the 238U(n,γ) cross section measurement performed ...

    • 26Al gamma rays from the Galaxy with INTEGRAL/SPI 

      Pleintinger, Moritz M. M.; Diehl, Roland; Siegert, Thomas; Greiner, Jochen; Krause, Martin G. H. (2023-03-30)
      Context. The presence of radioactive 26Al at 1.8 MeV reveals an ongoing process of nucleosynthesis in the Milky Way. Diffuse emission from its decay can be measured with gamma-ray telescopes in space. The intensity, line ...

    • 26Al kinematics: superbubbles following the spiral arms? : Constraints from the statistics of star clusters and HI supershells 

      Krause, Martin; Diehl, R.; Bagetakos, Y.; Brinks, E.; Burkert, A.; Gerhard, O.; Greiner, J.; Kretschmer, K.; Siegert, T. (2015-06-12)
      High energy resolution spectroscopy of the 1.8 MeV radioactive decay line of 26Al with the SPI instrument on board the INTEGRAL satellite has recently revealed that diffuse 26Al has large velocities in comparison to other ...