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Now showing items 321-340 of 3233
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Can Neutron Star Mergers Alone Explain the r-process Enrichment of the Milky Way?
Kobayashi, Chiaki; Mandel, Ilya; Belczynski, Krzysztof; Goriely, Stephane; Janka, Thomas H.; Just, Oliver; Ruiter, Ashley J.; Vanbeveren, Dany; Kruckow, Matthias U.; Briel, Max M.; Eldridge, Jan J.; Stanway, Elizabeth (2023-01-30)Comparing Galactic chemical evolution models to the observed elemental abundances in the Milky Way, we show that neutron star mergers can be a leading r-process site only if at low metallicities such mergers have very short ... -
Can the Local Bubble explain the radio background?
Krause, Martin G. H.; Hardcastle, Martin J. (2021-04-01)The ARCADE 2 balloon bolometer along with a number of other instruments have detected what appears to be a radio synchrotron background at frequencies below about 3 GHz. Neither extragalactic radio sources nor diffuse ... -
Can variability account for apparent age spreads in OB association colour-magnitude diagrams
Burningham, B.; Naylor, T.; Littlefair, S.P.; Jeffries, R.D. (2005) -
CanariCam-Polarimetry: A Dual-Beam 10 m Polarimeter for the GTC
Packham, C.; Hough, J.; Telesco, C.M. (Astronomical Society of the Pacific, 2005)The advent of large (¸8m) telescopes, along with the new breed of mid-IR instrumentation, has opened a new window to di®raction-limited polarimetry. CanariCam, nearing completion at the University of Florida for the 10m ... -
CanariCam: a multimode mid-infrared camera for the Gran Telescopio CANARIAS
Telesco, C.M.; Ciardi, D.; French, J.; Ftaclas, C.; Hanna, K.T.; Hough, J.; Julian, J.; Kidger, M.; Packham, C.; Pina, R.K.; Varosi, F.; Sellar, R.G. (Int Soc for Optical Engineering, 2003)The University of Florida is developing a mid-infrared camera for the 10.4-meter Gran Telescopio CANARIAS. CanariCam has four science modes and two engineering modes, which use the same 320 x 240-pixel, arsenic-doped ... -
Candidate planetary nebulae in the IPHAS photometric catalogue
Viironen, K.; Greimel, R.; Corradi, R.L.M.; Mampaso, A.; Rodriguez, M.; Sabin, L.; Delgado-Inglada, G.; Drew, J.E.; Giammanco, C.; Gonzalez-Solares, E.; Irwin, M.J.; Miszalski, B.; Parker, Q.A.; Rodriguez-Flores, E.R.; Zijlstra, A.A. (2009)Context. We have carried out a semi-automated search for planetary nebulae (PNe) in the INT photometric H-alpha survey (IPHAS) catalogue. We present the PN search and the list of selected candidates. We cross correlate the ... -
A candidate super-Earth planet orbiting near the snow line of Barnard's star
Ribas, I.; Tuomi, M.; Reiners, A.; Butler, R. P.; Morales, J. C.; Perger, M.; Dreizler, S.; Rodríguez-López, C.; Hernández, J. I. González; Rosich, A.; Feng, F.; Trifonov, T.; Vogt, S. S.; Caballero, J. A.; Hatzes, A.; Herrero, E.; Jeffers, S. V.; Lafarga, M.; Murgas, F.; Rodríguez, E.; Strachan, J. B. P.; Tal-Or, L.; Teske, J.; Toledo-Padrón, B.; Zechmeister, M.; Quirrenbach, A.; Amado, P. J.; Azzaro, M.; Béjar, V. J. S.; Barnes, J. R.; Berdiñas, Z. M.; Coleman, G.; Cortés-Contreras, M.; Crane, J.; Engle, S. G.; Guinan, E. F.; Haswell, C. A.; Henning, Th; Holden, B.; Jones, H. R. A.; Kaminski, A.; Kiraga, M.; Kürster, M.; López-González, M. J.; Montes, D.; Morin, J.; Ofir, A.; Pallé, E.; Rebolo, R.; Reffert, S.; Schweitzer, A.; Seifert, W.; Shectman, S. A.; Staab, D.; Street, R. A.; Mascareño, A. Suárez; Tsapras, Y.; Anglada-Escudé, G. (2018-11-15)Barnard’s star is a red dwarf, and has the largest proper motion (apparent motion across the sky) of all known stars. At a distance of 1.8 parsecs, it is the closest single star to the Sun; only the three stars in the α ... -
The Capture and Escape of Stars
Collett, J.; Dutta, S.N.; Evans, N.W. (1997)The shape of galaxies depends on their orbital populations. These populations change through capture into and escape from resonance. Capture problems fall into distinct cases depending upon the shape of the potential well. ... -
Capture cross section measurements of (186,187,188)Os at n_TOF : the resolved resonance region
Fujii, K.; Mosconi, M.; Milazzo, P. M.; Domingo-Pardo, C.; Kaeppeler, F.; Mengoni, A.; 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.; Dridi, W.; Duran, I.; Eleftheriadis, C.; Embid-Segura, M.; Ferrant, L.; Ferrari, A.; Ferreira-Marques, R.; Furman, W.; Goncalves, I.; Gonzalez-Romero, E.; Gramegna, F.; Guerrero, C.; Gunsing, F.; Haas, B.; Haight, R.; Heil, M.; Rauscher, T.; n TOF Collaboration (EDP Sciences, 2008)The neutron capture cross sections of (186,187,188)Os have been measured at the CERN neutron time-of-flight facility, n_TOF, in the neutron energy range from 1 eV up to 1 MeV. In this contribution, we report the results ... -
Capture cross section of 236U: The n_TOF results
Barbagallo, M.; Colonna, N.; Vermeulen, M. J.; Altstadt, S.; Andrzejewski, J.; Audouin, L.; Bécares, V.; Bečvàř, F.; Belloni, F.; Berthoumieux, E.; Berthoumieux, E.; Billowes, J.; Boccone, V.; Bosnar, D.; Brugger, M.; Calviani, M.; Calviño; Cano-Ott, D.; Carrapiço, C.; Cerutti, F.; Chiaveri, E.; Chiaveri, E.; Chin, M.; Cortés, G.; Cortés-Giraldo, M. A.; Diakaki, M.; Domingo-Pardo, C.; Duran, I.; Dressler, R.; Eleftheriadis, C.; Ferrari, A.; Fraval, K.; Ganesan, S.; García, A. R.; Giubrone, G.; Gómez-Hornillos, M. B.; Gonçalves, I. F.; González-Romero, E.; Griesmayer, E.; Guerrero, C.; Gunsing, F.; Hernández-Prieto, A.; Jenkins, D. G.; Jericha, E.; Kadi, Y.; Käppeler, F.; Karadimos, D.; Kivel, N.; Koehler, P.; Kokkoris, M.; 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.; Massimi, C.; Mastinu, P. F.; Mastromarco, M.; Mendoza, E.; Mengoni, A.; Milazzo, P. M.; Mingrone, F.; Mirea, M.; Mondalaers, W.; Paradela, C.; Pavlik, A.; Perkowski, J.; Plompen, A.; Praena, J.; Quesada, J. M.; Rauscher, T.; Reifarth, R.; Riego, A.; Robles, M. S.; Rubbia, C.; Sabaté-Gilarte, M.; Sarmento, R.; Saxena, A.; Schillebeeckx, P.; Schmidt, S.; Schumann, D.; Tagliente, G.; Tain, J. L.; Tarrío, D.; Tassan-Got, L.; Tsinganis, A.; Valenta, S.; Vannini, G.; Variale, V.; Vaz, P. (2014-05-31).Neutron induced capture cross section on 236U has been measured with high accuracy and high resolution at n_TOF, in order to improve data libraries needed for the development of advancednuclear reactors. Preliminary results ... -
Capture of a particles by isospin-symmetric nuclei
Rauscher, T.; Thielemann, Friedrich-Karl; Gorres, J.; Wiescher, M. (2000-08-14)The reaction rates for ct capture processes on self-conjugate nuclei in the mass range A = 20-40 have been investigated. The rates were calculated using the statistical model code NON-SMOKER taking into account isospin ... -
Carbon abundances and 12C/13C from globular cluster giants --
Pavlenko, Y.; Jones, H.R.A.; Longmore, A.J. (2003-10) -
Carbon enhanced metal-poor stars I : Chemical compositions of 26 stars
Aoki, W.; Beers, T.C.; Christlieb, N.; Norris, J.E.; Ryan, Sean G.; Tsangarides, S. (2007) -
Carbon monoxide bands in M dwarfs
Pavlenko, Y.; Jones, H.R.A. (2002-12) -
Carbon monoxide in clouds at low metallicity in the dwarf irregular galaxy WLM
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 ... -
Carbon monoxide in low-mass dwarf stars
Jones, H.R.A.; Pavlenko, Y.; Viti, S.; Barber, R.J.; Yakovina, L.A.; Pinfield, D.J.; Tennyson, J. (2005-03) -
Carbon stock changes of forest land in Finland under different levels of wood use and climate change
Sievänen, Risto; Salminen, Olli; Lehtonen, Aleksi; Ojanen, Paavo; Liski, Jari; Ruosteenoja, Kimmo; Tuomi, Mikko (2014-03-01)•Context: Prediction of the effect of harvests and climate change (CC) on the changes in carbon stock of forests is necessary both for CC mitigation and adaptation purposes. •Aims: We assessed the impact of roundwood and ... -
Carbon-Enhanced Metal-Poor Stars. III : Main-Sequence Turn-Off Stars from the SDSS/SEGUE Sample
Aoki, W.; Beers, T.C.; Sivarani, T.; Marsteller, B.; Lee, Y.S.; Honda, S.; Norris, J.E.; Ryan, Sean G.; Carollo, D. (2008-05-10)The chemical compositions of seven CEMP turnoff stars are determined from high-resolution spectroscopy. Five are selected from the SDSS SEGUE sample of metal-poor stars. Another star chosen from the SDSS SEGUE sample has ... -
Carbon-enhanced metal-poor stars. Osmium and iridium abundances in the neutron-capture-enhanced subgiants CS31062-050 and LP625-44
Aoki, W.; Bisterzo, S.; Gallino, R.; Beers, T.C.; Norris, J.E.; Ryan, Sean G.; Tsangarides, S. (2006) -
Carbon-rich, Extremely Metal-Poor Population II stars
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 ...