Now showing items 499-518 of 537

  • Ultraviolet and extreme-ultraviolet emissions at the flare footpoints observed by atmosphere imaging assembly 

    Qiu, J.; Sturrock, Z.; Longcope, D.W.; Klimchuk, J.A.; Liu, W.-J. (2013-09-01) - Journal article
    A solar flare is composed of impulsive energy release events by magnetic reconnection, which forms and heats flare loops. Recent studies have revealed a two-phase evolution pattern of UV 1600 Å emission at the feet of these ...
  • Uncertainties in water chemistry in disks : an application to TW Hydrae 

    Kamp, I.; Thi, W. -F.; Meeus, G.; Woitke, P.; Pinte, C.; Meijerink, R.; Spaans, M.; Pascucci, I.; Aresu, G.; Dent, W. R. F. (2013-11) - Journal article
    Context. This paper discusses the sensitivity of water lines to chemical processes and radiative transfer for the protoplanetary disk around TW Hya. The study focuses on the Herschel spectral range in the context of new ...
  • Understanding the Mg II and Hα spectra in a highly dynamical solar prominence 

    Heinzel, P.; Schmieder, B.; Mein, N.; Gunar, S. (2015-02-10) - Journal article
    Mg ii h and k and Hα spectra in a dynamical prominence have been obtained along the slit of the Interface Region Imaging Spectrograph (IRIS) and with the Meudon Multi-channel Subtractive Double Pass spectrograph on 2013 ...
  • Using dimers to measure biosignatures and atmospheric pressure for terrestrial exoplanets 

    Misra, A.; Meadows, V.; Claire, M.; Crisp, D. (2014-02-19) - Journal article
    We present a new method to probe atmospheric pressure on Earth-like planets using (O-O) dimers in the near-infrared. We also show that dimer features could be the most readily detectable biosignatures for Earth-like ...
  • The UV continua and inferred stellar populations of galaxies at z ≃ 7-9 revealed by the Hubble Ultra-Deep Field 2012 campaign 

    Dunlop, J. S.; Rogers, A. B.; McLure, R. J.; Ellis, R. S.; Robertson, B. E.; Koekemoer, A.; Dayal, P.; Curtis-Lake, E.; Wild, Vivienne; Charlot, S.; Bowler, R. A. A.; Schenker, M. A.; Ouchi, M.; Ono, Y.; Cirasuolo, M.; Furlanetto, S. R.; Stark, D. P.; Targett, T. A.; Schneider, E. (2013-07-11) - Journal article
    We use the new ultra-deep, near-infrared imaging of the Hubble Ultra-Deep Field (HUDF) provided by our UDF12 Hubble Space Telescope (HST) Wide Field Camera 3/IR campaign to explore the rest-frame ultraviolet (UV) properties ...
  • V5852 Sgr : an unusual nova possibly associated with the Sagittarius stream 

    Aydi, E.; Mróz, P.; Whitelock, P. A.; Mohamed, S.; Wyrzykowski, Ł.; Udalski, A.; Vaisanen, P.; Nagayama, T.; Dominik, M.; Scholz, A.; Onozato, H.; Williams, R. E.; Hodgkin, S. T.; Nishiyama, S.; Yamagishi, M.; Smith, A. M. S.; Ryu, T.; Iwamatsu, A.; Kawamata, I. (2016-09-11) - Journal article
    We report spectroscopic and photometric follow-up of the peculiar nova V5852~Sgr (discovered as OGLE-2015-NOVA-01), which exhibits a combination of features from different nova classes. The photometry shows a flat-topped ...
  • Validation of the magnetic energy vs. helicity scaling in solar magnetic structures 

    Tziotziou, K.; Moraitis, K.; Georgoulis, M.K.; Archontis, V. (2014-10) - Journal item
    Aims. We assess the validity of the free magnetic energy – relative magnetic helicity diagram for solar magnetic structures. Methods. We used two different methods of calculating the free magnetic energy and the relative ...
  • Variability in the CO ro-vibrational lines from HD163296 

    Bertelsen, Rosina P. Hein; Kamp, I.; Plas, G. van der; van den Ancker, M. E.; Waters, L. B. F. M.; Thi, W. -F.; Woitke, Peter (2016-05-11) - Journal article
    We present for the first time a direct comparison of multi-epoch (2001–2002 and 2012) CO ro-vibrational emission lines from HD 163296. We find that both the line shapes and the FWHM (full width at half-maximum) differ ...
  • Variability in young very low mass stars : two surprises from spectrophotometric monitoring 

    Bozhinova, Inna Nikolaeva; Scholz, Alexander; Eislöffel, J. (2016-05-21) - Journal article
    We present simultaneous photometric and spectroscopic observations of seven young and highly variable M dwarfs in star-forming regions in Orion, conducted in four observing nights with FOcal Reducer and low dispersion ...
  • Variable stars in the globular cluster NGC 7492 : new discoveries and physical parameter determination 

    Figuera Jaimes, R.; Arellano Ferro, A.; Bramich, D.M.; Giridhar, S.; Kuppuswamy, K. (2013-08) - Journal article
    Aims. We have performed a photometric V,R,I CCD time-series analysis with a baseline of about eight years of the outer-halo globular cluster NGC 7492 with the aim of searching for new variables and using these (and the ...
  • The VIMOS Public Extragalactic Redshift Survey (VIPERS). Environmental effects shaping the galaxy stellar mass function 

    Davidzon, I.; Cucciati, O.; Bolzonella, M.; De Lucia, G.; Zamorani, G.; Arnouts, S.; Moutard, T.; Ilbert, O.; Garilli, B.; Scodeggio, M.; Guzzo, L.; Abbas, U.; Adami, C.; Bel, J.; Bottini, D.; Branchini, E.; Cappi, A.; Coupon, J.; de la Torre, S.; Di Porto, C.; Fritz, A.; Franzetti, P.; Fumana, M.; Granett, B. R.; Guennou, L.; Iovino, A.; Krywult, J.; Le Brun, V.; Le Fevre, O.; Maccagni, D.; Małek, K.; Marulli, F.; McCracken, H. J.; Mellier, Y.; Moscardini, L.; Polletta, M.; Pollo, A.; Tasca, L. A. M.; Tojeiro, Rita; Vergani, D.; Zanichelli, A. (2016-02) - Journal article
    We exploit the first public data release of VIPERS to investigate environmental effects in the evolution of galaxies between z ~ 0.5 and 0.9. The large number of spectroscopic redshifts (more than 50 000) over an area of ...
  • The VIMOS Public Extragalactic Survey (VIPERS). First Data Release of 57 204 spectroscopic measurements 

    Garilli, B.; Guzzo, L.; Scodeggio, M.; Bolzonella, M.; Abbas, U.; Adami, C.; Arnouts, S.; Bel, J.; Bottini, D.; Branchini, E.; Cappi, A.; Coupon, J.; Cucciati, O.; Davidzon, I.; De Lucia, G.; de la Torre, S.; Franzetti, P.; Fritz, A.; Fumana, M.; Granett, B. R.; Ilbert, O.; Iovino, A.; Krywult, J.; Le Brun, V.; Le Fèvre, O.; Maccagni, D.; Małek, K.; Marulli, F.; McCracken, H. J.; Paioro, L.; Polletta, M.; Pollo, A.; Schlagenhaufer, H.; Tasca, L. A. M.; Tojeiro, Rita; Vergani, D.; Zamorani, G.; Zanichelli, A.; Burden, A.; Di Porto, C.; Marchetti, A.; Marinoni, C.; Mellier, Y.; Moscardini, L.; Nichol, R. C.; Peacock, J. A.; Percival, W. J.; Phleps, S.; Wolk, M. (2014-02-01) - Journal article
    We present the first Public Data Release (PDR-1) of the VIMOS Public Extragalactic Survey (VIPERS). It comprises 57 204 spectroscopic measurements together with all additional information necessary for optimal scientific ...
  • Visible light communication using a blue GaN mu LED and fluorescent polymer color converter 

    Chun, Hyunchae; Manousiadis, Pavlos; Rajbhandari, Sujan; Vithanage, Dimali A.; Faulkner, Grahame; Tsonev, Dobroslav; McKendry, Jonathan James Donald; Videv, Stefan; Xie, Enyuan; Gu, Erdan; Dawson, Martin D.; Haas, Harald; Turnbull, Graham A.; Samuel, Ifor D. W.; O'Brien, Dominic C. (2014-10-15) - Journal article
    This letter presents a novel technique to achieve high-speed visible light communication (VLC) using white light generated by a blue GaN mu LED and a yellow fluorescent copolymer. We generated white light suitable for room ...
  • The VLT LEGA-C spectroscopic survey : the physics of galaxies at a lookback time of 7 Gyr 

    van der Wel, A.; Noeske, K.; Bezanson, R.; Pacifici, C.; Gallazzi, A.; Franx, M.; Muñoz-Mateos, J. C.; Bell, E. F.; Brammer, G.; Charlot, S.; Chauké, P.; Labbé, I.; Maseda, M. V.; Muzzin, A.; Rix, H.-W.; Sobral, D.; van de Sande, J.; van Dokkum, P. G.; Wild, V.; Wolf, C. (2016-04-22) - Journal article
    The Large Early Galaxy Census (LEGA-Ca) is a Public Spectroscopic Survey of ∼ 3200 K-band selected galaxies at redshifts z=0.6-1.0 with stellar masses M* > 1010M_sun, conducted with VIMOS on ESO's Very Large Telescope. The ...
  • Volcano – Ice Interaction as a Microbial Habitat on Earth and Mars 

    Cousins, Claire Rachel; Crawford, Ian (2011-09) - Journal article
    Volcano-ice interaction has been a widespread geological process on Earth that continues to occur to the present day. The interaction between volcanic activity and ice can generate substantial quantities of liquid water, ...
  • Volcano – Ice Interaction: A Haven for Life on Mars? 

    Cousins, Claire Rachel (2011) - Journal article
  • Volcanogenic Fluvial-lacustrine environments in Iceland and their utility for identifying past habitability on Mars 

    Cousins, Claire Rachel (2015-02-16) - Journal article
    The search for once-habitable locations on Mars is increasingly focused on environments dominated by fluvial and lacustrine processes, such as those investigated by the Mars Science Laboratory Curiosity rover. The availability ...
  • The W43-MM1 mini-starburst ridge, a test for star formation efficiency models 

    Louvet, F.; Motte, F.; Hennebelle, P.; Maury, A.; Bonnell, I.; Bontemps, S.; Gusdorf, A.; Hill, T.; Gueth, F.; Peretto, N.; Duarte-Cabral, A.; Stephan, G.; Schilke, P.; Csengeri, T.; Luong, Q. Nguyen; Lis, D. C. (2014-10) - Journal article
    Context. Star formation efficiency (SFE) theories are currently based on statistical distributions of turbulent cloud structures and a simple model of star formation from cores. They remain poorly tested, especially at the ...
  • Warm Spitzer occultation photometry of WASP-26b at 3.6 and 4.5 mu m 

    Mahtani, D. P.; Maxted, P. F. L.; Anderson, D. R.; Smith, A. M. S.; Smalley, B.; Tregloan-Reed, J.; Southworth, J.; Madhusudhan, N.; Cameron, A. Collier; Gillon, M.; Harrington, J.; Hellier, C.; Pollacco, D.; Queloz, D.; Triaud, A. H. M. J.; West, R. G. (2013-06-11) - Journal article
    We present new warm Spitzer occultation photometry of WASP-26 at 3.6 and 4.5 mu m along with new transit photometry taken in the g, r and i bands. We report the first detection of the occultation of WASP-26b, with occultation ...
  • The WASP Project and the SuperWASP Cameras 

    Pollacco, D L; Skillen, I; Cameron, Andrew Collier; Christian, D J; Hellier, C; Irwin, J; Lister, T A; Street, R A; West, R G; Anderson, D; Clarkson, W I; Deeg, H; Enoch, B; Evans, A; Fitzsimmons, A; Haswell, C A; Hodgkin, S; Horne, Keith Douglas; Kane, S R; Keenan, F P; Maxted, P F L; Norton, A J; Osborne, J; Parley, N R; Ryans, R S I; Smalley, B; Wheatley, P J; Wilson, D M (2006-10) - Journal article
    The SuperWASP cameras are wide- field imaging systems at the Observatorio del Roque de los Muchachos on the island of La Palma in the Canary Islands, and at the Sutherland Station of the South African Astronomical Observatory. ...