Browsing by Subject "methods: observational"

Now showing items 1-7 of 7

    • A VLT/MUSE galaxy survey towards QSO Q1410: looking for a WHIM traced by BLAs in inter-cluster filaments 
      Pessa, Ismael; Tejos, Nicolás; Barrientos, L. Felipe; Werk, Jessica; Bielby, Richard; Padilla, Nelson; Morris, Simon L.; Prochaska, J. Xavier; López Morales, Sebastián; Hummels, Cameron (Oxford Academic, 2018)
      Cosmological simulations predict that a significant fraction of the low-z baryon budget resides in large-scale filaments in the form of a diffuse plasma at temperatures T ∼ 105 − 107 K. However, direct observation of this ...
    • Astrometric and photometric accuracies in high contrast imaging: The SPHERE speckle calibration tool (SpeCal) 
      Galicher, R.; Boccaletti, A.; Mesa, D.; Delorme, P.; Gratton, R.; Langlois, Maud; Lagrange, Anne Marie; Maire, A.-L.; Le Coroller, H.; Chauvin, G.; Biller, Beth; Cantalloube, Faustine; Janson, Markus; Lagadec, E.; Meunier, N.; Vigan, Arthur; Hagelberg, Janis; Bonnefoy, Mickael; Zurlo, Alice; Rocha, S.; Maurel, D.; Jaquet, M.; Buey, T.; Weber, L. (EDP Sciences, 2018-07-19)
      Context. The consortium of the Spectro-Polarimetric High-contrast Exoplanet REsearch installed at the Very Large Telescope (SPHERE/VLT) has been operating its guaranteed observation time (260 nights over five years) since ...
    • Deriving Iodine-free Spectra for High-resolution Echelle Spectrographs 
      Díaz, Matías R.; Shectman, Stephen A.; Paul Butler, R.; Jenkins, James Stewart (Institute of Physics Publishing, 2019)
      We describe a new method to derive clean, iodine-free spectra directly from observations acquired using high-resolution echelle spectrographs equipped with iodine cells. The main motivation to obtain iodine-free spectra ...
    • Distribution of Serpens South protostars revealed with ALMA 
      Plunkett, Adele; Fernández López, Manuel; Arce, Héctor; Busquet, Gemma; Vivanco Mardones, Diego; Dunham, Michael (EDP Sciences, 2018-07-03)
      Context. Clusters are common sites of star formation, whose members display varying degrees of mass segregation. The cause may be primordial or dynamical, or a combination both. If mass segregation were to be observed in ...
    • Observational calibration of the projection factor of Cepheids 
      Breitfelder, J.; Kervella, Pierre; Mérand, A.; Gallenne, A.; Szabados, L.; Anderson, R. I.; Willson, M.; Le Bouquin, J.-B. (EDP SCIENCES, 2015)
      Context. The distance of pulsating stars, in particular Cepheids, are commonly measured using the parallax of pulsation technique. The different versions of this technique combine measurements of the linear diameter variation ...
    • Observational calibration of the projection factor of Cepheids II. Application to nine Cepheids with HST/FGS ... 
      Breitfelder, J.; Mérand, A.; Kervella, Pierre; Gallenne, A.; Szabados, L.; Anderson, R. I.; Le Bouquin, J.-B. (ESO, 2016-03)
      Context. The distance to pulsating stars is classically estimated using the parallax-of-pulsation (PoP) method, which combines spectroscopic radial velocity (RV) measurements and angular diameter (AD) estimates to derive ...
    • The VLT/NaCo large program to probe the occurrence of exoplanets and brown dwarfs at wide orbits III. The ... 
      Reggiani, M.; Meyer, M.; Chauvin, G.; Vigan, A.; Quanz, S.; Biller, B.; Bonavita, M.; Desidera, S.; Delorme, P.; Hagelberg, J.; Maire, Anne-Lise; Boccaletti, A.; Beuzit, J.; Buenzli, E.; Carson, J.; Covino, E.; Feldt, M.; Girard, J.; Gratton, R.; Henning, Thomas; Kasper, M.; Lagrange, A.; Mesa, D.; Messina, S.; Montagnier, G.; Mordasini, C.; Mouillet, D.; Schlieder, J.; Segransan, D.; Thalmann, C.; Zurlo, A. (EDP SCIENCES, 2016)
      Context. In recent years there have been many attempts to characterize the occurrence and distribution of stellar, brown dwarf (BD), and planetary-mass companions to solar-type stars with the aim of constraining formation ...