Browsing by Author "Gieren, Wolfgang"

Now showing items 1-2 of 2

    • Inspecting the cepheid distance ladder: the Hubble space telescope distance to the SN Ia host Galaxy NGC 5584 
      Javanmardi, Behnam; Mérand, Antoine; Kervella, Pierre; Breuval, Louise; Gallenne, Alexandre; Nardetto, Nicolás; Gieren, Wolfgang; Pietrzyński, Grzegorz; Hocdé, Vincent; Borgniet, Simón (IOP Publishing, 2021)
      The current tension between the direct and the early-universe measurements of the Hubble constant, H0, requires detailed scrutiny of all the data and methods used in the studies on both sides of the debate. The Cepheids ...
    • Millimagnitude optical photometry for the transiting planetary candidate OGLE-TR-109 
      Fernández, José Miguel; Minniti, Dante; Pietrzynski, Grzegorz; Gieren, Wolfgang; Ruiz González, María Teresa; Zoccali, Manuela; Udalski, Andrzej; Szeifert, Thomas (UNIV CHICAGO PRESS, 2006-08-10)
      We present precise V-band photometry for the low-amplitude transit candidate star OGLE-TR-109. This is an extreme case among the transiting candidates found by the OGLE group because of the early spectral type of the star ...