Corpus ID: 204009039

The Leavitt law of Milky Way Cepheids from Gaia DR2 static companion parallaxes

  title={The Leavitt law of Milky Way Cepheids from Gaia DR2 static companion parallaxes},
  author={Louise Breuval and Pierre Kervella and Fr{\'e}d{\'e}ric Arenou and Giuseppe Bono and Alexandre Gallenne and Boris Trahin and Antoine M'erand and Jesper Storm and Laura Inno and G. Pietrzynski and Wolfgang Gieren and Nicolas Nardetto and Dariusz Graczyk and Simon Borgniet and Behnam Javanmardi and Vincent Hocd'e},
  journal={arXiv: Solar and Stellar Astrophysics},
Classical Cepheids (CCs) are at the heart of the empirical extragalactic distance ladder. Milky Way CCs are the only stars of this class accessible to trigonometric parallax measurements. Until recently, the most accurate trigonometric parallaxes of Milky Way CCs were the HST/FGS measurements collected by Benedict et al. (2002, 2007). Unfortunately, the second Gaia data release (GDR2) has not yet delivered reliable parallaxes for Galactic CCs, failing to replace the HST/FGS sample as the… Expand
The Zwicky Transient Facility Catalog of Periodic Variable Stars
The number of known periodic variables has grown rapidly in recent years. Thanks to its large field of view and faint limiting magnitude, the Zwicky Transient Facility (ZTF) offers a uniqueExpand
Resolving the Hubble tension with new early dark energy
New Early Dark Energy (NEDE) is a component of vacuum energy at the electron volt scale, which decays in a first order phase transition shortly before recombination [arXiv:1910.10739]. The NEDEExpand


The Gaia reference frame for bright sources examined using VLBI observations of radio stars
Positions and proper motions of Gaia sources are expressed in a reference frame that ideally should be non-rotating relative to distant extragalactic objects, coincident with the InternationalExpand
The Carnegie-Chicago Hubble Program. VIII. An Independent Determination of the Hubble Constant Based on the Tip of the Red Giant Branch
We present a new and independent determination of the local value of the Hubble constant based on a calibration of the Tip of the Red Giant Branch (TRGB) applied to Type Ia supernovae (SNeIa). WeExpand
Planck 2018 results
Author(s): Aghanim, N; Akrami, Y; Ashdown, M; Aumont, J; Baccigalupi, C; Ballardini, M; Banday, AJ; Barreiro, RB; Bartolo, N; Basak, S; Battye, R; Benabed, K; Bernard, JP; Bersanelli, M; Bielewicz,Expand
Re-normalising the astrometric chi-square in Gaia DR2
  • 2018
Harmonizing Cosmic Distance Scales in a Post-Hipparcos ERA
Annals of Harvard College Observatory
  • 1908