A buyer's guide to the Hubble constant
Since the expansion of the universe was first established by Edwin Hubble and Georges
Lemaître about a century ago, the Hubble constant H_0 H 0 which measures its rate has …
Lemaître about a century ago, the Hubble constant H_0 H 0 which measures its rate has …
Streams, substructures, and the early history of the Milky Way
A Helmi - Annual Review of Astronomy and Astrophysics, 2020 - annualreviews.org
The advent of the second data release of the Gaia mission, in combination with data from
large spectroscopic surveys, is revolutionizing our understanding of the Galaxy. Thanks to …
large spectroscopic surveys, is revolutionizing our understanding of the Galaxy. Thanks to …
Measurements of the Hubble constant: tensions in perspective
WL Freedman - The Astrophysical Journal, 2021 - iopscience.iop.org
Measurement of the distances to nearby galaxies has improved rapidly in recent decades.
The ever-present challenge is to reduce systematic effects, especially as greater distances …
The ever-present challenge is to reduce systematic effects, especially as greater distances …
Estimating distances from parallaxes. V. Geometric and photogeometric distances to 1.47 billion stars in Gaia Early Data Release 3
Stellar distances constitute a foundational pillar of astrophysics. The publication of 1.47
billion stellar parallaxes from Gaia is a major contribution to this. Despite Gaia's precision …
billion stellar parallaxes from Gaia is a major contribution to this. Despite Gaia's precision …
Gaia early data release 3-the astrometric solution
L Lindegren, SA Klioner, J Hernández… - Astronomy & …, 2021 - aanda.org
Context. Gaia Early Data Release 3 (Gaia EDR3) contains results for 1.812 billion sources in
the magnitude range G= 3–21 based on observations collected by the European Space …
the magnitude range G= 3–21 based on observations collected by the European Space …
Gaia Early Data Release 3-Parallax bias versus magnitude, colour, and position
L Lindegren, U Bastian, M Biermann… - Astronomy & …, 2021 - aanda.org
Context. Gaia Early Data Release 3 (Gaia EDR3) gives trigonometric parallaxes for nearly
1.5 billion sources. Inspection of the EDR3 data for sources identified as quasars reveals …
1.5 billion sources. Inspection of the EDR3 data for sources identified as quasars reveals …
A million binaries from Gaia eDR3: sample selection and validation of Gaia parallax uncertainties
K El-Badry, HW Rix, TM Heintz - Monthly Notices of the Royal …, 2021 - academic.oup.com
We construct from Gaia eDR3 an extensive catalogue of spatially resolved binary stars
within≈ 1 kpc of the Sun, with projected separations ranging from a few au to 1 pc. We …
within≈ 1 kpc of the Sun, with projected separations ranging from a few au to 1 pc. We …
The Carnegie-Chicago Hubble program. VIII. An independent determination of the Hubble constant based on the tip of the red giant branch
WL Freedman, BF Madore, D Hatt, TJ Hoyt… - The Astrophysical …, 2019 - iopscience.iop.org
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 …
based on a calibration of the tip of the red giant branch (TRGB) applied to Type Ia …
Gaia Data Release 3-Catalogue validation
C Babusiaux, C Fabricius, S Khanna… - Astronomy & …, 2023 - aanda.org
Context. The third Gaia data release (DR3) provides a wealth of new data products. The
early part of the release, Gaia EDR3, already provided the astrometric and photometric data …
early part of the release, Gaia EDR3, already provided the astrometric and photometric data …
A 3D dust map based on Gaia, Pan-STARRS 1, and 2MASS
We present a new three-dimensional map of dust reddening, based on Gaia parallaxes and
stellar photometry from Pan-STARRS 1 and 2MASS. This map covers the sky north of a decl …
stellar photometry from Pan-STARRS 1 and 2MASS. This map covers the sky north of a decl …