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Welcome

The main goal of the Araucaria Project is to improve the calibration of the cosmic distance scale in the local Universe. We trace down environmental dependencies on the brightness of various standard candles by comparing distances to their host galaxies and clusters, obtained with different methods.

Discover our most recent results:

Extended envelopes around Galactic CepheidsExtended envelopes around Galactic Cepheids
Distance determination from J-band magnitudes of carbon stars on the asymptotic giant branch (JAGB)Distance determination from J-band magnitudes of carbon stars on the asymptotic giant branch (JAGB)
Numerous population of binary Cepheids with giant companionsNumerous population of binary Cepheids with giant companions
Reddening maps of the Magellanic CloudsReddening maps of the Magellanic Clouds

Other important results:

  • RR Lyrae stars in binary systems have companions with masses showing trimodal distribution — paper
  • Metallicity affects the Leavitt Law for Classical Cepheids in the Milky Way and Magellanic Clouds — paper
  • The surface brightness-colour relations based on eclipsing binary stars and calibrated with Gaia EDR3 — paper
  • Metallicities and ages for 35 star clusters and their surrounding fields in the Small Magellanic Cloud — paper
  • Deep near-infrared photometric maps of Carina, Fornax, and Sculptor — paper — photometric maps
  • Period-luminosity relation for classical Cepheids in the Milky Way from Gaia parallaxes — paper

For more results search PAPERS and glimpse at SCIENCE HIGHLIGHTS.

See our team’s activities:

Wolfgang Gieren awarded Barba PrizeWolfgang Gieren awarded Barba Prize
Happy New 2023 Year!Happy New 2023 Year!
The Araucaria Book now available onlineThe Araucaria Book now available online
Successful PhD defense of Piotr WielgórskiSuccessful PhD defense of Piotr Wielgórski

Read more NEWS IN THE TEAM.