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SUMMARY:FAST-SBF in Teramo: Measuring Fast\, Efficient Galaxy Distances wi
 th Surface Brightness Fluctuations
DTSTART:20260719T070000Z
DTEND:20260724T160000Z
DTSTAMP:20260418T143200Z
UID:indico-event-3480@indico.ict.inaf.it
CONTACT:fastsbf.oaab@inaf.it
DESCRIPTION:Speakers: Michele Cantiello (Istituto Nazionale di Astrofisica
  (INAF))\, Rebecca Ann Habas (Istituto Nazionale di Astrofisica (INAF))\n\
 nOverview\nThe discovery of the accelerated Universe has represented one o
 f the major scientific breakthroughs of the past century. This finding has
  driven\, in the last decades\, a major effort to study effective methods 
 to measure and characterize the cosmic expansion\, and to develop new grou
 nd- and space-based facilities able to provide the large amounts of high-q
 uality data required to characterize it. \nThe current disagreement betwe
 en the measured expansion rate and that inferred from the best-fit version
  of the Lambda cold dark matter cosmological model derived from cosmic mic
 rowave background fluctuations is now greater than 5σ (the Hubble tension
 ). Resolving this discrepancy is one of the pressing issues in modern cosm
 ology. \nThe Surface Brightness Fluctuations (SBF) method is one of the m
 ost powerful tools to determine galaxy distances\, a fundamental requireme
 nt for characterizing the expansion of the Universe. \nIn addition to bei
 ng one of the methods that robustly constrains the local value of the Hubb
 le parameter\, the SBF technique offers the opportunity to determine galax
 y group membership and dwarf galaxy associations in targets and distance r
 egimes where few (if any) other standard candles are applicable.\nThe meth
 od measures the intrinsic variance in a galaxy surface brightness distribu
 tion to determine its distance with an accuracy down to about 5%\, current
 ly for galaxies out to distances of ∼200 Mpc (potentially 300 Mpc with J
 WST).\nThe outstanding quality and quantity of data expected from next-gen
 eration facilities (Rubin-LSST\, Euclid\, JWST\, Roman\, etc.) offer a pro
 mising route to derive even more precise and accurate cosmological SBF dis
 tances for potentially tens of thousands of galaxies\, independent of and 
 complementary to Type Ia supernovae and Cepheids. However\, the volume of 
 data expected from these facilities also poses significant challenges for 
 the use of the method\, requiring SBF analyses to be carried out in a fast
 \, robust\, and automated way\, compared to the classical SBF measurement 
 procedures based on extensive user intervention.\nObjectives of the meetin
 g\nThe primary goal of the workshop is to provide researchers with the ski
 lls needed to measure extragalactic distances using the SBF method. The in
 tent is to provide a description of the theoretical and observational base
 s of the SBF technique\, and to present the fast and automated pipeline na
 med FAST-SBF for the SBF analysis of images\, newly developed by a team of
  researchers led by the INAF–Observatory of Abruzzo.\nParticipants will 
 actively engage with the code during hands-on\, group collaboration and in
 teractive learning sessions. They will face and manage concrete problems i
 n deriving SBF measurements by applying the pipeline to actual images from
  public LSST and Euclid survey data\, for which the pipeline has been spec
 ifically optimized.\nParticipation\nParticipation in the meeting is open t
 o everyone and free of charge and is limited to about 30 participants.\nPa
 rticipants are expected to have:\n\na basic knowledge of Python programmin
 g\;\nfamiliarity with astronomical image handling\;\na basic understanding
  of photometry.\n\nOrganizers\nThis meeting has been organized by the Isti
 tuto Nazionale di Astrofisica (INAF)-Osservatorio Astronomico d'Abruzzo\, 
 in collaboration with INAF-OA Roma (Italy)\, NOIRLab (AZ\, USA)\, and Utah
  Valley University (UT\, USA).\nThe workshop is supported by INAF through 
 the funds of the Direzione Scientifica and Osservatorio Astronomico d’Ab
 ruzzo\, the Mini-grant n.17/2024/RSN1 (Extragalactic Distances from Surfac
 e Brightness Fluctuations: a precise and accurate methodology for the next
  generation surveys\, PI G. Riccio)\; the GO-grant n. 12/2024 (Advancing C
 osmological Distance Measurements through JWST: Stellar Population Distanc
 e Indicators - TRGB and SBF Setting the Standard\, PI M. Cantiello). \n 
 \n\nhttps://indico.ict.inaf.it/event/3480/
IMAGE;VALUE=URI:https://indico.ict.inaf.it/event/3480/logo-905317205.png
LOCATION:Teramo - Hotel Sporting
URL:https://indico.ict.inaf.it/event/3480/
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