Central Idea

• The Siena Galaxy Atlas (SGA) is an impressive digital collection showcasing approximately 400,000 galaxies located in the vicinity of our Milky Way.

Siena Galaxy Atlas

• The SGA was created by amalgamating data from 3 distinct astronomical surveys conducted between 2014 and 2017.
• These surveys took place at two observatories, namely the Cerro Tololo Inter-American Observatory (CTIO) and the Kitt Peak National Observatory (KPNO).
• These surveys are collectively known as the DESI Legacy Surveys, laid the foundation for the SGA.

Purpose of this Cosmic Atlas

• Cosmic atlases like the SGA play a crucial role in enabling astronomers to discern intricate patterns within the universe.
• They assist in categorizing various celestial phenomena, including transient stars, and identifying objects that merit further in-depth studies.
• The SGA excels in terms of precision and accuracy, ensuring that it remains aligned with the latest astronomical revelations.
• It facilitates investigations into the birth and evolution of galaxies, the distribution of mysterious dark matter, and the transmission of gravitational waves throughout space.

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