Pan-Andromeda Archaeological Survey
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Pan-Andromeda Archaeological Survey (PAndAS) is a large-scale
astronomical survey An astronomical survey is a general map or image of a region of the sky (or of the whole sky) that lacks a specific observational target. Alternatively, an astronomical survey may comprise a set of images, spectra, or other observations of obje ...
using the Canada-France-Hawaii Telescope. The survey is exploring the structure and content of the
Andromeda Galaxy The Andromeda Galaxy (IPA: ), also known as Messier 31, M31, or NGC 224 and originally the Andromeda Nebula, is a barred spiral galaxy with the diameter of about approximately from Earth and the nearest large galaxy to the Milky Way. The gala ...
(M31) and its neighbour, the
Triangulum Galaxy The Triangulum Galaxy is a spiral galaxy 2.73 million light-years (ly) from Earth in the constellation Triangulum. It is catalogued as Messier 33 or NGC (''New General Catalogue)'' 598. With the D25 isophotal diameter of , the Triangulum Ga ...
(M33). Clues to the formation of these galaxies may lie within the vast space being studied. PAndAS is searching for this history, hence the term "
galactic archaeology The study of galaxy formation and evolution is concerned with the processes that formed a heterogeneous universe from a homogeneous beginning, the formation of the first galaxies, the way galaxies change over time, and the processes that have ge ...
". The project is headed by Dr. Alan McConnachie at the
Herzberg Institute of Astrophysics The NRC Herzberg Astronomy and Astrophysics Research Centre (NRC Herzberg, HAA) is the leading Canadian centre for astronomy and astrophysics. It is based in Victoria, British Columbia. The current Director-General, as of 2021, is Luc Simard. ...
(NRC-HIA), and involves over twenty five investigators from that institute, as well as from universities in Canada, France, the United States, the United Kingdom, Germany, and Australia.


See also

* Extragalactic astronomy *
Observational cosmology Observational cosmology is the study of the structure, the evolution and the origin of the universe through observation, using instruments such as telescopes and cosmic ray detectors. Early observations The science of physical cosmology as it is ...
*
Andromeda XXI Andromeda XXI (And 21, And XXI) is a moderately bright dwarf spheroidal galaxy about away from the Sun in the constellation Andromeda. It is the fourth largest Local Group dwarf spheroidal galaxy. The discovery arose from the first year data o ...
*
Andromeda XXII Andromeda XXII (Pisces VI, Triangulum I) is a low surface brightness dwarf spheroidal galaxy about away from the Sun in the constellation Pisces, of the Local Group. Andromeda XXII is located much closer in projection to M33 than M31 vs. This ...


References

Andromeda Galaxy Astronomical surveys Observational astronomy Triangulum Galaxy {{Astronomy-stub