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Everything about Andromeda Galaxy
Barred spiral galaxy in the Local Group
The Andromeda Galaxy is a barred spiral galaxy and is the nearest major galaxy to the Milky Way. It was originally named the Andromeda Nebula and is cataloged as Messier 31, M31, and NGC 224. Andromeda has a D25 isophotal diameter of about 46.56 kiloparsecs (152,000 light-years) and is approximately 765 kpc (2.5 million light-years) from Earth. The galaxy's name stems from the area of Earth's sky in which it appears, the constellation of Andromeda, which itself is named after the princess who was the wife of Perseus in Greek mythology. Wikipedia →
🧭 Start here: a 6-step reading path
- Read the overview: Andromeda GalaxyA 5-minute orientation
- Skim a recent paper: The Hubble Space Telescope Survey of M31 Satellite Galaxies. I. RR Lyrae–based Distances and Refined 3D Geometric StructureInfluential work since 2022
- Pick up a classic book: Antony and CleopatraThe most-reprinted book on the subject
- Read the landmark paper: ΛCDM‐based Models for the Milky Way and M31. I. Dynamical ModelsCited 591 times
- Go sideways: Star clusterA closely related topic
- Go sideways: Triangulum GalaxyA closely related topic
📖 Definitions
No dictionary entry for this exact phrase.
🏆 Landmark papers (most cited)
ΛCDM‐based Models for the Milky Way and M31. I. Dynamical Models
The remnants of galaxy formation from a panoramic survey of the region around M31
A giant stream of metal-rich stars in the halo of the galaxy M31
The formation of the nuclei of galaxies. I - M31
Functional mammalian homologues of the Drosophila PEV‐modifier Su(var)3‐9 encode centromere‐associated proteins which complex with the heterochromatin component M31
Old stellar populations. I - A spectroscopic comparison of galactic globular clusters, M31 globular clusters, and elliptical galaxies
A Survey of Local Group Galaxies Currently Forming Stars. I.UBVRIPhotometry of Stars in M31 and M33
Evidence for Stellar Substructure in the Halo and Outer Disk of M31
🆕 Influential since 2022
The Hubble Space Telescope Survey of M31 Satellite Galaxies. I. RR Lyrae–based Distances and Refined 3D Geometric Structure
The merger and assembly histories of Milky Way- and M31-like galaxies with TNG50: disc survival through mergers
Detection of a 100,000 M ⊙ black hole in M31's Most Massive Globular Cluster: A Tidally Stripped Nucleus
The Hubble Space Telescope Survey of M31 Satellite Galaxies. II. The Star Formation Histories of Ultrafaint Dwarf Galaxies
Satellites of Milky Way- and M31-like galaxies with TNG50: quenched fractions, gas content, and star formation histories
📚 Books worth reading
Antony and CleopatraWilliam Shakespeare · 1734
Human anatomy & physiologyElaine Nicpon Marieb, Katja Hoehn · 2010
Fundamentals of general, organic, and biological chemistryJohn E. McMurry, Mary E. Castellion · 1992
Living on the Fault LineGeoffrey A. Moore · 2000
Microbe huntersPaul De Kruif · 1926
El nombre de Dios es misericordiaPope Francis, Andrea Tornielli · 2001
Medicine & cultureLynn Payer · 1988
Images of organizationGareth Morgan · 1986
Ranked by number of editions on Open Library, a rough measure of how lasting a book is.
🔗 Related topics
- Star cluster A star cluster is a group of stars, that share an origin, formed at roughly the same time and held together by self-gravitation. Two main types of star…
- Triangulum Galaxy The Triangulum Galaxy is a spiral galaxy 2.878 million light-years (ly) from Earth in the constellation Triangulum. It is catalogued as Messier 33 or NGC…
- Globular cluster A globular cluster is a spheroidal conglomeration of stars that is bound together by gravity, with a higher concentration of stars towards its center.…
- Local Group The Local Group is the galaxy group that includes the Milky Way, where Earth is located. It consists of two collections of galaxies in a "dumbbell" shape;…
- Andromeda I Andromeda I is a dwarf spheroidal galaxy (dSph) about 2.40 million light-years away in the constellation Andromeda. Andromeda I is part of the local group…
- Messier 32 Messier 32 (also known as M32 and NGC 221) is a dwarf "early-type" galaxy about 2,490,000 light-years (760,000 pc) from the Solar System, appearing in…
- Andromeda III Andromeda III is a dwarf spheroidal galaxy about 2.44 million light-years away in the constellation Andromeda. It is part of the Local Group and is a satellite…
- RR Lyrae variable RR Lyrae variables are periodic variable stars, commonly found in globular clusters and other old stellar populations in galaxies. They are used as standard…