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Historical Coma Cluster Galaxy Catalogue
Data Science and Analytics
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About
Provides precise positional and photometric measurements for approximately 100 galaxies located within the Coma Cluster (Abell 1656). This astrophysical catalogue contains key observations, including celestial coordinates, magnitudes, and physical dimensions. The significance of the Coma Cluster is notable; motions observed here were instrumental in the initial discovery of Dark Matter.
Columns
The dataset contains information across 10 fields, capturing essential catalogue details and measurements:
- Index: A sequential identifier for the data record.
- Catalog: Specifies the primary catalogue used (e.g., PGC).
- RA (Right Ascension): The celestial longitude, indicating the object's east-west position.
- DEC (Declination): The celestial latitude, indicating the object's north-south position.
- Type: Classification of the celestial object, typically ‘Galaxy’ or ‘Gx’.
- Name: The common or designated galaxy name (e.g., UGC07877).
- Magn. (Magnitude): The measured apparent brightness of the galaxy.
- Principal Galaxies Catalogue Number: The specific designation from the PGC (e.g., PGC:42726).
- Galaxy Dimensions: The measured angular size of the galaxy on the sky (e.g., Dim: 0.9 x 0.3 ').
- Position Angle: The measured orientation of the galaxy (e.g., pa: 90).
- Interstellar extinction: Measurements related to light absorption (e.g., rv: 7104).
Distribution
The data is structured as an astronomical catalogue, focusing on around 100 galaxies. The primary file is
Abell 1656 List2.csv, which is approximately 9.15 kB in size. Validation checks indicate that 96 records are complete and unique across most key positional fields. This data product is static and has an expected update frequency of never.Usage
This data is perfectly suited for investigations into galaxy cluster dynamics, particularly within the Coma Cluster. It can be utilised for spatial mapping and visualisation, photometric analysis, studying morphological characteristics of cluster members, or validating existing astronomical measurements. Researchers focused on the historical evidence and context surrounding the discovery of Dark Matter will find this especially useful.
Coverage
The scope of the data is strictly limited to observations of galaxies within the Coma Cluster (Abell 1656). It provides a fixed set of positional and photometric readings for this specific deep-sky region.
License
CC0: Public Domain.
Who Can Use It
- Astronomers: For detailed studies of galaxy clusters, kinematics, and galactic morphology.
- Astrophysicists: Investigating evidence for Dark Matter using historical cluster observations.
- Data Analysts: Practicing analysis and visualisation techniques on real-world astrophysical catalogue data.
- Educators and Students: Teaching fundamental concepts in observational astronomy, celestial coordinate systems, and galaxy measurement.
Dataset Name Suggestions
- Coma Cluster Galaxy Catalogue (Positional and Photometric Data)
- Abell 1656 Galaxy Observations
- Historical Coma Cluster Galaxy Catalogue
Attributes
Original Data Source: Historical Coma Cluster Galaxy Catalogue
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