Lesson plan
PG 2112+059
PG 2112+059 is a Seyfert type 1 galaxy located in the northern constellation of Equuleus. The object has a redshift of (z) 0.459 estimating a light-travel time of 4.88 billion light-years from Earth and was first discovered in 1983 by astronomers from the Bright Quasar Survey (BQS). It is also classified as a broad absorption-line quasar (BAL) because it displays broad absorption lines in its spectrum.
Article summary
PG 2112+059 is a Seyfert type 1 galaxy located in the northern constellation of Equuleus. The object has a redshift of (z) 0.459 estimating a light-travel time of 4.88 billion light-years from Earth and was first discovered in 1983 by astronomers from the Bright Quasar Survey (BQS). It is also classified as a broad absorption-line quasar (BAL) because it displays broad absorption lines in its spectrum.
Key claims
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Discussion questions
- Summarise the article in your own words. Which single claim would you verify first, and why?
- Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
- If two sources disagreed about one of these facts, what would you need in order to trust one over the other?
Bibliography
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Key claims and bibliography are generated from the same tracked claims and sources as the article page.