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SN 2005gl

SN 2005gl is a astronomy topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand SN 2005gl rather than just read about it. In short: SN 2005gl was a supernova in the barred-spiral galaxy NGC 266. It was discovered using CCD frames taken October 5, 2005, from the 60 cm automated telescope at the Puckett Observatory in Georgia, US, and reported by Tim Puckett in collaboration with Peter Ceravolo.

SN 2005gl — main illustration
SN 2005gl — illustration

Key takeaways

  • SN 2005gl belongs to astronomy; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect SN 2005gl to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of SN 2005gl from memory before moving on to harder problems.

Reference excerpt

SN 2005gl was a supernova in the barred-spiral galaxy NGC 266. It was discovered using CCD frames taken October 5, 2005, from the 60 cm automated telescope at the Puckett Observatory in Georgia, US, and reported by Tim Puckett in collaboration with Peter Ceravolo. It was independently identified by Yasuo Sano in Japan. The supernova event took place sometime between September 10 and October 5 of 2005. It was located 29.8″ east and 16.7″ north of the galactic core. Based upon its spectrum, this was classified as a Type IIn core-collapse supernova. It has a redshift of z = 0.016, which is the same as the host galaxy. Using archived images from the Hubble Space Telescope, a candidate progenitor star was identified. This is believed to have been a luminous blue variable (LBV), similar to Eta Carinae, with an absolute magnitude of −10.3 and a surface temperature of about 13,000 K. There was a small probability that the source was instead located in a compact cluster of stars, but the association with the LBV has since been reliably established.

References

External links Bishop, David. "Supernova 2005gl in NGC 266". International Supernova Network & Rochester Academy of Sciences. Archived from the original on 2009-03-26. Retrieved 2009-04-20. Villard, Ray; Gal-Yam, Avishay (2009-03-22). "Hubble Uncovers an Unusual Stellar Progenitor to a Supernova". Hubble News Center. Retrieved 2009-04-20.

Illustrations

SN 2005gl illustration

Worked examples

Example 1 — a first encounter with SN 2005gl

Start with the simplest possible case. Write down what SN 2005gl claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to SN 2005gl before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about SN 2005gl ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of SN 2005gl

In research
SN 2005gl appears in astronomy research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses SN 2005gl in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
SN 2005gl is common in secondary-school and first-year university syllabi. It links to neighbouring topics Astronomical objects discovered in 2005, Luminous blue variables, Pisces (constellation), so understanding it makes those chapters shorter.
In everyday life
Look for SN 2005gl outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study SN 2005gl in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what SN 2005gl means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain SN 2005gl out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is SN 2005gl in simple terms?

SN 2005gl was a supernova in the barred-spiral galaxy NGC 266. It was discovered using CCD frames taken October 5, 2005, from the 60 cm automated telescope at the Puckett Observatory in Georgia, US, and reported by Tim Puckett in collaboration with Peter Ceravolo.

Why does SN 2005gl matter?

Because it connects several astronomy ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study SN 2005gl?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on SN 2005gl.

Tags

  • Astronomical objects discovered in 2005
  • Luminous blue variables
  • Pisces (constellation)
  • Type II supernovae

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