astronomy

SN 2013fs

SN 2013fs 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 2013fs rather than just read about it. In short: SN 2013fs is a supernova, located in the spiral galaxy NGC 7610, discovered by the Intermediate Palomar Transient Factory sky survey at Palomar Observatory on 6 October 2013 (and originally named iPTF 13dqy). It was discovered approximately three hours from explosion (first light) and was observed in ultraviolet and X-ray wavelengths, among others, within several hours.

Key takeaways

SN 2013fs 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 2013fs to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of SN 2013fs from memory before moving on to harder problems.

Reference excerpt

SN 2013fs is a supernova, located in the spiral galaxy NGC 7610, discovered by the Intermediate Palomar Transient Factory sky survey at Palomar Observatory on 6 October 2013 (and originally named iPTF 13dqy). It was discovered approximately three hours from explosion (first light) and was observed in ultraviolet and X-ray wavelengths, among others, within several hours. Optical spectra were obtained beginning at six hours from explosion, making these the earliest such detailed observations ever made of a supernova. The supernova was also independently discovered by Kōichi Itagaki on 7 October 2013. The star that produced SN 2013fs was a red supergiant with a mass 10 times the mass of the Sun, an effective temperature of 3,500 K, a radius 607 times the size of the Sun, and no more than a few million years old when it exploded. The star was surrounded by a relatively dense shell of gas shed by the star within the year before it exploded. Radiation emitted by the supernova explosion illuminated this shell, which had a mass of approximately one-thousandth the mass of the Sun, and its outer fringe was about five times the distance of Neptune from the Sun.

References

External links

Worked examples

Example 1 — a first encounter with SN 2013fs

Start with the simplest possible case. Write down what SN 2013fs 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 2013fs 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 2013fs 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 2013fs

In research: SN 2013fs 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 2013fs 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 2013fs is common in secondary-school and first-year university syllabi. It links to neighbouring topics Astronomical objects discovered in 2013, Pegasus (constellation), Type II supernovae, so understanding it makes those chapters shorter.
In everyday life: Look for SN 2013fs 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 2013fs in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what SN 2013fs means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain SN 2013fs out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is SN 2013fs in simple terms?

Why does SN 2013fs 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 2013fs?

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 2013fs.