astronomy

OGLE2-TR-L9b

OGLE2-TR-L9b 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 OGLE2-TR-L9b rather than just read about it. In short: OGLE2-TR-L9b is an extrasolar planet discovered by three undergraduate students from Leiden University, Netherlands. The planet is about 4.5 times as massive as Jupiter and is the first discovered planet orbiting a fast-rotating hot star.

Key takeaways

OGLE2-TR-L9b belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect OGLE2-TR-L9b to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of OGLE2-TR-L9b from memory before moving on to harder problems.

Reference excerpt

OGLE2-TR-L9b is an extrasolar planet discovered by three undergraduate students from Leiden University, Netherlands. The planet is about 4.5 times as massive as Jupiter and is the first discovered planet orbiting a fast-rotating hot star. Initially discovered while testing a method for investigating light fluctuations in the OGLE database, the planet's existence was later confirmed by follow-up observations from the ESO's Very Large Telescope in Chile.

See also Optical Gravitational Lensing Experiment OGLE OGLE-TR-113b OGLE-TR-10b OGLE-TR-111b OGLE-TR-56b

References

External links Media related to OGLE2-TR-L9 b at Wikimedia Commons

"OGLE2-TR-L9". Exoplanets. Archived from the original on 2016-03-03. Retrieved 2009-05-01. Students Discover Unique Planet "Students find planet outside our solar system". NBC News. 2008-12-04. Retrieved 2008-12-04.

Illustrations

Worked examples

Example 1 — a first encounter with OGLE2-TR-L9b

Start with the simplest possible case. Write down what OGLE2-TR-L9b 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 OGLE2-TR-L9b 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 OGLE2-TR-L9b 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 OGLE2-TR-L9b

In research: OGLE2-TR-L9b 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 OGLE2-TR-L9b 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: OGLE2-TR-L9b is common in secondary-school and first-year university syllabi. It links to neighbouring topics Carina (constellation), Exoplanet stubs, Exoplanets discovered in 2008, so understanding it makes those chapters shorter.
In everyday life: Look for OGLE2-TR-L9b 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 OGLE2-TR-L9b in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what OGLE2-TR-L9b 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 OGLE2-TR-L9b out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is OGLE2-TR-L9b in simple terms?

Why does OGLE2-TR-L9b 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 OGLE2-TR-L9b?

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 OGLE2-TR-L9b.