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astronomy

Travis Barman

Travis Barman 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 Travis Barman rather than just read about it. In short: Travis Barman is a professor at the Lunar and Planetary Laboratory at the University of Arizona, specializing in the theoretical and observational aspects of extrasolar planets. Barman was previously at the Lowell Observatory in Flagstaff, Arizona, from 2006 until 2013.

Key takeaways

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

Reference excerpt

Travis Barman is a professor at the Lunar and Planetary Laboratory at the University of Arizona, specializing in the theoretical and observational aspects of extrasolar planets. Barman was previously at the Lowell Observatory in Flagstaff, Arizona, from 2006 until 2013. While an astronomer at Lowell, he studied a combination of the previously published Hubble Space Telescope measurements and new theoretical models, and found strong evidence for water absorption in the atmosphere of HD 209458 b. A planet about 150 light years away from earth, HD 209458 b was known previously to contain an evaporating hydrogen atmosphere, along with oxygen and carbon. Though the planet is only 7 million kilometers away from its star, the planet is not hot enough to break the water molecules. HD 209458 b, a transiting planet, passes in front of its star, where it can be viewed from earth every three and a half days. When this happens, water vapor in the planet's atmosphere causes the planet to appear slightly larger in the infrared part of the starlight than in the visible portion. Barman found the water signature after applying new theoretical models he developed to visible and infrared Hubble data collected by then-Harvard graduate student Heather Knutson in 2007, which measured the perceived size of the planet over a broad range of wavelengths.

References

Worked examples

Example 1 — a first encounter with Travis Barman

Start with the simplest possible case. Write down what Travis Barman 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 Travis Barman 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 Travis Barman 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 Travis Barman

In research
Travis Barman 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 Travis Barman 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
Travis Barman is common in secondary-school and first-year university syllabi. It links to neighbouring topics 21st-century American astronomers, American astronomer stubs, Living people, so understanding it makes those chapters shorter.
In everyday life
Look for Travis Barman 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 Travis Barman in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Travis Barman 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 Travis Barman out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Travis Barman in simple terms?

Travis Barman is a professor at the Lunar and Planetary Laboratory at the University of Arizona, specializing in the theoretical and observational aspects of extrasolar planets. Barman was previously at the Lowell Observatory in Flagstaff, Arizona, from 2006 until 2013.

Why does Travis Barman 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 Travis Barman?

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 Travis Barman.

Tags

  • 21st-century American astronomers
  • American astronomer stubs
  • Living people
  • University of Arizona faculty

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