astronomy

Kristen Sellgren

Kristen Sellgren 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 Kristen Sellgren rather than just read about it. In short: Kristen Sellgren (born November 14, 1955) is an American retired astronomer and Professor Emerita at the College of Natural and Mathematical Sciences, Ohio State University. She won the Newton Lacy Pierce Prize in Astronomy in 1990.

Key takeaways

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

Reference excerpt

Kristen Sellgren (born November 14, 1955) is an American retired astronomer and Professor Emerita at the College of Natural and Mathematical Sciences, Ohio State University. She won the Newton Lacy Pierce Prize in Astronomy in 1990. She is the founder of American Astronomical Society's Committee for Sexual-Orientation & Gender Minorities in Astronomy (SGMA).

Education and career Sellgren graduated from the University of California, San Diego in 1976 with a BA in physics. She obtained a PhD in physics from the California Institute of Technology in 1983 under the advisement of B.T. Soifer and Gerry Neugebauer. Her graduate thesis was entitled Near Infrared Studies of Reflection Nebulae. Her areas of expertise include the galactic center of the Milky Way, interstellar dust, and infrared astronomy generally. After graduating with her bachelor's degree, Sellgren completed a summer research fellowship at Arecibo Observatory in Puerto Rico. After receiving her doctorate, she took a postdoctoral research position at the Space Telescope Science Institute in Baltimore, Maryland. In 1984, Sellgren joined the Institute for Astronomy at the University of Hawaiʻi first as assistant astronomer, and then in 1989, as associate astronomer. Since 1990, Sellgren has held several appointments at Ohio State University beginning with assistant professor. She was later named associate professor in 1994, and then reached full professorship in 2000 before entering into emerita status in 2011. Also in the year 2000, Sellgren served briefly as visiting professor at the University of Texas at Austin.

Honors and recognition In 1973, Sellgren won recognition as a National Merit Scholar. In the same year, she was bestowed the UC Regents Fellowship at the University of California, San Diego. She was awarded the Newton Lacy Pierce Prize in 1990 and later served as Alfred P. Sloan Research Fellow from 1991 to 1993. She was also an American Association for the Advancement of Science (AAAS) Fellow in 2011. Sellgren is a current member of the American Astronomical Society as well as the International Astronomical Union.

References

Worked examples

Example 1 — a first encounter with Kristen Sellgren

Start with the simplest possible case. Write down what Kristen Sellgren 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 Kristen Sellgren 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 Kristen Sellgren 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 Kristen Sellgren

In research: Kristen Sellgren 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 Kristen Sellgren 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: Kristen Sellgren is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1955 births, American women astronomers, California Institute of Technology alumni, so understanding it makes those chapters shorter.
In everyday life: Look for Kristen Sellgren 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.

Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “Kristen Sellgren” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Kristen Sellgren in 20 minutes

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

Frequently asked questions

What is Kristen Sellgren in simple terms?

Why does Kristen Sellgren 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 Kristen Sellgren?

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 Kristen Sellgren.