astronomy

Vytautas Straižys

Vytautas Straižys 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 Vytautas Straižys rather than just read about it. In short: Vytautas Straižys (20 August 1936 – 19 December 2021) was a Lithuanian astronomer. In 1963–65 he and his collaborators created and developed the Vilnius photometric system, a seven-color intermediate band system, optimized for photometric stellar classification.

Key takeaways

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Reproduce the core statement of Vytautas Straižys from memory before moving on to harder problems.

Reference excerpt

Vytautas Straižys (20 August 1936 – 19 December 2021) was a Lithuanian astronomer. In 1963–65 he and his collaborators created and developed the Vilnius photometric system, a seven-color intermediate band system, optimized for photometric stellar classification. In 1996 he was elected a Corresponding Member of the Lithuanian Academy of Sciences. Straižys was an editor of the journal Baltic Astronomy. He spent a lot of time working at the Molėtai Astronomical Observatory. Asteroid 68730 Straizys in 2002 was named after him.

Early life and professional history Straižys was born in Utena on 20 August 1936. In 1959, he graduated from Vilnius University in astrophysics. In 1959–62, he was a graduate student of the Institute of Physics and Mathematics of the Lithuanian Academy of Sciences. In 1962–67, he was a scientific researcher at the same institute. From 1967 to 1990, he headed the Astrophysical Department of the Institute of Physics, Vilnius. In 1990–2003, he was the head of the Astronomical Observatory of the Institute of Theoretical Physics and Astronomy of Vilnius University. In 1991–96 Associate Director of the same Institute. In 2003, he became a chief researcher. In 2013, he became a professor emeritus. In 1992–93 academic year: visiting professor in Union College, Schenectady, New York.

Scientific activity Main directions of the scientific research: multicolor photometry of stars, stellar physical parameters, stellar classification, interstellar extinction, interstellar clouds, star clusters, Galactic structure. One of the authors of the Vilnius photometric system for the classification of stars. In 1969–90 conducted the construction of the Molėtai Observatory in Lithuania and the Maidanak Observatory in Uzbekistan. He was author of 324 scientific papers published between 1957 and 2009 and of three monographs: Multicolor Stellar Photometry (Vilnius, 1977, in Russian), Metal-Deficient Stars (Vilnius, 1982, in Russian) and Multicolor Stellar Photometry (Tucson, Arizona, 1992 and 1995, revised version, in English). From 1977 to 1991 he was editor of the Bulletin of the Vilnius Astronomical Observatory, from 1992 to 2021 editor of an international journal Baltic Astronomy. Scientific adviser of 22 doctoral dissertations.

Personal life and death Straižys died on 19 December 2021, at the age of 85.

Membership International Astronomical Union (IAU, 1967) Institute for Space Observations, New York (1988) European Astronomical Society (EAS, 1990) American Astronomical Society (AAS, 1991) Astronomical Society of the Pacific (ASP, 1991) American Planetary Society (1991) Astronomical Society of New York (1992) Lithuanian Astronomical Union (president 1995–2003) Vice-President and President of the IAU Commission on Stellar Classification (1979–85) Expert Member (1991–95) and Corresponding Member (since 1996) of the Lithuanian Academy of Sciences

Honours Awards

Lithuanian Republic Science Award (1973) Nomination as a distinguished scientist of Lithuania (1986) Chretien Grant of the American Astronomical Society (2000) Order of the Lithuanian Grand Duke Gediminas, Officer's Cross (2003) Lithuanian National Science Award (2004) Named after him

Asteroid 68730 Straizys

Publications V. Straizys, Multicolor Stellar Photometry (in Russian), Mokslas Publishers, Vilnius, Lithuania, 1977 V. Straizys, Metal-Deficient Stars (in Russian), Mokslas Publishers, Vilnius, Lithuania, 1982 V. Straizys, Multicolor Stellar Photometry (in English), Pachart Publishing House, Tucson, Arizona, 1992 (2nd publication in 1995) V. Straizys, The Milky Way (in Lithuanian), Mokslas Publishers, 1992 V. Straizys, Astronomy, 1993 (a textbook for secondary schools, in Lithuanian) A. Azusienis, A. Pucinskas, V. Straizys, Astronomy, 1995 (a textbook for universities, in Lithuanian, 2nd revised publication in 2003) V. Straizys, Astronomical Encyclopedic Dictionary (in Lithuanian), Institute of Theoretical Physics and Astronomy, 2002 (2nd publication in 2003)

References

Worked examples

Example 1 — a first encounter with Vytautas Straižys

Start with the simplest possible case. Write down what Vytautas Straižys 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 Vytautas Straižys 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 Vytautas Straižys 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 Vytautas Straižys

In research: Vytautas Straižys 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 Vytautas Straižys 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: Vytautas Straižys is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1936 births, 2021 deaths, 21st-century astronomers, so understanding it makes those chapters shorter.
In everyday life: Look for Vytautas Straižys 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 Vytautas Straižys in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Vytautas Straižys 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.
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Frequently asked questions

What is Vytautas Straižys in simple terms?

Why does Vytautas Straižys 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 Vytautas Straižys?

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 Vytautas Straižys.