astronomy

Jorge Sahade

Jorge Sahade 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 Jorge Sahade rather than just read about it. In short: Jorge Sahade (born February 17, 1915, in Cordoba, Argentina, died December 18, 2012) was an Argentine astronomer with more than 200 publications in journals and conferences. He was the first Latin American to achieve the presidency of the International Astronomical Union (IAU) between 1985 and 1988, and was also the first director of the Comisión Nacional de Actividades Espaciales.

Key takeaways

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

Reference excerpt

Jorge Sahade (born February 17, 1915, in Cordoba, Argentina, died December 18, 2012) was an Argentine astronomer with more than 200 publications in journals and conferences. He was the first Latin American to achieve the presidency of the International Astronomical Union (IAU) between 1985 and 1988, and was also the first director of the Comisión Nacional de Actividades Espaciales. He held this position between 1991 and 1994.

Career

He was born in Cordoba into a family of Syrian origin. In Cordoba, Sahade wished to study mathematics, but at that time, there were only university degrees in engineering and surveying. Sahade chose to study the latter at the National University of Córdoba, where he received his degree in 1937. While working at the Military Geographic Institute in La Plata, he found out about astronomy, and chose to study this at the National University of La Plata, where in 1941, he became an Astronomical Assistant at his observatory and became Doctor of Astronomical and Related Sciences in 1943. After finishing his degree, he and Carlos Ulrrico Cesco (the first astronomy graduate in the country) obtained scholarships to go to the United States to learn astrophysics. While in the United States, Sahade decided to study binary stars.

He promoted the purchase of a 215 cm diameter telescope, which is today located in the Leoncito Astronomical Complex. The construction of this telescope was in the United States. The telescope was modeled after the one at Kitt Peak National Observatory. The telescope's blueprints were a gift from Kitt Peak's director Nicholas Mayall. Between 1953 and 1955, Sahade served as Director of the Astronomical Observatory of Cordoba, and between March 1968 and July 1969 he served as director of the Observatory of La Plata. In 1969 he became the first dean of the Faculty of Exact Sciences of the National University of La Plata. He founded the Institute of Astronomy and Physics of Space (IAFE) in the first Pavilion of the University of Buenos Aires, where he was director and Alma Mater between 1971 and 1974. After leaving the CONICET and the direction of the IAFE, he continued as an IAFE researcher independently as well as working at the Argentinean Institute of Radio Astronomy (IAEA). He was the first Latin American to achieve the presidency of the International Astronomical Union (IAU) between 1985 and 1988, and was also the first director of the Comisión Nacional de Actividades Espaciales. He held this position between 1991 and 1994. One of his publications was on the study of the binary star system Beta Lyrae, which was published in the American Philosophical Society. The publication provided solutions to old problems about the systems of closed binary stars. Later astronomer Helmut Abt in the United States would confirm that the work was correct.

Awards and Acknowledgments Merit Diploma of the Konex Foundation. 1983 - Konex Prize for Physics and Astronomy Award for the trajectory of the Argentina Astronomy Association. 1986 - Asteroid 2605 (1974QA) bears the name of "Sahade". 1988 - Medal of Scientific Consecration (in Astronomy) of the Council of Advanced International Studies. 1993 - Ricardo P. Platzeck Prize in Astronomy, National Academy of Exact, Physical and Natural Sciences. 1995 - Researcher Emeritus of CONICET. 1999 - Gold Medal of the Argentina Friends of Astronomy Association. 2011 - Citizen Illustrious of the City of La Plata.

Selected publications with Su-Shu Huang, Otto Struve, and Velta Zebergs: Spectrum of Beta Lyrae. Philadelphia: American Philosophical Society. 1959. with Frank Bradshaw Wood: Interacting binary stars. Oxford; New York: Pergamon Press. 1978. Bibcode:1978ibs..book.....S. 2015 reprint Progreso en astronomía en la era espacial (= Progress in astronomy in the space age). Córdoba, Argentina: Fundación Casa de la Cultura de Córdoba. 1989; introducción de Aldo Armando Cocca{{cite book}}: CS1 maint: postscript (link) as editor with George Eadon McCluskey, Jr. and Yoji Kondo: Realm of interacting binary stars. Dordrecht; Boston: Kluwer Academic Publishers. 1993.

References

Illustrations

Worked examples

Example 1 — a first encounter with Jorge Sahade

Start with the simplest possible case. Write down what Jorge Sahade 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 Jorge Sahade 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 Jorge Sahade 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 Jorge Sahade

In research: Jorge Sahade 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 Jorge Sahade 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: Jorge Sahade is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1915 births, 2012 deaths, 20th-century Argentine astronomers, so understanding it makes those chapters shorter.
In everyday life: Look for Jorge Sahade 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 Jorge Sahade in 20 minutes

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

Frequently asked questions

What is Jorge Sahade in simple terms?

Why does Jorge Sahade 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 Jorge Sahade?

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 Jorge Sahade.