Gérard Henri de Vaucouleurs (April 25, 1918–October 7, 1995) was a French-American astronomer. April 25 is the 115th day of the year in the Gregorian Calendar (116th in leap years). ... 1918 was a common year starting on Tuesday (see link for calendar). ... October 7 is the 280th day of the year (281st in leap years). ... 1995 was a common year starting on Sunday of the Gregorian calendar. ... Wiktionary has a definition of: French Wikipedia en français French in its formal sense and used in its capitalized form, denotes: Something from or related to France. ... American, when used as an adjective, can mean of the United States of America or of or relating to the Americas; when used as a noun, United States citizen, residing in the Americas, or less frequently American English. Immigrants to the United States are usually called first-generation Americans, regardless... Wikipedia does not yet have an article with this exact name. ...

He had an early interest in amateur astronomy and received his undergraduate degree in 1939 at the Sorbonne in Paris. After military service in World War II, he resumed his pursuit of astronomy. Amateur astronomy, often called back yard astronomy, is a hobby whose participants enjoy observing celestial objects. ... 1939 was a common year starting on Sunday (link will take you to calendar). ... The Sorbonne, Paris, in a 17th century engraving The Sorbonne today, from the same point of view The historic University of Paris (French: Université de Paris) first appeared in the second half of the 12th century, but was in 1970 reorganized as 13 autonomous universities (University of Paris I–XIII). ... The Eiffel Tower has become the symbol of Paris throughout the world. ... Mushroom cloud from the nuclear explosion over Nagasaki rising 18 km into the air. ... Astronomy, which etymologically means law of the stars, (from Greek: αστρονομία = άστρον + νόμος) is a science involving the observation and explanation of events occurring outside Earth and its atmosphere. ...

Fluent in English, he spent 1949–1951 in England and 1951–1957 in Australia, the latter at Mount Stromlo Observatory. In 1960 he was appointed to the University of Texas, where he spent the rest of his career. The English language is a West Germanic language that originates in England. ... 1949 is a common year starting on Saturday. ... 1951 was a common year starting on Monday; see its calendar. ... Royal motto: Dieu et mon droit (French: God and my right) Englands location within the UK Official language English de facto Capital London de facto Largest city London Area  - Total Ranked 1st UK 130,395 km² Population  - Total (2001)  - Density Ranked 1st UK 49,138,831 377/km² Religion... 1951 was a common year starting on Monday; see its calendar. ... 1957 was a common year starting on Tuesday (link will take you to calendar). ... Australia, officially the Commonwealth of Australia, is the sixth-largest country in the world, the only country to occupy an entire continent, and the largest in the region of Australasia/Oceania. ... The old administration building with the dome of the Farnham telescope The dome of the 50-inch Great Melbourne telescope Mount Stromlo Observatory (MSO) located just outside of Canberra, Australia, is part of the Research School of Astronomy and Astrophysics at the Australian National University (ANU). ... 1960 was a leap year starting on Friday (link will take you to calendar). ... The University of Texas System comprises fifteen educational institutions in Texas, of which nine are general academic universities, and six are health institutions. ...

He specialized in the study of galaxies and was co-author of the Third Reference Catalogue of Bright Galaxies. This article is about a celestial body. ...

The de Vaucouleurs modified Hubble sequence is a widely used variant of the standard Hubble sequence The Hubble sequence is a classification of galaxy types developed by Edwin Hubble in 1936. ...

See also

• Edwin Hubble
• Hubble sequence

Edwin Powell Hubble (November 20, 1889 – September 28, 1953) was a noted American astronomer, generally credited for discovering1 and proving redshift and that the universe is expanding. ... The Hubble sequence is a classification of galaxy types developed by Edwin Hubble in 1936. ...

External links

• Biography  (http://www.nap.edu/html/biomems/gvaucouleurs.html)

Obituaries

• BAAS 28 (1996) 1449 (http://adsabs.harvard.edu//full/seri/BAAS./0028//0001449.000.html)

Other resources

• http://nedwww.ipac.caltech.edu/level5/normal_galaxies.html
• http://astrosun2.astro.cornell.edu/academics/courses/astro590/lectures/A590_07%20(Galaxy%20Classification).pdf