Ejnar Hertzsprung’s Followers (2)

Ejnar Hertzsprung

Born

in Copenhagen, Denmark

October 08, 1873

Died

October 21, 1967

Website

http://en.wikipedia.org/wiki/Ejnar_Hertzsprung

Genre

Science, Chemistry, Astronomy

Influences

Hermann Carl Vogel, Angelo Secchi, Jan Oort ...more

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Ejnar Hertzsprung (Danish pronunciation: [ɑjnɐ ˈhæɐ̯d̥sb̥ʁɔŋ], 8 October 1873 – 21 October 1967) was a Danish chemist and astronomer.

Hertzsprung was born in Copenhagen. In the period 1911–1913, together with Henry Norris Russell, he developed the Hertzsprung–Russell diagram.

In 1913 he determined the distances to several Cepheid variable stars by statistical[clarification needed] parallax, and was thus able to calibrate the relationship discovered by Henrietta Leavitt between Cepheid period and luminosity. In this determination he made a mistake, possibly a slip of the pen, putting the stars 10 times too close. He used this relationship to estimate the distance to the Small Magellanic Cloud.

From 1919 to 1946 Hertzsprung worked at Leiden Obse ...more

Combine Editions
Ejnar Hertzsprung’s books

Average rating: 0.0 · 0 ratings · 0 reviews · 5 distinct works

	Photographic measurements of double stars from 1914.0 to 1919.4 0.00 avg rating — 0 ratings — published 1920	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
	Effective wavelengths of stars in the Pleiades from plates taken at Mount Wilson, 1923 [Leather Bound] 0.00 avg rating — 0 ratings	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
	MEAN COLOUR EQUIVALENTS AND HYPOTHETICAL ANGULAR SEMI-DIAMETERS OF 734 STARS BRIGHTER THAN THE FIFTH MAGNITURE AND WITHIN 95 DEGREES OF THE NORTH POLE 0.00 avg rating — 0 ratings	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
	EFFECTIVE WAVELENGTHS OF STARS IN THE PLEIADES FROM PLATES TAKEN AT MOUNT WILSON 0.00 avg rating — 0 ratings	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
	Effective wave-lengths of 184 stars in the cluster N.G.C. 1647: Effective wave-lengths of absolutely faint stars 0.00 avg rating — 0 ratings	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars

More books by Ejnar Hertzsprung…

Quotes by Ejnar Hertzsprung (?)

“In my opinion the separation of the c- and ac-stars is the most important advancement in stellar classification since the trials by Vogel and Secchi ... To neglect the c-properties in classifying stellar spectra, I think, is nearly the same thing as if a zoologist, who has detected the deciding differences between a whale and a fish, would continue classifying them together.”
― Ejnar Hertzsprung

tags: angelo-secchi, astronomy, categorizing, hermann-carl-vogel, opinion, secchi, stars, stellar-classification, stellar-spectra, vogel

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