Concept information
Terme préférentiel
early-type galaxy
Définition(s)
- In the Hubble classification, galaxies on the left part of the Hubble sequence. Early-type galaxies tend to have redder colors, higher average surface brightnesses, and lower neutral hydrogen content than late-type galaxies. This terminology is based on the obsolete and erroneous idea that elliptical and lenticular galaxies might be evolutionary precursors to spiral and barred spiral galaxies. (An Etymological Dictionary of Astronomy and Astrophysics, by M. Heydari-Malayeri, https://dictionary.obspm.fr/index.php?formSearchTextfield=early-type+galaxy+%28ETG%29&formSubmit=Search&showAll=1)
Concept(s) générique(s)
Synonyme(s)
- first-type galaxy
Traductions
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français
URI
http://data.loterre.fr/ark:/67375/MDL-NNGVMW06-1
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