Carl Keenan Seyfert (February 11, 1911 – June 13, 1960) was an American astronomer. He is best known for his 1943 research paper on high-excitation line...
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the size of the Milky Way. Seyfert galaxies are named after Carl Seyfert, who first described this class in 1943. Seyfert galaxies were first detected...
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Seyfert is a prominent lunar impact crater that is located on the far side of the Moon. It was named after American astronomer Carl Keenan Seyfert. It...
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co;2. International Tectonic Dictionary – AAPG Memoir 7, 1967 The Encyclopedia of Structural Geology and Plate Tectonics – Ed. by Carl K. Seyfert, 1987...
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individual galaxies in the group. The group members were discovered by Carl Keenan Seyfert using photographic plates made at the Barnard Observatory of Vanderbilt...
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Active galactic nucleus (redirect from Seyfert flare)
Bibcode:1939LicOB..19...33M. doi:10.5479/ADS/bib/1939LicOB.19.33M. Seyfert, Carl K. (1943). "Nuclear Emission in Spiral Nebulae". The Astrophysical Journal...
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NGC 7469 (category Seyfert galaxies)
2 Seyfert galaxy and one of the most well studied Seyfert galaxies. In 1943, this galaxy was one of six nebulae listed by American astronomer Carl K. Seyfert...
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NGC 3516 (category Seyfert galaxies)
astronomer Carl Keenan Seyfert that showed broad emission lines in their nuclei. Members of this class of objects became known as Seyfert galaxies, and...
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IRAS 13218+0552 (category Seyfert galaxies)
light-years away from Earth. It is a Seyfert galaxy and a luminous infrared galaxy. IRAS 13218+0552 is classified as a Seyfert type 1.5 galaxy given its large...
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NGC 5548 (category Seyfert galaxies)
astronomer Carl Keenan Seyfert that showed broad emission lines in their nuclei. Members of this class of objects became known as Seyfert galaxies, and...
15 KB (1,172 words) - 22:03, 11 September 2023