... The usual objects to use have been rare, special pulsating stars called Cepheids, or some kinds of exploding stars (supernovae ... In 1994 a team used the Hubble Space Telescope to measure the brightnesses of 20 Cepheids in a galaxy called M100. ...
... Sakai et al. (2000) presented the calibration of the TF relation based on Cepheid distances to 21 galaxies within 25 Mpc and 23 clusters within 10 000 km/s. Results: intrinsic dispersion 0.m 2, slopes (B ) = 3.2, (V ) = 3.5, (R ) = 3.5, (I ) = 3.7, (H ...
... for a type of variable stars called Cepheids, which vary in intensity in a period ... So once you can find a Cepheid, can measure its variation with time and long enough ...
... It is also a Cepheid variable that varies only slightly in a period of about four days. The 8.2 magnitude companion lies about 18 arc-seconds away. ...
... 1. Because the Sun is about 26 ± 3 pc away from the Galactic plane as inferred from classical Cepheids (Majaess, Turner & Lane 2009), Figure 3. ...
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Ссылки http://www.asc.rssi.ru/RadioAstron/publications/articles/mnras2015_452,4274.pdf -- 954.6 Кб -- 24.02.2016 Похожие документы
... Rastorguev A. S.; Berdnikov L. N.; Samus N. N.; Gorynya N. A.; Sachkov M. E.; Dambis A. K.; Zabolotskikh M. V. The Moscow Program of Cepheid Investigations. ...
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Ссылки http://phys.msu.su/rus/research/reports/PUBLICATIONS/sp_publ_2007.pdf -- 810.2 Кб -- 16.01.2009
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Ссылки http://www.phys.msu.ru/rus/research/reports/PUBLICATIONS/sp_publ_2007.pdf -- 810.2 Кб -- 16.01.2009
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Ссылки http://phys.msu.ru/rus/research/reports/PUBLICATIONS/sp_publ_2007.pdf -- 810.2 Кб -- 16.01.2009 Похожие документы