例句與造句

1. The primary star is a supergiant Classical Cepheid variable.
2. Without the other pulsation modes it would be considered a Classical Cepheid variable.
3. Delta Cephei, the prototypical classical Cepheid variables, is also a member of a star cluster.
4. "' FF Aquilae "'is a classical Cepheid variable star located in the constellation Aquila.
5. Yellow supergiants are usually variable, often Classical Cepheid variables, but 35 Cyg is notable for having an especially constant brightness.
6. It's difficult to find classical cepheid variables in a sentence. 用classical cepheid variables造句挺難的
7. Beyond the reach of the Wilson Bappu effect, the next method relies on the period-luminosity relation of classical Cepheid variable stars.
8. Classical Cepheid variables typically have supergiant luminosity classes, although only the most luminous and massive will actually go on to develop an iron core.
9. Classical Cepheid variables were B type main sequence stars earlier than about B7, possibly late O stars, before they ran out of hydrogen in their cores.
10. At higher masses the stars would pulsate as Classical Cepheid variables while crossing the instability strip, but massive subgiant evolution is very rapid and it is difficult to detect examples.
11. There exists a well-defined relationship between a classical Cepheid variable's luminosity and pulsation period, HST observations of classical Cepheid variables have enabled firmer constraints on Hubble's law.
12. There exists a well-defined relationship between a classical Cepheid variable's luminosity and pulsation period, HST observations of classical Cepheid variables have enabled firmer constraints on Hubble's law.
13. While cooling for the first time or when performing a sufficiently extended blue loop, yellow supergiants will cross the instability strip and pulsate as Classical Cepheid variables with periods around ten days and longer.
14. S Sagittae is a Classical Cepheid variable that varies from magnitude 5.24 to 6.04 in 8.38 days . It is a yellow-white supergiant that varies between spectral types F6Ib and G5Ib.
15. In 1924, Edwin Hubble established the distance to classical Cepheid variables in the Andromeda Galaxy, until then known as the " Andromeda " galaxies in the Universe [ see Great Debate ( astronomy ) ].
16. S Normae is a Classical Cepheid variable with a visual magnitude range of 6.12 to 6.77 and a period of 9.75411 days . The spectral type varies during the pulsation cycle from F8 to G0.
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