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HD 70052


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관련 글

Semiregular variables of types SRa and SRb - Basic properties in the visual and the IRAS-range
The pulsational properties, T(eff)s, mass loss rates, luminosities,scale heights, and volume densities in the Galactic plane are presentedfor samples of optical semiregular variables of types SRa and SRbcorrelated with the IRAS point source catalog. These properties arecompared to the corresponding characteristics of optical Mira variables.It is found that the SRa's are not a distinct class of variables but amixture of 'intrinsic' Miras and SRb's. The O-rich SRb's form a quitehomogeneous group in terms of periods, amplitudes, and temperatures.They consist of a 'blue' group with no indication of circumstellarshells, with P less than 150 d and T(eff) greater than 3200 K, and a'red' group with temperatures and mass loss rates comparable to Mirasbut periods about a factor of two smaller. The C-rich SRVs generallyhave smaller periods and are more abundant than C-rich Miras. Theevolutionary status of the SRVs is discussed.

62nd Name-List of Variable Stars
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다음 그룹에 속해있음:


관측 및 측정 데이터

별자리:바다뱀자리
적경:08h19m59.06s
적위:+00°12'58.1"
가시등급:8.222
적경상의 고유운동:4.2
적위상의 고유운동:-9.1
B-T magnitude:10.246
V-T magnitude:8.39

천체목록:
일반명   (Edit)
HD 1989HD 70052
TYCHO-2 2000TYC 196-586-1
USNO-A2.0USNO-A2 0900-05892935

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