英语词汇“mk classification”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

attributive. Designating or relating to a system of spectral classification in which stars of a given spectral type are further classified into one of several (originally six) classes of luminosity. Esp. in MK classification, MK system.The luminosity classes are represented by roman numerals in the following sequence: Ia–bright supergiants, Ib–supergiants, II–bright giants, III–giants, IV–subgiants, V–main sequence dwarfs, VI–subdwarfs, (VII–white dwarfs).

ΚΠ

1953 W. W. Morgan & H. L. Johnson in Astrophysical Jrnl. 117 318 (heading) The revised Atlas system of spectral classification (MK).

1953 W. W. Morgan & H. L. Johnson in Astrophysical Jrnl. 117 319 Table 2 lists a sufficient number of standards to define the MK system... The system defined by these standards is of higher accuracy than the original MKK system.

1983 Monthly Notices Royal Astron. Soc. 202 317 The remaining 1580 [stars] have yet to be classified on the MK system. The MK unclassified objects appear to be relatively unreddened.

1986 J. B. Hearnshaw Anal. Starlight vii. 293 The notation MK (Morgan–Keenan) refers explicitly to the 1953 revision of the original MKK system of 1943.

1994 Observatory 114 167 Miss Roman..classified it on the MK system as type K5 III.

单词	mk classification
释义	> as lemmas MK classification attributive. Designating or relating to a system of spectral classification in which stars of a given spectral type are further classified into one of several (originally six) classes of luminosity. Esp. in MK classification, MK system.The luminosity classes are represented by roman numerals in the following sequence: Ia–bright supergiants, Ib–supergiants, II–bright giants, III–giants, IV–subgiants, V–main sequence dwarfs, VI–subdwarfs, (VII–white dwarfs). ΚΠ 1953 W. W. Morgan & H. L. Johnson in Astrophysical Jrnl. 117 318 (heading) The revised Atlas system of spectral classification (MK). 1953 W. W. Morgan & H. L. Johnson in Astrophysical Jrnl. 117 319 Table 2 lists a sufficient number of standards to define the MK system... The system defined by these standards is of higher accuracy than the original MKK system. 1983 Monthly Notices Royal Astron. Soc. 202 317 The remaining 1580 [stars] have yet to be classified on the MK system. The MK unclassified objects appear to be relatively unreddened. 1986 J. B. Hearnshaw Anal. Starlight vii. 293 The notation MK (Morgan–Keenan) refers explicitly to the 1953 revision of the original MKK system of 1943. 1994 Observatory 114 167 Miss Roman..classified it on the MK system as type K5 III. extracted from MKn.⁴ < as lemmas
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