| 释义 |
prenova, a. and n. Astr.|priːˈnəʊvə|
A. adj. [pre- B. 2.] Preceding development of a star into a nova.
B. n. [pre- B. 1] A star prior to its becoming a nova.
1939D. B. McLaughlin in Pop. Astron. XLVII. 418 The pre-nova stage. During this portion of its life, the star is either constant or irregularly variable through a small range. 1943Publ. Observatory Univ. Michigan VIII. 188 In the pre-nova state the star is very hot, probably 50,000° to 60,000° K. 1956Z. Kopal in A. Beer Vistas in Astron. II. 1499 (heading) Internal constitution of the pre-novae. 1957C. Payne-Gaposchkin Galactic Novae xi. 313 The pre-nova is regarded as a hydrogen-poor sub⁓dwarf with contraction the main source of energy. 1976Nature 22 Jan. 172/3 First indications that the nova was unusual came when a search for the prenova on the Palomar Sky Survey plates showed no star at the nova's position. |