主序星

恒星进行了从主序星到热脉动AGB星的演化模型计算，结果表明新判据能很好地反映5M（？）

Having carried on evolution model calculation from the main sequence star to the thermal pulsation AGB star for a 5M (?) star , such numerical calculation result agrees with the prediction of the new criterion .

从1992年第一个确认了脉冲星PSR1257+12的行星系统以来，1995年确认主序星51Peg有一颗行星，至2001年5月，已经发现了60个太阳系外的行星系统。

Since the first affirmance of an extrasolar planetary system in pulsar PSR1257 + 12 , and first discovery of a planet in a main sequence star , 51 Peg , in 1995 , about half hundred of extrasolar planets have been discovered .

自转效应通过自转角速度和自转角速度的变化对恒星在主序星前期和红巨星后期的影响较大，而湍流压在AGB星阶段的影响较大。

Rotation effect has the great influence on star in the former stage of main sequence and in the latter stage of Red Giant through the angular velocity and the change of rotational angular velocity ; turbulent pressure in the stage of AGB star . ( 3 ) .

由氢向氦的转变是主序星能量的主要来源。

Hydrogen to helium conversion provides the prime source of energy for stars on the main sequence .

我们通过对大样本恒星的统计分析分别得到了晚型主序星磁活动与恒星自转参量间以及磁活动与恒星色指数之间更广泛意义的数值关系。

Using large samples , we gain several credible numeric relation between different magnetic activity index and rotational parameters .

太阳剩余磁场是指形成于太阳主序星阶段之前，深藏在太阳辐射核内部的原始磁场。

It is really possible that the Sun possesses a relic magnetic field of the pre-main sequence epoch in its radiative core .

在历经主序星、红巨星和白矮星或中子星后演化为致密星体而结束一生。

During the radiation stars will develop in turn into main sequence stars , red giants , white dwarfs or neutron stars , etc.

在第一部分引言中，说明现代恒星演化学说的分歧主要是在恒星形成主序星以后的演化。

In the first introductory part it is pointed out that the main difference among current theories of stellar evolution is in the evolutionary stage after stars move onto the main sequence .

太阳演化到主序星阶段以来，由于日冕膨胀丢失了80%的角动量，太阳自转角速度正以指数律下降。因此，这将对太阳动力演化起到很大的影响。

Since the solar evolution reached to the main sequence stage , the sun lost the 80 % of its angular momentum , thus the angular velocity of its rotation is reducing by the power index law .