| 1. | One solar mass is defined to be the mass of our sun , which is about 2x10 以太阳的质量为比较标准,是天文学家常用的恒星质量单位大约等于2x10 |
| 2. | If that happens before the embryo has had time to attain stellar mass , the result is a brown dwarf 假如这发生在胚胎达到恒星质量之前,结果就是一颗棕矮星。 |
| 3. | The black hole could then grow even stronger ( from the star ' s mass ) as to possibly absorb another 吸收了恒星质量之后,黑洞进一步膨大,并有可能吞噬下一颗恒星。 |
| 4. | Many of these newly formed stars are very massive and race through their evolution to explode as supernovas 许多新近形成的恒星质量都很大,并会快速演化到爆发的超新星。 |
| 5. | Because of gravitational attraction , the escape velocity at the surface of a star , say , will be higher if the star is smaller in size or heavier 恒星质量越大,体积越小,引力的羁绊便越大,所需逃逸速度亦越高。 |
| 6. | However , the massive star will have a shorter life span , for example , a 15 solar mass star can only survive for about 10 million years 有趣的是,恒星质量越大,寿命越短,例如一颗相等于15个太阳质量的恒星,便只有一千万年的寿命。 |
| 7. | After the process of matter ejection stellar body will continue collapsing into black hole if the mass of the nuclear - energy - exhausted star is more than 3 mq 星体经过物质抛射后,核能耗尽的恒星质量超过3m _ ,则此星体将继续坍缩成黑洞。 |
| 8. | The first is stellar - mass black holes , having a mass of a few solar masses as the name indicates . they are the end products of stellar evolution for very massive stars 第一类称为恒星质量黑洞,这类黑洞的质量与太阳质量的量级相若,它们都是巨大恒星演化后的最终物。 |
| 9. | The luminosity per surface area will increase because the temperature increases . but if a star is not very massive , its luminosity will drop because the size of the star protostar decreases much faster 每单位面积的光度会随著恒星的温度增加而上升,但假若恒星原恒星质量不足,它的光度会由于星体体积下降过速而不升反减。 |
| 10. | Candidates for stellar - mass black holes were identified mainly by the presence of accretion disks of the right size and speed , without the irregular flare - ups that are expected from disks around other compact objects 鉴别恒星质量黑洞主要靠合适大小和速度的增大圆盘的存在,没有认为从其它紧密物体周围闪耀的无规律的闪光。 |