0 文档热度: 文档分类: 待分类 文档标签: MultiperiodicRRLyraestarsinthecenterofGalaxy 系统标签: multiperiodiclyraegalaxystarscentermax a r X i v : a s t r o - p h / 0 4 0 1 6 1 2 v 1 2 9 J a n 2 0 0 4 ×10 −4 χ 2 A ij = A i A j Φ ij =j·φ i −i·...
There are at least one hundred ___ stars in the Galaxy and its center looks brightest. A. billion B. billions of C. billion of D. billions 相关知识点: 试题来源: 解析 考察billion的用法。在银河系至少有一千亿颗星星并且它的中心看起来是最亮的。at least至少。billion十亿,billion与具体数字...
The spatial density of the Galactic Center X-ray sources falls off as R−2, similar to that of the infrared stars in the field. This highlights the possibility that these X-ray sources can be used tWileyAstronomische Nachrichten
百度试题 结果1 题目There are at least one hundred ___ stars in the Galaxy and its center looks brightest. A. billion B. billion of C. billions D. billions of 相关知识点: 试题来源: 解析 A. billion 反馈 收藏
Astronomers know a great deal about planetary nebulas, but an arrangement of such clouds in the galactic bulge at the center of our Milky Way galaxy has still been a puzzle since its discovery 10 years ago by Manchester Ph.D. student Bryan Rees. Now, this mystery has been exorcised thanks...
Exploring Halo Substructure with Giant Stars: Spectroscopy of Stars in the Galactic Anticenter Stellar Structure To determine the nature of the recently discovered, ringlike stellar structure at the Galactic anticenter, we have collected spectra of a set of presumed c... Jeffrey,D.,Crane,... -...
In this talk, I will firstly introduce HIFAST, an HI data calibration and imaging pipeline for FAST, and present some results on the HI data quality observed from the FAST. Finally, some preliminary results from the deep survey from the M31 halo region will be shared. 个人简介: 王杰,中科院...
Tidal Disruption Events (TDEs) are processes where stars are torn apart by the strong gravitational force near to a massive or supermassive black hole. If a jet is launched in such a process, particle acceleration may take place in internal shocks. We de
Largest star in the galaxy The largest star that we know about is called the Pistol Star(手枪星). The Pistol Star is closer to the center of the Milky Way than we are. Because of space dust we can't see it with the naked eye(肉眼). It's about 100 times the size of our sun, ...
This black hole, in the center of the galaxy M87, is ejecting a stream of material out from itself. Such supermassive black holes are many times the mass of the Sun. A stellar mass black hole would be much smaller than this, and much less massive, since it's made from the mass of ...