| 词汇 | example_english_background-star |
| 释义 | background starcollocation in Englishmeanings of backgroundand starThese words are often used together. Click on the links below to explore the meanings. Or, see other collocations with background or star. background adjective[before noun] uk /ˈbæk.ɡraʊnd/ us /ˈbæk.ɡraʊnd/ used to refer to something that is done before, and in preparation for, ... See more at background star noun uk /stɑːr/ us /stɑːr/ a very large ball of burning gas in space that is usually seen from the earth as a point of light in the sky ... See more at star Examples of background starThese examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. With high enough temporal resolution even the angular size of the backgroundstar can be determined. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. To find planets using that method, the backgroundstar is temporarily magnified by a foreground star because of the gravity that bends light. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. If the foreground star has a planet, the light from backgroundstar would be slightly brighter than the star with no planet. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Studying the brightness difference of backgroundstar between the foreground star with planets and foreground star with no planets, then mass can be estimated. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. When a planetary-sized object passes in front of a backgroundstar, its gravitational field causes a momentary increase in the visible brightness of the backgroundstar. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. For definiteness, we assume that background stars are ten times more distant than the target star. First, although the fields of view contain typically many stars besides the target star, these background stars are also much more distant. One potential problem - possible confusion from background stars, particularly eclipsing binaries near the line of sight to a foreground target star - is addressed here. This increases the risk of degraded photometric accuracy due to background stars. This conclusion holds both for the case of background stars in the field of view of the target star and from objects (such as planets) orbiting the target star. In particular, the lower limit of its 1.653.8 m color of 3.1 magnitudes excludes background stars and most brown dwarfs. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is therefore possible that the two background stars are bound, but it is not certain. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Alternatively, when the satellite is in sunlight, it can be photographed against the background stars. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The concentration of dust within molecular cores is normally sufficient to block light from background stars so that they appear in silhouette as dark nebulae. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. By studying these images, they can detect solar system objects by their movements relative to the background stars, which remain fixed. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This survey only covered a portion of the ecliptic about the vernal equinox, with the target areas selected to minimize the number of background stars. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is projected in front of the galactic bulge and is therefore useful for its microlensing effect on the background stars in the bulge. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Of the two fundamental planes, the ecliptic is closer to unmoving against the background stars, its motion due to planetary precession being roughly 1/100 that of the celestial equator. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. Want to learn more? Go to the definition of background Go to the definition of star See other collocations with background See other collocations with star |
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