Cluster 4 Exploring the Universe - Education and Advanced Learning
Exploring the Universe HW4
2
Arny Chapter : #8 QFR 8. An interstellar cloud is an enormous rotating aggregate of gas and dust in between the stars. What it has to do with the solar system is that the solar nebula theory proposes that the solar system was born from one 4.6 billion years ago. 12. Planetesimal is one of the numerous small, solid bodies that, when accreted together, form a planet. 16. The theory of how planets may have formed their atmospheres is that some planets probably created their original atmospheres by volcanic eruptions and by retaining gases from infalling comets and icing planetesimals that vaporized on impact. PR 5. , ,P=5 days G=1 Solar Mass a=0.8587AU Stimets Chapter : #6 QUES 7. Four techniques that have been used to detect extrasolar planets are Direct imaging, Doppler, Transit, and Microlensing. The Doppler technique has been the most successful so far with more than 300 detections to its credit. 10. The biases of the Doppler method is toward detecting
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Exploring the Universe HW4
Transcript of Exploring the Universe HW4
Arny Chapter : #8
QFR
8. An interstellar cloud is an enormous rotating aggregate of gas and dust in between the stars. What it has to do with the solar system is that the solar nebula theory proposes that the solar system was born from one 4.6 billion years ago.
12. Planetesimal is one of the numerous small, solid bodies that, when accreted together, form a planet.
16. The theory of how planets may have formed their atmospheres is that some planets probably created their original atmospheres by volcanic eruptions and by retaining gases from infalling comets and icing planetesimals that vaporized on impact.
PR
5. ,,P=5 days
G=1 Solar Mass
a=0.8587AU
Stimets Chapter : #6
QUES
7. Four techniques that have been used to detect extrasolar planets are Direct imaging, Doppler, Transit, and Microlensing. The Doppler technique has been the most successful so far with more than 300 detections to its credit.
10. The biases of the Doppler method is toward detecting massive planets close to their parent stars, so its not surprising that most of the planets are of this type.
PR
1. T2/T1=sqd1/d2
T2/300K=sq1AU/30AU
T2=sq1AU/30AU(300K)
T2=54.77K
