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10/29/2008 - Giant Planet Formation
ซีรีส์ที่ถูกเก็บถาวร ("ฟีดที่ไม่ได้ใช้งาน" status)
When? This feed was archived on September 13, 2022 18:20 (). Last successful fetch was on June 10, 2022 09:10 ()
Why? ฟีดที่ไม่ได้ใช้งาน status. เซิร์ฟเวอร์ของเราไม่สามารถดึงฟีดพอดคาสท์ที่ใช้งานได้สักระยะหนึ่ง
What now? You might be able to find a more up-to-date version using the search function. This series will no longer be checked for updates. If you believe this to be in error, please check if the publisher's feed link below is valid and contact support to request the feed be restored or if you have any other concerns about this.
Manage episode 121133711 series 103556
The observed properties of giant planets, models of their evolution, and observations of protoplanetary disks all provide constraints on the formation of gas giant planets. The four largest planets in our Solar System contain considerable quantities of hydrogen and helium, which could not have condensed into solid planetesimals within the protoplanetary disk. The preponderance of evidence supports the core nucleated gas accretion model of formation of the giant planets. According to this model, giant planets begin their growth by the accumulation of small solid bodies, as do terrestrial planets. However, unlike terrestrial planets, the growing giant planet cores become massive enough that they are able to accumulate substantial amounts of gas before the protoplanetary disk dissipates. During this talk, Dr. Lissauer will present the first models of giant planet formation that account for both the planet's internal energy budget and gas flows within the protoplanetary disk.
17 ตอน
ซีรีส์ที่ถูกเก็บถาวร ("ฟีดที่ไม่ได้ใช้งาน" status)
When? This feed was archived on September 13, 2022 18:20 (). Last successful fetch was on June 10, 2022 09:10 ()
Why? ฟีดที่ไม่ได้ใช้งาน status. เซิร์ฟเวอร์ของเราไม่สามารถดึงฟีดพอดคาสท์ที่ใช้งานได้สักระยะหนึ่ง
What now? You might be able to find a more up-to-date version using the search function. This series will no longer be checked for updates. If you believe this to be in error, please check if the publisher's feed link below is valid and contact support to request the feed be restored or if you have any other concerns about this.
Manage episode 121133711 series 103556
The observed properties of giant planets, models of their evolution, and observations of protoplanetary disks all provide constraints on the formation of gas giant planets. The four largest planets in our Solar System contain considerable quantities of hydrogen and helium, which could not have condensed into solid planetesimals within the protoplanetary disk. The preponderance of evidence supports the core nucleated gas accretion model of formation of the giant planets. According to this model, giant planets begin their growth by the accumulation of small solid bodies, as do terrestrial planets. However, unlike terrestrial planets, the growing giant planet cores become massive enough that they are able to accumulate substantial amounts of gas before the protoplanetary disk dissipates. During this talk, Dr. Lissauer will present the first models of giant planet formation that account for both the planet's internal energy budget and gas flows within the protoplanetary disk.
17 ตอน
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