Tossup
Bodies contained in these objects are analogized to cars moving through a traffic jam in a common explanation of a theory resolving their “winding problem.” Lin and Shu’s density wave theory describes these objects, which contain the majority of HII (“H two”) regions. The intrinsic luminosity of these objects is proportional to their asymptotic rotation velocity by the Tully-Fisher relation. Both prongs of Hubble’s “tuning fork” diagram contain these objects, some of which are barred. The central bulges of these objects contain supermassive black holes. For 10 points, name these disk-shaped systems of stars, gas, and dark matter, exemplified by Andromeda and the Milky Way. ■END■
ANSWER: spiral galaxies [accept barred spiral galaxies; prompt on disk galaxies until “disk” is read; prompt on galaxies or spirals; prompt on molecular clouds by asking “what objects are they contained in?”]
<Editors, Other Science>
= Average correct buzz position
Buzzes
Summary
| Tournament | Edition | TUH | Conv. % | Neg % | Average Buzz |
|---|---|---|---|---|---|
| UK (North) | UK | 5 | 80% | 60% | 98.00 |
| UK (South) | UK | 8 | 50% | 75% | 76.25 |
| Northern California | US | 4 | 100% | 50% | 77.50 |
| Southern California | US | 7 | 100% | 14% | 71.86 |
| Eastern Canada (1) | US | 5 | 80% | 40% | 81.75 |
| Eastern Canada (2) | US | 9 | 100% | 33% | 83.56 |
| Florida | US | 4 | 100% | 50% | 93.25 |
| Great Lakes | US | 12 | 92% | 17% | 68.55 |
| Lower Mid-Atlantic | US | 9 | 89% | 56% | 91.50 |
| Upper Mid-Atlantic | US | 2 | 100% | 0% | 69.00 |
| Midwest | US | 9 | 89% | 33% | 68.88 |
| North | US | 4 | 75% | 50% | 84.33 |
| Northeast | US | 10 | 80% | 20% | 76.63 |
| Pacific | US | 8 | 88% | 38% | 84.00 |
| Southeast | US | 13 | 77% | 38% | 78.50 |
| Upstate NY | US | 5 | 100% | 20% | 76.20 |