Milone et al. 2017 classified some of these systems as “metal-complex” since pseudo two-color diagrams of them are more complicated than the typical chromosome-like shape. These systems are characterized by an anticorrelation between sodium and oxygen abundances. The high nitrogen content of the galaxy GN-z11 supports the hypothesis that some of these systems, classified as Type II by Pieter Oosterhoff, are remnants of the nuclei of disrupted (*) dwarf galaxies. A prototypical one of these systems, 47 Tucanae, contains an intermediate-mass black hole as well as many millisecond pulsars, RR Lyrae stars, and blue stragglers. The brightest of these long-lived, gravitationally bound systems of Population II stars is Omega Centauri. For 10 points, what spherical groups of stars are larger than their “open” counterparts? ■END■
| 2025 Chicago Open | 2025-08-09 | Y | 12 | 100% | 0% | 17% | 113.17 |
| Player | Team | Opponent | Buzz Position | Value |
|---|---|---|---|---|
| Eric Mukherjee | Floridovician | Will They Ever Finish Bruckner’s Ninth Boulevard? | 76 | -5 |
| Stephen Liu | Will They Ever Finish Bruckner’s Ninth Boulevard? | Floridovician | 77 | 10 |
| June Yin | It's not X, but... defenders | Li Bai Chocolate Mushussu Pacha Latte | 93 | 10 |
| Kevin Peng | Please sir, may I have some morb? | Big is moving to Evanston! | 105 | -5 |
| Vivek Sasse | "Real quiz bowl" only consists of the ACF academic pyramidal scene and the late 2010s NAQT scene. | The Met on Laserdisc. Bravo! | 105 | 10 |
| Billy Busse | BHSU B | BHSU X | 116 | 10 |
| Ophir Lifshitz | I worship the Pyramid (abandoned Soviet coal mining settlement on the Norwegian archipelago of Svalbard) | Woke Michael Du be like "I'm a genders player" | 116 | 10 |
| Dan Ni | Enjoying the Hole Experience | No, explaining that your buzz came from watching an isekai is not "Proustian" | 118 | 10 |
| Dylan Minarik | The RAND Coöperation | One Microscopic Pog in His Chat-astrophic Plan | 120 | 10 |
| Aseem Keyal | Broken Socal Scene | Thamos, King of Egypt: The Sahara of the Mozart | 122 | 10 |
| Raul Passement | Mumbo Jumbo Will Labubu | Halifax Shipping Services | 122 | 10 |
| Conor Thompson | "real numbers are uncountable" factoid actually just statistical error. diagonal georg | Do re mi fa serving negs | 123 | 10 |
| Munir Siddiqui | Big is moving to Evanston! | Please sir, may I have some morb? | 123 | 10 |
| Eric Bobrow | 8, 8, 8, 8, 8, 8, 2k5, RNBQKBNR b Q - 99 66 | The True Dharma Eye of the Juan Soto School | 123 | 10 |