{ "132901-21872051": { "datetime_modified":"20250219T112317", "datetime_start":"20250227T153000", "datetime_end":"20250227T162000", "has_end_time":1, "date_start":"2025-02-27", "date_end":"2025-02-27", "time_start":"15:30:00", "time_end":"16:20:00", "time_zone":"America\/Detroit", "event_title":"The Department of Astronomy 2024-2025 Colloquium Series Presents:", "occurrence_title":"", "combined_title":"The Department of Astronomy 2024-2025 Colloquium Series Presents:: Dr. Sarah Moran, NASA Hubble Fellowship Program (NHFP) Sagan Fellow", "event_subtitle":"Dr. Sarah Moran, NASA Hubble Fellowship Program (NHFP) Sagan Fellow", "event_type":"Lecture \/ Discussion", "event_type_id":"13", "description":"\"Cloudy and Hazy Worlds in the Era of JWST\"\r\n\r\nAerosols are everywhere. I will discuss two avenues where our understanding of photochemical hazes and condensation clouds has advanced for exoplanetary atmospheres. Both kinds of aerosols fundamentally shape the atmospheric chemistry of a variety of exoplanets, with subsequent impacts on observations from a variety of facilities, including JWST. First, I will present results on the properties of photochemical haze particles produced from laboratory studies and the ways we may begin untangling these properties with JWST\u2019s instrumentation for the most promising planetary targets. Second, I will focus on updates to our understanding of exoplanet clouds. Clouds made of silicate materials are thought to be the dominant cloud species that affects our interpretations of hot Jupiters, but the underlying laboratory data typically used for such interpretation does not fully capture the complexity of these materials. I will discuss my recent efforts to properly account for this complexity by considering mineral polymorphs and non-spherical cloud particle models. Properly accounting for the full chemical and physical complexity of both condensate and photochemical aerosol particles in exoplanet atmospheres will let us use them as atmospheric tracers of planetary conditions.", "occurrence_notes":null, "guid":"132901-21872051@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/132901", "building_id":"1000167", "building_name":"West Hall", "campus_maps_id":"163", "room":"411", "location_name":"West Hall", "has_livestream":0, "cost":"", "tags":["astrophysics","astronomy"], "website":"https:\/\/lsa.umich.edu\/astro", "sponsors":[ { "group_name":"Department of Astronomy", "group_id":"1178", "website":"" }, { "group_name":"Department of Physics", "group_id":"1965", "website":"" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2025\/02\/event_132901_original-1.png", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_thumb\/media\/attachments\/2025\/02\/event_132901_original-1.png", "event_large":"https:\/\/events.umich.edu\/media\/cache\/event_large\/media\/attachments\/2025\/02\/event_132901_original-1.png", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/event_large_2x\/media\/attachments\/2025\/02\/event_132901_original-1.png", "event_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/event_large_lightbox\/media\/attachments\/2025\/02\/event_132901_original-1.png", "group_thumb":"https:\/\/events.umich.edu\/media\/cache\/group_thumb\/media\/attachments\/2025\/02\/event_132901_original-1.png", "group_thumb_square":"https:\/\/events.umich.edu\/media\/cache\/group_thumb_square\/media\/attachments\/2025\/02\/event_132901_original-1.png", "group_large":"https:\/\/events.umich.edu\/media\/cache\/group_large\/media\/attachments\/2025\/02\/event_132901_original-1.png", "group_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/group_large_lightbox\/media\/attachments\/2025\/02\/event_132901_original-1.png", "event_large_crop":"https:\/\/events.umich.edu\/media\/cache\/event_large_crop\/media\/attachments\/2025\/02\/event_132901_original-1.png", "event_list":"https:\/\/events.umich.edu\/media\/cache\/event_list\/media\/attachments\/2025\/02\/event_132901_original-1.png", "event_list_2x":"https:\/\/events.umich.edu\/media\/cache\/event_list_2x\/media\/attachments\/2025\/02\/event_132901_original-1.png", "event_grid":"https:\/\/events.umich.edu\/media\/cache\/event_grid\/media\/attachments\/2025\/02\/event_132901_original-1.png", "event_grid_2x":"https:\/\/events.umich.edu\/media\/cache\/event_grid_2x\/media\/attachments\/2025\/02\/event_132901_original-1.png", "event_feature_large":"https:\/\/events.umich.edu\/media\/cache\/event_feature_large\/media\/attachments\/2025\/02\/event_132901_original-1.png", "event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_feature_thumb\/media\/attachments\/2025\/02\/event_132901_original-1.png" }, "occurrence_count":1, "first_occurrence":21872051 } , "133067-21872335": { "datetime_modified":"20250223T205420", "datetime_start":"20250227T160000", "datetime_end":"20250227T170000", "has_end_time":1, "date_start":"2025-02-27", "date_end":"2025-02-27", "time_start":"16:00:00", "time_end":"17:00:00", "time_zone":"America\/Detroit", "event_title":"Commutative Algebra Seminar -- Singularity Thresholds of Complete Intersections", "occurrence_title":"", "combined_title":"Commutative Algebra Seminar -- Singularity Thresholds of Complete Intersections: Ben Baily", "event_subtitle":"Ben Baily", "event_type":"Workshop \/ Seminar", "event_type_id":"21", "description":"Let X be a smooth complex variety and Y a proper closed subscheme of X. The log canonical threshold (lct) of the pair (X,Y) is a positive rational number which measures the singularities of Y, and the study of this quantity is an important topic in birational geometry with connections to the minimal model program. In positive characteristic, one instead typically studies the F-pure threshold (fpt) of a pair. When R is a F-finite ring and I an ideal of R, the quantity fpt(R,I) measures how far the ring R\/I is from being strongly F-regular.\r\n\r\nIn 2014, Demailly and Phan defined an invariant of a pair (R, I) in terms of certain mixed multiplicities of the ideal I and showed that this invariant is a lower bound on the log canonical threshold. In the case of a pair (R, I), where R is a polynomial ring and I is an ideal generated by a homogeneous regular sequence, we classify exactly when the log canonical threshold is equal to Demailly and Phan's invariant.", "occurrence_notes":null, "guid":"133067-21872335@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/133067", "building_id":"1000166", "building_name":"East Hall", "campus_maps_id":"53", "room":"3088", "location_name":"East Hall", "has_livestream":0, "cost":"", "tags":["Mathematics"], "website":"", "sponsors":[ { "group_name":"Commutative Algebra Seminar - Department of Mathematics", "group_id":"4886", "website":"" }, { "group_name":"Department of Mathematics", "group_id":"3791", "website":"" } ], "image_url":"", "styled_images":{ "event_thumb":"", "event_large":"", "event_large_2x":"", "event_large_lightbox":"", "group_thumb":"", "group_thumb_square":"", "group_large":"", "group_large_lightbox":"", "event_large_crop":"", "event_list":"", "event_list_2x":"", "event_grid":"", "event_grid_2x":"", "event_feature_large":"", "event_feature_thumb":"" }, "occurrence_count":1, "first_occurrence":21872335 } , "130437-21866019": { "datetime_modified":"20250128T134034", "datetime_start":"20250227T160000", "datetime_end":"20250227T170000", "has_end_time":1, "date_start":"2025-02-27", "date_end":"2025-02-27", "time_start":"16:00:00", "time_end":"17:00:00", "time_zone":"America\/Detroit", "event_title":"EEB Thursday Seminar Series - The Ecological Impacts of Nitrogen Deposition: Insights From The Carnivorous Pitcher Plant Sarracenia purpurea", "occurrence_title":"", "combined_title":"EEB Thursday Seminar Series - The Ecological Impacts of Nitrogen Deposition: Insights From The Carnivorous Pitcher Plant Sarracenia purpurea: Nick Gotelli, The University of Vermont", "event_subtitle":"Nick Gotelli, The University of Vermont", "event_type":"Workshop \/ Seminar", "event_type_id":"21", "description":"The burning of fossil fuels and the widespread use of synthetic fertilizers over the past century has more than doubled the concentration of phosphorus and reactive nitrogen in all aquatic and terrestrial habitats. This seminar explores the effects of anthropogenic nutrient deposition on the plant physiology and population growth of the carnivorous pitcher plant Sarracenia purpurea and on the microbial dynamics of the micro-ecosystem and food web that develops in the aquatic pools of its cupped leaves. This model system allows for unique insights from a combination of field experiments, greenhouse manipulations, long-term monitoring, and modeling.", "occurrence_notes":null, "guid":"130437-21866019@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/130437", "building_id":"1005169", "building_name":"Biological Sciences Building", "campus_maps_id":"631", "room":"1060", "location_name":"Biological Sciences Building", "has_livestream":0, "cost":"", "tags":["evolutionary biology","seminar","Science","Ecology","Ecology And Evolutionary Biology","Ecology & Biology"], "website":"https:\/\/www.uvm.edu\/~ngotelli\/homepage.html", "sponsors":[ { "group_name":"EEB Thursday Seminars", "group_id":"3822", "website":"" }, { "group_name":"Program in Biology", "group_id":"3783", "website":"" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2025\/01\/event_130437_original-1.png", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_thumb\/media\/attachments\/2025\/01\/event_130437_original-1.png", "event_large":"https:\/\/events.umich.edu\/media\/cache\/event_large\/media\/attachments\/2025\/01\/event_130437_original-1.png", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/event_large_2x\/media\/attachments\/2025\/01\/event_130437_original-1.png", "event_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/event_large_lightbox\/media\/attachments\/2025\/01\/event_130437_original-1.png", "group_thumb":"https:\/\/events.umich.edu\/media\/cache\/group_thumb\/media\/attachments\/2025\/01\/event_130437_original-1.png", "group_thumb_square":"https:\/\/events.umich.edu\/media\/cache\/group_thumb_square\/media\/attachments\/2025\/01\/event_130437_original-1.png", "group_large":"https:\/\/events.umich.edu\/media\/cache\/group_large\/media\/attachments\/2025\/01\/event_130437_original-1.png", "group_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/group_large_lightbox\/media\/attachments\/2025\/01\/event_130437_original-1.png", "event_large_crop":"https:\/\/events.umich.edu\/media\/cache\/event_large_crop\/media\/attachments\/2025\/01\/event_130437_original-1.png", "event_list":"https:\/\/events.umich.edu\/media\/cache\/event_list\/media\/attachments\/2025\/01\/event_130437_original-1.png", "event_list_2x":"https:\/\/events.umich.edu\/media\/cache\/event_list_2x\/media\/attachments\/2025\/01\/event_130437_original-1.png", "event_grid":"https:\/\/events.umich.edu\/media\/cache\/event_grid\/media\/attachments\/2025\/01\/event_130437_original-1.png", "event_grid_2x":"https:\/\/events.umich.edu\/media\/cache\/event_grid_2x\/media\/attachments\/2025\/01\/event_130437_original-1.png", "event_feature_large":"https:\/\/events.umich.edu\/media\/cache\/event_feature_large\/media\/attachments\/2025\/01\/event_130437_original-1.png", "event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_feature_thumb\/media\/attachments\/2025\/01\/event_130437_original-1.png" }, "occurrence_count":1, "first_occurrence":21866019 } }