Calendar

Oct
31
Wed
Galaxy Group meeting
Oct 31 @ 2:30 pm – 3:00 pm
Nov
1
Thu
Inclusive Astronomy
Nov 1 @ 4:00 pm – 5:00 pm
Nov
2
Fri
Colloquium: Kate Follette (Host: Moire Prescott)
Nov 2 @ 3:15 pm – 4:15 pm
Colloquium: Kate Follette (Host: Moire Prescott) @ BX102

How to Take Pictures of Baby Planets

Kate Follette, Amherst College

Of the thousands of known extrasolar planets, why are the dozen or so directly imaged exoplanets among the most important despite their apparently anomalous properties within the general exoplanet population (>10 astronomical units, >2x the mass of Jupiter)? What are the prospects for (and recent successes in) detecting younger, lower-mass and/or closer-in planets via direct imaging? I will discuss the current state of the art in the field of high-contrast imaging of extrasolar planets and the disks of gas and dust from which planets form (“circumstellar disks”). I will place particular emphasis on a subset of objects that host both disks and (likely) planets – the so-called “transitional disks”. These young circumstellar disks are almost certainly actively undergoing planet formation, and yet the presence of disk material complicates our ability to isolate light from planets and/or protoplanets embedded within them. I will end by discussing recent results from the Giant Accreting Protoplanet Survey (GAPplanetS) of 15 southern-hemisphere transition disks. The GAPlanetS survey aims to find protoplanets embedded in transitional disks through a distinctive signature at hydrogen wavelengths, and has so far discovered: 2-3 planets, 1 accreting M-dwarf stellar companion, and 1 disk feature masquerading as a planet.

Nov
6
Tue
Society of Astronomy Students Meeting
Nov 6 @ 4:00 pm – 5:00 pm
Nov
7
Wed
Galaxy Group meeting
Nov 7 @ 2:30 pm – 3:00 pm
Nov
8
Thu
Inclusive Astronomy
Nov 8 @ 4:00 pm – 5:00 pm
Nov
9
Fri
Colloquium: Laura Chomiuk (Host: Moire Prescott)
Nov 9 @ 3:15 pm – 4:15 pm
Colloquium: Laura Chomiuk (Host: Moire Prescott) @ BX102

Rethinking the Fundamentals of Classical Nova Explosions

Laura Chomiuk, MSU

Over the past few years, a revolution has been taking place in our understanding of classical novae, largely driven by the discovery of GeV gamma-rays emanating from these garden-variety explosions. These gamma-rays hint that shocks are energetically important—perhaps even dominant—in novae. I will present our burgeoning understanding of shocks in novae, from both multi-wavelength observational and theoretical perspectives, and illustrate how novae can be used as testbeds to understand other shock-powered explosions.

Nov
13
Tue
Society of Astronomy Students Meeting
Nov 13 @ 4:00 pm – 5:00 pm
Nov
14
Wed
Galaxy Group meeting
Nov 14 @ 2:30 pm – 3:00 pm
Nov
15
Thu
Inclusive Astronomy
Nov 15 @ 4:00 pm – 5:00 pm