Event Calendar

https://docs.google.com/document/d/17PUIu7B15t-bBIfzL6dTvLiqlI95G8Pn7ao2DENFTnY/edit Location: https://dunlap.zoom.us/j/7109183228

https://utoronto.zoom.us/j/8751068360 Location: AB lounge

Weekly group meeting on gravitational waves, compact objects and strong gravity. Contact plandry@cita.utoronto.ca to get on the mailing list and for remote connection info. Location: MP 15th floor meeting room

Location: AB lounge

Speaker: Prof. Maxwell Moe, University of Wyoming

Prof. Moe will be visiting us virtually from University of Wyoming. We will still have a group viewing in AB107 (Cody Hall).

Title: Solving Two 30-year Mysteries in the Formation and Dynamical Evolution of Binary Stars

Abstract: Most stars are born in binary and multiple systems. Nearly all very close binaries with orbital periods P < 5 days are in triples, initially suggesting that the tertiary companion played a role in the dynamical hardening of the inner binary. However, several properties of these hierarchical triples are inconsistent with dynamical models. I will share how recent observations coupled to population synthesis models resolve this apparent discrepancy. The second mystery involves binaries across intermediate separations a = 10 - 100 AU. Early adaptive optics surveys discovered a substantial excess of these binaries in low-density star-forming regions like Taurus and Upper Scorpius compared to the galactic field population. Field stars represent an ensemble average of different star-forming environments, and thus it was predicted that dense star-forming regions must preferentially disrupt intermediate-period binaries in order to compensate for the observed excess in low-density environments. However, recent observations have shown that even the dense Orion Nebula Cluster manifests a similar or even larger binary fraction across intermediate separations compared to the field. I will demonstrate how an overlooked selection bias fundamentally alters the inferred primordial binary period distribution, yielding significant implications for star formation and the initial mass function.

https://utoronto.zoom.us/j/88922379182 Location: https://utoronto.zoom.us/j/88922379182

More info here: https://docs.google.com/spreadsheets/d/16k-tnWyJNt44c999Kvw5TV0t43DGZxIUMQUq4pywL_Y/edit?usp=sharing Location: https://dunlap.zoom.us/j/95101467070

https://docs.google.com/document/d/17PUIu7B15t-bBIfzL6dTvLiqlI95G8Pn7ao2DENFTnY/edit Location: https://dunlap.zoom.us/j/7109183228

https://utoronto.zoom.us/j/8751068360 Location: AB lounge

Weekly group meeting on gravitational waves, compact objects and strong gravity. Contact plandry@cita.utoronto.ca to get on the mailing list and for remote connection info. Location: MP 15th floor meeting room

Location: Faculty Club - University Of Toronto, 41 Willcocks St, Toronto, ON M5S 3G3, Canada

Location: AB lounge

https://utoronto.zoom.us/j/84177391105

https://utoronto.zoom.us/j/88922379182 Location: https://utoronto.zoom.us/j/88922379182

Location: Physics Lounge, Room 110, 60 St. George St.

https://docs.google.com/document/d/17PUIu7B15t-bBIfzL6dTvLiqlI95G8Pn7ao2DENFTnY/edit Location: https://dunlap.zoom.us/j/7109183228

https://utoronto.zoom.us/j/8751068360 Location: AB lounge

Weekly group meeting on gravitational waves, compact objects and strong gravity. Contact plandry@cita.utoronto.ca to get on the mailing list and for remote connection info. Location: MP 15th floor meeting room

Location: AB lounge

https://utoronto.zoom.us/j/88922379182 Location: https://utoronto.zoom.us/j/88922379182

More info here: https://docs.google.com/spreadsheets/d/16k-tnWyJNt44c999Kvw5TV0t43DGZxIUMQUq4pywL_Y/edit?usp=sharing Location: https://dunlap.zoom.us/j/95101467070

https://docs.google.com/document/d/17PUIu7B15t-bBIfzL6dTvLiqlI95G8Pn7ao2DENFTnY/edit Location: https://dunlap.zoom.us/j/7109183228

https://utoronto.zoom.us/j/8751068360 Location: AB lounge

Weekly group meeting on gravitational waves, compact objects and strong gravity. Contact plandry@cita.utoronto.ca to get on the mailing list and for remote connection info. Location: MP 15th floor meeting room

Location: AB lounge

https://utoronto.zoom.us/j/84177391105

https://utoronto.zoom.us/j/88922379182 Location: https://utoronto.zoom.us/j/88922379182