Speaker: Jamie Tayar (University of Florida)

Contact Information: jtayar@ufl.edu

Title:  How well can we estimate stellar ages?

Abstract: Good estimations of stellar ages are important for a wide range of science cases, from understanding the evolution and habitability of exoplanetary systems to tracking back the cosmic history of our own and other galaxies. These ages, however, are not directly measured, but rather inferred from theoretical models or empirical calibrations using a variety of techniques. I will discuss the current precision and accuracy of isochrone-based, rotation-based, and asteroseismically inferred ages, as well as some of the current challenges of each method. Finally, I will discuss some of the recent and ongoing work in my group to increase the number of stars with well-measured ages, as well as some of the interesting stellar physics puzzles we've run into along the way. 

Visitor's room: 127

Visit Schedule:

Tuesday (April 2, 2024):

• 9:30 a.m.:

• 10:00 a.m:  Yubo Su

• 10:30 a.m.: 

• 11:00 a.m.: Colloquium 

• 11:30 a.m.: Colloquium 

• 12:00 p.m.: Bahcall lunch

• 12:30 p.m.: Bahcall lunch

• 1:00 p.m.: Bahcall lunch

• 1:30 p.m.:  Yubo Su

• 2:00 p.m.: Dorottya Szécsi (

• 2:30 p.m.:  Philipp Kempski

• 3:00 p.m.: Tea Time with Grad Students in Grand Central 

• 3:30 p.m.: Tea Time with Grad Students in Grand Central 

• 4:00 p.m.: 

• 4:30 p.m.: 

• 5:00 p.m.: 

Dinner Sign-up - add your name here:

Tuesday (April 2, 2024) (La Mezzaluna, meet at 6:10 in Peyton Lobby)

1. Faculty Host:  Neta Bahcall

2. Postdoc Host: Yubo Su

3. Ronan Hix

4. Rajsekhar Mohapatra

5. Jeff Shen

6. Shaunak Modak

7. Ankan Sur

8. Jamie Tayar

STUDENTS HAVE PRIORITY.

PLEASE NO MORE THAN 8 PEOPLE (it is more difficult to properly interact with the speaker in larger groups).