[Physics-grads-open] Resume Internal Student Seminar Series (PASS)

[Pooyan Goodarzi]

Hi Physics and Astronomy students,

 We will have our next Physics and Astronomy Student Seminar *tomorrow* at *1
PM* in the *Conference Room* (PHYS 3051). In this talk Drew will talk about
his PhD research in astronomy. He will be defending his thesis soon and it
is appropriated if you can attend this talk to give him comments on his
presentation/work.


*Andrew Weldon*, *PhD Candidate*
*Friday, 1:00 pm, Conference Room (PHYS 3051)*



The Properties of Gas Flows and their Connection to z ~ 2 Star-forming
Galaxies Abstract: The physical processes that govern the evolution of
galaxies are dictated by the cycling of gas into and out of galaxies. The
incidence rate and effects of these gas flows are expected to be common and
pronounced at redshifts of z ~ 2, the peak of star-formation rate and
quasar activity in the history of the Universe. However, there are few
direct observational constraints on the properties of outflows in
individual galaxies during this epoch. Here, I combine rest-UV and
rest-optical spectroscopy to characterize the cool, low-ionized and warm,
ionized gas outflow phases from star-forming galaxies at z ~ 2. Using
Lyα emission, low-ionization (LIS) interstellar metal absorption lines, and
broad optical emission line components, I measured outflow velocities and
mass outflow rates and explored how these properties relate to the global
properties of their host galaxy. My results show that these outflow phases
are driven by different sources: the cool (warm) phase is primarily driven
by mechanical energy (momentum) injected into the interstellar medium. In
addition, the modest mass outflow rates of the warm phase suggest that it
is negligible relative to other gaseous phases. On the other hand, the
Lyα emission profile provides indirect constraints on neutral gas
kinematics and distribution. Redshifted single-peaked Lyα profiles are
ubiquitous down-the-barrel of galaxies, while farther out, the profile
varies with LIS outflow velocity and galactic properties, suggesting a
clumpy neutral gas distribution within the circumgalactic medium.This work
provides a glimpse into the complex multi-phase nature of gas cycling
around star-forming galaxies at z ~ 2.


Best,
Pooyan


On Fri, Feb 23, 2024 at 13:52 Ming-Feng Ho <mingfeng.ho at email.ucr.edu>
wrote:

> Hello Physics and Astronomy students,
>
> A group of us are in the process of organizing a weekly seminar series
> (known as PASS in the past) and would love to invite all UCR Physics and
> Astronomy graduate students and postdocs to join us. It’s a fantastic
> opportunity for you to share your research, learn from your peers, and
> practice your presentation skills in a stress-free environment. Everyone is
> welcome, both to attend and to sign up as speakers.
>
> We're in the process of scheduling these seminars at a time that works
> best for most. We'd greatly appreciate your help in determining this by *filling
> out the when2meet <https://www.when2meet.com/?23833033-4nNwu>*.
> *We're looking to kick things off next week, so keep that in mind when
> you're filling it out.*
>
> *If you’re interested in sharing your work as a speaker, please feel free
> to add your name to the spreadsheet [Google Sheet
> <https://docs.google.com/spreadsheets/d/15jECocCmSQIZSNxcJ7fcWOEQvixorkXlkUKTVN3AAVk/edit?usp=sharing>].*
> We’re looking forward to creating a dynamic and engaging series with your
> involvement!
>
> Best,
> Ming-Feng
> Physics and Astronomy Student Seminar (PASS)
>
> ---
> Ming-Feng Ho
> PhD Candidate
> Physics and Astronomy
> University of California, Riverside
> jibancat.github.io
>
>
>
> _______________________________________________
> Physics-grads-open mailing list
> Physics-grads-open at lists.ucr.edu
> https://lists.ucr.edu/mailman/listinfo/physics-grads-open
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.ucr.edu/pipermail/physics-grads-open/attachments/20240509/c1276374/attachment.html>