Coloquio IRyA esta semana/This week's colloquium at IRyA

[Sundar Srinivasan]

Hola (English version below),

Este jueves 7 de mayo a las 12:00, Vidhi Tailor de la Universidad de Bolonia impartirá la plática:

"Understanding dust in galaxies: Heating and Scaling Relations"

Resumen:While represnting only a minor fraction of the interstellar medium (ISM) mass, interstellar dust significantly affects the thermal, chemical, and radiative processes that govern galaxy evolution. By mediating gas cooling, enabling molecule formation, and absorbing and re-emitting stellar radiation in far-infrared and Sub-mm regimes, dust serves as an essential tracer of the physical conditions, offering insights into the interplay of stars, dust and the ISM. With the help of multi-wavelength observations, it is possible to study the different components of the ISM and their relations in a spatially resolved manner across nearby galaxies, on scales of few hundreds to kiloparsecs. In this talk, I present a spatially resolved analysis of dust in spiral galaxies, focusing on two complemetary aspects: dust heating and dust scaling relations. I will show that both young and evolved stellar popluations contribute to dust heating, and examine how dust content related to the gas and metals in the ISM through dust-to-gas and dust-to-metal ratios. These results provide a more complete picture of how dust properties are shaped by both stellar radiation and ISM conditions.

Zoom link (Meeting ID: 830 0222 1733 Passcode: c0l0#Fqu1)

Les pedimos que por favor:
1. Intenten conectarse ~10 minutos antes del mediodía, en caso de que haya algún problema.
2. Apaguen sus micrófonos y cámaras durante la presentación. Si estarán en el auditorio, apaguen sus celulares.
3. Reserven sus preguntas hasta el final de la presentación. Usen el botón "Raise Hand" en Zoom para hacer una pregunta, y el moderador tomará nota.
4. Mantengan abierta la ventana de chat de Zoom durante la sesión para que puedan recibir mensajes de los organizadores.

El café y las galletas estarán disponibles 15 min antes del coloquio. Traiga sus propias tazas y no traiga bebidas ni alimentos al auditorio.

Las diapositivas de la charla, así como el video, estarán disponibles en la página web del coloquio IRyA. Los videos también se pueden encontrar en nuestro canal de YouTube.

Saludos.

************************************************************************

Hi everyone,

On Thursday, the 7th of May at 12:00, Vidhi Tailor of the University of Bologna will present the following talk:

"Understanding dust in galaxies: Heating and Scaling Relations"

Abstract:

While represnting only a minor fraction of the interstellar medium (ISM) mass, interstellar dust significantly affects the thermal, chemical, and radiative processes that govern galaxy evolution. By mediating gas cooling, enabling molecule formation, and absorbing and re-emitting stellar radiation in far-infrared and Sub-mm regimes, dust serves as an essential tracer of the physical conditions, offering insights into the interplay of stars, dust and the ISM. With the help of multi-wavelength observations, it is possible to study the different components of the ISM and their relations in a spatially resolved manner across nearby galaxies, on scales of few hundreds to kiloparsecs. In this talk, I present a spatially resolved analysis of dust in spiral galaxies, focusing on two complemetary aspects: dust heating and dust scaling relations. I will show that both young and evolved stellar popluations contribute to dust heating, and examine how dust content related to the gas and metals in the ISM through dust-to-gas and dust-to-metal ratios. These results provide a more complete picture of how dust properties are shaped by both stellar radiation and ISM conditions.

Zoom link (Meeting ID: 830 0222 1733 Passcode: c0l0#Fqu1)

We request that you please:
1. Attempt to connect ~10 min before noon, in case there are any issues.
2. Turn off your mics and cameras during the presentation. If you'll be in the auditorium, please turn off your cellphones.
3. Reserve your questions till the end of the presentation. Use the "Raise Hand" button in Zoom to ask a question, and the moderator(s) will make a note.
4. Have your Zoom chat window open during the session so you are able to receive messages from the moderator(s).

Coffee and cookies will be available 15 min prior to the colloquium. Please bring your own mugs, and please do not bring beverages or food into the auditorium.

Slides from the talk, as well as the video, will be available on the IRyA colloquium webpage. The videos can also be found on our YouTube channel.

Cheers,

Ramandeep y Sundar

[Sundar Srinivasan]

Hola (English version below),

Este jueves 14 de mayo a las 12:00, Yenifer Angarita del Chalmers University of Technology impartirá la plática:

"Galactic magnetic field tomography using starlight polarization observations"

Resumen:

Polarization tomography is a valuable method for investigating the structure of magnetic fields in the interstellar medium. Starlight becomes linearly polarized as it passes through elongated dust grains aligned by interstellar magnetic fields. By combining polarization measurements with stellar distances, we can disentangle contributions from multiple intervening structures and reconstruct the plane-of-sky magnetic field at different depths along the line of sight. In this work, statistical decomposition techniques are applied to multi-band polarization data to identify distinct polarizing components associated with separate dust layers. The results demonstrate that polarization tomography can successfully isolate nearby and distant magnetic field contributions and reveal variations in field properties across large-scale structures.

Zoom link (Meeting ID: 830 0222 1733 Passcode: c0l0#Fqu1)

Les pedimos que por favor:
1. Intenten conectarse ~10 minutos antes del mediodía, en caso de que haya algún problema.
2. Apaguen sus micrófonos y cámaras durante la presentación. Si estarán en el auditorio, apaguen sus celulares.
3. Reserven sus preguntas hasta el final de la presentación. Usen el botón "Raise Hand" en Zoom para hacer una pregunta, y el moderador tomará nota.
4. Mantengan abierta la ventana de chat de Zoom durante la sesión para que puedan recibir mensajes de los organizadores.

El café y las galletas estarán disponibles 15 min antes del coloquio. Traiga sus propias tazas y no traiga bebidas ni alimentos al auditorio.

Las diapositivas de la charla, así como el video, estarán disponibles en la página web del coloquio IRyA. Los videos también se pueden encontrar en nuestro canal de YouTube.

Saludos.

************************************************************************

Hi everyone,

On Thursday, the 14th of May at 12:00, Yenifer Angarita of the Chalmers University of Technology will present the following talk:

"Galactic magnetic field tomography using starlight polarization observations"

Abstract:

Polarization tomography is a valuable method for investigating the structure of magnetic fields in the interstellar medium. Starlight becomes linearly polarized as it passes through elongated dust grains aligned by interstellar magnetic fields. By combining polarization measurements with stellar distances, we can disentangle contributions from multiple intervening structures and reconstruct the plane-of-sky magnetic field at different depths along the line of sight. In this work, statistical decomposition techniques are applied to multi-band polarization data to identify distinct polarizing components associated with separate dust layers. The results demonstrate that polarization tomography can successfully isolate nearby and distant magnetic field contributions and reveal variations in field properties across large-scale structures.