Graduate Program in Physics at UFSC, Florianópolis

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O Programa de Pós-Graduação em Física convida para o colóquio:

“Mapping the shutting down of star formation from the local universe to the first galaxies”*

Dr Hin Leung, Royal Observatory of Edinburgh, UK

*Evento de presença obrigatória da disciplina seminários

Resumo:
From large galaxy surveys in the local universe, we find galaxies that are star-forming and galaxies that have mostly stopped forming stars. Those that are no longer forming stars must have at some point quenched their ongoing star formation and evolved passively to achieve the current “red and dead” state. However, the precise physical drivers of this quenching process are still highly debated.

In this talk, I will show results from studying recently quenched galaxies in the local universe. We found that a majority of these galaxies became significantly more metal-rich over a short period, indicating that whatever led to their quenching must also inflate their metal abundance without significant dilution from inflowing metal-poor gas. From looking at spatially resolved information collected in spectroscopic surveys, and applying a novel Hierarchical Bayesian modelling approach to include radial gradients of regional properties, we found evidence that their recent quenching could be caused by mergers with neighbouring galaxies.

Moving to more distant galaxies, from a sample of 14 massive quenched galaxies observed by JWST within 2 billion years after the Big Bang, we found strong evidence for “downsizing” to already be in place at early times. This means more massive galaxies formed earlier than less massive galaxies. Some of these most massive cases might be “cosmology-breaking”, where they are more massive than what a galaxy could reach in the same time predicted by lambda CDM, even with 100% baryonic assembly efficiency. From a broad search for all early and massive quenched galaxies, we report that almost all current cosmological simulations are under-predicting the number densities of these objects by ~2x. These suggest that substantial revisions to our models of early galaxy formation and quenching are needed.

Data: 10 de abril de 2026 (sexta-feira) – Horário: 10h15min
Link de acesso a sala virtual: https://conferenciaweb.rnp.br/ufsc/ppgfsc

Participants of the 1st KMOS VVVX–GalCen Spectroscopic Survey Workshop, held in December 2025 at the Institute of Astrophysics of Universidad Andrés Bello (Chile). The meeting brought together the scientific team involved in the VVV/VVVX surveys and in planning the new spectroscopic survey with the KMOS instrument at the Very Large Telescope (VLT). Credit: Dante Minniti

Astronomers began this week the first observations of a new large international survey called KMOS VVVX-GalCen Spectroscopic Survey, which will investigate tens of thousands of objects in the central region of the Milky Way. The project includes the participation of researcher Roberto K. Saito, professor at the Department of Physics at the Federal University of Santa Catarina (UFSC), the only Brazilian institution present in the main survey team.

The observations are carried out at the Very Large Telescope (VLT), one of the most advanced optical observatories in the world, located at the Cerro Paranal Observatory in the Atacama Desert, northern Chile. The telescope is operated by the European Southern Observatory (ESO).

The KMOS VVVX-GalCen is the first major spectroscopic survey led from Chile, and it was selected by ESO as one of only two large programs that will use the KMOS (K-band Multi Object Spectrograph) instrument over the next three years. In total, the project received 140 nights of observation, which corresponds to a scientific investment estimated at about 8 million dollars in telescope time.

The project is led by astronomers Matías Gómez, from Universidad Andrés Bello (Chile), and Francisco Nogueras-Lara, from the Institute of Astrophysics of Andalucía (Spain). Saito is part of the central group of researchers in the survey and is responsible for one of the scientific areas of the project.

“The first night of observations at Paranal was monitored remotely and went smoothly. Now begins the stage of analyzing the first spectra,” explains the researcher.

The observed targets were selected from two previous highly successful surveys: the VVV/VVVX, which mapped much of the Milky Way in infrared light over the past decade, and GALACTICNUCLEUS, a high-resolution survey of the innermost regions of our galaxy. The new survey will obtain spectra, a technique that allows decomposing the light of celestial objects and revealing properties such as chemical composition, temperature, and velocity.

Among the main scientific objectives are the study of rogue planets that wander freely through space, star clusters hidden by galactic dust, star-forming regions, and distant galaxies concealed behind the plane of the Milky Way. In the future, the survey is also expected to include spectroscopic observations of objects identified by the Legacy Survey of Space and Time (LSST), expanding the scientific possibilities of the project.

Learn more on the project website.

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Evento aberto à toda a comunidade da UFSC

Aula magna 2026
Ciclo de seminários do programa de pós-graduação em Física da UFSC
Data e horário: 13/03/2026 às 10h15
Local: Auditório da Física (FSC 212)

Por que falar sobre Ciência Aberta para a comunidade da Física
Débora Peres Menezes
Diretora de Avaliação de Resultados e Soluções Digitais – CNPq
Profª. Titular – Depto de Física – Universidade Federal de Santa Catarina

A Ciência Aberta tem ganhado destaque como um modelo promissor para democratizar o acesso ao conhecimento científico e fomentar a inovação. No entanto, sua aplicação no Brasil requer uma análise criteriosa das condições de trabalho dos pesquisadores, dos custos associados à sua implementação e da necessidade de regulamentação em âmbito federal. Infelizmente, parte da discussão correu à revelia da comunidade científica nos últimos anos, tendo se concentrado nos órgãos de fomento, órgãos de controle e áreas específicas. Pretendo abordar os seguintes pontos:

• A importância da Ciência Aberta como uma iniciativa global e sua relevância para o Brasil;
• As condições estruturais e financeiras que impactam os pesquisadores no país, em especial, os físicos;
• O papel da regulamentação federal na garantia de sua aplicação responsável e eficiente;
• Os desafios da Economia do Conhecimento que envolve o colonialismo de dados, com destaque para os possíveis impactos na soberania nacional relacionados à ampla disponibilização de dados obtidos em pesquisas feitas com financiamento público.

Estará aberto, no período de 16 de fevereiro a 24 de março de 2026, o prazo para inscrições no Exame Unificado de Física (EUF) 2026-1. As inscrições deverão ser realizadas pela internet, por meio do site oficial do exame:

👉 https://euf.ifi.unicamp.br/EUF/listarevento.aspx?12026EUF

A prova será aplicada no dia 15 de abril de 2026 e poderá ser realizada no Departamento de Física da Universidade Federal de Santa Catarina (UFSC), em Florianópolis, bem como em diversas outras localidades no Brasil e no exterior.

O Programa de Pós-Graduação em Física da UFSC (Florianópolis) utiliza, entre outros critérios de seleção, as notas do Exame Unificado das Pós-Graduações em Física (EUF) para o ingresso nos cursos de mestrado e doutorado. A nota obtida no exame constitui parte importante do processo de classificação dos candidatos.

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Entre os dias 24 e 27 de fevereiro de 2026, acontecerá em Florianópolis, no campus central da UFSC (auditório do EFI), o XII Encontro de Física e Astronomia. O evento terá inscrição gratuita e reunirá pesquisadores, estudantes e interessados para uma semana de intensa troca científica.

A programação do evento inclui palestras com especialistas, minicursos técnicos em diversas áreas da física e da astronomia, além de sessões de pôsteres e seminários. Participantes interessados em apresentar trabalhos podem submeter seus resumos até 11 de fevereiro de 2026.

Mais informações, inscrições e programação completa estão disponíveis no site oficial do evento:
👉 https://encontro-pgfsc.ufsc.br/2026

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Informamos que, em razão do recesso para as comemorações de fim de ano (Natal e Ano Novo), não haverá expediente na secretaria do PPGFSC nos seguintes períodos:

• 22/12 a 29/12
• 31/12 e 01/01/2026

As atividades do dia 02/01 acontecerão  em regime de teletrabalho.

O atendimento presencial retornará no dia 05/12 das 07h às 13h.

Agradecemos a compreensão e desejamos a todos boas festas! 🎄✨

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☀️Horário de Verão na UFSC ☀️

De 15 de dezembro de 2025 a 06 de março de 2026, a UFSC funciona em horário de verão. Nesse período, o expediente de servidores docentes e técnico-administrativos ocorre no turno matutino, das 7h às 13h, conforme determinado pela Portaria Normativa 525/2025/GR.

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Divulgamos o resultado final da 2ª Chamada do Programa de Doutorado Sanduíche no Exterior (PDSE/CAPES) para o ano de 2026 (início 2º semestre).

Resultado final

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Divulgamos o resultado preliminar da 2ª Chamada do Programa de Doutorado Sanduíche no Exterior (PDSE/CAPES) para o ano de 2026 (início 2º semestre).

Prazo para apresentação de recursos do resultado preliminar:  03 até 05 de dezembro de 2025 (o link do formulário de recurso está no edital).

Resultado preliminar

PPGFSC is offering master’s, PhD and Post-doc scholarships linked to specific projects by Prof. Nara Rubiano da Silva (Quantum Optics) and Prof. Maurício Girardi-Schappo (Statistical Mechanics).

This opportunity is mainly for those who took the last selection exam and are currently without a scholarship. However, students who are just starting the program and have not yet been awarded a scholarship nor defined an advisor can also take advantage of the opportunity (in this case, the duration of the scholarship cannot exceed the course completion deadline plus the maximum extension).

For more information, contact one of the two professors below directly.

Master’s Scholarship for Women – Quantum Optics Laboratory (Prof. Nara Rubiano da Silva)

The Quantum Optics Laboratory at UFSC conducts research in the field of optical information processing, an innovative approach that seeks to solve fundamental computing problems – such as matrix products – using optical systems instead of electronic ones. This research line opens perspectives for performing calculations more efficiently and for developing neural networks based on optical platforms.

We are offering a master’s scholarship for women, with possible work in three complementary areas:

• Experimental: direct participation in the optical table, assembling and characterizing experiments;
• Simulations: development of computational models to study and optimize the efficiency of optical systems;
• Control and automation: creation and implementation of computational strategies for equipment control and operation.

Interested candidates are invited to contact Prof. Nara Rubiano da Silva (📧 ) for more information and to discuss possible research topics, combining experimental and theoretical aspects according to the candidate’s profile.

Doctoral and Postdoctoral Scholarships — NeuroPhysics Laboratory (Prof. Maurício Girardi-Schappo)

The NeuroPhysics Laboratory is part of the INCT of Neural Computing, a national and international collaboration network among Brazilian and foreign universities. Our goal is to understand and model the physical principles that govern information processing in the brain and in artificial neural networks.

We investigate topics such as stimulus sensitivity, memory formation, brain rhythms, and mechanisms associated with neurological diseases, such as epilepsy. We use techniques such as stochastic processes, out-of-equilibrium phase transitions, and nonlinear dynamics.

Fellows may work in at least two of the following areas:

• Theory and simulation of neural networks;
• Data-driven modeling: use of real clinical data from epilepsy patients;
• Mouse-robot: construction and programming of a robot to emulate spatial memory tasks;
• Experimental data analysis: in collaboration with groups from the University of Ottawa and PPGNeuro-UFSC.

There are two doctoral scholarships and ten postdoctoral scholarships available. Application period: December 1, 2025 to January 31, 2026 with Professor Maurício.

The selection will be conducted through an INCT selection process. The only prerequisite to apply for the doctoral scholarship is to have been accepted into the graduate program. To apply for the postdoctoral scholarships, the candidate must hold a doctoral degree and may apply for Junior (PDJ) or Senior (PDS) scholarships, depending on their profile

More information: Prof. Maurício Girardi-Schappo
🌐 neurophysicslab.com
📧