Who we are
Extragalactic Astrophysics is one of the most active fields of contemporary Astrophysics, comprising more than 40% of the articles published in the area. Large international projects (e.g., ALMA, James Webb Space Telescope, ELTs) have among their main objectives to understand the formation and evolution of galaxies throughout the history of the universe, while large surveys (e.g., DES, SDSS) seek to understand the structure of the universe by observing millions of galaxies in the sky.
At the Valongo Observatory we created in 2013 the extragalactic LASEX / OV research group, officially registered in the Directory of CNPq Research Groups, with the aim of formalizing a community of researchers (students, postdoctoral students and professors) aiming for joint growth. Scientifically, the focus of our group is mainly observational with some of us working a bit on modelling and simulations. We work with a great diversity of techniques and wavelengths, comprising almost the entire range of the electromagnetic spectrum from the radio, passing through microwaves, infrared and optical, reaching up to ultraviolet and X-ray
Our research projects comprise a wide range of topics in Extragalactic Astrophysics and researchers in our group lead projects in some of the most competitive observatories in the world (eg, Keck in Hawaii, VLT / ESO and ALMA in Chile ). Explore this page to know more about our group and get in touch for opportunities to collaborate!
LASEX’s Hall of fame:
Karín Menéndez-Delmestre
Thiago Signorini Gonçalves
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Professor  |
 tsg[at]astro[dot]ufrj[dot]br |
| Research area: galaxy formation and evolution; observational extragalactic astrophysics; radio astronomy; star formation. |
| Personal Page |
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Marco Grossi
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| Visiting Professor |
| grossi[at]astro[dot]ufrj[dot]br |
| Research area: galaxy properties in rich nearby clusters. |
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Arianna Cortesi
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| PostDoc |
| aricorte[at]astro[dot]ufrj[dot]br |
| Research area: formation of lenticular galaxies, the role of environment in the fomation of galaxies, extragalactic globular clusters and planetary nebulae |
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Jorge Marcelino dos Santos Júnior
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| PhD Student |
| jorgeba[at]astro[dot]ufrj[dot]br |
| Advisor: Thiago Signorini Gonçalves |
| Research area: |
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Carolyne Santos de Oliveira
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| Master Student |
| carolyne13[at]astro[dot]ufrj[dot]br |
| Advisor: Karín Menéndez-Delmestre |
| Research: |
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Yanna Carolina Martins da Silva
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| Master Student |
| yanna11[at]astro[dot]ufrj[dot]br |
| Advisor: Karín Menéndez-Delmestre |
| Research area: Extragalactic Infrared Emission, (Ultra)Luminous Infrared Galáxies, Polycyclic Aromatic Hydrocarbons (PAHs), Stellar Formation x Active Galactic Nuclei (AGNs) |
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Rayssa Guimarães
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| Undergraduate Student |
| rayssa17[at]astro[dot]ufrj[dot]br |
| Advisor: Karín Menéndez-Delmestre |
| Research area: dark matter and rotation curves of lyman-break analogs and its z~2,2 simulations./td> |
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Yasmin Cavalcante Ferreira Coelho
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| Undergraduate Student |
| yasmin14[at]astro[dot]ufrj[dot]br |
| Advisor: Karín Menéndez-Delmestre |
| Research area: Distribution of stellar mass in nearby galaxies – targeting a stellar mass census of structures typically present in galaxies (i.e., disks, bulges, bars, cores). |
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Former student/posdoc members:
Aldée Charbonnier
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| Former PostDoc |
| charbonnier[at]astro[dot]ufrj[dot]br |
| Research area: compact passive galaxies, detailed morphological analysis of galaxies, CS82 |
| LASEX Contact: Karín Menéndez-Delmestre |
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Beatriz Henriques Ferreira Ramos
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| Former PostDoc |
| birinh[at]gmail[dot]com |
| Áreas de atuação: peculiar early-type galaxies, 2D galaxy decomposition, stellar populations in galaxies. |
| LASEX Contact: Karín Menéndez-Delmestre |
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Camila de Sá Freitas
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| Master Student |
| camila14[at]astro[dot]ufrj[dot]br |
| Advisor: Thiago Signorini Gonçalves |
| Research area: Evolution of galaxies of the green valley according to morphology. Transition region: quenching or bursting? |
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Emmanuel Galliano
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| Former PostDoc |
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| Research area: |
| LASEX Contact: Karín Menéndez-Delmestre |
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Gustavo Dopcke
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| PostDoc |
| dopcke[at]astro[dot]ufrj[dot]br |
| Research area: Star Formation, Interstellar Medium, Hydrodynamic Simulations |
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João Gabriel Furtado Macedo
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| Undergraduate Student |
| joao15[at]astro[dot]ufrj[dot]br |
| Advisor: Thiago Signorini Gonçalves |
| Research area: dark matter and rotation curves of lyman-break analogs and its z~2,2 simulations. |
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João Paulo Nogueira Cavalcante
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| Former student (PhD) |
| jpncavalcante[at]on[dot]br |
| Research area: evolution of star formation in galaxies. |
| LASEX Contact: Karín Menéndez-Delmestre |
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Karolina Garcia
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| Former student (Master) |
| kgarcia[at]astro[dot]ufrj[dot]br |
| Research area: Supernovae peculiar motions for Cosmology. |
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Laurie Anne Riguccini
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| Former PostDoc |
| riguccini[at]astro[dot]ufrj[dot]br |
| Research area: infrared view of galaxies with Spitzer/Herschel, early-type galaxies, transitioning cluster galaxies, AGNs, coexistence of Star Formation and Supermassive Black Hole Growth, COSMOS collaboration |
| LASEX Contact: Paulo Lopes, Karín Menéndez-Delmestre |
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Luidhy Santana da Silva
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| PhD Student |
| luidhy[at]astro[dot]ufrj[dot]br |
| Advisor: Thiago Signorini Gonçalves |
| Research area: Research focus in the areas of Astronomy and Astrophysics with emphasis on evolution of galaxies with high star formation activity. Specially the correlation between galaxy environments and properties |
| Página Pessoal |
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Natália Nogueira Maia
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| Undergraduate Student |
| natalia12[at]astro[dot]ufrj[dot]br |
| Advisor: Thiago Signorini Gonçalves |
| Research area: |
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René Alberto Ortega Minakata
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| Former PostDoc |
| ralberto[at]astro[dot]unam[dot]mx |
| Research area: Stellar populations in galaxies, integral field unit view of ringed galaxies, CALIFA survey. |
| LASEX Contact: Thiago Signorini Gonçalves, Karín Menéndez-Delmestre |
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