Nous sommes heureux d'annoncer la publication de notre étude évaluée par les pairs dans l'Open European Journal on Variable Stars (OEJV) concernant le nouvel exoplanète Gliese 48 b, un monde qui remet en question notre compréhension actuelle des systèmes planétaires autour des naines rouges.

Ce travail est le fruit d'une collaboration entre Silvio Antonio Corrêa Jr. (Brésil), Giuseppe Conzo et Mara Moriconi (Gruppo Astrofili Palidoro, Italie).

Pourquoi Gliese 48 b est-elle si particulière ?

🪐 Massive et tempérée : Avec une masse minimale d'environ 8 masses terrestres, Gliese 48 b se situe dans la zone habitable de son étoile, où les conditions thermiques pourraient permettre la présence d'eau liquide.

🔬 Un véritable défi astrophysique : La détection de cette planète a été particulièrement complexe en raison de la forte activité magnétique de son étoile hôte, qui produit des signaux parasites imitant très fidèlement ceux d'une planète.

📊 Une analyse scientifique rigoureuse : En combinant 15 années de données spectroscopiques provenant des instruments CARMENES et HIRES, ainsi que des observations photométriques du télescope spatial TESS, nous avons réussi à isoler le signal planétaire et à confirmer sa nature avec une grande précision.

Comme l'illustre l'image représentative, il s'agit d'un monde plus grand que la Terre, dont la composition reste encore à explorer.

📄 Article scientifique en accès libre :
https://oejv.physics.muni.cz/issues/oejv_0273.pdf

Tenho o prazer de anunciar a publicação do nosso estudo revisado por pares no *Open European Journal on Variable Stars* (OEJV) sobre o novo exoplaneta **#Gliese48b** – um mundo que desafia nossa compreensão atual dos sistemas ao redor de anãs vermelhas.

Este trabalho é resultado de uma colaboração sinérgica entre mim (Silvio Antonio Corrêa Jr., do Brasil), Giuseppe Conzo e Mara Moriconi (do Gruppo Astrofili Palidoro, Itália).

O que torna esta super-Terra tão única:

* **Massiva e temperada:** Com uma massa mínima de cerca de 6,2 massas terrestres, Gliese 48 b está localizada na zona habitável, onde as condições térmicas poderiam permitir a existência de água líquida.

Este trabalho é resultado de uma colaboração sinérgica entre mim (Silvio Antonio Corrêa Jr., do Brasil), Giuseppe Conzo e Mara Moriconi (do Gruppo Astrofili Palidoro, Itália).

O que torna esta super-Terra tão única:

* **Massiva e temperada:** Com uma massa mínima de cerca de 6,2 massas terrestres, Gliese 48 b está localizada na zona habitável, onde as condições térmicas poderiam permitir a existência de água líquida. * **Um desafio astrofísico superado:** Identificar este planeta foi extremamente complexo devido à intensa atividade magnética de sua estrela hospedeira, que gera sinais falsos (oscilação estelar) enganosamente semelhantes a sinais planetários.

**Rigor científico:** Graças a uma análise combinada de 15 anos de dados espectroscópicos (instrumentos CARMENES e HIRES) e fotometria (telescópio espacial TESS), conseguimos isolar o sinal planetário e confirmar sua natureza dinâmica com alta precisão.

Como mostra a imagem representativa, este é um mundo maior que a Terra, e sua composição exata ainda precisa ser explorada.

# Links Oficiais:

* **Leia o artigo científico completo no OEJV:**[ https://oejv.physics.muni.cz/issues/oejv\\\_0273.pdf ](https://oejv.physics.muni.cz/issues/oejv\_0273.pdf)

Excited to announce the publication of our peer-reviewed study in the Open European Journal on Variable Stars (OEJV) regarding the new exoplanet #Gliese48b, a world that challenges our current understanding of systems around red dwarfs.

This work was the result of a synergistic collaboration between myself (Silvio Antonio Corrêa Jr., from Brazil), Giuseppe Conzo, and Mara Moriconi (from Gruppo Astrofili Palidoro, Italy).

Here is what makes this Super-Earth unique:

• Massive and temperate: With a minimum mass of about 6.2 Earth masses, Gliese 48 b is located within the Habitable Zone, where thermal conditions could allow for the existence of liquid water.
• An astrophysical challenge overcome: Identifying this planet was extremely complex due to the intense magnetic activity of the host star, which creates false signals (stellar jitter) closely mimicking planetary ones.
• Scientific rigor: Thanks to a combined analysis of 15 years of spectroscopic data (CARMENES and HIRES instruments) and photometry (TESS space telescope), we isolated the planetary signal, confirming its dynamic nature with high precision.

As the representative image shows, this is a world larger than Earth, whose composition remains to be explored.

Official Links:

• Read the full scientific paper in the OEJV:https://oejv.physics.muni.cz/issues/oejv_0273.pdf

Excited to announce the publication of our peer-reviewed study in the Open European Journal on Variable Stars (OEJV) regarding the new exoplanet #Gliese48b, a world that challenges our current understanding of systems around red dwarfs.

This work was the result of a synergistic collaboration between myself (Silvio Antonio Corrêa Jr., from Brazil), Giuseppe Conzo, and Mara Moriconi (from Gruppo Astrofili Palidoro, Italy).

Here is what makes this Super-Earth unique:

• Massive and temperate: With a minimum mass of about 6.2 Earth masses, Gliese 48 b is located within the Habitable Zone, where thermal conditions could allow for the existence of liquid water.
• An astrophysical challenge overcome: Identifying this planet was extremely complex due to the intense magnetic activity of the host star, which creates false signals (stellar jitter) closely mimicking planetary ones.
• Scientific rigor: Thanks to a combined analysis of 15 years of spectroscopic data (CARMENES and HIRES instruments) and photometry (TESS space telescope), we isolated the planetary signal, confirming its dynamic nature with high precision.

As the representative image shows, this is a world larger than Earth, whose composition remains to be explored.

Official Links:

• Read the full scientific paper in the OEJV:https://oejv.physics.muni.cz/issues/oejv_0273.pdf

Excited to announce the publication of our peer-reviewed study in the Open European Journal on Variable Stars (OEJV) regarding the new exoplanet #Gliese48b, a world that challenges our current understanding of systems around red dwarfs.

This work was the result of a synergistic collaboration between myself (Silvio Antonio Corrêa Jr., from Brazil), Giuseppe Conzo, and Mara Moriconi (from Gruppo Astrofili Palidoro, Italy).

Here is what makes this Super-Earth unique:

• Massive and temperate: With a minimum mass of about 6.2 Earth masses, Gliese 48 b is located within the Habitable Zone, where thermal conditions could allow for the existence of liquid water.
• An astrophysical challenge overcome: Identifying this planet was extremely complex due to the intense magnetic activity of the host star, which creates false signals (stellar jitter) closely mimicking planetary ones.
• Scientific rigor: Thanks to a combined analysis of 15 years of spectroscopic data (CARMENES and HIRES instruments) and photometry (TESS space telescope), we isolated the planetary signal, confirming its dynamic nature with high precision.

As the representative image shows, this is a world larger than Earth, whose composition remains to be explored.

Official Links:

• Read the full scientific paper in the OEJV:https://oejv.physics.muni.cz/issues/oejv_0273.pdf

Excited to announce the publication of our peer-reviewed study in the Open European Journal on Variable Stars (OEJV) regarding the new exoplanet #Gliese48b, a world that challenges our current understanding of systems around red dwarfs.

This work was the result of a synergistic collaboration between myself (Silvio Antonio Corrêa Jr., from Brazil), Giuseppe Conzo, and Mara Moriconi (from Gruppo Astrofili Palidoro, Italy).

Here is what makes this Super-Earth unique:

• Massive and temperate: With a minimum mass of about 6.2 Earth masses, Gliese 48 b is located within the Habitable Zone, where thermal conditions could allow for the existence of liquid water.
• An astrophysical challenge overcome: Identifying this planet was extremely complex due to the intense magnetic activity of the host star, which creates false signals (stellar jitter) closely mimicking planetary ones.
• Scientific rigor: Thanks to a combined analysis of 15 years of spectroscopic data (CARMENES and HIRES instruments) and photometry (TESS space telescope), we isolated the planetary signal, confirming its dynamic nature with high precision.

As the representative image shows, this is a world larger than Earth, whose composition remains to be explored.

Official Links:

• Read the full scientific paper in the OEJV:https://oejv.physics.muni.cz/issues/oejv_0273.pdf

Excited to announce the publication of our peer-reviewed study in the Open European Journal on Variable Stars (OEJV) regarding the new exoplanet #Gliese48b, a world that challenges our current understanding of systems around red dwarfs.

This work was the result of a synergistic collaboration between myself (Silvio Antonio Corrêa Jr., from Brazil), Giuseppe Conzo, and Mara Moriconi (from Gruppo Astrofili Palidoro, Italy).

Here is what makes this Super-Earth unique:

• Massive and temperate: With a minimum mass of about 6.2 Earth masses, Gliese 48 b is located within the Habitable Zone, where thermal conditions could allow for the existence of liquid water.
• An astrophysical challenge overcome: Identifying this planet was extremely complex due to the intense magnetic activity of the host star, which creates false signals (stellar jitter) closely mimicking planetary ones.
• Scientific rigor: Thanks to a combined analysis of 15 years of spectroscopic data (CARMENES and HIRES instruments) and photometry (TESS space telescope), we isolated the planetary signal, confirming its dynamic nature with high precision.

As the representative image shows, this is a world larger than Earth, whose composition remains to be explored.

Official Links:

• Read the full scientific paper in the OEJV:https://oejv.physics.muni.cz/issues/oejv_0273.pdf

Ich freue mich, die Veröffentlichung unserer Peer-Review-Studie im Open European Journal on Variable Stars (OEJV) über den neuen Exoplaneten #Gliese48b bekannt zu geben – eine Welt, die unser bisheriges Verständnis von Systemen um Rote Zwerge herausfordert.

Diese Arbeit ist das Ergebnis einer synergetischen Zusammenarbeit zwischen mir (Silvio Antonio Corrêa Jr., aus Brasilien), Giuseppe Conzo und Mara Moriconi (vom Gruppo Astrofili Palidoro, Italien).

Was diese Supererde so einzigartig macht:

• Massereich und gemäßigt: Mit einer Mindestmasse von etwa 6,2 Erdmaßen befindet sich Gliese 48 b innerhalb der habitablen Zone, wo die thermischen Bedingungen die Existenz von flüssigem Wasser ermöglichen könnten.
• Eine astrophysikalische Herausforderung gemeistert: Die Identifizierung dieses Planeten war aufgrund der intensiven magnetischen Aktivität des Heimatsterns extrem komplex, da diese falsche Signale (Stellar Jitter) erzeugt, die planetaren Signalen täuschend ähnlich sehen.
• Wissenschaftliche Strenge: Dank einer kombinierten Analyse von 15 Jahren spektroskopischer Daten (Instrumente CARMENES und HIRES) und Fotometrie (TESS-Weltraumteleskop) konnten wir das planetare Signal isolieren und seine dynamische Natur mit hoher Präzision bestätigen.

Wie das repräsentative Bild zeigt, handelt es sich um eine Welt, die größer als die Erde ist und deren genaue Zusammensetzung noch erforscht werden muss.

Offizielle Links:

• Lesen Sie die vollständige wissenschaftliche Arbeit im OEJV:https://oejv.physics.muni.cz/issues/oejv_0273.pdf

Excited to announce the publication of our peer-reviewed study in the Open European Journal on Variable Stars (OEJV) regarding the new exoplanet Gliese48b, a world that challenges our current understanding of systems around red dwarfs.

This work was the result of a synergistic collaboration between myself (Silvio Antonio Corrêa Jr., from Brazil), Giuseppe Conzo, and Mara Moriconi (from Gruppo Astrofili Palidoro, Italy).

Here is what makes this Super-Earth unique:

• Massive and temperate: With a minimum mass of about 6.2 Earth masses, Gliese 48 b is located within the Habitable Zone, where thermal conditions could allow for the existence of liquid water.
• An astrophysical challenge overcome: Identifying this planet was extremely complex due to the intense magnetic activity of the host star, which creates false signals (stellar jitter) closely mimicking planetary ones.
• Scientific rigor: Thanks to a combined analysis of 15 years of spectroscopic data (CARMENES and HIRES instruments) and photometry (TESS space telescope), we isolated the planetary signal, confirming its dynamic nature with high precision.

As the representative image shows, this is a world larger than Earth, whose composition remains to be explored.

https://preview.redd.it/wqh59q9psu9h1.png?width=2560&format=png&auto=webp&s=b31cb2fc91b3644800f17dc8e811ad928b21d75e

Official Links:

• Read the full scientific paper in the OEJV:https://oejv.physics.muni.cz/issues/oejv_0273.pdf

Our paper on the possible detection and characterization of Ross 318 b — a temperate Super-Earth around an active M-dwarf — has just been published on arXiv.

The work combines CARMENES + HIRES radial velocity data with TESS photometry over a ~15-year baseline to investigate the planetary signal and disentangle it from stellar activity.

I was invited by Giuseppe Conzo and the Gruppo Astrofili Palidoro (Italy) to participate in the project, contributing mainly to the TESS analysis, statistical validation, and habitability calculations.

Paper:
https://arxiv.org/abs/2605.11123

Would love to hear feedback from the community and discuss possible follow-up analyses.

Our paper on the possible detection and characterization of Ross 318 b — a temperate Super-Earth around an active M-dwarf — has just been published on arXiv.

The work combines CARMENES + HIRES radial velocity data with TESS photometry over a ~15-year baseline to investigate the planetary signal and disentangle it from stellar activity.

I was invited by Giuseppe Conzo and the Gruppo Astrofili Palidoro (Italy) to participate in the project, contributing mainly to the TESS analysis, statistical validation, and habitability calculations.

Paper:
https://arxiv.org/abs/2605.11123

Would love to hear feedback from the community and discuss possible follow-up analyses.

Notre article sur la possible détection et caractérisation de Ross 318 b — une Super-Terre tempérée orbitant une naine rouge active — vient d’être publié sur arXiv.

Le travail combine des données de vitesses radiales de CARMENES + HIRES avec la photométrie de TESS sur une période d’environ 15 ans afin d’étudier le signal planétaire et de le distinguer de l’activité stellaire.

J’ai été invité par Giuseppe Conzo et le Gruppo Astrofili Palidoro (Italie) à participer au projet, en contribuant principalement à l’analyse des données TESS, à la validation statistique et aux calculs d’habitabilité.

Article :
arXiv:2605.11123

Je serais ravi d’avoir les retours de la communauté et d’échanger sur de possibles analyses futures.

Unser Artikel über die mögliche Entdeckung und Charakterisierung von Ross 318 b — einer gemäßigten Supererde, die einen aktiven Roten Zwerg umkreist — wurde gerade auf arXiv veröffentlicht.

Die Arbeit kombiniert Radialgeschwindigkeitsdaten von CARMENES + HIRES mit TESS-Photometrie über eine Zeitspanne von ~15 Jahren, um das planetare Signal zu untersuchen und von der stellaren Aktivität zu trennen.

Ich wurde von Giuseppe Conzo und der Gruppo Astrofili Palidoro (Italien) eingeladen, an diesem Projekt teilzunehmen, wobei ich hauptsächlich zur TESS-Analyse, statistischen Validierung und zu den Berechnungen der Habitabilitätszone beigetragen habe.

Artikel:
https://arxiv.org/abs/2605.11123

Ich würde mich sehr über Feedback aus der Community freuen und mögliche zukünftige Analysen diskutieren.

Our paper on the possible detection and characterization of Ross 318 b — a temperate Super-Earth around an active M-dwarf — has just been published on arXiv.

The work combines CARMENES + HIRES radial velocity data with TESS photometry over a ~15-year baseline to investigate the planetary signal and disentangle it from stellar activity.

I was invited by Giuseppe Conzo and the Gruppo Astrofili Palidoro (Italy) to participate in the project, contributing mainly to the TESS analysis, statistical validation, and habitability calculations.

Paper:
https://arxiv.org/abs/2605.11123

Would love to hear feedback from the community and discuss possible follow-up analyses.