PhD Position in Search for Earth-Sized Planets Transiting Nearby Ultra-Cool Dwarf Stars / PhD Position in Search for Earth-Sized Planets Transiting Nearby Ultra-Cool Dwarf Stars

ETH Zurich - March 8, 2026

PhD Position in Search for Earth-Sized Planets Transiting Nearby Ultra-Cool Dwarf Stars (DUET Project)

100%, Zurich, fixed-term

Join the SPECULOOS (Search for habitable Planets EClipsing ULtra-cOOl Stars) project, an international, ground-based exoplanet survey employing a network of small, fully robotic telescopes to detect Earth-sized planets that transit ultra-cool dwarf stars. These stars present unique opportunities for the detection and detailed characterization of rocky exoplanets.

Project Background

The southern SPECULOOS observatory (SSO) at Paranal is being equipped with a cutting-edge dual-band imaging system, DUET, designed to provide simultaneous visible and near-infrared observations. This innovative capability aims to detect minor planetary transit signals that may be obscured by stellar variability in low-mass stars and brown dwarfs. The DUET system is scheduled for commissioning on two SPECULOOS telescopes in 2027, with one infrared camera already operational at SSO.

Job Description

The PhD student will be instrumental in the installation, commissioning, and initial scientific exploitation of the DUET system. The focus of the project is to utilize simultaneous visible and infrared observations to enhance the precision of transit parameters and disentangle stellar and atmospheric variability from planetary signals. This will require the development of advanced techniques for the informed processing and joint analysis of time-series data.

The successful candidate will conduct observational programs with the SPECULOOS facility and actively engage in the scientific activities and operations of the international consortium. This PhD project offers hands-on experience with astronomical instrumentation and state-of-the-art data analysis in a world-leading research environment at ETH Zurich. The work will directly contribute to the preparation and characterization of prime targets for atmospheric studies with the James Webb Space Telescope, furthering our understanding of potentially habitable Earth analogues around nearby low-mass stars.

Keywords

  • Exoplanets
  • Transit Photometry
  • Ultra-Cool Dwarfs
  • SPECULOOS
  • Astronomical Instrumentation
  • Visible and Near-Infrared Observations
  • Stellar Variability
  • Time-Series Analysis

Skills Development

Throughout the PhD, the student will gain expertise in:

  • Ground-based exoplanet transit surveys
  • Operation, installation, and commissioning of astronomical instrumentation
  • Visible and near-infrared photometry
  • Joint analysis of time-series data
  • Mitigation and modeling of stellar variability in ultra-cool dwarf stars
  • Transit detection and parameter estimation
  • Advanced data reduction and statistical analysis techniques
  • Observing campaigns with robotic telescope networks
  • Scientific writing, conference presentations, and international collaboration

Start Date and Duration

The PhD position (100%) is expected to commence in September 2026 (or as agreed with the successful candidate). The initial appointment is for four years, subject to satisfactory progress in accordance with ETH Zurich doctoral regulations.

Profile

  • Master's degree in astrophysics, physics, astronomy, or a closely related field
  • Strong interest in exoplanet science and observational astronomy
  • Interest in or experience with astronomical instrumentation and/or data analysis
  • Programming skills (e.g., Python; experience with time-series analysis is an asset)
  • Ability to work independently and as part of an international collaboration
  • Willingness to participate in observing campaigns and instrument commissioning
  • Fluency in English (spoken and written)

Workplace

Relish the opportunity to work in an interdisciplinary and international research environment at ETH Zurich, one of the world’s leading institutions for science and technology.

We Offer

  • Fully funded position with a competitive salary in accordance with ETH standards
  • An interdisciplinary and international research environment
  • Numerous additional benefits

We Value Diversity and Sustainability

ETH Zurich is committed to fostering an inclusive culture that promotes equality of opportunity. We value diversity and strive to create a working and learning environment that respects the rights and dignity of all staff and students. Explore our Equal Opportunities and Diversity initiatives to understand our commitment to a fair, open environment. Sustainability is one of our core values, and we continuously strive towards a climate-neutral future.

Curious? So Are We.

If you're ready to take the next step in your career, we invite you to apply online using the form below. Please note, only applications matching the job profile will be considered.

About ETH Zurich

ETH Zurich ranks as one of the world’s leading universities specializing in science and technology. It is renowned for its excellent education, groundbreaking fundamental research, and seamless transfer of new knowledge into society. With over 30,000 individuals from more than 120 countries, our university fosters independent thinking and provides a stimulating environment that inspires excellence. Situated in the heart of Europe, we work collectively to develop solutions for today’s and tomorrow’s global challenges.

Location : Fully
Country : Switzerland

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