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Astronomer
About me
About me
My name is Ylva Götberg and I am a stellar astrophysicist working as an assistant professor at the Institute of Science and Technology Austria (ISTA) (see also my ISTA research group website). My main topic of research is interacting binary stars and, in particular, stars stripped of their hydrogen-rich envelopes through binary interaction. My research branch theoretical, computational and observational components.
Welcome to my webpage!
News
News
Below, I share news related to the research that we do in my team and within collaborations.
Position openings in the 2SStars team!
Position openings in the 2SStars team!
2025-10-31
I am opening two new positions in the 2SStars team! Consider applying to:
Postdoctoral position -
Deadline: December 20, 2025PhD position -
Deadline: January 8, 2026
Capturing the Sun in Austria
Capturing the Sun in Austria
2025-10-16
We saw some really nice prominences and structure on the Sun's surface. The image is captured with a Coronado telescope together with a camera through Austria's clear skies.
Our telescope is for outreach purposes and generously funded by the VISTA center.
Bright RSGs also missing at very low Z
Bright RSGs also missing at very low Z
2025-10-14
New article on arXiv! My collaborator Abel Schootemeijer (U Bonn) led a study where we identified that red supergiants consistently cannot reach luminosities above log(L/Lsun) = 5.6 - independently of the metallicity!
This could mean that Wolf-Rayet stars form at all metallicities.
New ERC starting grant program: 2SStars
New ERC starting grant program: 2SStars
2025-09-04
My program The Role of Binary-stripped Stars: from Atomic Scales to Cosmic Dawn (2SStars) was awarded the ERC starting grant! We will be doing research in the intersection of observation and theory when exploring what we can learn from stripped stars.
Keep an eye out for opening both postdoctoral and PhD student positions!
Final presentations of scientific interns
Final presentations of scientific interns
2025-09-03
Santiago Herrera-Guzmán, Syafira Putri, and Angie Dávila-Porras presented their results to the research group at ISTA. Syafira and Angie are now starting their master's studies, and Santiago will write his bachelor's thesis.
New work presented at conference
New work presented at conference
2025-08-24
Dandan Wei and Debasish Dutta presented their recent work at the conference "Binary stars in a New Era" in Lijiang, China.
New group member:
Santiago Herrera Guzmán
New group member:
Santiago Herrera Guzmán
2025-06-15
Santiago Herrera Guzmán from Universidad de Antioquia (Colombia) is joining us over the summer for a computational internship. Santiago was selected as a GROW fellow through the ISTernship summer internship program.
ISTA fellowship call open
ISTA fellowship call open
2025-06-02
The call for applications for the ISTA postdoctoral fellowship program has opened! Deadline to apply: September 16, 2025.
New group member:
Bethany Burt
New group member:
Bethany Burt
2025-06-01
Bethany Burt from Max Planck Institute for Astronomy (Germany) is continuing her scientific project at ISTA during the summer through the ISTernship program. Bethany uses CMFGEN to measure CNO abundances of envelope-stripped stars.
XShootU collaboration meeting @ISTA
XShootU collaboration meeting @ISTA
2025-05-07
We hosted the 4th in-person meeting for the XShootU collaboration at ISTA in May 2025. Thanks to the scientific organizers and the local events team at ISTA!
New group member:
Angie Dávila Porras
New group member:
Angie Dávila Porras
2025-04-15
Angie Dávila Porras is joining us from Yachay Tech University (Ecuador) as a scientific intern. Angie focuses on binary population synthesis modeling.
New group member:
Syafira Putri
New group member:
Syafira Putri
2024-03-15
Syafira Putri is joining us as a scientific intern working on stellar evolution and dynamics modeling of circumbinary planets. Co-supervised by Dr. Santiago Torres.
Article accepted for publication!
Article accepted for publication!
2025-03-14
Beryl Hovis-Afflerbach's article describing how metallicity affects the mass distribution of stripped stars is accepted for publication in Astronomy & Astrophysics! I believe that this project, that started during Beryl's undergraduate studies, will be very useful for future studies of stripped stars.
clip_ORF_2.movWarum Eigentlish, December 2024
Warum Eigentlish, December 2024
2024-12-16
Participation in the program Warum Eigentlish at the Austrian television channel ORF. I explain the evolution of binary stars and why we think they are interesting.
Artikel i tidsskriften Populär Astronomi
Artikel i tidsskriften Populär Astronomi
2024-12
En intervju publiceras i decemberupplagan av tidsskriften Populär Astronomi där jag berättar om min resa som ledde till upptäckten av heliumstjärnor.
The ISTA Astronomy seminar series kicks off!
The ISTA Astronomy seminar series kicks off!
2024-11-07
We received funding to host astronomy seminars at ISTA! As the lead organizer, I hope for great success! The photo is from our first seminar that was excellently delivered by prof. Emeline Bolmont of University of Geneva (Switzerland). We thank Dafne Valdez Lopez for great administrative support!
Selected for TIME100 Next
Selected for TIME100 Next
2024-10-02
My collaborator Maria Drout and I were selected for the TIME100 Next 2024. Here is an associated press release.
New group member:
Debasish Dutta
New group member:
Debasish Dutta
2024-09-15
Debasish Dutta joins the group as a PhD student! Debasish is working on evolutionary and spectral modeling of stripped stars in both the optical and ultraviolet regimes.
New group member:
Dandan Wei
New group member:
Dandan Wei
2024-09-15
Dr. Dandan Wei won the ISTA postdoctoral fellowship and joins the group to work on the evolutionary histories of observed envelope-stripped stars.
Lorentz center workshop on stripped stars
Lorentz center workshop on stripped stars
2024-07-22
We organized a workshop treating the future of stripped star explorations at the Lorentz Center (The Netherlands). Thanks a lot to the excellent team at the Lorentz center!
Ultraviolet Explorer approved to launch
Ultraviolet Explorer approved to launch
2024-02-14
The Ultraviolet Explorer (UVEX) mission has been approved for NASA Midex! As part of the science team and development of Science Pillar 1, I am looking forward to the launch planned in 2030!
See the white paper and an associated press release.
Properties of observed stripped stars
Properties of observed stripped stars
2023-12-15
We present first stellar property constraints for stripped stars observed in the Magellanic Clouds by fitting spectral models with observed optical spectra. The stars match well with expectations for massive stars stripped of their envelopes during the long-lasting helium-core burning phase
Discovery of hot, intermediate-mass stripped stars
Discovery of hot, intermediate-mass stripped stars
2023-12-15
My collaborator Maria Drout and I lead the article in the journal Science where we describe our discovery of hot, compact, helium-rich stars that agree well with expectations for massive stars stripped of their hydrogen-rich envelopes through binary interaction.
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