On this page you will find all the publications I have contributed to, grouped into two categories: “Main author” and “Co-author”. For each publication, the entry includes the full author list, a link to the paper, and -for papers where I am the main author- a visual abstract summarising the main results. For questions, feel free to contact me.
As principal author:
The IACOB project XVIII. Prevalence of short-period binaries among Galactic He-rich O stars
- Authors: C. Martínez-Sebastián, R. Gamen, O. G. Benvenuto, E. A. Saavedra, M. Carretero-Castrillo, M. Contreras, G. Holgado, J. Maíz Apellaniz, S. Simón-Díaz
- Publication: A&A 713, L11 (2026)
- arXiv reference: 2608.05421
- Visual Abstract
- Authors: C. Martínez-Sebastián, G. Holgado, S. Simón-Díaz, F. Martins, J. Puls
- Publication: A&A 711, A152 (2026)
- arXiv reference: 2604.26606
- Visual Abstract
The IACOB project XIII. Helium enrichment in O-type stars as a tracer of past binary interaction
- Authors: C. Martínez-Sebastián, S. Simón-Díaz, H. Jin, Z. Keszthelyi, G. Holgado, N. Langer, J. Puls
- Publication: A&A 693, L10 (2025)
- arXiv reference: 2412.14107
- Visual Abstract
As co-author:
- Authors: S. Simón-Díaz, G. Holgado, C. Martínez-Sebastián, M. Carretero-Castrillo, H. Jin, M. A. Urbaneja, R. Gamen, J. Puls, A. de Burgos, M. Garcia, A. Herrero, Z. Keszthelyi, N. Langer, F. Najarro, J.M. Paredes, M. Ribó
- Publication: A&A 711, A151 (2026)
- arXiv referece: 2601.20698
- My contribution: Revision and computation of binarity probability in the sample of O-type stars in the IACOB project and scientific comments to the manuscript. Work in parallel with nitrogen abundance determination and test the hypothesis of dilution effects into abundance determination.
An observational study of rotation and binarity of Galactic O-type runaway stars
- Authors: M. Carretero-Castrillo, M. Ribó, J.M. Paredes, G. Holgado, C. Martínez-Sebastián, S. Simón-Díaz
- Publication: A&A 705, A215 (2026)
- arXiv referece: 2510.21577
- My contribution: Revision and computation of binarity probability in the sample of O-type stars in the IACOB project and scientific comments to the manuscript.
- Authors: D. Galán-Diéguez, S.R. Berlanas, A. Herrero, M. Abdul-Masih, D.J. Lennon, C. Martínez-Sebastián, F.M. Pérez-Toledo
- Publication: A&A 706, A59 (2026)
- arXiv referece: 2510.15540
- My contribution: Observer with the 2.56-m Nordic Optical Telescope (NOT) during October 9-11, 2024 run and scientific comments to the manuscript.
- Authors: J. Sánchez-Sierras, T. Muñoz-Darias, S. E. Motta, R. P. Fender, A. Bahramian, C. Martínez-Sebastián, J. A. Fernández-Ontiveros, J. Casares, M. Armas Padilla, D. A. Green, D. Mata Sánchez, J. Strader, M. A. P. Torres
- Publication: A&A 680, L16 (2023)
- arXiv referece: 2311.12933
- My contribution: This article uses part of my M.Sc. thesis. In particular, I participated in the reduction from the GTC/EMIR spectra of epochs E–18A, E–18B, E–18C, E–18D, E–21A, E–21B, and E–21C. I also obtained, when possible, the K-band photometry from the EMIR acquisition images.
Posters and slides:
From Radiative Transfer Theory to Stellar Atmosphere Codes
- Type of contribution: Open lecture
- Authors: C. Martínez-Sebastián
- Meeting: IAU Massive Star Lectures
- Date: 23/04/2026
A combined study of spectroscopic and photometric variability in massive stars
- Type of contribution: Poster
- Authors: C. Martínez-Sebastián
- Meeting: COEFIS XIV – 2022
- Date: 24/03/2022-25/03/2022