Jaime Villaseñor

Massive binary stars • spectroscopic surveys • stellar evolution

Explore research

Astronomer exploring massive binary stars, born in Chile and researching at MPIA in Heidelberg.

Jaime I. Villaseñor

Jaime I. Villaseñor

From:

Chile

Chile illustration
Very Large Telescope, Paranal
Paranal
Andes mountains near Santiago
Santiago

Currently:

Researcher at MPIA, Heidelberg

MPIA illustration Heidelberg skyline illustration

Research focus:

Massive binary stars & gravitational waves

Research focus illustration

How I work:

Spectroscopic surveys, orbital dynamics, stellar evolution

Workflow illustration
Send me an Email Say hi on Bluesky

You Can find me here

Research

Current projects & collaborations

SDSS-V OBA Stars

SDSS-V OBA Stars

Towards the largest OBA star sample in the Milky Way

Member In prep
B-type Binaries Characterisation (BBC)

B-type Binaries Characterisation (BBC)

Binary properties of B-type stars in the Tarantula Nebula

Lead investigator Ongoing
Binarity at LOw Metallicity (BLOeM)

Binarity at LOw Metallicity (BLOeM)

Investigating massive stars in the Small Magellanic Cloud

Collaborator Ongoing
Galactic Algols

Galactic Algols

Studying mass transfer with Algol binaries in the Milky Way

PI In prep
MINATO

MINATO

Python tools for the analysis of Massive Stars

Developer v0.2.0

Curriculum Vitae

Resume

A snapshot of my research positions, education, and latest publications.

Experience

09.2023 – Present

Postdoc

Max Planck Institute for Astronomy, Germany

Working for the ERC Advanced Grant “Hunting Dormant Black Holes in the Galaxy with SDSS-V” (PI: HW. Rix).

Webpage
09.2021 – 08.2023

Postdoc

KU Leuven, Belgium

Working for the MULTIPLES research programme under an ERC consolidator grant (PI: H. Sana).

Webpage

Education

2016 – 2021

PhD Astronomy

University of Edinburgh, U.K.

“The multiplicity properties and spectral classification of B-type stars”

Prof. Dr. Chris Evans

2014 – 2016

MSc Astronomy

Universidad de La Serena, Chile

“Spectral Classification of B-Type Stars Observed in the Framework of the Galactic O-Star Spectroscopic Survey”

Prof. Dr. Rodolfo Barbá

2007 – 2012

BSc Physics with a major in Astronomy

Universidad de Valparaíso, Chile

“Evolution of Compact Binaries: The Future of Post-Common-Envelope Binaries”

Prof. Dr. Matthias Schreiber

Latest Publications

  • Binarity at LOw Metallicity (BLOeM): Projected rotational velocities D. J. Lennon; S. R. Berlanas; A. Herrero; N. Britavskiy; P. L. Dufton; and 34 authors, including J. Villasenor (2025) — arXiv: 2512.12102
    D. J. Lennon; S. R. Berlanas; A. Herrero; N. Britavskiy; P. L. Dufton; N. Langer; H. Jin; A. Schootemeijer; A. Menon; J. Bestenlehner; P. Crowther; J. S. Vink; J. Bodensteiner; T. Shenar; K. Deshmukh; J. Villasenor; L. Patrick; F. Najarro; A. de Koter; L. Mahy; D. M. Bowman; A. Bobrick; C. J. Evans; M. Gull; G. Holgado; Z. Katabi; J. Kubat; P. Marchant; D. Pauli; M. Pawlak; M. Renzo; D. F. Rocha; A. A. C. Sander; T. Sayada; S. Simon-Diaz; M. Stoop; R. Valli; C. Wang; X.-T. Xu
    ADS arXiv DOI
  • The binary landscape of massive stars at low $Z$: Insights from the BLOeM Campaign J. I. Villaseñor; H. Sana; J. Bodensteiner; N. Britavskiy; L. R. Patrick; and 2 authors (2025) — arXiv: 2511.08675
    J. I. Villaseñor; H. Sana; J. Bodensteiner; N. Britavskiy; L. R. Patrick; T. Shenar; the BLOeM Collaboration
    ADS arXiv DOI
  • The physical properties of post-mass-transfer binaries Rhys Seeburger; Hans-Walter Rix; Kareem El-Badry; Johanna Müller-Horn; Alex J. Dimoff; and 2 authors, including Jaime I. Villaseñor (2025) — arXiv: 2511.13692
    Rhys Seeburger; Hans-Walter Rix; Kareem El-Badry; Johanna Müller-Horn; Alex J. Dimoff; Jan Henneco; Jaime I. Villaseñor
    ADS arXiv DOI Cited 1
  • Interacting binaries on the Main Sequence as in-situ tracers of mass transfer efficiency and stability Koushik Sen; Mathieu Renzo; Harim Jin; Norbert Langer; Abel Schootemeijer; and 6 authors, including Jaime I. Villaseñor (2025) — arXiv: 2511.15347
    Koushik Sen; Mathieu Renzo; Harim Jin; Norbert Langer; Abel Schootemeijer; Jaime I. Villaseñor; Laurent Mahy; Aldana Grichener; Neev Shah; Chen Wang; Xiao-Tian Xu
    ADS arXiv DOI
  • The large-scale kinematics of young stars in the Milky Way disc: First results from SDSS-V Eleonora Zari; Jaime Villaseñor; Marina Kounkel; Hans-Walter Rix; Neige Frankel; and 15 authors (2025) — Astronomy and Astrophysics 703:A303
    Eleonora Zari; Jaime Villaseñor; Marina Kounkel; Hans-Walter Rix; Neige Frankel; Andrew Tkachenko; Sergey Khoperskov; Elena D'Onghia; Alexandre Roman-Lopes; Carlos Román-Zúñiga; Guy S. Stringfellow; Jonathan C. Tan; Aida Wofford; Dmitry Bizyaev; John Donor; José G. Fernández-Trincado; Sean Morrison; Kaike Pan; Sebastian F. Sanchez; Andrew Saydjari
    ADS arXiv DOI
  • HIP 15429: A newborn Be star on an eccentric binary orbit Johanna Müller-Horn; Kareem El-Badry; Hans-Walter Rix; Tomer Shenar; Rhys Seeburger; and 7 authors, including Jaime I. Villaseñor (2025) — Astronomy and Astrophysics 701:A9
    Johanna Müller-Horn; Kareem El-Badry; Hans-Walter Rix; Tomer Shenar; Rhys Seeburger; Jaime I. Villaseñor; Julia Bodensteiner; David W. Latham; Allyson Bieryla; Lars A. Buchhave; Howard Isaacson; Andrew W. Howard
    ADS arXiv DOI Cited 7
  • A high fraction of close massive binary stars at low metallicity H. Sana; T. Shenar; J. Bodensteiner; N. Britavskiy; N. Langer; and 72 authors, including J. I. Villaseñor (2025) — Nature Astronomy 9:1337
    H. Sana; T. Shenar; J. Bodensteiner; N. Britavskiy; N. Langer; D. J. Lennon; L. Mahy; I. Mandel; S. E. de Mink; L. R. Patrick; J. I. Villaseñor; M. Dirickx; M. Abdul-Masih; L. A. Almeida; F. Backs; S. R. Berlanas; M. Bernini-Peron; D. M. Bowman; V. A. Bronner; P. A. Crowther; K. Deshmukh; C. J. Evans; M. Fabry; M. Gieles; A. Gilkis; G. González-Torà; G. Gräfener; Y. Götberg; C. Hawcroft; V. Hénault-Brunet; A. Herrero; G. Holgado; R. G. Izzard; A. de Koter; S. Janssens; C. Johnston; J. Josiek; S. Justham; V. M. Kalari; J. Klencki; J. Kubát; B. Kubátová; R. R. Lefever; J. Th. van Loon; B. Ludwig; J. Mackey; J. Maíz Apellániz; G. Maravelias; P. Marchant; T. Mazeh; A. Menon; M. Moe; F. Najarro; L. M. Oskinova; R. Ovadia; D. Pauli; M. Pawlak; V. Ramachandran; M. Renzo; D. F. Rocha; A. A. C. Sander; F. R. N. Schneider; A. Schootemeijer; E. C. Schösser; C. Schürmann; K. Sen; S. Shahaf; S. Simón-Díaz; L. A. C. van Son; M. Stoop; S. Toonen; F. Tramper; R. Valli; A. Vigna-Gómez; J. S. Vink; C. Wang; R. Willcox
    ADS arXiv DOI Cited 7
  • Sloan Digital Sky Survey-V: Pioneering Panoptic Spectroscopy Juna A. Kollmeier; Hans-Walter Rix; Conny Aerts; James Aird; Pablo Vera Alfaro; and 215 authors, including Jaime Villaseñor (2025) — arXiv: 2507.06989
    Juna A. Kollmeier; Hans-Walter Rix; Conny Aerts; James Aird; Pablo Vera Alfaro; Andrés Almeida; Scott F. Anderson; Óscar Jiménez Arranz; Stefan M. Arseneau; Roberto Assef; Shir Aviram; Catarina Aydar; Carles Badenes; Avrajit Bandyopadhyay; Kat Barger; Robert H. Barkhouser; Franz E. Bauer; Chad Bender; Felipe Besser; Binod Bhattarai; Pavaman Bilgi; Jonathan Bird; Dmitry Bizyaev; Guillermo A. Blanc; Michael R. Blanton; John Bochanski; Jo Bovy; Christopher Brandon; William Nielsen Brandt; Joel R. Brownstein; Johannes Buchner; Joseph N. Burchett; Joleen Carlberg; Andrew R. Casey; Lesly Castaneda-Carlos; Priyanka Chakraborty; Julio Chanamé; Vedant Chandra; Brian Cherinka; Igor Chilingarian; Johan Comparat; Maren Cosens; Kevin Covey; Jeffrey D. Crane; Nicole R. Crumpler; Katia Cunha; Tim Cunningham; Xinyu Dai; Jeremy Darling; James W. Davidson, Jr.; Megan C. Davis; Nathan De Lee; Niall Deacon; José Eduardo Méndez Delgado; Sebastian Demasi; Mariia Demianenko; Mark Derwent; Elena D'Onghia; Francesco Di Mille; Bruno Dias; John Donor; Niv Drory; Tom Dwelly; Oleg Egorov; Evgeniya Egorova; Kareem El-Badry; Mike Engelman; Mike Eracleous; Xiaohui Fan; Emily Farr; Logan Fries; Peter Frinchaboy; Cynthia S. Froning; Boris T. Gänsicke; Pablo García; Joseph Gelfand; Nicola Pietro Gentile Fusillo; Simon Glover; Katie Grabowski; Eva K. Grebel; Paul J Green; Catherine Grier; Pramod Gupta; Aidan C. Gray; Maximilian Häberle; Patrick B. Hall; Randolph P. Hammond; Keith Hawkins; Albert C. Harding; Viola Hegedűs; Tom Herbst; J. J. Hermes; Paola Rodríguez Hidalgo; Thomas Hilder; David W Hogg; Jon A. Holtzman; Danny Horta; Yang Huang; Hsiang-Chih Hwang; Hector Javier Ibarra-Medel; Julie Imig; Keith Inight; Arghajit Jana; Alexander P. Ji; Paula Jofre; Matt Johns; Jennifer Johnson; James W. Johnson; Evelyn J. Johnston; Amy M Jones; Ivan Katkov; Anton M. Koekemoer; Marina Kounkel; Kathryn Kreckel; Dhanesh Krishnarao; Mirko Krumpe; Nimisha Kumari; Thomas Kupfer; Ivan Lacerna; Chervin Laporte; Sebastien Lepine; Jing Li; Xin Liu; Sarah Loebman; Knox Long; Alexandre Roman-Lopes; Yuxi Lu; Steven Raymond Majewski; Dan Maoz; Kevin A. McKinnon; Ilija Medan; Andrea Merloni; Dante Minniti; Sean Morrison; Natalie Myers; Szabolcs Mészáros; Kirpal Nandra; Prasanta K. Nayak; Melissa K Ness; David L. Nidever; Thomas O'Brien; Micah Oeur; Audrey Oravetz; Daniel Oravetz; Jonah Otto; Gautham Adamane Pallathadka; Povilas Palunas; Kaike Pan; Daniel Pappalardo; Rakesh Pandey; Castalia Alenka Negrete Peñaloza; Marc H. Pinsonneault; Richard W. Pogge; Manuchehr Taghizadeh Popp; Adrian M. Price-Whelan; Nadiia Pulatova; Dan Qiu; Solange Ramirez; Amy Rankine; Claudio Ricci; Jessie C. Runnoe; Sebastian Sanchez; Mara Salvato; Natascha Sattler; Andrew K. Saydjari; Conor Sayres; Kevin C. Schlaufman; Donald P. Schneider; Matthias R. Schreiber; Axel Schwope; Javier Serna; Yue Shen; Cristóbal Sifón; Amrita Singh; Amaya Sinha; Stephen Smee; Ying-Yi Song; Diogo Souto; Keivan G. Stassun; Matthias Steinmetz; Alexander Stone-Martinez; Guy Stringfellow; Amelia Stutz; José; Sá; nchez-Gallego; Jonathan C. Tan; Jamie Tayar; Riley Thai; Ani Thakar; Yuan-Sen Ting; Andrew Tkachenko; Gagik Tovmasian; Benny Trakhtenbrot; José G. Fernández-Trincado; Nicholas Troup; Jonathan Trump; Sarah Tuttle; Roeland P. van der Marel; Sandro Villanova; Jaime Villaseñor; Stefanie Wachter; Zachary Way; Anne-Marie Weijmans; David Weinberg; Adam Wheeler; John Wilson; Alessa I. Wiggins; Tony Wong; Qiaoya Wu; Dominika Wylezalek; Xiang-Xiang Xue; Qian Yang; Nadia Zakamska; Eleonora Zari; Gail Zasowski; Grisha Zeltyn; Catherine Zucker; Carlos G. Román Zúñiga; Rodolfo de J. Zermeño
    ADS arXiv DOI Cited 40
  • The Nineteenth Data Release of the Sloan Digital Sky Survey SDSS Collaboration; Gautham Adamane Pallathadka; Mojgan Aghakhanloo; James Aird; Andrés Almeida; and 207 authors, including Jaime Villaseñor (2025) — arXiv: 2507.07093
    SDSS Collaboration; Gautham Adamane Pallathadka; Mojgan Aghakhanloo; James Aird; Andrés Almeida; Singh Amrita; Friedrich Anders; Scott F. Anderson; Stefan Arseneau; Consuelo González Avila; Shir Aviram; Catarina Aydar; Carles Badenes; Jorge K. Barrera-Ballesteros; Franz E. Bauer; Aida Behmard; Michelle Berg; F. Besser; Christian Moni Bidin; Dmitry Bizyaev; Guillermo Blanc; Michael R. Blanton; Jo Bovy; William Nielsen Brandt; Joel R. Brownstein; Johannes Buchner; Esra Bulbul; Joseph N. Burchett; Leticia Carigi; Joleen K. Carlberg; Andrew R. Casey; Priyanka Chakraborty; Julio Chanamé; Vedant Chandra; Cristina Chiappini; Igor Chilingarian; Johan Comparat; Kevin Covey; Nicole Crumpler; Katia Cunha; Elena D'Onghia; Xinyu Dai; Jeremy Darling; Megan Davis; Nathan De Lee; Niall Deacon; José Eduardo Méndez Delgado; Sebastian Demasi; Mariia Demianenko; Delvin Demke; John Donor; Niv Drory; Monica Alejandra Villa Durango; Tom Dwelly; Oleg Egorov; Evgeniya Egorova; Kareem El-Badry; Mike Eracleous; Xiaohui Fan; Emily Farr; Douglas P. Finkbeiner; Logan Fries; Peter Frinchaboy; Nicola Pietro Gentile Fusillo; Luis Daniel Serrano Félix; Boris Gaensicke; Emma Galligan; Pablo García; Joseph Gelfand; Katie Grabowski; Eva Grebel; Paul J Green; Hannah Greve; Catherine Grier; Emily Griffith; Paloma Guetzoyan; Pramod Gupta; Zoe Hackshaw; Patrick B. Hall; Keith Hawkins; Viola Hegedűs; Saskia Hekker; T. M. Herbst; J. J. Hermes; Lorena Hernández-García; Pranavi Hiremath; David W Hogg; Jon Holtzman; Keith Horne; Danny Horta; Yang Huang; Brian Hutchinson; Maximilian Häberle; Hector Javier Ibarra-Medel; Alexander P. Ji; Paula Jofre; James W. Johnson; Jennifer Johnson; Evelyn J. Johnston; Mary Kaldor; Ivan Katkov; Arman Khalatyan; Sergey Khoperskov; Ralf Klessen; Matthias Kluge; Anton M. Koekemoer; Juna A. Kollmeier; Marina Kounkel; Kathryn Kreckel; Dhanesh Krishnarao; Mirko Krumpe; Ivan Lacerna; Chervin Laporte; Sebastien Lepine; Jing Li; Fu-Heng Liang; Guilherme Limberg; Xin Liu; Sarah Loebman; Knox Long; Yuxi Lu; Madeline Lucey; Alejandra Z. Lugo-Aranda; Mary Loli Martínez Martinez-Aldama; Kevin McKinnon; Ilija Medan; Andrea Merloni; Sean Morrison; Natalie Myers; Szabolcs Mészáros; Johanna Müller-Horn; Samir Nepal; Melissa Ness; David Nidever; Christian Nitschelm; Audrey Oravetz; Jonah Otto; Kaike Pan; Facundo Pérez Paolino; Castalia Alenka Negrete Peñaloza; Marc Pinsonneault; Manuchehr Taghizadeh Popp; Adrian Price-Whelan; Nadiia Pulatova; Anna Barbara Queiroz; Jordan Raddick; Amy Rankine; Hans-Walter Rix; Carlos Román-Zúñiga; Daniela Fernández Rosso; Jessie Runnoe; Serat Mahmud Saad; Mara Salvato; Sebastian F. Sanchez; Natascha Sattler; Andrew Saydjari; Conor Sayres; Kevin Schlaufman; Donald P. Schneider; Axel Schwope; Lucas M. Seaton; Rhys Seeburger; Javier Serna; Sanjib Sharma; Yue Shen; Amaya Sinha; Brian Sizemore; Marzena Sniegowska; Yingyi Song; Diogo Souto; Keivan Stassun; Matthias Steinmetz; Zachary Stone; Alexander Stone-Martinez; Guy S. Stringfellow; Aurora Mata Sánchez; José Sánchez-Gallego; Jonathan Tan; Jamie Tayar; Riley Thai; Ani Thakar; Pierre Thibodeaux; Yuan-Sen Ting; Andrew Tkachenko; Benny Trakhtenbrot; Jose G. Fernandez Trincado; Nicholas Troup; Jonathan R. Trump; Natalie Ulloa; Roeland P. Van der Marel; Pablo Vera; Sandro Villanova; Jaime Villaseñor; Ji Wang; Zachary Way; Anne-Marie Weijmans; Adam Wheeler; John C. Wilson; Aida Wofford; Tony Wong; Qiaoya Wu; Dominika Wylezalek; Xiang-Xiang Xue; Renbin Yan; Qian Yang; Nadia Zakamska; Eleonora Zari; Gail Zasowski; Grisha Zeltyn; Zheng Zheng; Catherine Zucker; Rodolfo de J. Zermeño
    ADS arXiv DOI Cited 26
  • Binarity at LOw Metallicity (BLOeM): Multiplicity properties of Oe and Be stars J. Bodensteiner; T. Shenar; H. Sana; N. Britavskiy; P. A. Crowther; and 38 authors, including J. I. Villaseñor (2025) — Astronomy and Astrophysics 698:A38
    J. Bodensteiner; T. Shenar; H. Sana; N. Britavskiy; P. A. Crowther; N. Langer; D. J. Lennon; L. Mahy; L. R. Patrick; J. I. Villaseñor; M. Abdul-Masih; D. M. Bowman; A. de Koter; S. E. de Mink; K. Deshmukh; M. Fabry; A. Gilkis; Y. Götberg; G. Holgado; R. G. Izzard; S. Janssens; V. M. Kalari; Z. Keszthelyi; J. Kubát; I. Mandel; G. Maravelias; L. M. Oskinova; D. Pauli; V. Ramachandran; D. F. Rocha; M. Renzo; A. A. C. Sander; F. R. N. Schneider; A. Schootemeijer; K. Sen; M. Stoop; S. Toonen; J. Th. van Loon; R. Valli; A. Vigna-Gómez; J. S. Vink; C. Wang; X.-T. Xu
    ADS arXiv DOI Cited 13

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