Nicolás Tejos
Nicolás Tejos, Ph.D.
Astronomer
Astronomer
Profesor Adjunto / Associate Professor
Instituto de Física
Pontificia Universidad Católica de Valparaíso
email: nicolas.tejos @ pucv.cl
phone: +56 32 227 4900
ORCiD: 0000-0002-1883-4252
IG: @astro.nt
Background
I am a Chilean astrophysicist working in the Instituto de Física at Pontificia Universidad Católica de Valparaiso (PUCV). My main research interest is on the connection between the intergalactic medium (IGM) and galaxies, in the context of the large-scale structure of the Universe. I am mainly focused on how this relationship depends on cosmic environment (voids, filaments, groups, clusters), and cosmic time (early and late Universe). Ultimately, I wish to test the current cosmological paradigm prediction that baryonic matter follows the cosmic web shaped by dark matter and dark energy.
I obtained my B.Sc. and M.Sc. degrees in Astronomy at Universidad de Chile; my M.Sc. thesis was on Absorption systems in optical spectra of gamma-ray bursts (GRBs) afterglows, under supervision of Prof. Sebastian Lopez. Then I moved to the UK, where I obtained my Ph.D. degree in Astrophysics at University of Durham; my Ph.D. thesis was on The relationship between the intergalactic medium and galaxies under supervision of Prof. Simon L. Morris and Prof. Tom Theuns. My first postdoctoral position was at the University of California, Santa Cruz where I worked in close collaboration with Prof. J Xavier Prochaska and the IMPS group. I then moved back to Chile, for my second postdoctoral position at the Millennium Institute of Astrophysics being hosted by the Pontificia Universidad Católica de Chile in Santiago. In 2017, I moved to Valparaíso as a faculty at PUCV where I have been working towards developing astronomy and astrophysics as part of its Instituto de Física.
During my professional career, I have been the PI on multiple world-class telescope projects, including five on the Hubble Space Telescope (HST) and several on the Very Large Telescope (VLT), Gemini, Magellan, among others. Recently, I received the 2021 AAAS Newcomb Cleveland Prize shared among co-authors of the paper “A single fast radio burst localized to a massive galaxy at cosmological distance” published in Science.
Research Projects & Collaborations
Recent research projects
Tomography of the gaseous universe using gravitational lenses - FONDECYT Regular 2023 No. 1231187 (Co-I)
Characterizing the environments and foreground structures of well-localized fast radio bursts - FONDECYT Iniciación 2019 No. 11191217 (PI)
Witnessing the baryon cycle of galaxies through gravitational-arc tomography - FONDECYT Regular 2019 No. 1191232 (Co-I)
Ongoing collaborations
CV & Publications
Curriculum Vitae (CV): extended version
Updated publications list: NASA ADS, Google Scholar, ORCiD
Teaching 2024
Técnicas Observacionales en Astrofísica (Posgrado) - FIS7008
Astronomía Galáctica - FIS2436 XX
Física y Tamaño - FIS017
Programación - FIS1220
Recent ONLINE PRESENTATIONS
"Optical follow-up of FRBs: past/present/future challenges", FRB2023 conference
"The circumgalactic medium revealed by gravitational-arc tomography", CGI seminar 2022
"Summary of article Tejos et al. 2021 (4 min)", Galactic Atmospheres 2022
"High-cadence optical limits on the repeating FRB 180916", FRB2021 conference
"IFU Tutorial", KITP Halo21 conference
"Optical Follow-up of Fast Radio Bursts", FRB2020 conference
Video (27/12/23): SurTV: Juntos Otra Mañana (matinal)
Nota de prensa (27/12/23): BioBioChile: Astrónomos chilenos logran medir por primera vez el tamaño de las nubes que rodean a las galaxias
Nota de prensa (27/12/23): La Nación: Cientificos chilenos lideran impresionante hallazgo sobre las nubes que rodean las galaxias
Nota de prensa (12/12/23): El Mercurio de Antofagasta: Basura espacial y meteoritos
Entrevista (07/12/23): El Mostrador: Fast Radio Bursts
Entrevista (14/01/22): La Tercera: Observatorio Mancomunado de Astrofísica
Video (13/05/21): Zoom a la Actualidad Internacional
Video (10/02/21): AAAS Newcomb Cleveland Prize 2020
Video (31/07/20): Half the universe was missing... until now (by Veritasium)
Webinar (15/07/20): La estructura a gran escala del Universo
Entrevista (24/01/20): La Tercera: Medio Circungalactico
Entrevista (10/08/19): El Mercurio de Valparaiso: Fast Radio Bursts
Entrevista (08/08/19): VRIEA PUCV: Fast Radio Bursts
Video (02/07/19): SoyChile: Eclipse Solar en Chile
Press release (27/06/19): Gemini Observatory: Fast Radio Bursts
Video (06/06/19): Un café con Valparaiso: Eclipses
Entrevista (01/02/18): El Mostrador: Astrónomos chilenos desarrollan nueva técnica para estudiar el Halo de las Galaxias
Nota de prensa (01/02/18): El Mercurio: Gravitational-arc tomography
Entrevista (01/10/17): El Mercurio de Valparaiso: Medio Intergaláctico
Nota de divulgación MAS (07/05/17): Nuestra investigación: En busca de los bariones perdidos del Universo
Entrevista (27/08/14): La Tercera: Medio Intergaláctico
"Believe nothing on the faith of traditions,
even though they have been held in honor
for many generations and in diverse places.
Do not believe a thing because many people speak of it.
Do not believe on the faith of the sages of the past.
Do not believe what you yourself have imagined,
persuading yourself that a God inspires you.
Believe nothing on the sole authority of your masters and priests.
After examination, believe what you yourself have tested
and found to be reasonable,
and conform your conduct thereto."