Borja Pérez-Díaz | Borja Perez-Diaz | Doctor in Astrophysics

The NUVOLOSO project. Understanding high-z galaxies with low- and medium-resolution observations

Mon, 13 Jul 2026 00:00:00 +0000

Beyond the [OIII]4363 auroral line: [NeIII]3868 as a direct tracer of the electron temperature

Fri, 19 Jun 2026 00:00:00 +0000

The early maturity of high-redshift galaxies: Insights from sSFR, M/L, and SFHs at z ∼ 7─14

Wed, 17 Jun 2026 00:00:00 +0000

From "The Cliff" to "Virgil": Mapping the Spectral Diversity of Little Red Dots with JWST/NIRSpec

Wed, 20 May 2026 00:00:00 +0000

Not so isolated: Green Pea galaxies in overdense environments revealed by VLT/MUSE

Thu, 07 May 2026 00:00:00 +0000

Investigating ionising sources and the complex interstellar medium of GHZ2 at z = 12.3

Thu, 09 Apr 2026 00:00:00 +0000

Chemical enrichment in LINERs from MaNGA: II. Characterizing the shape of the radial metallicity gradients

Wed, 18 Feb 2026 00:00:00 +0000

Andromeda's tenuous veil: A likely Milky Way nebula projected toward M31

Tue, 16 Dec 2025 00:00:00 +0000

Astrophysics and Cosmology

Tue, 02 Sep 2025 00:00:00 +0000

Uncompleted Handnotes: the following handnotes are being completed in a slow but continuous way, please be patient.

The following handnotes were originally taken in 2013/14 from Prof. Lysiane Mornas and Prof. Luigi Toffolatti. The writter (Dr. Borja Pérez-Díaz) takes fully responsability on the content provided, scientific rigor and updated references.

INDEX

Part I. The Observable in Astrophysics
- 1. Introduction to astrophysics and cosmology
- 2. General properties of stars
- 1. Zoology of astrophysical objects
- 1. Emission, absorption and detection of the radiaton
Part II. The Physics of Stars
- 1. Structure equations
- 1. Properties of the stellar matter
- 1. Solutions to the structure equations
- 1. Stellar evolution
- 1. Binary systems with mass transfer
- 1. Astrosysmology and variable stars
Part III. Galaxies and Active Galactic Nuclei
- 1. Galaxies in the Universe
- 1. Active Galactic Nuclei and other energetic sources
Part IV. Large Scale Structure and Cosmology
- 1. Large Scale Structure
- 1. Statistics of galaxy distributions
- 1. Friedman models
Part V. Appendix
- A. Measurements of distances
- B. Thermal History of the Universe

TRICEPS - Tracing Rotation with Ionized Carbon in Early Primeval Systems

Tue, 01 Jul 2025 00:00:00 +0000

TRICEPS is a survey of 15 massive galaxies at z=4-5, when the Universe was less than 1.5 Gyr old. TRICEPS combines new observations from ALMA, JWST, and the VLA, as well as ancillary data from HST, Spitzer, and Herschell.

The main goal is of TRICEPS is to trace the distribution of baryons and dark matter in the most distant rotation-supported galaxies, using ALMA [CII] data to trace the rotation curve, JWST NIR data to trace the stellar mass, and VLA CO(1-0) data to trace the gas mass.

The P.I: of the project is Prof. Federico Lelli.

Far-IR Emission Lines; Revealing the True Chemical Enrichment History

Mon, 23 Jun 2025 00:00:00 +0000

Sulfur and Nitrogen; Key Players in the Chemical Enrichment Story

Mon, 23 Jun 2025 00:00:00 +0000

Sulphur abundances in star-forming regions from optical emission lines: A new approach based on photoionization models consistent with the direct method

Sun, 01 Jun 2025 00:00:00 +0000

GALEVOL 2025 - 2nd IAA-CSIC Severo Ochoa Advanced School on Galaxy Evolution

Mon, 19 May 2025 00:00:00 +0000

A deep-dive beneath the mass-metallicity relation: Unveiling chemical enrichment in galaxies through infrared emission lines

Thu, 01 May 2025 00:00:00 +0000

The Andromeda Veil: Combining MEGARA and JAST80 to Probe the Nature of a Faint Nebula Towards M31

Thu, 01 May 2025 00:00:00 +0000

Exploring the hardness of the ionizing radiation with the infrared softness diagram: II. Bimodal distributions in both the ionizing continuum slope and the excitation in active galactic nuclei

Tue, 01 Apr 2025 00:00:00 +0000

Chemical enrichment in LINERs from MaNGA: I. Tracing the nuclear abundances of oxygen and nitrogen in LINERs with varied ionizing sources

Sat, 01 Feb 2025 00:00:00 +0000

Unveiling chemical enrichment in galaxies through infrared emission lines

Mon, 15 Jul 2024 00:00:00 +0000

Projects

Sun, 19 May 2024 00:00:00 +0000

Unveiling chemical enrichment in galaxies through infrared emission lines

Mon, 06 May 2024 00:00:00 +0000

Chemical abundances and deviations from the solar S/O ratio in the gas-phase interstellar medium of galaxies based on infrared emission lines

Wed, 01 May 2024 00:00:00 +0000

Contribution of very massive stars to the sulfur abundance in star-forming galaxies: Role of pair-instability supernovae

Wed, 01 May 2024 00:00:00 +0000

Exploring the hardness of the ionising radiation with the infrared softness diagram. I. Similar effective temperature scales for starbursts and (ultra)luminous infrared galaxies

Mon, 01 Apr 2024 00:00:00 +0000

Gas-rich Systems - The chemical content of the gas-phase ISM as revealed through infrared emission lines

Mon, 25 Mar 2024 00:00:00 +0000

A departure from the mass-metallicity relation in merging galaxies due to an infall of metal-poor gas

Fri, 01 Mar 2024 00:00:00 +0000

Unveiling chemical enrichment in galaxies through infrared emission lines

Mon, 05 Feb 2024 00:00:00 +0000

JWST Data Masterclass

Tue, 12 Dec 2023 00:00:00 +0000

STARFORM 2023 - 2nd Severo Ochoa Advanced School on Star Formation

Mon, 27 Nov 2023 00:00:00 +0000

Experience

Tue, 24 Oct 2023 00:00:00 +0000

A MUSE/VLT spatially resolved study of the emission structure of Green Pea galaxies

Fri, 01 Sep 2023 00:00:00 +0000

Unveiling chemical enrichment in galaxies through infrared emission lines

Thu, 15 Jun 2023 00:00:00 +0000

Assessing model-based carbon and oxygen abundance derivation from ultraviolet emission lines in AGNs

Mon, 01 May 2023 00:00:00 +0000

Measuring chemical abundances in AGN from infrared nebular lines: HII-CHI-Mistry-IR for AGN

Mon, 01 May 2023 00:00:00 +0000

The chemical content of the NLR as estimated from IR emission lines in AGNs

Mon, 30 Jan 2023 00:00:00 +0000

The chemical content of the Narrow Line Region as inferred from optical and infrared nebular emission lines

Mon, 09 Jan 2023 00:00:00 +0000

The softness diagram for MaNGA star-forming regions: diffuse ionized gas contamination or local HOLMES predominance?

Sun, 01 Jan 2023 00:00:00 +0000

Measuring chemical abundances in AGN from infrared nebular lines: HII-CHI-MISTRY-IR for AGN

Sat, 01 Oct 2022 00:00:00 +0000

Measuring chemical abundances in AGN from infrared nebular lines: HII-CHI-Mistry-IR for AGN

Fri, 01 Jul 2022 00:00:00 +0000

Metallicities and N/O abundances in star forming galaxies measured with infrared nebular lines

Fri, 01 Jul 2022 00:00:00 +0000

Interstellar Shock School

Sun, 12 Jun 2022 00:00:00 +0000

GALEVOL 2022 - IAA-CSIC Severo Ochoa Advanced School on Galaxy Evolution

Mon, 23 May 2022 00:00:00 +0000

Chemical abundances in the NLR of AGN based on IR emission lines

Wed, 18 May 2022 00:00:00 +0000

Chemistry and physical properties of the born-again planetary nebula HuBi 1

Sun, 01 May 2022 00:00:00 +0000

English for Academic Purposes

Mon, 14 Mar 2022 00:00:00 +0000

SOFIA Observations of Far-IR Fine-structure Lines in Galaxies to Measure Metallicity

Tue, 01 Feb 2022 00:00:00 +0000

Inteligencia Artifical en 360

Mon, 31 Jan 2022 00:00:00 +0000

STARFORM 2021 - Severo Ochoa Advanced School on Star Formation

Mon, 15 Nov 2021 00:00:00 +0000

Chemical abundances in the nuclear region of nearby galaxies from the Palomar Survey

Sun, 01 Aug 2021 00:00:00 +0000

International Summer School on the Interstellar Medium of Galaxies, from the Epoch of Reionization to the Milky Way

Mon, 12 Jul 2021 00:00:00 +0000

Chemical abundances in the nuclear region of nearby galaxies from the Palomar Survey

Mon, 24 May 2021 00:00:00 +0000

AGN-EHE

Mon, 01 Feb 2021 00:00:00 +0000

The aim of this collaboration is to bring together four groups of researchers with proved expertises and skills and with important national and international collaborations in different areas of the AGN phenomenon - covering a large range of intrinsic luminosities (from LINERs to QSOs), low to high accretion rates, distances close to the BH to galactic and cluster scales, low to high redshift - and from the perspective of both statistical and/or detailed analysis of observational data and numerical simulations. The topics we plan to address include how SMBHs grow, the connection between BH low and high accretion systems, the role played by obscuration in AGNs, and the study of star formation and nuclear activity in lenticular galaxies, and AGN feeding and feedback. The final goal is consolidating a scientifically strong group to address the challenges in the research frontier of AGNs and their connection with galaxy formation and evolution, where we expect to go on making significant contributions.

Estallidos

Mon, 01 Feb 2021 00:00:00 +0000

ESTALLIDOS is a coordinated project between several Spanish research centers to study the formation and evolution of outbursts of star formation.

The project is aimed at studying massive starbursts and their impact on galaxies, using both observational and theoretical tools. We observe starbursts and model the physical processes that are involved, paying particular attention to the feedback on the surroundings that quenches or stimulates the formation of successive generations of stars.

The project began in December 2001, in a collaboration among astronomers from the LAEFF (Madrid; currently integrated into the CAB ), the VILSPA (Madrid, currently ESAC ), the IAA (Granada), and the IAC (Canary Islands) funded by the Spanish Plan Nacional de Astronomía y Astrofísica ( AYA2001-3939-C03 ). From the beginning, the project has involved the participation of researchers from all over the world. In later editions, UAM , and, posteriorly CIEMAT (Madrid) joined the project. Details about the different funded projects can be found in the Organization Chart and Operations item in the left menu.

Now we are in the eighth edition: ESTALLIDOS 8 : Las diversas facetas de la formación estelar en el Universo (PID2022-136598NB-C31, C32 and C33) which is coordinated by the IAC node.

The project is organized and coordinated through workshops in which ongoing work is discussed and new results are presented. They are attended by a significant part of the Estallidos community ( currently around 60 ) and help to maintain strong scientific bounds and close collaborations.

SOMACHINE 2020 - IAA-CSIC Severo Ochoa School on Machine Learning, Big Data, and Deep Learning in Astronomy

Mon, 23 Nov 2020 00:00:00 +0000

The Dark Sky as a Scientific, Cultural, Environmental and Touristic Resource

Tue, 06 Oct 2020 00:00:00 +0000

HII-CHI-Mistry

Tue, 01 Sep 2020 00:00:00 +0000

HII-CHI-Mistry is a collection of python subroutines aimed at the calculation of chemical abundances and physical properties using emission line fluxes from ionised gaseous nebulae.

Chemical abundances in nearby galaxies from the Palomar Survey

Mon, 13 Jul 2020 00:00:00 +0000

Borja Pérez-Díaz | Borja Perez-Diaz | Doctor in Astrophysics

The NUVOLOSO project. Understanding high-z galaxies with low- and medium-resolution observations

Beyond the [OIII]4363 auroral line: [NeIII]3868 as a direct tracer of the electron temperature

The early maturity of high-redshift galaxies: Insights from sSFR, M/L, and SFHs at z ∼ 7─14

From "The Cliff" to "Virgil": Mapping the Spectral Diversity of Little Red Dots with JWST/NIRSpec

Not so isolated: Green Pea galaxies in overdense environments revealed by VLT/MUSE

Investigating ionising sources and the complex interstellar medium of GHZ2 at z = 12.3

Chemical enrichment in LINERs from MaNGA: II. Characterizing the shape of the radial metallicity gradients

Andromeda's tenuous veil: A likely Milky Way nebula projected toward M31

Astrophysics and Cosmology

TRICEPS - Tracing Rotation with Ionized Carbon in Early Primeval Systems

Far-IR Emission Lines; Revealing the True Chemical Enrichment History

Sulfur and Nitrogen; Key Players in the Chemical Enrichment Story

Sulphur abundances in star-forming regions from optical emission lines: A new approach based on photoionization models consistent with the direct method

GALEVOL 2025 - 2nd IAA-CSIC Severo Ochoa Advanced School on Galaxy Evolution

A deep-dive beneath the mass-metallicity relation: Unveiling chemical enrichment in galaxies through infrared emission lines

The Andromeda Veil: Combining MEGARA and JAST80 to Probe the Nature of a Faint Nebula Towards M31

Exploring the hardness of the ionizing radiation with the infrared softness diagram: II. Bimodal distributions in both the ionizing continuum slope and the excitation in active galactic nuclei

Chemical enrichment in LINERs from MaNGA: I. Tracing the nuclear abundances of oxygen and nitrogen in LINERs with varied ionizing sources

Unveiling chemical enrichment in galaxies through infrared emission lines

Projects

Unveiling chemical enrichment in galaxies through infrared emission lines

Chemical abundances and deviations from the solar S/O ratio in the gas-phase interstellar medium of galaxies based on infrared emission lines

Contribution of very massive stars to the sulfur abundance in star-forming galaxies: Role of pair-instability supernovae

Exploring the hardness of the ionising radiation with the infrared softness diagram. I. Similar effective temperature scales for starbursts and (ultra)luminous infrared galaxies

Gas-rich Systems - The chemical content of the gas-phase ISM as revealed through infrared emission lines

A departure from the mass-metallicity relation in merging galaxies due to an infall of metal-poor gas

Unveiling chemical enrichment in galaxies through infrared emission lines

JWST Data Masterclass

STARFORM 2023 - 2nd Severo Ochoa Advanced School on Star Formation

Experience

A MUSE/VLT spatially resolved study of the emission structure of Green Pea galaxies

Unveiling chemical enrichment in galaxies through infrared emission lines

Assessing model-based carbon and oxygen abundance derivation from ultraviolet emission lines in AGNs

Measuring chemical abundances in AGN from infrared nebular lines: HII-CHI-Mistry-IR for AGN

The chemical content of the NLR as estimated from IR emission lines in AGNs

The chemical content of the Narrow Line Region as inferred from optical and infrared nebular emission lines

The softness diagram for MaNGA star-forming regions: diffuse ionized gas contamination or local HOLMES predominance?

Measuring chemical abundances in AGN from infrared nebular lines: HII-CHI-MISTRY-IR for AGN

Measuring chemical abundances in AGN from infrared nebular lines: HII-CHI-Mistry-IR for AGN

Metallicities and N/O abundances in star forming galaxies measured with infrared nebular lines

Interstellar Shock School

GALEVOL 2022 - IAA-CSIC Severo Ochoa Advanced School on Galaxy Evolution

Chemical abundances in the NLR of AGN based on IR emission lines

Chemistry and physical properties of the born-again planetary nebula HuBi 1

English for Academic Purposes

SOFIA Observations of Far-IR Fine-structure Lines in Galaxies to Measure Metallicity

Inteligencia Artifical en 360

STARFORM 2021 - Severo Ochoa Advanced School on Star Formation

Chemical abundances in the nuclear region of nearby galaxies from the Palomar Survey

International Summer School on the Interstellar Medium of Galaxies, from the Epoch of Reionization to the Milky Way

Chemical abundances in the nuclear region of nearby galaxies from the Palomar Survey

AGN-EHE

Estallidos

SOMACHINE 2020 - ​IAA-CSIC Severo Ochoa School on Machine Learning, Big Data, and Deep Learning in Astronomy

The Dark Sky as a Scientific, Cultural, Environmental and Touristic Resource

HII-CHI-Mistry

Chemical abundances in nearby galaxies from the Palomar Survey

SOMACHINE 2020 - IAA-CSIC Severo Ochoa School on Machine Learning, Big Data, and Deep Learning in Astronomy