Determination of the primordial helium abundance based on NGC 346, an H ii region of the small magellanic cloud M Valerdi, A Peimbert, M Peimbert, A Sixtos The Astrophysical Journal 876 (2), 98, 2019 | 65 | 2019 |
Chemical abundances in seven metal-poor H ii regions and a determination of the primordial helium abundance M Valerdi, A Peimbert, M Peimbert Monthly Notices of the Royal Astronomical Society 505 (3), 3624-3634, 2021 | 27 | 2021 |
Chemical abundances in Seyfert galaxies–IX. Helium abundance estimates OL Dors, M Valerdi, P Freitas-Lemes, AC Krabbe, RA Riffel, EB Amôres, ... Monthly Notices of the Royal Astronomical Society 514 (4), 5506-5527, 2022 | 16 | 2022 |
Helium abundances and its radial gradient from the spectra of H ii regions and ring nebulae of the Milky Way JE Méndez-Delgado, C Esteban, J García-Rojas, KZ Arellano-Córdova, ... Monthly Notices of the Royal Astronomical Society 496 (3), 2726-2742, 2020 | 16 | 2020 |
Oxygen abundances in the narrow line regions of Seyfert galaxies and the metallicity–luminosity relation M Armah, R Riffel, OL Dors, K Oh, MJ Koss, C Ricci, B Trakhtenbrot, ... Monthly Notices of the Royal Astronomical Society 520 (2), 1687-1703, 2023 | 14 | 2023 |
Chemical abundances in Seyfert galaxies–X. Sulphur abundance estimates OL Dors, M Valerdi, RA Riffel, R Riffel, MV Cardaci, GF Hägele, M Armah, ... Monthly Notices of the Royal Astronomical Society 521 (2), 1969-1987, 2023 | 13 | 2023 |
Environmental Effects on Galaxy Evolution. II. Quantifying the Tidal Features in NIR Images of the Cluster Abell 85 Y Venkatapathy, H Bravo-Alfaro, YD Mayya, C Lobo, F Durret, V Gamez, ... The Astronomical Journal 154 (6), 227, 2017 | 10 | 2017 |
An empirical calibration of the helium abundance in H ii regions based in literature and CALIFA survey data M Valerdi, JK Barrera-Ballesteros, SF Sánchez, C Espinosa-Ponce, ... Monthly Notices of the Royal Astronomical Society 505 (4), 5460-5467, 2021 | 8 | 2021 |
Metal-THINGS: Association and optical characterization of supernova remnants with HI holes in NGC 6946 MA Lara-López, LS Pilyugin, J Zaragoza-Cardiel, IA Zinchenko, ... Astronomy & Astrophysics 669, A25, 2023 | 6 | 2023 |
2D surface brightness modelling of large 2MASS galaxies–I: photometry and structural parameters E Ríos-López, C Añorve, HJ Ibarra-Medel, O López-Cruz, ... Monthly Notices of the Royal Astronomical Society 507 (4), 5952-5973, 2021 | 5 | 2021 |
CoSHA: Code for Stellar Properties Heuristic Assignment—for the MaStar Stellar Library A Mejía-Narváez, G Bruzual, SF Sánchez, L Carigi, J Barrera-Ballesteros, ... The Astrophysical Journal Supplement Series 261 (2), 20, 2022 | 4 | 2022 |
Metal-THINGS: a panchromatic analysis of the local scaling relationships of the dwarf irregular galaxy NGC 1569 LE Garduño, J Zaragoza-Cardiel, MA Lara-López, IA Zinchenko, ... Monthly Notices of the Royal Astronomical Society 526 (2), 2479-2499, 2023 | 3 | 2023 |
One hundred optical emission lines of molecular hydrogen from a low-metallicity photodissociation region WJ Henney, M Valerdi Monthly Notices of the Royal Astronomical Society 529 (2), 1723-1751, 2024 | 2 | 2024 |
Direct estimates of nitrogen abundance for Seyfert 2 nuclei OL Dors, MV Cardaci, GF Hägele, M Valerdi, GS Ilha, CB Oliveira, ... arXiv preprint arXiv:2405.13906, 2024 | | 2024 |
One hundred new unidentified optical emission lines from a low-metallicity photodissociation region WJ Henney, M Valerdi arXiv e-prints, arXiv: 2306.00894, 2023 | | 2023 |
Chemical abundances in Seyfert galaxies: X. sulphur abundance estimates OL Dors Júnior, M Valerdi, RA Riffel, R Riffel, MV Cardaci, GF Hägelle, ... Monthly notices of the royal astronomical society. Oxford. Vol. 521, no. 2 …, 2023 | | 2023 |
Metal-THINGS: Association and optical characterization of supernova remnants with HI holes in NGC 6946 L López, LS Pilyugin, J Zaragoza Cardiel, IA Zinchenko, O López Cruz, ... EDP Sciences, 2023 | | 2023 |
Chemical abundances in Seyfert galaxies: IX. Helium abundance estimates OL Dors Júnior, M Valerdi, P Freitas-Lemes, AC Krabbe, RA Riffel, ... Monthly notices of the royal astronomical society. Oxford. Vol. 514, no. 4 …, 2022 | | 2022 |
Helium abundance in the catalog of HII regions in the CALIFA survey M Valerdi, J Barrera-Ballesteros, S Sánchez XIV. 0 Scientific Meeting (virtual) of the Spanish Astronomical Society, 89, 2020 | | 2020 |
Determination of Chemical Abundances in HII Regions and their Applications for Primordial Helium M Valerdi American Astronomical Society Meeting Abstracts# 235 235, 331.02, 2020 | | 2020 |