An estimate of the time variation of the O/H radial gradient from planetary nebulae WJ Maciel, RDD Costa, MMM Uchida Astronomy & Astrophysics 397 (2), 667-674, 2003 | 154 | 2003 |
The populations of planetary nebulae in the direction of the Galactic bulge-Chemical abundances and Wolf-Rayet central stars SK Gorny, G Stasińska, AV Escudero, RDD Costa Astronomy & Astrophysics 427 (1), 231-244, 2004 | 106 | 2004 |
Chemical abundances of planetary nebulae towards the Galactic anticenter RDD Costa, MMM Uchida, WJ Maciel Astronomy & Astrophysics 423 (1), 199-207, 2004 | 86 | 2004 |
New abundances of planetary nebulae in the Galactic Bulge AV Escudero, RDD Costa, WJ Maciel Astronomy & Astrophysics 414 (1), 211-221, 2004 | 71 | 2004 |
Steps toward determination of the size and structure of the broad-line region in active galactic nuclei. X. Variability of Fairall 9 from optical data M Santos-Lleó, E Chatzichristou, CM de Oliveira, C Winge, D Alloin, ... The Astrophysical Journal Supplement Series 112 (2), 271, 1997 | 70 | 1997 |
Chemical evolution models for spiral disks: the Milky Way, M 31, and M 33 MM Marcon-Uchida, F Matteucci, RDD Costa Astronomy & Astrophysics 520, A35, 2010 | 68 | 2010 |
An estimate of the time variation of the abundance gradient from planetary nebulae-II. Comparison with open clusters, cepheids and young objects WJ Maciel, LG Lago, RDD Costa Astronomy & Astrophysics 433 (1), 127-135, 2005 | 68 | 2005 |
Metallicity indices for multi-population models. II. Bulges of galaxies TP Idiart, JA de Freitas Pacheco, RDD Costa Astronomical Journal v. 112, p. 2541 112, 2541, 1996 | 57 | 1996 |
Abundances of recently discovered planetary nebulae towards the galactic bulge AV Escudero, RDD Costa Astronomy & Astrophysics 380 (1), 300-308, 2001 | 55 | 2001 |
New abundances of southern planetary nebulae RDD Costa, C Chiappini, WJ Maciel Astronomy and Astrophysics Supplement Series 116 (2), 249-256, 1996 | 54 | 1996 |
Chemical abundances of disk planetary nebulae JA de Freitas Pacheco, WJ Maciel, RDD Costa Astronomy and Astrophysics (ISSN 0004-6361), vol. 261, no. 2, p. 579-588 …, 1992 | 53 | 1992 |
The role of the Galactic bar in the chemical evolution of the Milky Way O Cavichia, M Mollá, RDD Costa, WJ Maciel Monthly Notices of the Royal Astronomical Society 437 (4), 3688-3701, 2014 | 50 | 2014 |
Abundances of southern Type I planetary nebulae JA de Freitas Pacheco, WJ Maciel, RDD Costa, B Barbuy Astronomy and Astrophysics (ISSN 0004-6361), vol. 250, no. 1, Oct. 1991, p …, 1991 | 49 | 1991 |
Chemical evolution of the Small Magellanic Cloud based on planetary nebulae TP Idiart, WJ Maciel, RDD Costa Astronomy & Astrophysics 472 (1), 101-110, 2007 | 43 | 2007 |
The time evolution of the Milky Way’s oxygen abundance gradient M Mollá, ÁI Díaz, O Cavichia, BK Gibson, WJ Maciel, RDD Costa, ... Monthly Notices of the Royal Astronomical Society 482 (3), 3071-3088, 2019 | 42 | 2019 |
Discovery in IC10 of the farthest known symbiotic star DR Gonçalves, L Magrini, U Munari, RLM Corradi, RDD Costa Monthly Notices of the Royal Astronomical Society: Letters 391 (1), L84-L87, 2008 | 39 | 2008 |
Metallicity indices for multipopulation models. I. The galactic bulge TP Idiart, JA de Freitas Pacheco, RDD Costa Astronomical Journal v. 111, p. 1169 111, 1169, 1996 | 39 | 1996 |
Nebular abundances of southern symbiotic stars GJM Luna, RDD Costa Astronomy & Astrophysics 435 (3), 1087-1097, 2005 | 38 | 2005 |
Planetary nebulae in the inner Milky Way: new abundances O Cavichia, RDD Costa, WJ Maciel Revista mexicana de astronomía y astrofísica 46 (1), 159-177, 2010 | 35 | 2010 |
Abundance gradients in the galactic disk: Space and time variations WJ Maciel, RDD Costa arXiv preprint arXiv:0806.3443, 2008 | 34 | 2008 |