IRyA, UNAM

Instituto de Radioastronomía y Astrofísica
IRyA
Universidad Nacional Autónoma de México

Grupo de Estrellas Evolucionadas

Utilizamos observaciones a multifrecuencias, modelos teóricos y simulaciones numéricas para estudiar los diversos fenómenos asociados a las etapas finales de las estrellas. Nuestros estudios abarcan las estrellas AGB y supergigantes rojas, las nebulosas planetarias y nebulosas Wolf-Rayet, las novas y remanentes de supernova, tanto en nuestra Galaxia como en galaxias externas.

Grupo de Estrellas Evolucionadas

Utilizamos observaciones a multifrecuencias, modelos teóricos y simulaciones numéricas para estudiar los diversos fenómenos asociados a las etapas finales de las estrellas. Nuestros estudios abarcan las estrellas AGB y supergigantes rojas, las nebulosas planetarias y nebulosas Wolf-Rayet, las novas y remanentes de supernova, tanto en nuestra Galaxia como en galaxias externas.

Contacto

Publicaciones arbitradas recientes

1. Geometric Correction for Wind Accretion in Binary Systems
Tejeda, Emilio; Toalá, Jesús A. 2025. 2025ApJ...980..226T
2. VLT VIMOS integral field spectroscopy of the nova remnant FH Ser
Guerrero, M. A.; Santamaría, E.; Takeda, L. et al. 2025. 2025A&A...694A.144G
3. Confirmation of the planetary nebula nature of HaTr 5: Not a remnant of Nova Sco 1437
Guerrero, M. A.; Santamaría, E.; Liberato, G. et al. 2025. 2025A&A...694A.105G
4. Y Gem, a symbiotic star outshone by its asymptotic giant branch primary component
Guerrero, M. A.; Vasquez-Torres, D. A.; Rodríguez-González, J. B. et al. 2025. 2025A&A...693A.203G
5. Accretion onto WD 2226-210, the central star of the Helix Nebula
Estrada-Dorado, S.; Guerrero, M. A.; Toalá, J. A. et al. 2025. 2025MNRAS.536.2477E
6. The impact of periastron passage on the X-ray and optical properties of the Symbiotic System R Aquarii
Vasquez-Torres, D. A.; Toalá, J. A.; Sacchi, A. et al. 2024. 2024MNRAS.535.2724V
7. Asymptotic giant branch stars in the eROSITA-DE eRASS1 catalog
Guerrero, M. A.; Montez, R.; Ortiz, R. et al. 2024. 2024A&A...689A..62G
8. Non-thermal radio emission in Sakurai's Object
Hajduk, M.; van Hoof, P. A. M.; Zijlstra, A. A. et al. 2024. 2024A&A...688L..21H
9. Shaping the nebula around the symbiotic system R Aquarii
Santamaría, E.; Toalá, J. A.; Liimets, T. et al. 2024. 2024MNRAS.532.2511S
10. The X-ray rise and fall of the symbiotic recurrent nova system T CrB
Toalá, Jesús A.; González-Martín, Omaira; Sacchi, Andrea et al. 2024. 2024MNRAS.532.1421T
11. Peering into the Wolf-Rayet phenomenon through [WO] and [WC] stars
Toalá, Jesús A.; Todt, Helge; Sander, Andreas A. C. 2024. 2024MNRAS.531.2422T
12. 3D physical structure and angular expansion of the remnant of the recurrent nova T Pyx
Santamaría, E.; Toalá, J. A.; Guerrero, M. A. et al. 2024. 2024MNRAS.530.4531S
13. Optical tomography of the born-again ejecta of A 58
Montoro-Molina, B.; Tafoya, D.; Guerrero, M. A. et al. 2024. 2024A&A...684A.107M
14. Reflection physics in X-ray-emitting symbiotic stars
Toalá, Jesús A. 2024. 2024MNRAS.528..987T
15. H<SUB>2</SUB> molecular gas in the old planetary nebula NGC 3587
Ramos-Larios, G.; Guerrero, M. A.; Toalá, J. A. et al. 2024. 2024MNRAS.52710123R
16. Synthetic X-ray emission from white dwarf accreting planetary material
Estrada-Dorado, S.; Lora, V.; Toalá, J. A. et al. 2024. 2024MNRAS.527.6158E
17. A comprehensive hydrodynamical study of SB DEM L50: understanding off-centre SNe and soft X-ray luminosity
Orozco-Duarte, Rogelio; García-Segura, Guillermo; Wofford, Aida et al. 2023. 2023MNRAS.526.5919O
18. Spatially resolved spectroscopic investigation of the born-again planetary nebula A 78
Montoro-Molina, B.; Guerrero, M. A.; Toalá, J. A. 2023. 2023MNRAS.526.4359M
19. The heart of Sakurai's object revealed by ALMA
Tafoya, Daniel; van Hoof, Peter A. M.; Toalá, Jesús A. et al. 2023. 2023A&A...677L...8T
20. NGC 2022, a case study of a multiple-shell planetary nebula
Montoro-Molina, B.; Guerrero, M. A.; Santamaría, E. et al. 2023. 2023MNRAS.524.1601M
21. Peering into the central region of a nano-quasar: XMM-Newton and Chandra views of the CH Cyg symbiotic system
Toalá, J. A.; González-Martín, O.; Karovska, M. et al. 2023. 2023MNRAS.522.6102T
22. Emerging planetary nebulae within 3D spiral patterns
Lora, V.; Toalá, J. A.; González-Carbajal, J. I. et al. 2023. 2023MNRAS.522.3337L
23. An XMM-Newton View of the Symbiotic Stars HM Sge, NQ Gem, and PU Vul
Toalá, Jesús A.; Botello, Marissa K.; Sabin, Laurence 2023. 2023ApJ...948...14T
24. XMM-Newton Detection of X-Ray Emission from the Metal-polluted White Dwarf G 29-38
Estrada-Dorado, S.; Guerrero, M. A.; Toalá, J. A. et al. 2023. 2023ApJ...944L..46E
25. The messy death of a multiple star system and the resulting planetary nebula as observed by JWST
De Marco, Orsola; Akashi, Muhammad; Akras, Stavros et al. 2022. 2022NatAs...6.1421D
26. Planetary nebulae with Wolf-Rayet-type central stars - IV. NGC 1501 and its mixing layer
Rubio, G.; Toalá, J. A.; Todt, H. et al. 2022. 2022MNRAS.517.5166R
27. QU Vul: An integral field spectroscopy case study of a nova shell
Santamaría, E.; Guerrero, M. A.; Toalá, J. A. et al. 2022. 2022MNRAS.517.2567S
28. Adjusting the bow-tie: a morpho-kinematic study of NGC 40
Rodríguez-González, J. B.; Toalá, J. A.; Sabin, L. et al. 2022. 2022MNRAS.515.1557R
29. Catching the Butterfly and the Homunculus of η Carinae with ALMA
Zapata, Luis A.; Loinard, Laurent; Fernández-López, Manuel et al. 2022. 2022ApJ...935...76Z
30. Common envelope evolution in born-again planetary nebulae - Shaping the H-deficient ejecta of A 30
Rodríguez-González, J. B.; Santamaría, E.; Toalá, J. A. et al. 2022. 2022MNRAS.514.4794R
31. Multiple variability time-scales of the early nitrogen-rich Wolf-Rayet star WR 7
Toalá, J. A.; Bowman, D. M.; Van Reeth, T. et al. 2022. 2022MNRAS.514.2269T
32. Spectral Variability of the Born-again Ejecta in A 58
Montoro-Molina, Borja; Guerrero, Martín A.; Toalá, Jesús A. et al. 2022. 2022ApJ...934...18M
33. And then they were two: Detection of non-thermal radio emission from the bow shocks of two runaway stars
Moutzouri, M.; Mackey, J.; Carrasco-González, C. et al. 2022. 2022A&A...663A..80M
34. The Common Envelope Origins of the Fast Jet in the Planetary Nebula M 3-38
Rechy-García, J. S.; Toalá, J. A.; Guerrero, M. A. et al. 2022. 2022ApJ...933L..24R
35. 3D mapping of the Wolf-Rayet nebula M 1-67: clues for post-common envelope evolution in massive stars
Zavala, S.; Toalá, J. A.; Santamaría, E. et al. 2022. 2022MNRAS.513.3317Z
36. Rings and arcs around evolved stars - III. Physical conditions of the ring-like structures in the planetary nebula IC 4406 revealed by MUSE
Ramos-Larios, G.; Toalá, J. A.; Rodríguez-González, J. B. et al. 2022. 2022MNRAS.513.2862R
37. Exploitation of the IPHAS to Investigate Planetary Nebulae
Sabin, Laurence; Toalá, Jesús A.; Ramos-Larios, Gerardo et al. 2022. 2022FrASS...9.7904S
38. The Nearby Evolved Stars Survey II: Constructing a volume-limited sample and first results from the James Clerk Maxwell Telescope
Scicluna, P.; Kemper, F.; McDonald, I. et al. 2022. 2022MNRAS.512.1091S
39. Chemistry and physical properties of the born-again planetary nebula HuBi 1
Montoro-Molina, B.; Guerrero, M. A.; Pérez-Díaz, B. et al. 2022. 2022MNRAS.512.4003M
40. Spatiokinematic models of five nova remnants: correlations between nova shell axial ratio, expansion velocity, and speed class
Santamaría, E.; Guerrero, M. A.; Zavala, S. et al. 2022. 2022MNRAS.512.2003S
41. An XMM-Newton EPIC X-Ray View of the Symbiotic Star R Aquarii
Toalá, Jesús A.; Sabin, Laurence; Guerrero, Martín A. et al. 2022. 2022ApJ...927L..20T
42. First Images of the Molecular Gas around a Born-again Star Revealed by ALMA
Tafoya, Daniel; Toalá, Jesús A.; Unnikrishnan, Ramlal et al. 2022. 2022ApJ...925L...4T
43. Planetary nebulae with Wolf-Rayet-type central stars - III. A detailed view of NGC 6905 and its central star
Gómez-González, V. M. A.; Rubio, G.; Toalá, J. A. et al. 2022. 2022MNRAS.509..974G
44. Planetary nebulae with Wolf-Rayet-type central stars - II. Dissecting the compact planetary nebula M 2-31 with GTC MEGARA
Rechy-García, J. S.; Toalá, J. A.; Cazzoli, S. et al. 2021. 2021MNRAS.508.2254R
45. First deep images catalogue of extended IPHAS PNe
Sabin, L.; Guerrero, M. A.; Ramos-Larios, G. et al. 2021. 2021MNRAS.508.1599S
46. Dust in RCW 58: Clues to common envelope channel formation?
Jiménez-Hernández, P.; Arthur, S. J.; Toalá, J. A. et al. 2021. 2021MNRAS.507.3030J
47. Formation and fate of the born-again planetary nebula HuBi 1
Toalá, J. A.; Lora, V.; Montoro-Molina, B. et al. 2021. 2021MNRAS.505.3883T
48. Carbon dust in the evolved born-again planetary nebulae A 30 and A 78
Toalá, J. A.; Jiménez-Hernández, P.; Rodríguez-González, J. B. et al. 2021. 2021MNRAS.503.1543T
49. Hard X-Ray Emission Associated with White Dwarfs. IV. Signs of Accretion from Substellar Companions
Chu, You-Hua; Toalá, Jesús A.; Guerrero, Martín A. et al. 2021. 2021ApJ...910..119C
50. X-ray observations of the nova shell IPHASX J210204.7+471015
Toalá, J. A.; Rubio, G.; Santamaría, E. et al. 2021. 2021MNRAS.502.4658T
51. Tomography of the Unique Ongoing Jet in the Planetary Nebula NGC 2392
Guerrero, M. A.; Cazzoli, S.; Rechy-García, J. S. et al. 2021. 2021ApJ...909...44G
52. Detailed studies of IPHAS sources - I. The disrupted late bipolar IPHASX J193718.6+202102
Sabin, L.; Guerrero, M. A.; Zavala, S. et al. 2021. 2021MNRAS.501.3582S
53. Detailed studies of IPHAS sources - III. The highly extinguished bipolar planetary nebula IPHASX J191104.8+060845
Rodríguez-González, J. B.; Sabin, L.; Toalá, J. A. et al. 2021. 2021MNRAS.501.3605R
54. Wolf-Rayet stars in the Antennae unveiled by MUSE
Gómez-González, V. M. A.; Mayya, Y. D.; Toalá, J. A. et al. 2021. 2021MNRAS.500.2076G
55. Discovery of a Fast-expanding Shell in the Inside-out Born-again Planetary Nebula HuBi 1 through High-dispersion Integral Field Spectroscopy
Rechy-García, J. S.; Guerrero, M. A.; Santamaría, E. et al. 2020. 2020ApJ...903L...4R
56. Unveiling the stellar origin of the Wolf-Rayet nebula NGC 6888 through infrared observations
Rubio, G.; Toalá, J. A.; Jiménez-Hernández, P. et al. 2020. 2020MNRAS.499..415R
57. Dust in the Wolf-Rayet nebula M 1-67
Jiménez-Hernández, P.; Arthur, S. J.; Toalá, J. A. 2020. 2020MNRAS.497.4128J
58. A Radio Pinwheel Emanating from WR 147
Rodríguez, Luis F.; Arthur, Jane; Montes, Gabriela et al. 2020. 2020ApJ...900L...3R
59. Planetary nebulae with Wolf-Rayet-type central stars - I. The case of the high-excitation NGC 2371
Gómez-González, V. M. A.; Toalá, J. A.; Guerrero, M. A. et al. 2020. 2020MNRAS.496..959G
60. Extended X-ray emission from the classic nova DQ Her - on the possible presence of a magnetized jet
Toalá, J. A.; Guerrero, M. A.; Santamaría, E. et al. 2020. 2020MNRAS.495.4372T
61. The Bubble Nebula NGC 7635 - testing the wind-blown bubble theory
Toalá, J. A.; Guerrero, M. A.; Todt, H. et al. 2020. 2020MNRAS.495.3041T
62. Rings and arcs around evolved stars - II. The Carbon Star AFGL 3068 and the Planetary Nebulae NGC 6543, NGC 7009, and NGC 7027
Guerrero, M. A.; Ramos-Larios, G.; Toalá, J. A. et al. 2020. 2020MNRAS.495.2234G
63. Chandra observations of the planetary nebula IC 4593
Toalá, J. A.; Guerrero, M. A.; Bianchi, L. et al. 2020. 2020MNRAS.494.3784T
64. Wolf-Rayet stars in M 81 using GTC/OSIRIS: seven new detections, analysis, and classification of the full sample
Gómez-González, V. M. A.; Mayya, Y. D.; Rosa-González, D. et al. 2020. 2020MNRAS.493.3879G
65. Angular Expansion of Nova Shells
Santamaría, E.; Guerrero, M. A.; Ramos-Larios, G. et al. 2020. 2020ApJ...892...60S
66. ALMA Observations of the Extraordinary Carina Pillars: HH 901/902
Cortes-Rangel, Geovanni; Zapata, Luis A.; Toalá, Jesús A. et al. 2020. 2020AJ....159...62C
67. Kinematical investigation of possible fast collimated outflows in twelve planetary nebulae
Rechy-García, J. S.; Guerrero, M. A.; Duarte Puertas, S. et al. 2020. 2020MNRAS.492.1957R
68. A Carbon-rich Hot Bubble in the Planetary Nebula NGC 5189
Toalá, Jesús A.; Montez, Rodolfo, Jr.; Karovska, Margarita 2019. 2019ApJ...886...30T
69. Dissecting the Hot Bubbles in LMC-N57 with XMM-Newton
Ramírez-Ballinas, Isidro; Reyes-Iturbide, Jorge; Toalá, Jesús A. et al. 2019. 2019ApJ...885..116R
70. The nearby evolved stars survey - I. JCMT/SCUBA-2 submillimetre detection of the detached shell of U Antliae
Dharmawardena, Thavisha E.; Kemper, Francisca; Srinivasan, Sundar et al. 2019. 2019MNRAS.489.3218D
71. Variable Hard X-Ray Emission from the Central Star of the Eskimo Nebula
Guerrero, Martín A.; Toalá, Jesús A.; Chu, You-Hua 2019. 2019ApJ...884..134G
72. Hidden IR structures in NGC 40: signpost of an ancient born-again event
Toalá, J. A.; Ramos-Larios, G.; Guerrero, M. A. et al. 2019. 2019MNRAS.485.3360T
73. Measuring the expansion and age of the nova shell IPHASX J210204.7 + 471015
Santamaría, E.; Guerrero, M. A.; Ramos-Larios, G. et al. 2019. 2019MNRAS.483.3773S
74. UV Monochromatic Imaging of the Protoplanetary Nebula Hen 3-1475 Using HST STIS
Fang, Xuan; Guerrero, Martín A.; Gómez de Castro, Ana I. et al. 2018. 2018Galax...6..141F
75. On the Apparent Absence of Wolf-Rayet+Neutron Star Systems: The Curious Case of WR124
Toalá, J. A.; Oskinova, L. M.; Hamann, W. -R. et al. 2018. 2018ApJ...869L..11T
76. HST STIS UV Spectroscopic Observations of the Protoplanetary Nebula Hen3-1475
Fang, Xuan; Gómez de Castro, Ana I.; Toalá, Jesús A. et al. 2018. 2018ApJ...865L..23F
77. Simulations of the Formation and X-Ray Emission from Hot Bubbles in Planetary Nebulae
Toalá, Jesus A.; Arthur, S. Jane 2018. 2018Galax...6...80T
78. On the X-ray temperature of hot gas in diffuse nebulae
Toalá, J. A.; Arthur, S. J. 2018. 2018MNRAS.478.1218T
79. Hot Gas in the Wolf-Rayet Nebula NGC 3199
Toalá, J. A.; Marston, A. P.; Guerrero, M. A. et al. 2017. 2017ApJ...846...76T
80. On the Absence of Non-thermal X-Ray Emission around Runaway O Stars
Toalá, J. A.; Oskinova, L. M.; Ignace, R. 2017. 2017ApJ...838L..19T
81. (Sub)millimeter emission lines of molecules in born-again stars
Tafoya, D.; Toalá, J. A.; Vlemmings, W. H. T. et al. 2017. 2017A&A...600A..23T
82. Revealing the Location of the Mixing Layer in a Hot Bubble
Guerrero, M. A.; Fang, X.; Chu, Y. H. et al. 2017. 2017hsa9.conf..389G
83. Erratum: Formation and X-ray emission from hot bubbles in planetary nebulae - I. Hot bubble formation
Toalá, J. A.; Arthur, S. J. 2017. 2017MNRAS.464..178T
84. Formation and X-ray emission from hot bubbles in planetary nebulae - II. Hot bubble X-ray emission
Toalá, J. A.; Arthur, S. J. 2016. 2016MNRAS.463.4438T
85. Rings and arcs around evolved stars - I. Fingerprints of the last gasps in the formation process of planetary nebulae
Ramos-Larios, G.; Santamaría, E.; Guerrero, M. A. et al. 2016. 2016MNRAS.462..610R
86. Spitzer mid-infrared spectroscopic observations of planetary nebulae
Mata, H.; Ramos-Larios, G.; Guerrero, M. A. et al. 2016. 2016MNRAS.459..841M
87. HST STIS Observations of the Mixing Layer in the Cat’s Eye Nebula
Fang, Xuan; Guerrero, Martín A.; Toalá, Jesús A. et al. 2016. 2016ApJ...822L..19F
88. X-Ray Observations of Bow Shocks around Runaway O Stars. The Case of ζ Oph and BD+43°3654
Toalá, J. A.; Oskinova, L. M.; González-Galán, A. et al. 2016. 2016ApJ...821...79T
89. X-ray emission from the Wolf-Rayet bubble NGC 6888 - II. XMM-Newton EPIC observations
Toalá, J. A.; Guerrero, M. A.; Chu, Y. -H. et al. 2016. 2016MNRAS.456.4305T
90. WISE morphological study of Wolf-Rayet nebulae
Toalá, J. A.; Guerrero, M. A.; Ramos-Larios, G. et al. 2015. 2015A&A...578A..66T
91. The Chandra Planetary Nebula Survey (ChanPlaNS). III. X-Ray Emission from the Central Stars of Planetary Nebulae
Montez, R., Jr.; Kastner, J. H.; Balick, B. et al. 2015. 2015ApJ...800....8M
92. Inverse Hubble flows in molecular clouds
Toalá, Jesús A.; Vázquez-Semadeni, Enrique; Colín, Pedro et al. 2015. 2015MNRAS.446.3725T
93. XMM-Newton RGS observations of the Cat's Eye Nebula
Guerrero, M. A.; Toalá, J. A.; Chu, Y. -H. et al. 2015. 2015A&A...574A...1G
94. On the diffuse X-ray emission from the Wolf-Rayet bubble NGC 2359
Toalá, J. A.; Guerrero, M. A.; Chu, Y. -H. et al. 2015. 2015MNRAS.446.1083T
95. The Born-again Planetary Nebula A78: An X-Ray Twin of A30
Toalá, J. A.; Guerrero, M. A.; Todt, H. et al. 2015. 2015ApJ...799...67T
96. Expansion of Hydrogen-poor Knots in the Born-again Planetary Nebulae A30 and A78
Fang, X.; Guerrero, M. A.; Marquez-Lugo, R. A. et al. 2014. 2014ApJ...797..100F
97. Formation and X-ray emission from hot bubbles in planetary nebulae - I. Hot bubble formation
Toalá, J. A.; Arthur, S. J. 2014. 2014MNRAS.443.3486T
98. The Chandra Planetary Nebula Survey (ChanPlaNS). II. X-Ray Emission from Compact Planetary Nebulae
Freeman, M.; Montez, R., Jr.; Kastner, J. H. et al. 2014. 2014ApJ...794...99F
99. X-Ray Emission from the Wolf-Rayet Bubble NGC 6888. I. Chandra ACIS-S Observations
Toalá, J. A.; Guerrero, M. A.; Gruendl, R. A. et al. 2014. 2014AJ....147...30T
100. Absence of hot gas within the Wolf-Rayet bubble around WR 16
Toalá, J. A.; Guerrero, M. A. 2013. 2013A&A...559A..52T
101. Unveiling shocks in planetary nebulae
Guerrero, Martín A.; Toalá, Jesús A.; Medina, Juan J. et al. 2013. 2013A&A...557A.121G
102. X-ray Emission from Wolf-Rayet Nebulae
Toalá, J. A.; Guerrero, M. A.; Chu, Y. -H. et al. 2013. 2013hsa7.conf..674T
103. Aspect Ratio Dependence of the Free-fall Time for Non-spherical Symmetries
Pon, Andy; Toalá, Jesús A.; Johnstone, Doug et al. 2012. 2012ApJ...756..145P
104. X-Ray Emission from the Wolf-Rayet Bubble S 308
Toalá, J. A.; Guerrero, M. A.; Chu, Y. -H. et al. 2012. 2012ApJ...755...77T
105. Rebirth of X-Ray Emission from the Born-again Planetary Nebula A30
Guerrero, M. A.; Ruiz, N.; Hamann, W. -R. et al. 2012. 2012ApJ...755..129G
106. The Free-fall Time of Finite Sheets and Filaments
Toalá, Jesús A.; Vázquez-Semadeni, Enrique; Gómez, Gilberto C. 2012. 2012ApJ...744..190T
107. Radiation-hydrodynamic Models of the Evolving Circumstellar Medium around Massive Stars
Toalá, J. A.; Arthur, S. J. 2011. 2011ApJ...737..100T
108. 3-D Radiative Transfer Modeling of Structured Winds in Massive Hot Stars with Wind3D
Lobel, A.; Toalá, J. A.; Blomme, R. 2011. 2011BSRSL..80...42L