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First JWST/NIRSpec Spectroscopy of O Stars in the Small Magellanic Cloud
Armin Mang Román, Peter Zeidler, Wolf-Rainer Hamann, Lidia M. Oskinova, M. J. Rickard, S. Reyero Serantes, H. Todt, J. S. Gallagher, D. Massa, D. Pauli, V. Ramachandran, E. Sabbi and A. A. C. Sander The Astrophysical Journal Letters 984(2) L49 (2025) https://doi.org/10.3847/2041-8213/adcc22
Extremely iron-poor O-type stars in the Magellanic Bridge
E. C. Schösser, V. Ramachandran, A. A. C. Sander, J. S. Gallagher, M. Bernini-Peron, G. González-Torà, J. Josiek, R. R. Lefever, W.-R. Hamann and L. M. Oskinova Astronomy & Astrophysics 696 L3 (2025) https://doi.org/10.1051/0004-6361/202554027
Structure formation in O-type stars and Wolf–Rayet stars
X-Shooting ULLYSES: Massive stars at low metallicity
V. M. A. Gómez-González, L. M. Oskinova, W.-R. Hamann, H. Todt, D. Pauli, S. Reyero Serantes, M. Bernini-Peron, A. A. C. Sander, V. Ramachandran, J. S. Vink, P. A. Crowther, S. R. Berlanas, A. ud-Doula, A. C. Gormaz-Matamala, C. Kehrig, R. Kuiper, C. Leitherer, L. Mahy, A. F. McLeod, A. Mehner, N. Morrell, T. Shenar, O. G. Telford, J. Th. van Loon, F. Tramper and A. Wofford Astronomy & Astrophysics 695 A197 (2025) https://doi.org/10.1051/0004-6361/202451366
A new mass estimate method with hydrodynamical atmospheres for very massive WNh stars
Gautham N. Sabhahit, Jorick S. Vink, Andreas A. C. Sander, Matheus Bernini-Peron, Paul A. Crowther, Roel R. Lefever and Tomer Shenar Astronomy & Astrophysics 696 A200 (2025) https://doi.org/10.1051/0004-6361/202453447
Improving 1D stellar atmosphere models with insights from multi-dimensional simulations
G. González-Torà, A. A. C. Sander, J. O. Sundqvist, D. Debnath, L. Delbroek, J. Josiek, R. R. Lefever, N. Moens, C. Van der Sijpt and O. Verhamme Astronomy & Astrophysics 694 A269 (2025) https://doi.org/10.1051/0004-6361/202452241
4D Grid-fitting of UV-optical Spectra of Massive Stars. I. Numerical Technique and its Associated Uncertainties
X-Shooting ULLYSES: Massive stars at low metallicity
J. M. Bestenlehner, P. A. Crowther, C. Hawcroft, H. Sana, F. Tramper, J. S. Vink, S. A. Brands and A. A. C. Sander Astronomy & Astrophysics 695 A198 (2025) https://doi.org/10.1051/0004-6361/202452491
Coupling hydrodynamics with comoving frame radiative transfer
M. Bernini-Peron, A. A. C. Sander, F. Najarro, G. N. Sabhahit, D. Pauli, R. R. Lefever, J. S. Vink, V. Ramachandran, L. M. Oskinova, G. González-Torà and E. C. Schösser Astronomy & Astrophysics 697 A41 (2025) https://doi.org/10.1051/0004-6361/202554127
Exploring the connection between atmosphere models and evolution models of very massive stars
J. Josiek, A. A. C. Sander, M. Bernini-Peron, S. Ekström, G. González-Torà, R. R. Lefever, N. Moens, V. Ramachandran and E. C. Schösser Astronomy & Astrophysics 697 A193 (2025) https://doi.org/10.1051/0004-6361/202554078
Improving 1D stellar atmosphere models with insights from multidimensional simulations
G. González-Torà, A. A. C. Sander, N. Moens, J. O. Sundqvist, D. Debnath, L. Delbroek, J. Josiek, R. R. Lefever, C. Van der Sijpt, O. Verhamme and M. Bernini-Peron Astronomy & Astrophysics 699 A244 (2025) https://doi.org/10.1051/0004-6361/202554125
A Spectroscopic Survey of Metal-poor OB Stars in Local Dwarf Galaxy NGC 3109
Abby Mintz, O. Grace Telford, Evan N. Kirby, John Chisholm, Kristen B. W. McQuinn and Danielle A. Berg The Astrophysical Journal 985(2) 150 (2025) https://doi.org/10.3847/1538-4357/adc923
Efficient Ionizers with Low H
β
+ [O iii] Equivalent Widths: JADES Spectroscopy of a Peculiar High-redshift Population
Isaac H. Laseter, Michael V. Maseda, Charlotte Simmonds, Ryan Endsley, Daniel Stark, Andrew J. Bunker, Rachana Bhatawdekar, Kristan Boyett, Alex J. Cameron, Stefano Carniani, Mirko Curti, Zhiyuan Ji, Pierluigi Rinaldi, Aayush Saxena, Sandro Tacchella, Chris Willott, Joris Witstok and Yongda Zhu The Astrophysical Journal 988(1) 73 (2025) https://doi.org/10.3847/1538-4357/adddb5
Comprehensive UV and optical spectral analysis of Cygnus X-1
V. Ramachandran, A. A. C. Sander, L. M. Oskinova, E. C. Schösser, D. Pauli, W.-R. Hamann, L. Mahy, M. Bernini-Peron, M. Brigitte and B. Kubátová Astronomy & Astrophysics 698 A37 (2025) https://doi.org/10.1051/0004-6361/202554184
X-Shooting ULLYSES: Massive stars at low metallicity
V. Ramachandran, A. A. C. Sander, D. Pauli, J. Klencki, F. Backs, F. Tramper, M. Bernini-Peron, P. Crowther, W.-R. Hamann, R. Ignace, R. Kuiper, M. S. Oey, L. M. Oskinova, T. Shenar, H. Todt, J. S. Vink, L. Wang and A. Wofford Astronomy & Astrophysics 692 A90 (2024) https://doi.org/10.1051/0004-6361/202449665
Nature of the Emission Spectrum of NGC 7793 P13: Modeling the Atmosphere of the Donor Star
Peering into the Wolf–Rayet phenomenon through [WO] and [WC] stars
Jesús A Toalá, Helge Todt and Andreas A C Sander Monthly Notices of the Royal Astronomical Society 531(2) 2422 (2024) https://doi.org/10.1093/mnras/stae1298
Observations of Extremely Metal-poor O Stars: Weak Winds and Constraints for Evolution Models
O. Grace Telford, John Chisholm, Andreas A. C. Sander, Varsha Ramachandran, Kristen B. W. McQuinn and Danielle A. Berg The Astrophysical Journal 974(1) 85 (2024) https://doi.org/10.3847/1538-4357/ad697e
Estimating the Atmospheric Parameters of Early-type Stars from the Chinese Space Station Telescope (CSST) Slitless Spectra Survey
Modeling Ionized Gas in the Small Magellanic Cloud: The Wolf–Rayet Nebula N76
Elizabeth Tarantino, Alberto D. Bolatto, Rémy Indebetouw, Mónica Rubio, Karin M. Sandstrom, J.-D T. Smith, Daniel Stapleton and Mark Wolfire The Astrophysical Journal 969(2) 101 (2024) https://doi.org/10.3847/1538-4357/ad3def
X-Shooting ULLYSES: Massive Stars at low metallicity
O. Verhamme, J. Sundqvist, A. de Koter, H. Sana, F. Backs, S. A. Brands, F. Najarro, J. Puls, J. S. Vink, P. A. Crowther, B. Kubátová, A. A. C. Sander, M. Bernini-Peron, R. Kuiper, R. K. Prinja, P. Schillemans, T. Shenar and J. Th. van Loon Astronomy & Astrophysics 692 A91 (2024) https://doi.org/10.1051/0004-6361/202451169
Multi-wavelength spectroscopic analysis of the ULX Holmberg II X-1 and its nebula suggests the presence of a heavy black hole accreting from a B-type donor
S. Reyero Serantes, L. Oskinova, W. -R. Hamann, V. M. A. Gómez-González, H. Todt, D. Pauli, R. Soria, D. R. Gies, J. M. Torrejón, T. Bulik, V. Ramachandran, A. A. C. Sander, E. Bozzo and J. Poutanen Astronomy & Astrophysics 690 A347 (2024) https://doi.org/10.1051/0004-6361/202451324
CMFGEN grids of atmosphere models for massive stars
X-Shooting ULLYSES: Massive stars at low metallicity
A. A. C. Sander, J.-C. Bouret, M. Bernini-Peron, J. Puls, F. Backs, S. R. Berlanas, J. M. Bestenlehner, S. A. Brands, A. Herrero, F. Martins, O. Maryeva, D. Pauli, V. Ramachandran, P. A. Crowther, V. M. A. Gómez-González, A. C. Gormaz-Matamala, W.-R. Hamann, D. J. Hillier, R. Kuiper, C. J. K. Larkin, R. R. Lefever, A. Mehner, F. Najarro, L. M. Oskinova, E. C. Schösser, et al. Astronomy & Astrophysics 689 A30 (2024) https://doi.org/10.1051/0004-6361/202449829
Empirical mass-loss rates and clumping properties of O-type stars in the Large Magellanic Cloud
C. Hawcroft, L. Mahy, H. Sana, J. O. Sundqvist, M. Abdul-Masih, S. A. Brands, L. Decin, A. de Koter and J. Puls Astronomy & Astrophysics 690 A126 (2024) https://doi.org/10.1051/0004-6361/202348478
Spectroscopic Observations of Ten Galactic Wolf–Rayet Stars at Bosscha Observatory: Determination of Stellar Parameters and Mass-loss Rates
Aperture and Resolution Effects on Ultraviolet Star-forming Properties: Insights from Local Galaxies and Implications for High-redshift Observations*
Ilyse Clark, Danielle A. Berg, Claus Leitherer, Karla Z. Arellano-Córdova and Andreas A. C. Sander The Astrophysical Journal 964(1) 25 (2024) https://doi.org/10.3847/1538-4357/ad1dde
Black Hole Ultracompact X-Ray Binaries as Galactic Low-frequency Gravitational Wave Sources: The He Star Channel
Oxygen abundance of γ Vel from [O iii] 88 μm Herschel/PACS spectroscopy
Paul A Crowther, M J Barlow, P Royer, D J Hillier, J M Bestenlehner, P W Morris and R Wesson Monthly Notices of the Royal Astronomical Society 528(2) 2026 (2024) https://doi.org/10.1093/mnras/stae145
A soft and transient ultraluminous X-ray source with six-hour modulation in the NGC 300 galaxy
A. Sacchi, P. Esposito, D. de Martino, R. Soria, G. L. Israel, A. A. C. Sander, L. Sidoli, D. A. H. Buckley, I. M. Monageng, A. Tiengo, M. Arca Sedda, C. Pinto, R. Di Stefano, M. Imbrogno, A. Carleo and G. Rivolta Astronomy & Astrophysics 682 A151 (2024) https://doi.org/10.1051/0004-6361/202346463
Determining stellar properties of massive stars in NGC346 in the SMC with a Bayesian statistic technique
M. J. Rickard, R. Hainich, D. Pauli, W.-R. Hamann, L. M. Oskinova, R. K. Prinja, V. Ramachandran, H. Todt, E. C. Schösser, A. A. C. Sander and P. Zeidler Astronomy & Astrophysics 692 A149 (2024) https://doi.org/10.1051/0004-6361/202450033
Spectroscopic analysis of hot, massive stars in large spectroscopic surveys with de-idealized models
J M Bestenlehner, T Enßlin, M Bergemann, P A Crowther, M Greiner and M Selig Monthly Notices of the Royal Astronomical Society 528(4) 6735 (2024) https://doi.org/10.1093/mnras/stae298
SIROCCO: a publicly available Monte Carlo ionization and radiative transfer code for astrophysical outflows
James H Matthews, Knox S Long, Christian Knigge, Stuart A Sim, Edward J Parkinson, Nick Higginbottom, Samuel W Mangham, Nicolas Scepi, Austen Wallis, Henrietta A Hewitt and Amin Mosallanezhad Monthly Notices of the Royal Astronomical Society 536(1) 879 (2024) https://doi.org/10.1093/mnras/stae2677
Investigation of [KSF2015] 1381-19L, a WC9-type Star in the High-extinction Galactic Region
2D unified atmosphere and wind simulations of O-type stars
D. Debnath, J. O. Sundqvist, N. Moens, C. Van der Sijpt, O. Verhamme and L. G. Poniatowski Astronomy & Astrophysics 684 A177 (2024) https://doi.org/10.1051/0004-6361/202348206
A massive helium star with a sufficiently strong magnetic field to form a magnetar
Tomer Shenar, Gregg A. Wade, Pablo Marchant, Stefano Bagnulo, Julia Bodensteiner, Dominic M. Bowman, Avishai Gilkis, Norbert Langer, André Nicolas-Chené, Lidia Oskinova, Timothy Van Reeth, Hugues Sana, Nicole St-Louis, Alexandre Soares de Oliveira, Helge Todt and Silvia Toonen Science 381(6659) 761 (2023) https://doi.org/10.1126/science.ade3293
Accreting black holes skewing and bending the optical emission from massive Wolf–Rayet companions – a case study of IC10 X-1
Sayantan Bhattacharya, Dimitris M Christodoulou, André-Nicolas Chene, Silas G T Laycock, Breanna A Binder and Demosthenes Kazanas Monthly Notices of the Royal Astronomical Society 524(3) 4752 (2023) https://doi.org/10.1093/mnras/stad2094
Very massive stars and pair-instability supernovae: mass-loss framework for low metallicity
Gautham N Sabhahit, Jorick S Vink, Andreas A C Sander and Erin R Higgins Monthly Notices of the Royal Astronomical Society 524(1) 1529 (2023) https://doi.org/10.1093/mnras/stad1888
The temperature dependency of Wolf–Rayet-type mass loss
A. A. C. Sander, R. R. Lefever, L. G. Poniatowski, V. Ramachandran, G. N. Sabhahit and J. S. Vink Astronomy & Astrophysics 670 A83 (2023) https://doi.org/10.1051/0004-6361/202245110
Clumping and X-rays in cooler B supergiant stars
M. Bernini-Peron, W. L. F. Marcolino, A. A. C. Sander, J.-C. Bouret, V. Ramachandran, J. Saling, F. R. N. Schneider, L. M. Oskinova and F. Najarro Astronomy & Astrophysics 677 A50 (2023) https://doi.org/10.1051/0004-6361/202346469
A spectroscopic multiplicity survey of Galactic Wolf-Rayet stars
Exploring the influence of different velocity fields on Wolf–Rayet star spectra
R R Lefever, A A C Sander, T Shenar, L G Poniatowski, K Dsilva and H Todt Monthly Notices of the Royal Astronomical Society 521(1) 1374 (2023) https://doi.org/10.1093/mnras/stad625
A low-metallicity massive contact binary undergoing slow Case A mass transfer: A detailed spectroscopic and orbital analysis of SSN 7 in NGC 346 in the SMC
From Dust to Nanodust: Resolving Circumstellar Dust from the Colliding-wind Binary Wolf-Rayet 140
Ryan M. Lau, Jason Wang, Matthew J. Hankins, Thayne Currie, Vincent Deo, Izumi Endo, Olivier Guyon, Yinuo Han, Anthony P. Jones, Nemanja Jovanovic, Julien Lozi, Anthony F. J. Moffat, Takashi Onaka, Garreth Ruane, Andreas A. C. Sander, Samaporn Tinyanont, Peter G. Tuthill, Gerd Weigelt, Peredur M. Williams and Sebastien Vievard The Astrophysical Journal 951(2) 89 (2023) https://doi.org/10.3847/1538-4357/acd4c5
Looking for nebular He ii emission south of the multiple-massive star system, HD 5980
A Sixtos, A Wofford, A A C Sander and A Peimbert Monthly Notices of the Royal Astronomical Society 519(4) 5656 (2023) https://doi.org/10.1093/mnras/stac3732
X-Shooting ULLYSES: Massive stars at low metallicity
Jorick S. Vink, A. Mehner, P. A. Crowther, A. Fullerton, M. Garcia, F. Martins, N. Morrell, L. M. Oskinova, N. St-Louis, A. ud-Doula, A. A. C. Sander, H. Sana, J.-C. Bouret, B. Kubátová, P. Marchant, L. P. Martins, A. Wofford, J. Th. van Loon, O. Grace Telford, Y. Götberg, D. M. Bowman, C. Erba, V. M. Kalari, M. Abdul-Masih, T. Alkousa, et al. Astronomy & Astrophysics 675 A154 (2023) https://doi.org/10.1051/0004-6361/202245650
A partially stripped massive star in a Be binary at low metallicity
V. Ramachandran, J. Klencki, A. A. C. Sander, D. Pauli, T. Shenar, L. M. Oskinova and W.-R. Hamann Astronomy & Astrophysics 674 L12 (2023) https://doi.org/10.1051/0004-6361/202346818
Analysis of integral field spectroscopy observations of the planetary nebula Hen 2-108 and its central star
Bárbara L Miranda Marques, Hektor Monteiro, Isabel Aleman, Stavros Akras, Helge Todt and Romano L M Corradi Monthly Notices of the Royal Astronomical Society 522(1) 1049 (2023) https://doi.org/10.1093/mnras/stad1055
Spectroscopic and evolutionary analyses of the binary system AzV 14 outline paths toward the WR stage at low metallicity
D. Pauli, L. M. Oskinova, W.-R. Hamann, D. M. Bowman, H. Todt, T. Shenar, A. A. C. Sander, C. Erba, V. M. A. Gómez-González, C. Kehrig, J. Klencki, R. Kuiper, A. Mehner, S. E. de Mink, M. S. Oey, V. Ramachandran, A. Schootemeijer, S. Reyero Serantes and A. Wofford Astronomy & Astrophysics 673 A40 (2023) https://doi.org/10.1051/0004-6361/202345881
New self-consistent wind parameters to fit optical spectra of O-type stars observed with the HERMES spectrograph
A. C. Gormaz-Matamala, M. Curé, A. Lobel, J. A. Panei, J. Cuadra, I. Araya, C. Arcos and F. Figueroa-Tapia Astronomy & Astrophysics 661 A51 (2022) https://doi.org/10.1051/0004-6361/202142383
Evolution of massive stars with new hydrodynamic wind models
SDSS-IV MaNGA: pyPipe3D Analysis Release for 10,000 Galaxies
S. F. Sánchez, J. K. Barrera-Ballesteros, E. Lacerda, A. Mejía-Narvaez, A. Camps-Fariña, Gustavo Bruzual, C. Espinosa-Ponce, A. Rodríguez-Puebla, A. R. Calette, H. Ibarra-Medel, V. Avila-Reese, H. Hernandez-Toledo, M. A. Bershady, M. Cano-Diaz and A. M. Munguia-Cordova The Astrophysical Journal Supplement Series 262(2) 36 (2022) https://doi.org/10.3847/1538-4365/ac7b8f
How much hydrogen is in Type Ib and IIb supernova progenitors?
UV spectropolarimetry with Polstar: massive star binary colliding winds
Nicole St-Louis, Ken Gayley, D. John Hillier, Richard Ignace, Carol E. Jones, Alexandre David-Uraz, Noel D. Richardson, Jorick S. Vink, Geraldine J. Peters, Jennifer L. Hoffman, Yaël Nazé, Heloise Stevance, Tomer Shenar, Andrew G. Fullard, Jamie R. Lomax and Paul A. Scowen Astrophysics and Space Science 367(12) (2022) https://doi.org/10.1007/s10509-022-04102-0
Catching a grown-up starfish planetary nebula – II. Plasma analysis and central star properties of PC 22
L Sabin, V Gómez-Llanos, C Morisset, V M A Gómez-González, M A Guerrero, H Todt and X Fang Monthly Notices of the Royal Astronomical Society 511(1) 1 (2022) https://doi.org/10.1093/mnras/stab3649
The earliest O-type eclipsing binary in the Small Magellanic Cloud, AzV 476: A comprehensive analysis reveals surprisingly low stellar masses
D. Pauli, L. M. Oskinova, W.-R. Hamann, V. Ramachandran, H. Todt, A. A. C. Sander, T. Shenar, M. Rickard, J. Maíz Apellániz and R. Prinja Astronomy & Astrophysics 659 A9 (2022) https://doi.org/10.1051/0004-6361/202141738
A spectroscopic multiplicity survey of Galactic Wolf-Rayet stars
Stellar wind properties of the nearly complete sample of O stars in the low metallicity young star cluster NGC 346 in the SMC galaxy
M. J. Rickard, R. Hainich, W.-R. Hamann, L. M. Oskinova, R. K. Prinja, V. Ramachandran, D. Pauli, H. Todt, A. A. C. Sander, T. Shenar, Y.-H. Chu and J. S. Gallagher Astronomy & Astrophysics 666 A189 (2022) https://doi.org/10.1051/0004-6361/202243281
Ups!... I did it again: unveiling the hidden companion in Upsilon Sagittarii, a unique binary system at a second mass transfer stage
Characterizing Extreme Emission Line Galaxies. II. A Self-consistent Model of Their Ionizing Spectrum*
Grace M. Olivier, Danielle A. Berg, John Chisholm, Dawn K. Erb, Richard W. Pogge and Evan D. Skillman The Astrophysical Journal 938(1) 16 (2022) https://doi.org/10.3847/1538-4357/ac8f2c
Upper mass-loss limits and clumping in the intermediate and outer wind regions of OB stars
M. M. Rubio-Díez, J. O. Sundqvist, F. Najarro, A. Traficante, J. Puls, L. Calzoletti and D. Figer Astronomy & Astrophysics 658 A61 (2022) https://doi.org/10.1051/0004-6361/202040116
WO-type Wolf–Rayet Stars: The Last Hurrah of Massive Star Evolution*
Erin Aadland, Philip Massey, D. John Hillier, Nidia I. Morrell, Kathryn F. Neugent and J. J. Eldridge The Astrophysical Journal 931(2) 157 (2022) https://doi.org/10.3847/1538-4357/ac66e7
Planetary nebulae with Wolf–Rayet-type central stars – IV. NGC 1501 and its mixing layer
G Rubio, J A Toalá, H Todt, L Sabin, E Santamaría, G Ramos-Larios and M A Guerrero Monthly Notices of the Royal Astronomical Society 517(4) 5166 (2022) https://doi.org/10.1093/mnras/stac3011
Phase-resolved spectroscopic analysis of the eclipsing black hole X-ray binary M33 X-7: System properties, accretion, and evolution
V. Ramachandran, L. M. Oskinova, W.-R. Hamann, A. A. C. Sander, H. Todt, D. Pauli, T. Shenar, J. M. Torrejón, K. A. Postnov, J. M. Blondin, E. Bozzo, R. Hainich and D. Massa Astronomy & Astrophysics 667 A77 (2022) https://doi.org/10.1051/0004-6361/202243683
HR-pypopstar: high-wavelength-resolution stellar populations evolutionary synthesis model
I Millán-Irigoyen, M Mollá, M Cerviño, Y Ascasibar, M L García-Vargas and P R T Coelho Monthly Notices of the Royal Astronomical Society 506(4) 4781 (2021) https://doi.org/10.1093/mnras/stab1969
Discovery of O stars in the tidal Magellanic Bridge
New Hydrodynamic Solutions for Line-driven Winds of Hot Massive Stars Using the Lambert W-function
A. C. Gormaz-Matamala, M. Curé, D. J. Hillier, F. Najarro, B. Kubátová and J. Kubát The Astrophysical Journal 920(1) 64 (2021) https://doi.org/10.3847/1538-4357/ac12c9
Sagittarius B1: A Patchwork of H ii Regions and Photodissociation Regions
Janet P. Simpson, Sean W. J. Colgan, Angela S. Cotera, Michael J. Kaufman and Susan R. Stolovy The Astrophysical Journal 910(1) 59 (2021) https://doi.org/10.3847/1538-4357/abe636
Metallicity-dependent wind parameter predictions for OB stars
The First Dynamical Mass Determination of a Nitrogen-rich Wolf–Rayet Star Using a Combined Visual and Spectroscopic Orbit
Noel D. Richardson, Laura Lee, Gail Schaefer, Tomer Shenar, Andreas A. C. Sander, Grant M. Hill, Andrew G. Fullard, John D. Monnier, Narsireddy Anugu, Claire L Davies, Tyler Gardner, Cyprien Lanthermann, Stefan Kraus and Benjamin R. Setterholm The Astrophysical Journal Letters 908(1) L3 (2021) https://doi.org/10.3847/2041-8213/abd722
Revisiting the archetypical wind accretor Vela X-1 in depth
P. Kretschmar, I. El Mellah, S. Martínez-Núñez, F. Fürst, V. Grinberg, A. A. C. Sander, J. van den Eijnden, N. Degenaar, J. Maíz Apellániz, F. Jiménez Esteban, M. Ramos-Lerate and E. Utrilla Astronomy & Astrophysics 652 A95 (2021) https://doi.org/10.1051/0004-6361/202040272
Maximum black hole mass across cosmic time
Jorick S Vink, Erin R Higgins, Andreas A C Sander and Gautham N Sabhahit Monthly Notices of the Royal Astronomical Society 504(1) 146 (2021) https://doi.org/10.1093/mnras/stab842
Ultraviolet spectra of extreme nearby star-forming regions: Evidence for an overabundance of very massive stars
Peter Senchyna, Daniel P Stark, Stéphane Charlot, Jacopo Chevallard, Gustavo Bruzual and Alba Vidal-García Monthly Notices of the Royal Astronomical Society 503(4) 6112 (2021) https://doi.org/10.1093/mnras/stab884
Analysis of Spectral Lines in Large Databases of Synthetic Spectra for Massive Stars
Celia R. Fierro-Santillán, Jaime Klapp, Leonardo Di G. Sigalotti, Janos Zsargó and Markus Hareter The Astronomical Journal 161(3) 121 (2021) https://doi.org/10.3847/1538-3881/abd950
Carbon dust in the evolved born-again planetary nebulae A 30 and A 78
J A Toalá, P Jiménez-Hernández, J B Rodríguez-González, et al. Monthly Notices of the Royal Astronomical Society 503(1) 1543 (2021) https://doi.org/10.1093/mnras/stab593
Empirical mass-loss rates and clumping properties of Galactic early-type O supergiants
C. Hawcroft, H. Sana, L. Mahy, J. O. Sundqvist, M. Abdul-Masih, J. C. Bouret, S. A. Brands, A. de Koter, F. A. Driessen and J. Puls Astronomy & Astrophysics 655 A67 (2021) https://doi.org/10.1051/0004-6361/202140603
Planetary nebulae with Wolf–Rayet-type central stars – III. A detailed view of NGC 6905 and its central star
V M A Gómez-González, G Rubio, J A Toalá, M A Guerrero, L Sabin, H Todt, V Gómez-Llanos, G Ramos-Larios and Y D Mayya Monthly Notices of the Royal Astronomical Society 509(1) 974 (2021) https://doi.org/10.1093/mnras/stab3042
BAT99-9 – a WC4 Wolf−Rayet star with nitrogen emission: evidence for binary evolution?
D John Hillier, Erin Aadland, Philip Massey and Nidia Morrell Monthly Notices of the Royal Astronomical Society 503(2) 2726 (2021) https://doi.org/10.1093/mnras/stab580
Atmospheric NLTE models for the spectroscopic analysis of blue stars with winds
Is HR 6819 a triple system containing a black hole?
J. Bodensteiner, T. Shenar, L. Mahy, M. Fabry, P. Marchant, M. Abdul-Masih, G. Banyard, D. M. Bowman, K. Dsilva, A. J. Frost, C. Hawcroft, M. Reggiani and H. Sana Astronomy & Astrophysics 641 A43 (2020) https://doi.org/10.1051/0004-6361/202038682
A 3D short-characteristics method for continuum and line scattering problems in the winds of hot stars
Resolving Decades of Periodic Spirals from the Wolf–Rayet Dust Factory WR 112
Ryan M. Lau, Matthew J. Hankins, Yinuo Han, Izumi Endo, Anthony F. J. Moffat, Michael E. Ressler, Itsuki Sakon, Joel Sanchez-Bermudez, Anthony Soulain, Ian R. Stevens, Peter G. Tuthill and Peredur M. Williams The Astrophysical Journal 900(2) 190 (2020) https://doi.org/10.3847/1538-4357/abaab8
Spectroscopic patch model for massive stars using PHOEBE II and FASTWIND
The cooling-down central star of the planetary nebula SwSt 1: a late thermal pulse in a massive post-AGB star?
Marcin Hajduk, Helge Todt, Wolf-Rainer Hamann, et al. Monthly Notices of the Royal Astronomical Society 498(1) 1205 (2020) https://doi.org/10.1093/mnras/staa2274
The stellar and wind parameters of six prototypical HMXBs and their evolutionary status
Revisiting the Impact of Dust Production from Carbon-rich Wolf–Rayet Binaries
Ryan M. Lau, J. J. Eldridge, Matthew J. Hankins, Astrid Lamberts, Itsuki Sakon and Peredur M. Williams The Astrophysical Journal 898(1) 74 (2020) https://doi.org/10.3847/1538-4357/ab9cb5