Stellar-mass black holes are the final remnants of stars born with more than 15 solar masses. Billions are expected to reside in the Local Group, yet only a few are known, mostly detected through X-rays emitted as they accrete material from a companion star. Here, we report on VFTS 243: a massive X-ray-faint binary in the Large Magellanic Cloud. With an orbital period of 10.4 d, it comprises an O-type star of 25 solar masses and an unseen companion of at least nine solar masses. Our spectral analysis excludes a non-degenerate companion at a 5σ confidence level. The minimum companion mass implies that it is a black hole. No other X-ray-quiet black hole is unambiguously known outside our Galaxy. The (near-)circular orbit and kinematics of VFTS 243 imply that the collapse of the progenitor into a black hole was associated with little or no ejected material or black-hole kick. Identifying such unique binaries substantially impacts the predicted rates of gravitational-wave detections and properties of core-collapse supernovae across the cosmos.
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The VFTS and TMBM spectra are available in the ESO archives (archive.eso.org/cms.html). The input files of our stellar evolution model (Supplementary Information) are available at https://zenodo.org/record/6514646. The OGLE light curve is available for download at https://cdsarc.u-strasbg.fr/ftp/vizier.submit/OGLE_VFTS243. Any other processed materials are available from the corresponding author upon reasonable request.
The fd3 tool used for Fourier disentangling is available online (http://sail.zpf.fer.hr/fdbinary/). The shift-and-add Python implementation used here is available from the corresponding author upon reasonable request. We refer the reader to the CMFGEN (http://kookaburra.phyast.pitt.edu/hillier/web/CMFGEN.htm), PoWR (www.astro.physik.uni-potsdam.de/PoWR), FASTWIND (fys.kuleuven.be/ster/research-projects/equation-folder/codes-folder/fastwind) and PHOEBE (http://phoebe-project.org/) webpages for access and availability policies.
The LIGO Scientific Collaboration et al. GWTC-3: compact binary coalescences observed by LIGO and Virgo during the second part of the third observing run. Preprint at https://arxiv.org/abs/2111.03606 (2021).
Mandel, I. & Broekgaarden, F. S. Rates of compact object coalescences. Living Rev. Relativ. 25, 1 (2022).
Mapelli, M., Bouffanais, Y., Santoliquido, F., Arca Sedda, M. & Artale, M. C. The cosmic evolution of binary black holes in young, globular, and nuclear star clusters: rates, masses, spins, and mixing fractions. Mon. Not. R. Astron. Soc. 511, 5797–5816 (2022).
Israelian, G., Rebolo, R., Basri, G., Casares, J. & Martín, E. L. Evidence of a supernova origin for the black hole in the system GRO J1655-40. Nature 401, 142–144 (1999).
Mirabel, I. F. & Rodrigues, I. Formation of a black hole in the dark. Science 300, 1119–1121 (2003).
Gal-Yam, A. et al. A WC/WO star exploding within an expanding carbon–oxygen–neon nebula. Nature 601, 201–204 (2022).
Belczynski, K., Kalogera, V. & Bulik, T. A comprehensive study of binary compact objects as gravitational wave sources: evolutionary channels, rates, and physical properties. Astrophys. J. 572, 407–431 (2002).
Marchant, P., Langer, N., Podsiadlowski, P., Tauris, T. M. & Moriya, T. J. A new route towards merging massive black holes. Astron. Astrophys. 588, A50 (2016).
Langer, N. et al. γ Cas stars: normal Be stars with discs impacted by the wind of a helium-star companion? Astron. Astrophys. 633, A40 (2020).
Geier, S. et al. Hot subdwarf stars in close-up view. I. Rotational properties of subdwarf B stars in close binary systems and nature of their unseen companions. Astron. Astrophys. 519, A25 (2010).
Giesers, B. et al. A detached stellar-mass black hole candidate in the globular cluster NGC 3201. Mon. Not. R. Astron. Soc. 475, L15–L19 (2018).
Thompson, T. A. et al. A noninteracting low-mass black hole–giant star binary system. Science 366, 637–640 (2019).
Liu, J. et al. A wide star–black-hole binary system from radial-velocity measurements. Nature 575, 618–621 (2019).
Rivinius, T., Baade, D., Hadrava, P., Heida, M. & Klement, R. A naked-eye triple system with a nonaccreting black hole in the inner binary. Astron. Astrophys. 637, L3 (2020).
Lennon, D. J. et al. The VLT-FLAMES survey of massive stars. NGC2004#115: a triple system hosting a possible short period B+BH binary. Preprint at https://arxiv.org/abs/2111.12173 (2021).
Saracino, S. et al. A black hole detected in the young massive LMC cluster NGC 1850. Mon. Not. R. Astron. Soc. 511, 2914–2924 (2022).
Abdul-Masih, M. et al. On the signature of a 70-solar-mass black hole in LB-1. Nature 580, E11–E15 (2020).
Shenar, T. et al. The ‘hidden’ companion in LB-1 unveiled by spectral disentangling. Astron. Astrophys. 639, L6 (2020).
El-Badry, K., Burdge, K. B. & Mróz, P. NGC 2004 #115: a black hole imposter containing three luminous stars. Mon. Not. R. Astron. Soc. 511, 3089–3100 (2022).
Bodensteiner, J. et al. Is HR 6819 a triple system containing a black hole? An alternative explanation. Astron. Astrophys. 641, A43 (2020).
El-Badry, K. & Burdge, K. B. NGC 1850 BH1 is another stripped-star binary masquerading as a black hole. Mon. Not. R. Astron. Soc. 511, 24–29 (2022).
Casares, J. et al. A Be-type star with a black-hole companion. Nature 505, 378–381 (2014).
Gomez, S. & Grindlay, J. E. Optical analysis and modeling of HD96670, a new black hole x-ray binary candidate. Astrophys. J. 913, 48 (2021).
Almeida, L. A. et al. The Tarantula Massive Binary Monitoring. I. Observational campaign and OB-type spectroscopic binaries. Astron. Astrophys. 598, A84 (2017).
Evans, C. J. et al. The VLT-FLAMES Tarantula Survey. I. Introduction and observational overview. Astron. Astrophys. 530, A108 (2011).
Udalski, A., Szymański, M. K. & Szymański, G. OGLE-IV: fourth phase of the Optical Gravitational Lensing Experiment. Acta Astron. 65, 1–38 (2015).
Hadrava, P. Orbital elements of multiple spectroscopic stars. Astron. Astrophys. Suppl. 114, 393 (1995).
El-Badry, K. et al. Unicorns and giraffes in the binary zoo: stripped giants with subgiant companions. Mon. Not. R. Astron. Soc. 512, 5620–5641 (2022).
Irrgang, A., Geier, S., Kreuzer, S., Pelisoli, I. & Heber, U. A stripped helium star in the potential black hole binary LB-1. Astron. Astrophys. 633, L5 (2020).
Bondi, H. On spherically symmetrical accretion. Mon. Not. R. Astron. Soc. 112, 195–204 (1952).
Rodriguez, J. et al. GS 2000+25: the least luminous black hole x-ray binary. Astrophys. J. 889, 58 (2020).
Shakura, N. I. & Sunyaev, R. A. Black holes in binary systems. observational appearance. Astron. Astrophys. 24, 337–355 (1973).
Shapiro, S. L. & Teukolsky, S. A. Black Holes, White Dwarfs and Neutron Stars: the Physics of Compact Objects (1986).
Sen, K. et al. X-ray emission from BH+O star binaries expected to descend from the observed galactic WR+O binaries. Astron. Astrophys. 652, A138 (2021).
Lovegrove, E. & Woosley, S. E. Very low energy supernovae from neutrino mass loss. Astrophys. J. 769, 109 (2013).
Miller-Jones, J. C. A. et al. Cygnus X-1 contains a 21-solar mass black hole—implications for massive star winds. Science 371, 1046–1049 (2021).
Sukhbold, T., Ertl, T., Woosley, S. E., Brown, J. M. & Janka, H. T. Core-collapse supernovae from 9 to 120 solar masses based on neutrino-powered explosions. Astrophys. J. 821, 38 (2016).
Gaia Collaboration et al. Gaia Early Data Release 3. Summary of the contents and survey properties. Astron. Astrophys. 649, A1 (2021).
Breivik, K., Chatterjee, S. & Larson, S. L. Revealing black holes with Gaia. Astrophys. J. Lett. 850, L13 (2017).
Janssens, S. et al. Uncovering astrometric black hole binaries with massive main-sequence companions with Gaia. Astron. Astrophys. 658, A129 (2022).
Gomel, R., Faigler, S., Mazeh, T. & Pawlak, M. Search for dormant black holes in ellipsoidal variables—III. The OGLE BULGE short-period sample. Mon. Not. R. Astron. Soc. 504, 5907–5918 (2021).
Schneider, F. R. N. et al. The VLT-FLAMES Tarantula Survey. XXIX. Massive star formation in the local 30 Doradus starburst. Astron. Astrophys. 618, A73 (2018).
Schneider, F. R. N. et al. BONNSAI: a Bayesian tool for comparing stars with stellar evolution models. Astron. Astrophys. 570, A66 (2014).
Brott, I. et al. Rotating massive main-sequence stars. I. Grids of evolutionary models and isochrones. Astron. Astrophys. 530, A115 (2011).
Köhler, K. et al. The evolution of rotating very massive stars with LMC composition. Astron. Astrophys. 573, A71 (2015).
Hillier, D. J. & Miller, D. L. The treatment of non-LTE line blanketing in spherically expanding outflows. Astrophys. J. 496, 407–427 (1998).
Marchenko, S. V., Moffat, A. F. J. & Eenens, P. R. J. The Wolf–Rayet binary WR 141 (WN5O + O5 V–III) revisited. Publ. Astron. Soc. Pac. 110, 1416–1422 (1998).
Shenar, T. et al. The Wolf–Rayet binaries of the nitrogen sequence in the Large Magellanic Cloud. Spectroscopy, orbital analysis, formation, and evolution. Astron. Astrophys. 627, A151 (2019).
Quintero, E. A., Eenens, P. & Rauw, G. The massive binary system 9 Sgr revisited: new insights into disentangling methods. Astron. Nachr. 341, 628–637 (2020).
Abdul-Masih, M. et al. Spectroscopic patch model for massive stars using PHOEBE II and FASTWIND. Astron. Astrophys. 636, A59 (2020).
Hubeny, I. & Lanz, T. Non-LTE line-blanketed model atmospheres of hot stars. I. Hybrid complete linearization/accelerated lambda iteration method. Astrophys. J. 439, 875–904 (1995).
Lanz, T. & Hubeny, I. A grid of NLTE line-blanketed model atmospheres of early B-type stars. Astrophys. J. Suppl. 169, 83–104 (2007).
Hamann, W. R. & Gräfener, G. A temperature correction method for expanding atmospheres. Astron. Astrophys. 410, 993–1000 (2003).
Sander, A. et al. On the consistent treatment of the quasi-hydrostatic layers in hot star atmospheres. Astron. Astrophys. 577, A13 (2015).
Prša, A. & Zwitter, T. A computational guide to physics of eclipsing binaries. I. Demonstrations and perspectives. Astrophys. J. 628, 426–438 (2005).
Evans, C. J. et al. The VLT-FLAMES Tarantula Survey. XVIII. Classifications and radial velocities of the B-type stars. Astron. Astrophys. 574, A13 (2015).
This research has received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (T.S. and H.S., grant agreement 772225: MULTIPLES). T.S. acknowledges support from the European Union’s Horizon 2020 programme under Marie Skłodowska-Curie grant agreement 101024605. This work is based on observations collected at the ESO under programme IDs 182.D-0222, 090.D-0323 and 092.D-0136. L.M. thanks the ESA and the Belgian Federal Science Policy Office (BELSPO) for their support in the framework of the PRODEX programme. P. Marchant acknowledges support from FWO junior postdoctoral fellowship 12ZY520N. We thank J. Hillier for making the CMFGEN code available. C.H. acknowledges support from the KU Leuven Research Council (grant C16/17/007: MAESTRO). P.A.C. acknowledges support from UK Science and Technology Facilities Council research grant ST/V000853/1. V.H.-B. acknowledges the support of the Natural Sciences and Engineering Research Council of Canada (NSERC) through grant RGPIN-2020-05990. M. Gieles acknowledges support from the Ministry of Science and Innovation through a Europa Excelencia grant (EUR2020-112157). The PoWR code, as well as the associated post-processing and visualization tool WRplot, has been developed under the guidance of W.-R. Hamann with substantial contributions from L. Koesterke, G. Gräfener, A. Sander, T.S. and other co-workers and students. This work has received funding from the ERC under the European Union’s Horizon 2020 research and innovation programme (grant agreement 945806). It is also supported by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany’s Excellence Strategy EXC 2181/1-390900948 (the Heidelberg STRUCTURES Excellence Cluster). S.T. acknowledges support from the Netherlands Research Council NWO (grants VENI 639.041.645, VIDI 203.061). A.H. and D.J.L. acknowledge support by the Spanish MCI through grant PGC-2018-0913741-B-C22 and the Severo Ochoa Programme through CEX2019-000920-S. J.M.A. acknowledges support from the Spanish Government Ministerio de Ciencia, Innovación y Universidades through grant PGC2018-095-049-B-C22. We thank I. Mayo and S. Pinilla for their work on the visualization of VFTS 243. We acknowledge the Cambridge Astronomical Survey Unit and ESO for the background image in Fig. 1. This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France.
The authors declare no competing interests.
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Shenar, T., Sana, H., Mahy, L. et al. An X-ray-quiet black hole born with a negligible kick in a massive binary within the Large Magellanic Cloud. Nat Astron (2022). https://doi.org/10.1038/s41550-022-01730-y