Light curves and colours of the ejecta from Dimorphos after the DART impact

Article

Graykowski, Ariel, Lambert, Ryan A., Marchis, Franck, Cazeneuve, Dorian, Dalba, Paul A., Esposito, Thomas M., Peluso, Daniel O’Conner, Sgro, Lauren A., Blaclard, Guillaume, Borot, Antonin, Malvache, Arnaud, Marfisi, Laurent, Powell, Tyler M., Huet, Patrice, Limagne, Matthieu, Payet, Bruno, Clarke, Colin, Murabana, Susan, Owen, Daniel Chu, ..., Transom, Ian M.. 2023. "Light curves and colours of the ejecta from Dimorphos after the DART impact." Nature. 616, pp. 461-464. https://doi.org/10.1038/s41586-023-05852-9
Article Title

Light curves and colours of the ejecta from Dimorphos after the DART impact

ERA Journal ID17479
Article CategoryArticle
AuthorsGraykowski, Ariel, Lambert, Ryan A., Marchis, Franck, Cazeneuve, Dorian, Dalba, Paul A., Esposito, Thomas M., Peluso, Daniel O’Conner, Sgro, Lauren A., Blaclard, Guillaume, Borot, Antonin, Malvache, Arnaud, Marfisi, Laurent, Powell, Tyler M., Huet, Patrice, Limagne, Matthieu, Payet, Bruno, Clarke, Colin, Murabana, Susan, Owen, Daniel Chu, Wasilwa, Ronald, Fukui, Keiichi, Goto, Tateki, Guillet, Bruno, Huth, Patrick, Ishiyama, Satoshi, Kukita, Ryuichi, Mitchell, Mike, Primm, Michael, Randolph, Justus, Rivett, Darren A., Ryno, Matthew, Shimizu, Masao, Toullec, Jean-Pierre, Will, Stefan, Yue, Wai-Chun, Camilleri, Michael, Graykowski, Kathy, Janetzke, Ron, Janke, Des, Kardel, Scott, Loose, Margaret, Pickering, John W., Smith, Barton A. and Transom, Ian M.
Journal TitleNature
Journal Citation616, pp. 461-464
Number of Pages8
Year2023
PublisherNature Publishing Group
Place of PublicationUnited Kingdom
ISSN0028-0836
0090-0028
0300-8746
1476-4687
Digital Object Identifier (DOI)https://doi.org/10.1038/s41586-023-05852-9
Web Address (URL)https://www.nature.com/articles/s41586-023-05852-9
AbstractOn 26 September 2022, the Double Asteroid Redirection Test (DART) spacecraft struck Dimorphos, a satellite of the asteroid 65803 Didymos1. Because it is a binary system, it is possible to determine how much the orbit of the satellite changed, as part of a test of what is necessary to deflect an asteroid that might threaten Earth with an impact. In nominal cases, pre-impact predictions of the orbital period reduction ranged from roughly 8.8 to 17 min (refs. 2,3). Here we report optical observations of Dimorphos before, during and after the impact, from a network of citizen scientists’ telescopes across the world. We find a maximum brightening of 2.29 ± 0.14 mag on impact. Didymos fades back to its pre-impact brightness over the course of 23.7 ± 0.7 days. We estimate lower limits on the mass contained in the ejecta, which was 0.3–0.5% Dimorphos’s mass depending on the dust size. We also observe a reddening of the ejecta on impact.
KeywordsDimorphos; DART impact; Double Asteroid Redirection Test
Contains Sensitive ContentDoes not contain sensitive content
ANZSRC Field of Research 20205101. Astronomical sciences
Byline AffiliationsSETI Institute, United States
Unistellar, France
University of California Santa Cruz, United States
University of California Berkeley, United States
Centre for Astrophysics
University of California Los Angeles, United States
Unistellar Citizen Scientists
Armagh Observatory and Planetarium, United Kingdom
Travelling Telescope, Kenya
Community College of Allegheny County, United States
University of Otago, New Zealand
Christchurch Hospital, New Zealand
Hamilton Astronomical Society Observatory, New Zealand
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Dalba, Paul A., Kane, Stephen R., Li, Zhexing, MacDougall, Mason G., Rosenthal, Lee J., Cherubim, Collin, Isaacson, Howard, Thorngren, Daniel P., Fulton, Benjamin, Howard, Andrew W., Petigura, Erik A., Schwieterman, Edward W., O’Conner Peluso, Dan, Esposito, Thomas M., Marchis, Franck and Payne, Matthew J.. 2021. "Giant Outer Transiting Exoplanet Mass (GOT 'EM) Survey. II. Discovery of a Failed Hot Jupiter on a 2.7 Yr, Highly Eccentric Orbit." The Astronomical Journal. 162. https://doi.org/10.3847/1538-3881/ac134b
Size and shape of (11351) leucus from five occultations
Buie, Marc W., Keeney, Brian A., Strauss, Ryder H., Blank, Ted E., Moore, John G., Porter, Simon B., Wasserman, Lawrence H., Weryk, Robert J., Levison, Harold F., Olkin, Catherine B., Leiva, Rodrigo, Bardecker, Jerry E., Brown, Michael E, Brown, Lilah B, Collins, Michael P., Davidson, Hugh M., Dunham, David W., Dunham, Joan B., Eaccarino, John A., ..., Zhang, Qicheng. 2021. "Size and shape of (11351) leucus from five occultations." The Planetary Science Journal. 2 (5), pp. 1-38. https://doi.org/10.3847/PSJ/ac1f9b
Transits of Known Planets Orbiting a Naked-eye Star
Kane, Stephen R., Yalcinkaya, Selcuk, Osborn, Hugh P., Dalba, Paul A., Nielsen, Louise D., Vanderburg, Andrew, Mocnik, Teo, Hinkel, Natalie R., Ostberg, Colby, Esmer, Ekrem Murat, Udry, Stephane, Fetherolf, Tara, Basturk, Ozgur, Ricker, George R., Vanderspek, Roland, Latham, David W., Seager, Sara, Winn, Joshua N., Jenkins, Jon M., ..., Wright, Jason T.. 2020. "Transits of Known Planets Orbiting a Naked-eye Star." The Astronomical Journal. 160 (3), pp. 1-10. https://doi.org/10.3847/1538-3881/aba835
Solar System Physics for Exoplanet Research
Horner, J., Kane, S. R., Marshall, J. P., Dalba, P. A., Holt, T. R., Wood, J., Maynard-Casely, H. E., Wittenmyer, R., Lykawka, P. S., Hill, M., Salmeron, R., Bailey, J., Lohne, T., Agnew, M., Carter, B. D. and Tylor, C. C. E.. 2020. "Solar System Physics for Exoplanet Research." Publications of the Astronomical Society of the Pacific. 132 (1016), pp. 1-115. https://doi.org/10.1088/1538-3873/ab8eb9
Detection of Planetary and Stellar Companions to Neighboring Stars via a Combination of Radial Velocity and Direct Imaging Techniques
Kane, Stephen R., Dalba, Paul A., Li, Zhexing, Horch, Elliott P., Hirsch, Lea A., Horner, Jonathan, Wittenmyer, Robert A., Howell, Steve B., Everett, Mark E., Butler, R. Paul, Tinney, Christopher G., Carter, Brad D., Wright, Duncan J., Jones, Hugh R. A., Bailey, Jeremy and O'Toole, Simon J.. 2019. "Detection of Planetary and Stellar Companions to Neighboring Stars via a Combination of Radial Velocity and Direct Imaging Techniques." The Astronomical Journal. 157 (6), pp. 252-262. https://doi.org/10.3847/1538-3881/ab1ddf
Discovery of a compact companion to a nearby star
Kane, Stephen R., Dalba, Paul A., Horner, Jonathan, Li, Zhexing, Wittenmyer, Robert A., Horch, Elliott P., Howell, Steve B. and Everett, Mark E.. 2019. "Discovery of a compact companion to a nearby star." The Astrophysical Journal: an international review of astronomy and astronomical physics. 875 (1), pp. 1-6. https://doi.org/10.3847/1538-4357/ab0e74
Multiwavelength Transit Observations of the Candidate Disintegrating Planetesimals Orbiting WD 1145+017
Croll, Bryce, Dalba, Paul A., Vanderburg, Andrew, Eastman, Jason, Rappaport, Saul, De Vore, John, Bieryla, Allyson, Muirhead, Philip S., Han, Eunkyu, Latham, David W., Beatty, Thomas G., Wittenmyer, Robert A., Wright, Jason T., Johnson, John Asher and McCrady, Nate. 2017. "Multiwavelength Transit Observations of the Candidate Disintegrating Planetesimals Orbiting WD 1145+017." The Astrophysical Journal: an international review of astronomy and astronomical physics. 836 (1), pp. 1-16. https://doi.org/10.3847/1538-4357/836/1/82
Using portable Moodle and eReaders to enhance learning at a distance for incarcerated offenders
Murphy, Angela, Farley, Helen, Janke, Des and Fowler, Jonathon. 2012. "Using portable Moodle and eReaders to enhance learning at a distance for incarcerated offenders." MoodleMoot Au 2012: Riding the Wave. Gold Coast, Australia 01 - 04 Jul 2012
The Close AGN Reference Survey (CARS). What is causing Mrk 1018's return to the shadows after 30 years?
Husemann, B., Urrutia, T., Tremblay, G.R., Krumpe, M., Dexter, J., Busch, G., Combes, F., Croom, S. M., Davis, T.A., Eckart, A., McElroy, R. E., Pérez-Torres, M., Powell, T.M. and Scharwächter, J.. 2016. "The Close AGN Reference Survey (CARS). What is causing Mrk 1018's return to the shadows after 30 years?" Astronomy and Astrophysics: a European journal. 593, p. L9. https://doi.org/10.1051/0004-6361/201629245
Using Moodle and eReaders to overcome the digital divide in the education of incarcerated offenders: work in progress report
Farley, Helen, Janke, Des, Murphy, Angela and Fowler, Jonathon. 2012. "Using Moodle and eReaders to overcome the digital divide in the education of incarcerated offenders: work in progress report." MoodleMoot Au 2012: Riding the Wave. Gold Coast, Australia 01 - 04 Jul 2012 Gold Coast, Australia.