Sudden Extreme Obscuration of a Sun-like Main-sequence Star: Evolution of the Circumstellar Dust around ASASSN-21qj

Article

Marshall, Jonathan P., Ertel, Steve, Kemper, Francisca, Del Burgo, Carlos, Otten, Gilles P. P. L., Scicluna, Peter, Zeegers, Sascha T., Ribas, Álvaro and Morata, Oscar. 2023. "Sudden Extreme Obscuration of a Sun-like Main-sequence Star: Evolution of the Circumstellar Dust around ASASSN-21qj." The Astrophysical Journal: an international review of astronomy and astronomical physics. 954 (2). https://doi.org/10.3847/1538-4357/ace629
Article Title

Sudden Extreme Obscuration of a Sun-like Main-sequence Star: Evolution of the Circumstellar Dust around ASASSN-21qj

ERA Journal ID1057
Article CategoryArticle
AuthorsMarshall, Jonathan P., Ertel, Steve, Kemper, Francisca, Del Burgo, Carlos, Otten, Gilles P. P. L., Scicluna, Peter, Zeegers, Sascha T., Ribas, Álvaro and Morata, Oscar
Journal TitleThe Astrophysical Journal: an international review of astronomy and astronomical physics
Journal Citation954 (2)
Article Number140
Number of Pages10
Year2023
PublisherIOP Publishing
Place of PublicationUnited States
ISSN0004-637X
1538-4357
Digital Object Identifier (DOI)https://doi.org/10.3847/1538-4357/ace629
Web Address (URL)https://iopscience.iop.org/article/10.3847/1538-4357/ace629/meta
AbstractASASSN-21qj is a distant Sun-like star that recently began an episode of deep dimming events after no prior recorded variability. Here we examine archival and newly obtained optical and near-infrared data of this star. The deep aperiodic dimming and absence of previous infrared excess are reminiscent of KIC 8462852 (Boyajian’s Star). The observed occultations are consistent with a circumstellar cloud of submicron-sized dust grains composed of amorphous pyroxene, with a minimum mass of 1.50 ± 0.04 × 10?9 M ? derived from the deepest occultations, and a minimum grain size of 0.29 ? 0.18 + 0.01 ? m assuming a power-law size distribution. We further identify the first evidence of near-infrared excess in this system from NEOWISE 3.4 and 4.6 ?m observations. The excess emission implies a total circumstellar dust mass of around 10?6 M ?, comparable to the extreme, variable disks associated with terrestrial planet formation around young stars. The quasiperiodic recurrence of deep dips and the inferred dust temperature (ranging from 1800 to 700 K across the span of observations) independently point to an orbital distance of ?0.2 au for the dust, supporting the occulting material and excess emission being causally linked. The origin of this extended, opaque cloud is surmised to be the breakup of one or more exocometary bodies.
KeywordsSolar analogs; Circumstellar dust; Exocomets
ANZSRC Field of Research 20205101. Astronomical sciences
Byline AffiliationsAcademia Sinica Institute of Astronomy and Astrophysics, Taiwan
Centre for Astrophysics
University of Arizona, United States
Institute of Space Sciences, Spain
Catalan Institution for Research and Advanced Studies (ICREA), Spain
Institute of Space Studies of Catalonia (IEEC), Spain
National Institute of Astrophysics Optics and Electronics, Mexico
European Southern Observatory (ESO), Chile
European Space Agency, France
University of Cambridge, United Kingdom
Permalink -

https://research.usq.edu.au/item/z2656/sudden-extreme-obscuration-of-a-sun-like-main-sequence-star-evolution-of-the-circumstellar-dust-around-asassn-21qj

Log in to edit

Download files

Published Version
stad2381.pdf
License: CC BY 4.0
File access level: Anyone

  • 27
    total views
  • 0
    total downloads
  • 2
    views this month
  • 0
    downloads this month

Export as

Related outputs

A mixed stirring mechanism for debris discs with giant and dwarf planetary perturbations
Munoz-Gutierrez, Marco A., Marshall, Jonathan P. and Peimbert, Antonio. 2023. "A mixed stirring mechanism for debris discs with giant and dwarf planetary perturbations." Monthly Notices of the Royal Astronomical Society. 520 (3), pp. 3218-3228. https://doi.org/10.1093/mnras/stad218
Stirred but not shaken: a multiwavelength view of HD 16743's debris disc
Marshall, Jonathan P, Milli, J, Choquet, E, Del Burgo, C, Kennedy, G M, Kemper, F, Wyatt, M, Kral, Q and Soummer, R. 2023. "Stirred but not shaken: a multiwavelength view of HD 16743's debris disc." Monthly Notices of the Royal Astronomical Society. 521 (4), pp. 5940-5951. https://doi.org/10.1093/mnras/stad913
Evidence for the Disruption of a Planetary System During the Formation of the Helix Nebulaa
Marshall, Jonathan P., Ertel, Steve, Birtcil, Eric, Villaver, Eva, Kemper, Francisca, Boffin, Henri, Scicluna, Peter and Kamath, Devika. 2023. "Evidence for the Disruption of a Planetary System During the Formation of the Helix Nebulaa." The Astronomical Journal. 165 (1). https://doi.org/10.3847/1538-3881/ac9d90
Multi-wavelength aperture polarimetry of debris disc host stars
Marshall, Jonathan P, Cotton, Daniel V, Bott, Kimberly, Bailey, Jeremy, Kedziora-Chudczer, Lucyna and Brown, Emma. 2023. "Multi-wavelength aperture polarimetry of debris disc host stars." Monthly Notices of the Royal Astronomical Society. 522 (2), pp. 2777-2800. https://doi.org/10.1093/mnras/stad979
The high-albedo, low polarization disk around HD 114082 that harbors a Jupiter-sized transiting planet: Constraints from VLT/SPHERE completed with TESS, Gaia, and radial velocities
Engler, N., Milli, J., Gratton, R., Ulmer-Moll, S., Vigan, A., Lagrange, A. -M., Kiefer, F., Rubini, P., Grandjean, A., Schmid, H. M. and Marshall, J. P.. 2023. "The high-albedo, low polarization disk around HD 114082 that harbors a Jupiter-sized transiting planet: Constraints from VLT/SPHERE completed with TESS, Gaia, and radial velocities." Astronomy and Astrophysics: a European journal. 672. https://doi.org/10.1051/0004-6361/202244380
Comprehensive Analysis of HD 105, A Young Solar System Analog
Marshall, J. P., Milli, J., Choquet, E., del Burgo, C., Kennedy, G. M., Matra, L., Ertel, S. and Boccaletti, A.. 2018. "Comprehensive Analysis of HD 105, A Young Solar System Analog." The Astrophysical Journal: an international review of astronomy and astronomical physics. 869 (1), pp. 1-12. https://doi.org/10.3847/1538-4357/aaec6a
TOI-1431b/MASCARA-5b: A Highly Irradiated Ultrahot Jupiter Orbiting One of the Hottest and Brightest Known Exoplanet Host Stars
Addison, Brett C., Knudstrup, Emil, Wong, Ian, Hebrard, Guillaume, Dorval, Patrick, Snellen, Ignas, Albrecht, Simon, Bello-Arufe, Aaron, Almenara, Jose-Manuel, Boisse, Isabelle, Bonfils, Xavier, Dalal, Shweta, Demangeon, Olivier D. S., Hoyer, Sergio, Kiefer, Flavien, Santos, N. C., Nowak, Grzegorz, Luque, Rafael, Stangret, Monika, ..., McLean, Brian. 2021. "TOI-1431b/MASCARA-5b: A Highly Irradiated Ultrahot Jupiter Orbiting One of the Hottest and Brightest Known Exoplanet Host Stars." The Astronomical Journal. 162 (6), pp. 1-29. https://doi.org/10.3847/1538-3881/ac224e
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., Srinivasan, S., Trejo, A., Wallstrom, S. H. J., Wouterloot, J. G. A., Cami, J., Greaves, J., He, Jinhua, Hoai, D. T., Kim, Hyosun, Jones, O. C., Shinnaga, H., Clark, C. J. R., Dharmawardena, T., Holland, W., Imai, H., van Loon, J. Th., ..., Zijlstra, A. A.. 2022. "The Nearby Evolved Stars Survey II: Constructing a volume-limited sample and first results from the James Clerk Maxwell Telescope." Monthly Notices of the Royal Astronomical Society. 512 (1), pp. 1091-1110. https://doi.org/10.1093/mnras/stab2860
LMT/AzTEC observations of Vega
Marshall, J P, Chavez-Dagostino, M, Sanchez-Arguelles, D, Matra, L, Del Burgo, C, Kemper, F, Bertone, E, Dent, W R F, Vega, O, Wilson, G, Gómez-Ruiz, A and Montaña, A. 2022. "LMT/AzTEC observations of Vega." Monthly Notices of the Royal Astronomical Society. 514 (3), pp. 3815-3820. https://doi.org/10.1093/mnras/stac1510
The SHARDDS survey: limits on planet occurrence rates based on point sources analysis via the Auto-RSM framework
Dahlqvist, C. -H., Milli, J., Absil, O., Cantalloube, F., Matra, L., Choquet, E., del Burgo, C., Marshall, J.P., Wyatt, M. and Ertel, S.. 2022. "The SHARDDS survey: limits on planet occurrence rates based on point sources analysis via the Auto-RSM framework." Astronomy and Astrophysics: a European journal. 666. https://doi.org/10.1051/0004-6361/202244145
Polarization of hot Jupiter systems: a likely detection of stellar activity and a possible detection of planetary polarization
Bailey, Jeremy, Bott, Kimberly, Cotton, Daniel V., Kedziora-Chudczer, Lucyna, Zhao, Jinglin, Evensberget, Dag, Marshall, Jonathan P., Wright, Duncan and Lucas, P. W.. 2021. "Polarization of hot Jupiter systems: a likely detection of stellar activity and a possible detection of planetary polarization." Monthly Notices of the Royal Astronomical Society. 502 (2), pp. 2331-2345. https://doi.org/10.1093/mnras/stab172
Resolved Imaging of the AR Puppis Circumbinary Disk
Ertel, S., Kamath, D., Hillen, M., van Winckel, H., Okumura, J., Manick, R., Boffin, H. M. J., Milli, J., Bertrang, G. H.-M., Guzman-Ramirez, L., Horner, J., Marshall, J. P., Scicluna, P., Vaz, A., Villaver, E., Wesson, R. and Xu, S.. 2019. "Resolved Imaging of the AR Puppis Circumbinary Disk." The Astronomical Journal. 157 (3), pp. 1-13. https://doi.org/10.3847/1538-3881/aafe04
The Polarization of the Planet-Hosting WASP-18 System
Bott, Kimberly, Bailey, Jeremy, Cotton, Daniel V., Kedziora-Chudczer, Lucyna, Marshall, Jonathan P. and Meadows, Victoria S.. 2018. "The Polarization of the Planet-Hosting WASP-18 System." The Astronomical Journal. 156 (6), pp. 1-16. https://doi.org/10.3847/1538-3881/aaed20
The polarization of HD 189733
Bott, Kimberly, Bailey, Jeremy, Kedziora-Chudczer, Lucyna, Cotton, Daniel V., Lucas, P. W., Marshall, Jonathan P. and Hough, J. H.. 2016. "The polarization of HD 189733." Monthly Notices of the Royal Astronomical Society: Letters. 459 (1), pp. L109-L113. https://doi.org/10.1093/mnrasl/slw046
Polarization Measurements of Hot Dust Stars and the Local Interstellar Medium
Marshall, J. P., Cotton, D. V., Bott, K., Ertel, S., Kennedy, G. M., Wyatt, M. C., Del Burgo, C., Absil, O., Bailey, J. and Kedziora-Chudczer, L.. 2016. "Polarization Measurements of Hot Dust Stars and the Local Interstellar Medium." The Astrophysical Journal: an international review of astronomy and astronomical physics. 825 (2), pp. 1-11. https://doi.org/10.3847/0004-637X/825/2/124
The linear polarization of Southern bright stars measured at the parts-per-million level
Cotton, Daniel V., Bailey, Jeremy, Kedziora-Chudczer, Lucyna, Bott, Kimberly, Lucas, P. W., Hough, J. H. and Marshall, Jonathan P.. 2016. "The linear polarization of Southern bright stars measured at the parts-per-million level." Monthly Notices of the Royal Astronomical Society. 455 (2), pp. 1607-1628. https://doi.org/10.1093/mnras/stv2185
Erratum: The linear polarization of Southern bright stars measured at the parts-per-million level
Cotton, Daniel V., Bailey, Jeremy, Kedziora-Chudczer, Lucyna, Bott, Kimberly, Lucas, P. W., Hough, J. H. and Marshall, Jonathan P.. 2016. "Erratum: The linear polarization of Southern bright stars measured at the parts-per-million level." Monthly Notices of the Royal Astronomical Society. 460 (1), p. 18. https://doi.org/10.1093/mnras/stw978
Correlations between the stellar, planetary, and debris components of exoplanet systems observed by Herschel
Marshall, J. P., Moro-Martin, A., Eiroa, C., Kennedy, G., Mora, A., Sibthorpe, B., Lestrade, J. -F., Maldonado, J., Sanz-Forcada, J., Wyatt, M. C., Matthews, B., Horner, J., Montesinos, B., Bryden, G., Del Burgo, C., Greaves, J. S., Ivison, R. J., Meeus, G., Olofsson, G., ..., White, G. J.. 2014. "Correlations between the stellar, planetary, and debris components of exoplanet systems observed by Herschel." Astronomy and Astrophysics: a European journal. 565, p. A15. https://doi.org/10.1051/0004-6361/201323058
Alignment in star-debris disc systems seen by Herschel
Greaves, J. S., Kennedy, G. M., Thureau, N., Eiroa, C., Marshall, J. P., Maldonado, J., Matthews, B. C., Olofsson, G., Barlow, M. J., Moro-Martin, A., Sibthorpe, B., Absil, O., Ardila, D. R., Booth, M., Broekhoven-Fiene, H., Brown, D. J. A., Collier Cameron, A., Del Burgo, C., Di Francesco, J., ..., Wyatt, M. C.. 2014. "Alignment in star-debris disc systems seen by Herschel." Monthly Notices of the Royal Astronomical Society: Letters. 438 (1), pp. L31-L35. https://doi.org/10.1093/mnrasl/slt153