SAO 206462 (also known as HD 135344B) is a young Herbig F star in the constellation Lupus with a prominent circumstellar protoplanetary disk. The Subaru Telescope captured remarkable images of this system, revealing never-before-seen details of a solar system in the making:
- Astronomers have detected far-infrared energy from it, suggesting a ring of warm dust encircling the star. This dust, estimated to be less than 9 million years old, contains organic matter.
- The disk around SAO 206462 exhibits a dip in its infrared excess near 10 μm, indicating a pre-transitional disk structure with an inner cavity or gap.
- Multi-epoch observations have revealed spiral arm patterns in the disk, which can provide insights into the formation mechanisms of these spiral structures. The spiral arms could be driven by the presence of a companion object perturbing the disk.
4. Recent high-resolution observations from the James Webb Space Telescope have captured detailed images of the spiral arm structure in the SAO 206462 protoplanetary disk, providing new data for further analysis and comparison with other systems exhibiting similar spiral morphologies.
Summary
SAO 206462 is a well-studied pretransitional disk system with prominent spiral arm features, making it an important target for understanding the dynamics and evolution of protoplanetary disks and potential planet formation processes.
References:
JWST/NIRCam Imaging of Young Stellar Objects. II. Deep Constraints on Giant Planets and a Planet Candidate Outside of the Spiral Disk Around SAO 206462
Gabriele Cugno, Jarron Leisenring, Kevin R. Wagner, Camryn Mullin, Roubing Dong, Thomas Greene, Doug Johnstone, Michael R. Meyer, Schuyler G. Wolff, Charles Beichman, Martha Boyer, Scott Horner, Klaus Hodapp, Doug Kelly, Don McCarthy, Thomas Roellig, George Rieke, Marcia Rieke, John Stansberry, Erick Young
https://arxiv.org/abs/2401.02834v1
| Subjects: | Earth and Planetary Astrophysics (astro-ph.EP); Solar and Stellar Astrophysics (astro-ph.SR) |
| Cite as: | arXiv:2401.02834 [astro-ph.EP] |
| (or arXiv:2401.02834v1 [astro-ph.EP] for this version) | |
| https://doi.org/10.48550/arXiv.2401.02834 |
JWST/NIRCam IMAGING OF YOUNG STELLAR OBJECTS. I. CONSTRAINTS ON PLANETS EXTERIOR TO THE SPIRAL DISK AROUND MWC 758
Kevin Wagner, Jarron Leisenring, Gabriele Cugno, Camryn Mullin, Ruobing Dong, Schuyler G. Wolff, Thomas Greene, Doug Johnstone, Michael R. Meyer, Charles Beichman, Martha Boyer, Scott Horner, Klaus Hodapp, Doug Kelly, Don McCarthy, Tom Roellig, George Rieke, Marcia Rieke, Michael Sitko, John Stansberry, & Erick Young
https://arxiv.org/pdf/2401.02830.pdf
Revealing the Structure of a Pre-Transitional Disk: The Case of the Herbig F Star SAO 206462 (HD 135344B)
Grady, C. & Schneider, Glenn & Sitko, Michael & Williger, G. & Hamaguchi, Kenji & Brittain, Sean & Ablordeppey, K. & Apai, Daniel & Beerman, Lori & Carpenter, W. & Collins, K. & Fukagawa, M. & Hammel, H. & Henning, Th & Hines, D. & Kimes, R. & Lynch, D. & Ménard, F. & Pearson, R. & Clampin
- June 2009
- The Astrophysical Journal 699(2):1822
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DOI:10.1088/0004-637X/699/2/1822
- Source
- OAI
The Astrophysical Journal. 699. 1822. 10.1088/0004-637X/699/2/1822.
Spiral Arm Pattern Motion in the SAO 206462 Protoplanetary Disk
Xie, Chengyan & Ren, Bin & Dong, Ruobing & Pueyo, Laurent & Ruffio, Jean-Baptiste & Fang, Taotao & Mawet, Dimitri & Stolker, Tomas.
- January 2021
- The Astrophysical Journal Letters 906(2):L9
- January 2021
- 906(2):L9
The Astrophysical Journal. 906. L9. 10.3847/2041-8213/abd241.
An M Dwarf Companion and Its Induced Spiral Arms in the
HD 100453 Protoplanetary Disk
Ruobing Dong, Zhaohuan Zhu, Jeffrey Fung, Roman Rafikov, Eugene Chiang,
Kevin Wagner
https://arxiv.org/pdf/1512.04949.pdf
Young star has spiral arm system
https://www.urban-astronomer.com/news-and-updates/young-star-has-spiral-arm-system/
Circular Astronomy 