Circular Astronomy

Dimethyl Ether Detected in MWC 480 Protoplanetary Disk

Dimethy Ether was first synthesised in 1835. It is expected to be used in biofuels in the future.

The MWC 480 protoplanetary disk is a subject of significant interest due to its complex structure and potential insights into planet formation processes.

Star Characteristics

  • MWC 480 is a young Herbig Ae star located approximately 500 light-years away in the Taurus-Auriga Star-Forming Region. It is about 7 million years old and has a mass of approximately 1.7 to 2.3 times that of the Sun.
  • The star has a radius of about 1.67 times that of the Sun and a luminosity of 11.2 times solar luminosity. Its surface temperature is around 8250 K.
  • MWC 480 is surrounded by a protoplanetary disk that is inclined at about 37° with respect to our line of sight.

Protoplanetary Disk Features

  • The disk around MWC 480 has been observed using the Atacama Large Millimeter/submillimeter Array (ALMA), revealing a ring-like structure with gap-like features that are indicative of ongoing planet formation processes.
  • The disk contains complex organic molecules, including the recent detection of dimethyl ether (CH₃OCH₃), which suggests active chemical processes potentially related to the formation of life-building compounds.
O (Oxyten) in Red Color

Kinematic and Chemical Properties

  • The disk exhibits kinematic substructures, which are crucial for understanding the dynamics and evolution of the disk material.
  • An unbiased ALMA spectral survey has been conducted to further explore the chemical composition of the disk, providing insights into the molecular environment surrounding MWC 480.

Overall, the MWC 480 protoplanetary disk serves as an important laboratory for studying the early stages of planet formation and the chemical processes that occur in young stellar environments. The presence of complex organic molecules and the disk’s structural features make it a key target for ongoing and future astronomical studies.

References

Detection Of Dimethyl Ether In The Central Region Of The MWC 480 Protoplanetary Disk
Molecules with ALMA at Planet-forming Scales (MAPS XVIII): Kinematic Substructures in the Disks of HD 163296 and MWC 480

Richard Teague, Jaehan Bae, Yuri Aikawa, Sean M. Andrews, Edwin A. Bergin, Jennifer B. Bergner, Yann Boehler, Alice S. Booth, Arthur D. Bosman, Gianni Cataldi, Ian Czekala, Viviana V. Guzmán, Jane Huang, John D. Ilee, Charles J. Law, Romane Le Gal, Feng Long, Ryan A. Loomis, François Ménard, Karin I. Öberg, Laura M. Pérez, Kamber R. Schwarz, Anibal Sierra, Catherine Walsh, David J. Wilner, Yoshihide Yamato, Ke Zhang

https://arxiv.org/abs/2109.06218

Ring structure in the MWC 480 disk revealed by ALMA★

Yao Liu, Giovanni Dipierro, Enrico Ragusa, Giuseppe Lodato, Gregory J. Herczeg, Feng Long, Daniel Harsono, Yann Boehler, Francois Menard, Doug Johnstone, Ilaria Pascucci, Paola Pinilla, Colette Salyk, Gerrit van der Plas, Sylvie Cabrit, William J. Fischer, Nathan Hendler, Carlo F. Manara, Brunella Nisini, Elisabetta Rigliaco, Henning Avenhaus1, Andrea Banzatti11 and Michael Gully-Santiago

https://www.aanda.org/articles/aa/abs/2019/02/aa34157-18/aa34157-18.html

https://arxiv.org/abs/1811.04074

An Unbiased ALMA Spectral Survey of the LkCa 15 and MWC 480 Protoplanetary Disks

Ryan A. Loomis, Karin I. Öberg, Sean M. Andrews, Edwin Bergin, Jennifer Bergner, Geoffrey A. Blake, L. Ilsedore Cleeves, Ian Czekala, Jane Huang, Romane Le Gal, Francois Ménard, Jamila Pegues, Chunhua Qi, Catherine Walsh, Jonathan P. Williams, and David J. Wilner


https://iopscience.iop.org/article/10.3847/1538-4357/ab7cc8

Catalog of Circumstellar Disks

https://www.circumstellardisks.org/show.php?id=101


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