Protoplanetary Disk: Simulated Spiral Arm vs. Observational Data

 Protoplanetary Disk: Simulated Spiral Arm vs. Observational Data

[Right] – Observations taken by the European Southern Observatory's Very Large Telescope show a protoplanetary disk around the young star MWC 758. The disk has two spiral arms that extend over 10 billion miles from the star.

[Left] – A computer model reproduces the two-spiral-arm structure; the "x" is the location of a putative planet. The planet, which cannot be seen directly, probably excites the two spiral arms.

Credits

NASA, ESA, ESO, M. Benisty et al. (University of Grenoble), R. Dong (Lawrence Berkeley National Laboratory), and Z. Zhu (Princeton University)

About The Object
Object Name MWC 758
Object Description Young star with protoplanetary disk
R.A. Position 05h 30m 27.53s
Dec. Position 25° 19' 57.08"
Constellation Taurus
Distance 650 light-years (200 parsecs)
About The Data
Data Description The science team comprises R. Dong (Lawrence Berkeley National Laboratory), and Z. Zhu, R. Rafikov, and J. Stone (Princeton University). The VLT image of MWC 758 is credited to NASA, ESA, ESO, M. Benisty et al. (University of Grenoble), R. Dong (Lawrence Berkeley National Laboratory), and Z. Zhu (Princeton University).
Instrument ESO/VLT>SPHERE
Exposure Dates December 5, 2014, and March 3, 2015
About The Image
Compass Image Protoplanetary Disk: Simulated Spiral Arm vs. Observational Data
About The Object
Object Name A name or catalog number that astronomers use to identify an astronomical object.
Object Description The type of astronomical object.
R.A. Position Right ascension – analogous to longitude – is one component of an object's position.
Dec. Position Declination – analogous to latitude – is one component of an object's position.
Constellation One of 88 recognized regions of the celestial sphere in which the object appears.
Distance The physical distance from Earth to the astronomical object. Distances within our solar system are usually measured in Astronomical Units (AU). Distances between stars are usually measured in light-years. Interstellar distances can also be measured in parsecs.
Dimensions The physical size of the object or the apparent angle it subtends on the sky.
About The Data
Data Description
  • Proposal: A description of the observations, their scientific justification, and the links to the data available in the science archive.
  • Science Team: The astronomers who planned the observations and analyzed the data. "PI" refers to the Principal Investigator.
Instrument The science instrument used to produce the data.
Exposure Dates The date(s) that the telescope made its observations and the total exposure time.
Filters The camera filters that were used in the science observations.
About The Image
Image Credit The primary individuals and institutions responsible for the content.
Publication Date The date and time the release content became public.
Color Info A brief description of the methods used to convert telescope data into the color image being presented.
Orientation The rotation of the image on the sky with respect to the north pole of the celestial sphere.