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posted by janrinok on Sunday January 01 2017, @07:53AM   Printer-friendly
from the If-you-liked-it,-then-you-should-have-put-a-ring-on-it dept.

An international team of researchers reports the discovery of a series of concentric rings in the debris disk around a young nearby star known as HIP 73145. These unusual substructures could provide new details about the evolution of circumstellar disks around young stars. The findings were presented in a paper published Dec. 22 on arXiv.org.

Located some 400 light years away, HIP 73145 (also known as HD 131835) is a 15-million-year-old star with a spectral type of A2IV. It belongs to the Upper Centaurus Lupus (UCL) moving group, which is part of the Scorpius–Centaurus association. The star is about 70 percent more massive than the sun and has a radius of 1.38 solar radii. Importantly, HIP 73145 is known to host a debris disk with a radius of approximately 96 AU.

HIP 73145's disk was first detected in scattered light in the near-infrared, and at far-infrared wavelengths in 2015. However, no substructures were spotted during these observations. This year also, a team of astronomers led by Markus Feldt of the Max Planck Institute for Astronomy in Heidelberg, Germany, has conducted a multi-wavelength observational campaign which allowed them to distinguish concentric rings in the star's debris disk.

These observations were carried out in May 2015 using the European Southern Observatory's extreme adaptive optics coronagraphic instrument, known as the Spectro-Polarimetric High-contrast Exoplanet REsearch (SPHERE). They were part of the SpHere INfrared survey for Exoplanets (SHINE) campaign aimed at the detection and characterization of extrasolar planets.


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  • (Score: -1, Troll) by Anonymous Coward on Sunday January 01 2017, @08:06AM

    by Anonymous Coward on Sunday January 01 2017, @08:06AM (#448069)

    Get an intern over here to change the diaper.

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