DISCOVERY of AN EDGE-ON DEBRIS DISK with A DUST RING and AN OUTER DISK WING-TILT ASYMMETRY

Markus Kasper, Daniel Apai, Kevin Wagner, Massimo Robberto

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Using Very Large Telescope/SPHERE near-infrared dual-band imaging and integral field spectroscopy, we discovered an edge-on debris disk around the 17 Myr old A-type member of the Scorpius-Centaurus OB association HD 110058. The edge-on disk can be traced to about 0.″6 or 65 AU projected separation. In its northern and southern wings, the disk shows at all wavelengths two prominent, bright, and symmetrically placed knots at 0.″3 or 32 AU from the star. We interpret these knots as a ring of planetesimals whose collisions may produce most of the dust observed in the disk. We find no evidence for a bow in the disk, but we identify a pair of symmetric, hooklike features in both wings. Based on similar features in the Beta Pictoris disk, we propose that this wing-tilt asymmetry traces either an outer planetesimal belt that is inclined with respect to the disk midplane or radiation-pressure-driven dust blown out from a yet unseen inner belt that is inclined with respect to the disk midplane. The misaligned inner or outer disk may be a result of interaction with a yet unseen planet. Overall, the disk geometry resembles the nearby disk around Beta Pictoris, albeit seen at smaller radial scales.

Original languageEnglish (US)
Article numberL33
JournalAstrophysical Journal Letters
Volume812
Issue number2
DOIs
StatePublished - Oct 20 2015

Fingerprint

tilt
wings
asymmetry
planetesimal
dust
near infrared
planet
collision
spectroscopy
wavelength
geometry
protoplanets
radiation pressure
bows
debris
planets
telescopes
stars
collisions
rings

Keywords

  • circumstellar matter
  • disk interactions
  • planet
  • protoplanetary disks
  • stars: individual (Beta Pictoris, HD 110058)

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

DISCOVERY of AN EDGE-ON DEBRIS DISK with A DUST RING and AN OUTER DISK WING-TILT ASYMMETRY. / Kasper, Markus; Apai, Daniel; Wagner, Kevin; Robberto, Massimo.

In: Astrophysical Journal Letters, Vol. 812, No. 2, L33, 20.10.2015.

Research output: Contribution to journalArticle

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