uu.seUppsala University Publications
Change search
ReferencesLink to record
Permanent link

Direct link
Discovery of a low-mass companion inside the debris ring surrounding the F5V star HD 206893
European Southern Observatory (ESO), Chile.
European Southern Observatory (ESO), Chile.
Universidad de Chile, Chile.
Jet Propulsion Laboratory/California Institute of Technology, USA.
Show others and affiliations
2017 (English)In: Astronomy and Astrophysics, ISSN 0004-6361, E-ISSN 1432-0746, Vol. 597, no L2, 1-6 p.Article in journal (Refereed) Published
Abstract [en]

Aims. Uncovering the ingredients and the architecture of planetary systems is a very active field of research that has fuelled many new theories on giant planet formation, migration, composition, and interaction with the circumstellar environment. We aim at discovering and studying new such systems, to further expand our knowledge of how low-mass companions form and evolve. Methods. We obtained high-contrast H-band images of the circumstellar environment of the F5V star HD 206893, known to host a debris disc never detected in scattered light. These observations are part of the SPHERE High Angular Resolution Debris Disc Survey (SHARDDS) using the InfraRed Dual-band Imager and Spectrograph (IRDIS) installed on VLT/SPHERE.

Results. We report the detection of a source with a contrast of 3.6 × 10−5 in the H-band, orbiting at a projected separation of 270 milliarcsecond or 10 au, corresponding to a mass in the range 24 to 73MJup for an age of the system in the range 0.2 to 2 Gyr. The detection was confirmed ten months later with VLT/NaCo, ruling out a background object with no proper motion. A faint extended emission compatible with the disc scattered light signal is also observed.

Conclusions. The detection of a low-mass companion inside a massive debris disc makes this system an analog of other young planetary systems such as β Pictoris, HR 8799 or HD 95086 and requires now further characterisation of both components to understand their interactions.

Place, publisher, year, edition, pages
2017. Vol. 597, no L2, 1-6 p.
National Category
Engineering and Technology Astronomy, Astrophysics and Cosmology
URN: urn:nbn:se:uu:diva-309599DOI: 10.1051/0004-6361/201629908OAI: oai:DiVA.org:uu-309599DiVA: diva2:1052238
Available from: 2016-12-05 Created: 2016-12-05 Last updated: 2016-12-19

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Forsberg, PontusKarlsson, Mikael
By organisation
Applied Materials Sciences
In the same journal
Astronomy and Astrophysics
Engineering and TechnologyAstronomy, Astrophysics and Cosmology

Search outside of DiVA

GoogleGoogle Scholar

Altmetric score

Total: 116 hits
ReferencesLink to record
Permanent link

Direct link