@article{e8db6c3eeed3437db298759f4179dce6,
title = "Narrow belt of debris around the Sco-Cen star HD 141011",
abstract = "Context. We initiated a deep-imaging survey of Scorpius-Centaurus A-F stars in 2015. These stars are predicted to host warm inner and cold outer belts of debris reminiscent of the architecture of emblematic systems such as HR 8799. Aims. We present resolved images of a ring of debris around the F5-type star HD 141011 that was observed as part of our survey. We aim to set constraints on the properties of the disk, compare them to those of other resolved debris disks in Sco-Cen, and detect companions. Methods. We obtained high-contrast coronagraphic observations of HD 141011 in 2015, 2016, and 2019 with VLT/SPHERE. We removed the stellar halo using angular differential imaging. We searched for scattered light emission from a disk in the residuals and applied a forward-modeling approach to retrieve its morphological and photometric properties. We combined our radial velocity and imaging data to derive detection probabilities for companions co-planar with the disk orientation. Results. We resolve a narrow ring of debris that extends up to ∼1.1″ (∼141 au) from the star in the IRDIS and IFS data obtained in 2016 and 2019. The disk is not detected in the 2015 data which are of poorer quality. The disks is best reproduced by models of a noneccentric ring centered on the star with an inclination of 69.1 ± 0.9°, a position angle of -24.6 ± 1.7°, and a semimajor axis of 127.5 ± 3.8 au. The combination of radial velocity and imaging data excludes brown-dwarf (M > 13.6MJup) companions coplanar with the disk from 0.1 to 0.9 au and from 20 au up to 500 au (90% probability). Conclusions. HD 141011 adds to the growing list of debris disks that are resolved in Sco-Cen. It is one of the faintest disks that are resolved from the ground and has a radial extent and fractional width (∼12.5%) reminiscent of Fomalhaut. Its moderate inclination and large semimajor axis make it a good target for the James Webb Space Telescope and should allow a deeper search for putative companions shaping the dust distribution.",
keywords = "Planetary systems, Stars: imaging, Stars: individual: HD 141011 (HIP 77432), Techniques: high angular resolution",
author = "M. Bonnefoy and J. Milli and F. Menard and P. Delorme and A. Chomez and M. Bonavita and Lagrange, {A. M.} and A. Vigan and Augereau, {J. C.} and Beuzit, {J. L.} and B. Biller and A. Boccaletti and G. Chauvin and S. Desidera and V. Faramaz and R. Galicher and R. Gratton and S. Hinkley and C. Lazzoni and E. Matthews and D. Mesa and C. Mordasini and D. Mouillet and J. Olofsson and C. Pinte",
note = "Funding Information: Acknowledgements. We thank our anonymous referees for their constructive comments which helped improving the manuscript. We thank the ESO staff for the help during the preparation of the observations and their execution. We are grateful to the SPHERE consortium for providing us with the most recent measurements of the instrument platescale and True North. We thank Aur{\'e}lia Leclerc from IPAG for fruitful discussions about the robustness of the Gaia-eDR3 and HIPPARCOS proper motion determination. We acknowledge support in France from the French National Research Agency (ANR) through project grants ANR-14-CE33-0018 and ANR-20-CE31-0012, the CNRS-D2P PICS grant, and the Programmes Nationaux de Planetologie et de Physique Stel-laire (PNP and PNPS). This project has received funding from the European Research Council (ERC) under the European Union{\textquoteright}s Horizon 2020 research and innovation programme (COBREX; grant agreement 885 593). SDe, RGr, CLa, and Dme acknowledge financial support from the ASI-INAF agreement no. 2018-16-HH.0 and from PRIN-INAF 2019 “Planetary systems at young ages (PLATEA)”. C.P. acknowledges funding from the Australian Research Council via FT170100040 and DP180104235. J.O. acknowledges support by ANID, – Millennium Science Initiative Program – NCN19_171, from the Universi-dad de Valpara{\'i}so, and from Fondecyt (grant 1180395). This work has made use of the SPHERE Data Centre, jointly operated by OSUG/IPAG (Grenoble), PYTHEAS/LAM/CeSAM (Marseille), OCA/Lagrange (Nice), Observatoire de Paris/LESIA (Paris), and Observatoire de Lyon/CRAL, and supported by a grant from Labex OSUG@2020 (Investissements d{\textquoteright}avenir – ANR10 LABX56). This publication makes use of VOSA, developed under the Spanish Virtual Observatory project supported by the Spanish MINECO through grant AyA2017-84089. V.O.S.A. has been partially updated by using funding from the European Union{\textquoteright}s Horizon 2020 Research and Innovation Programme, under Grant Agreement no. 776403 (EXOPLANETS-A). Publisher Copyright: {\textcopyright} M. Bonnefoy et al. 2021.",
year = "2021",
month = nov,
day = "1",
doi = "10.1051/0004-6361/202141848",
language = "English (US)",
volume = "655",
journal = "Astronomy and Astrophysics",
issn = "0004-6361",
publisher = "EDP Sciences",
}