Glancing through the debris disk: Photometric analysis of de Boo with CHEOPS
Artikel i vetenskaplig tidskrift, 2023

Aims. DE Boo is a unique system, with an edge-on view through the debris disk around the star. The disk, which is analogous to the Kuiper belt in the Solar System, was reported to extend from 74 to 84 AU from the central star. The high photometric precision of the Characterising Exoplanet Satellite (CHEOPS) provided an exceptional opportunity to observe small variations in the light curve due to transiting material in the disk. This is a unique chance to investigate processes in the debris disk. Methods. Photometric observations of DE Boo of a total of four days were carried out with CHEOPS. Photometric variations due to spots on the stellar surface were subtracted from the light curves by applying a two-spot model and a fourth-order polynomial. The photometric observations were accompanied by spectroscopic measurements with the 1m RCC telescope at Piszkésteto and with the SOPHIE spectrograph in order to refine the astrophysical parameters of DE Boo. Results. We present a detailed analysis of the photometric observation of DE Boo. We report the presence of nonperiodic transient features in the residual light curves with a transit duration of 0.3-0.8 days. We calculated the maximum distance of the material responsible for these variations to be 2.47 AU from the central star, much closer than most of the mass of the debris disk. Furthermore, we report the first observation of flaring events in this system. Conclusions. We interpreted the transient features as the result of scattering in an inner debris disk around DE Boo. The processes responsible for these variations were investigated in the context of interactions between planetesimals in the system.

Starspots

Circumstellar matter

Techniques: photometric

Methods: data analysis

Stars: flare

Författare

Boldog

Eötvös Loránd University (ELTE)

Magyar Tudomanyos Akademia

Research Centre For Astronomy and Earth Sciences

Gy M. Szabó

Eötvös Loránd University (ELTE)

L. Kriskovics

Research Centre For Astronomy and Earth Sciences

Magyar Tudomanyos Akademia

A. Brandeker

Stockholms universitet

F. Kiefer

Observatoire de Paris

Institut d 'Astrophysique de Paris

A. Bekkelien

Université de Genève

P. Guterman

CS20330

Laboratoire d'Astrophysique de Marseille

G. Olofsson

Stockholms universitet

A.E. Simon

Universität Bern

D. Gandolfi

Universita degli Studi di Torino

L. M. Serrano

Universita degli Studi di Torino

T. G. Wilson

University of St Andrews

S. G. Sousa

Universidade do Porto

A. L. des Etangs

Institut d 'Astrophysique de Paris

Y. Alibert

Universität Bern

R. Alonso

Universidad de la Laguna

Instituto de Astrofísica de Canarias

G. Anglada

Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)

Consejo Superior de Investigaciones Científicas (CSIC)

T. Bandy

Universität Bern

T. Bárczy

Admatis

D. Barrado

Centro de Astrobiologia (CAB)

S.C.C. Barros

Universidade do Porto

W. Baumjohann

Institut fur Weltraumforschung

M. Beck

Université de Genève

T. Beck

Universität Bern

W. Benz

Universität Bern

N. Billot

Université de Genève

X. Bonfils

Institut de Planétologie et d’Astrophysique de Grenoble (IPAG)

C. Broeg

Universität Bern

M. Buder

Deutsches Zentrums für Luft- und Raumfahrt (DLR)

J. Cabrera

Deutsches Zentrums für Luft- und Raumfahrt (DLR)

S. Charnoz

Institut de Physique du Globe de Paris

A. Collier Cameron

University of St Andrews

C. Corral Van Damme

Europeiska rymdorganisationen (ESA)

Szilard Csizmadia

Deutsches Zentrums für Luft- und Raumfahrt (DLR)

M. B. Davies

Lunds universitet

A. Deline

Université de Genève

M. Deleuil

Laboratoire d'Astrophysique de Marseille

L. Delrez

Universite de Liège

O. Demangeon

Universidade do Porto

B.O. Demory

Universität Bern

D. Ehrenreich

Université de Genève

Anders Erikson

Deutsches Zentrums für Luft- und Raumfahrt (DLR)

J. Farinato

Istituto nazionale di astrofisica (INAF)

A. Fortier

Universität Bern

L. Fossati

Institut fur Weltraumforschung

Malcolm Fridlund

Chalmers, Rymd-, geo- och miljövetenskap, Astronomi och plasmafysik

Universiteit Leiden

Michaël Gillon

Universite de Liège

M. Gudel

Universität Wien

Kevin Heng

Universität Bern

The University of Warwick

S. Hoyer

Laboratoire d'Astrophysique de Marseille

K. Isaak

Europeiska rymdorganisationen (ESA)

L.L. Kiss

Magyar Tudomanyos Akademia

Eötvös Loránd University (ELTE)

Research Centre For Astronomy and Earth Sciences

J. Laskar

Observatoire de Paris

M. Lendl

Université de Genève

C. Lovis

Université de Genève

D. Magrin

Istituto nazionale di astrofisica (INAF)

P. Maxted

Keele University

M. Mecina

Universität Wien

Valerio Nascimbeni

Istituto nazionale di astrofisica (INAF)

R. Ottensamer

Universität Wien

I. Pagano

Istituto nazionale di astrofisica (INAF)

E. Palle

Instituto de Astrofísica de Canarias

G. Peter

Deutsches Zentrums für Luft- und Raumfahrt (DLR)

Giampaolo P. Piotto

Università di Padova

Istituto nazionale di astrofisica (INAF)

D. Pollacco

The University of Warwick

D. Queloz

University of Cambridge

Eidgenössische Technische Hochschule Zürich (ETH)

Roberto Ragazzoni

Istituto nazionale di astrofisica (INAF)

Università di Padova

N. Rando

Europeiska rymdorganisationen (ESA)

H. Rauer

Freie Universität Berlin

Technische Universität Berlin

Deutsches Zentrums für Luft- und Raumfahrt (DLR)

I. Ribas

Consejo Superior de Investigaciones Científicas (CSIC)

Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)

N. C. Santos

Universidade do Porto

Gaetano Scandariato

Istituto nazionale di astrofisica (INAF)

D. Segransan

Université de Genève

A. M.S. Smith

Deutsches Zentrums für Luft- und Raumfahrt (DLR)

Manfred B. Steller

Institut fur Weltraumforschung

N. Thomas

Universität Bern

S. Udry

Université de Genève

V. Van Grootel

Universite de Liège

N. A. Walton

University of Cambridge

Astronomy and Astrophysics

0004-6361 (ISSN) 1432-0746 (eISSN)

Vol. 671 A127

Ämneskategorier (SSIF 2011)

Astronomi, astrofysik och kosmologi

Övrig annan teknik

Annan fysik

DOI

10.1051/0004-6361/202245101

Mer information

Senast uppdaterat

2025-04-23