J/A+A/690/L7 TOI-4562 light curve (Fermiano+, 2024)
The young exoplanetary system TOI-4562:
Confirming the presence of a third body in the system.
Fermiano V., Saito R.K., Ivanov V.D., Caceres C., Almeida L.A., Aires J.,
Beamin J.C., Minniti D., Ferreira T., Andrade L., Borges B.W.,
de Almeida L., Jablonski F., Schlindwein W.
<Astron. Astrophys. 690, L7 (2024)>
=2024A&A...690L...7F 2024A&A...690L...7F (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Exoplanets ; Photometry ; Optical
Keywords: planets and satellites: dynamical evolution and stability -
planets and satellites: formation - stars: activity
Abstract:
Young planetary systems represent an opportunity to investigate the
early stages of (exo)planetary formation because the gravitational
interactions have not yet significantly changed the initial
configuration of the system.
TOI-4562 b is a highly eccentric temperate Jupiter analogue orbiting a
young F7V-type star of <700Myr in age with an orbital period of
Porb∼225 days and an eccentricity of e=0.76, and is one of the
largest known exoplanets to have formed in situ.
We observed a new transit of TOI-4562 b using the 0.6-m Zeiss
telescope at the Pico dos Dias Observatory (OPD/LNA) in Minas Gerais,
Brazil, and combine our data with Transiting Exoplanet Survey
Satellite (TESS) and archive data, with the aim being to improve the
ephemerides of this interesting system.
The O-C diagram for the new ephemeris is consistent with the
presence of a giant planet in an outer orbit around TOI-4562.
TOI-4562 c is a planet with a mass of M=5.77MJup, an orbital period
of Porb=3990 days, and a semi-major axis of a=5.219AU.
We report the discovery of TOI-4562 c, the exoplanet with the longest
orbital period discovered to date via the transit timing variation
(TTV) method. The TOI-4562 system is in the process of violent
evolution with intense dynamical changes - judging by its young age
and high eccentricity - and is therefore a prime target for studies
of formation and evolution of planetary systems.
Description:
Transit of TOI-4562b observed at the Pico dos Dias Observatory
(OPD/LNA) on the night of UT November 9 2023. The table with the
lightcurve of TOI-4562 is divide in three columns: first column has
the BJD in days, second column is the relative flux and the third
column is the flux error. TOI-4562 is at coordinates
RA,Dec(J2000) = 07:28:02.41,-63:31:04. The observations were carried
out with the 0.6-m f/12.5 Zeiss telescope at the OPD/LNA, located in
the Brazilian state of Minas Gerais (22 32' 04" S, 45 34' 57" W) at an
altitude of 1,864 m above sea level.
Objects:
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RA (2000) DE Designation(s)
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07 28 02.42 -63 31 04.1 TOI-4562 = TIC 349576261
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
lc.dat 28 263 TOI-4562 light curves
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Byte-by-byte Description of file: lc.dat
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Bytes Format Units Label Explanations
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1- 14 F14.6 d BJD Barycentric Julian date
16- 21 F6.4 --- Flux Relative flux
23- 28 F6.4 --- e_Flux Relative flux error
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Acknowledgements:
Victor Fermiano, vitorfreitasfermiano(at)outlook.com
(End) Patricia Vannier [CDS] 19-Sep-2024