J/A+A/688/A120 BD-14 3065b (TOI-4987b) 2D spectra (Subjak+, 2024)
Evolution of BD-14 3065b (TOI-4987b) from giant planet to brown dwarf as
possible evidence of deuterium burning at old stellar ages.
Subjak J., Latham D.W., Quinn S.N., Berlind P., Calkins M.L., Esquerdo G.A.,
Brahm R., Caballero J.A., Collins K.A., Guenther E., Janik J., Kabath P.,
Schwarz R.P., Tan T.-G., Vanzi L., Zambelli R., Ziegler C., Jenkins J.M.,
Mireles I., Seager S., Shporer A., Striegel S., Winn J.N.
<Astron. Astrophys. 688, A120 (2024)>
=2024A&A...688A.120S 2024A&A...688A.120S (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Exoplanets ; Spectroscopy ;
Radial velocities ; Optical
Keywords: techniques: photometric - techniques: radial velocities -
techniques: spectroscopic - planets and satellites: gaseous planets -
brown dwarfs
Abstract:
The present study confirms BD-14 3065b as a transiting planet-brown
dwarf in a triple-star system, with a mass near the deuterium-burning
boundary. BD-14 3065b has the largest radius observed within the
sample of giant planets and brown dwarfs around post-main sequence
stars. Its orbital period is 4.3 days and it transits a subgiant
F-type star with a mass of M*=1.41±0.05M☉, a radius of
R*=2.35±0.08R☉, an effective temperature of Teff=6935±90K,
and a metallicity of -0.34±0.05dex. By combining TESS photometry
with high-resolution spectra acquired with the TRES and Pucheros+
spectrographs, we measured a mass of Mp = 12.37±0.92MJup and a
radius of Rp = 1.926±0.094RJup. Our discussion of potential
processes that could be responsible for the inflated radius led us to
conclude that deuterium burning is a plausible explanation for the
heating taking place in BD-14 3065b's interior. Detections of the
secondary eclipse with TESS photometry enabled a precise determination
of the eccentricity, ep=0.066±0.011, and reveal that BD-14 3065b has
a brightness temperature of 3520±130K. With its unique
characteristics, BD-14 3065b presents an excellent opportunity to
study its atmosphere via thermal emission spectroscopy.
Description:
We provide 2D spectra for BD-14 3065 (TOI-4987) from TRES and
Pucheros+ spectrographs. The data are reduced as described in the
paper.
Objects:
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RA (2000) DE Designation(s)
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10 14 40.72 -15 38 34.3 TOI-4987 = TIC 0293607057 = BD-14 3065
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
list.dat 125 93 List of fits 2D spectra
fits/* . 93 Individual fits 2D spectra
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Byte-by-byte Description of file: list.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- Nx Number of pixels along X-axis
6- 7 I2 --- Ny Number of pixels along Y-axis
9- 34 A26 "datime" Obs.date Observation date
36- 38 I3 Kibyte size Size of FITS file
40- 97 A58 --- FileName Name of FITS file, in subdirectory fits
99-125 A27 --- Title Title of the FITS file
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History:
From Johny Subjak, johnysubjak(at)gmail.com
Acknowledgements:
J.S. would like to acknowledge the support from GACR grant 23-06384O.
P.K. is grateful for the support from grant LTT-20015. L.V.
acknowledges ANID projects Fondecyt n. 1211162, QUIMAL ASTRO20-0025,
and BASAL FB210003. R.B. acknowledges support from FONDECYT Project
11200751 and additional support from ANID - Millennium Science
Initiative - ICN12_009. J.A.C. acknowledges financial support from
the Spanish Agencia Estatal de Investigacion
(AEI/10.13039/501100011033) of the Ministerio de Ciencia e Innovacion
and the European Regional Development Fund 'A way of making
Europe' through project PID2022-137241NB-C42. Funding for the TESS
mission is provided by NASA's Science Mission Directorate. We
acknowledge the use of public TESS data from pipelines at the TESS
Science Office and at the TESS Science Processing Operations Center.
Resources supporting this work were provided by the NASA High-End
Computing (HEC) Program through the NASA Advanced Supercomputing (NAS)
Division at Ames Research Center for the production of the SPOC data
products. This paper includes data collected by the TESS mission that
are publicly available from the Mikulski Archive for Space Telescopes
(MAST). The PLATOSpec team would like to thank observers Marek Skarka,
Jiri Srba, Zuzana Balkova, Petr Skoda and Ludek Rezba. This
publication was produced within the framework of institutional support
for the development of the research organization of Masaryk
University. This research has made use of the Simbad and Vizier
databases, operated at the centre de Donnees Astronomiques de
Strasbourg (CDS), and of NASA's Astrophysics Data System
Bibliographic Services (ADS). This work has made use of data from the
European Space Agency (ESA) mission Gaia
(https://www.cosmos.esa.int/gaia), processed by the Gaia Data
Processing and Analysis Consortium (DPAC,
https://www.cosmos.esa.int/web/ gaia/dpac/consortium). Funding for the
DPAC has been provided by national institutions, in particular, the
institutions participating in the Gaia Multilateral Agreement.
(End) Patricia Vannier [CDS] 03-Aug-2024