J/A+A/664/A163 TOI-1807 RV and flux curves (Nardiello+, 2022)
The GAPS Programme with HARPS-N at TNG. XXXVII.
A precise density measurement of the young ultra-short period planet TOI-1807 b.
Nardiello D., Malavolta L., Desidera S., Baratella M., D'Orazi V.,
Messina S., Biazzo K., Benatti S., Damasso M., Rajpaul V. M., Bonomo A.S.,
Capuzzo Dolcetta R., Mallonn M., Cale B., Plavchan P., El Mufti M.,
Bignamini A., Borsa F., Carleo I., Claudi R., Covino E., Lanza A.F.,
Maldonado J., Mancini L., Micela G., Molinari E., Pinamonti M., Piotto G.,
Poretti E., Scandariato G., Sozzetti A., Andreuzzi G., Boschin W.,
Cosentino R., Fiorenzano A. F. M., Harutyunyan A., Knapic C., Pedani M.,
Affer L., Maggio A., Rainer M.
<Astron. Astrophys. 664, A163 (2022)>
=2022A&A...664A.163N 2022A&A...664A.163N (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Exoplanets ; Radial velocities ;
Photometry ; Optical
Keywords: planets and satellites: fundamental parameters -
stars: fundamental parameters - stars: individual: BD+39 2643 -
technique: photometric - technique: spectroscopic -
technique: radial velocities
Abstract:
Great strides have been made in recent years in the understanding of
the mechanisms involved in the formation and evolution of planetary
systems; despite this, many observational facts still do not have an
explanation. A great contribution to the study of planetary formation
processes comes from the study of young, low-mass planets, with short
orbital periods (<100 days). In the last three years, the NASA/TESS
satellite has identified many planets of this kind, and their
characterization is clearly mandatory to understand how they formed
and evolved.Within the framework of the Global Architecture of
Planetary System (GAPS) project, we performed the validation and
characterization (radius and mass) of the ultra-short period planet
TOI-1807 b, orbiting its young host star BD+39 2643 (∼300Myr) in only
13-hours. This is the youngest ultra-short period planet discovered so
far. Thanks to a joint modeling of the stellar activity and planetary
signals in the TESS light curve and in new HARPS-N radial-velocity
measurements, which were combined with accurate estimation of stellar
parameters, we validated the planetary nature of TOI-1807 b and
measured its orbital and physical parameters. By using astrometric,
photometric, and spectroscopic observations we found that BD+39 2643
is a young, active K dwarf star, member of a 300±80Myr old moving
group and that it rotates in Prot=8.8±0.1-days. This star hosts an
ultra-short period planet showing an orbital period of only
Pb=0.54937±0.00001-days. Thanks to the exquisite photometric and
spectroscopic series, and the accurate information on the stellar
activity, we measured both the radius and the mass of TOI-1807 b with
high precision, obtaining RP,b=1.37±0.09R⊕ and
MP,b=2.57±0.50M⊕. These planet parameters correspond to a
rocky planet with an Earth-like density (rhob=1.0±0.3rho⊕)
and no extended H/He envelope. From the analysis of the age-R_P
distribution for planets with well measured ages, we inferred that
TOI-1807 b may have already lost a large part of its atmosphere during
its 300Myr life.
Description:
We used HARPS-N at TNG spectroscopic series and TESS light curves to
characterize the stellar activity of the young K star BD+39 2643, a
member of a 300 Myr moving group. This star hosts a ultra-short period
planet, TOI-1807b, that we characterized by using HARPS-N radial
velocities and TESS photometry.
Objects:
--------------------------------------------------
RA (2000) DE Designation(s)
--------------------------------------------------
13 25 08.00 +38 55 20.9 BD+39 2643 = TOI-1807
--------------------------------------------------
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
tableb1.dat 102 76 Catalog of stars likely members of TOI-1807's
moving group
tablee1.dat 51 71 TOI-1807 (BD+39 2643) HARPS-N spectroscopic
series obtained in the 1st season
tablee2.dat 51 90 TOI-1807 (BD+39 2643) HARPS-N spectroscopic
series obtained in the 2nd season
tablee3.dat 25 22 TOI-1807 (BD+39 2643) iSHELL radial velocity
series
lcs22.dat 88 18774 TESS light curve of TOI-1807 (BD+39 2643)
for Sector 22
lcs23.dat 88 18565 TESS light curve of TOI-1807 (BD+39 2643)
for Sector 23
--------------------------------------------------------------------------------
See also:
I/350 : Gaia EDR3 (Gaia Collaboration, 2020)
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
IV/38 : TESS Input Catalog - v8.0 (TIC-8) (Stassun+, 2019)
Byte-by-byte Description of file: tableb1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 23 A23 --- ID Name of the star
27- 35 I9 --- TIC TIC v8 identification number
37- 46 F10.6 deg RAdeg Right Ascension (J2000.0)
48- 55 F8.4 deg DEdeg Declination (J2000.0)
57- 63 F7.3 mag Gmag ?=-99.99 Gaia G magnitude
65- 71 F7.3 mag (G-K)0 ?=-99.999 (G-K) color corrected for reddening
73- 78 F6.3 d P ?=99.99 Variability period from TESS
light curves
80- 85 F6.3 d e_P ?=99.99 Error on the variability period
87 A1 --- grade Grade of confidence on the correctness of P
89- 93 F5.1 0.1pm EWLi ? Lithium Equivalent Width
95- 99 F5.1 0.1pm e_EWLi ? Error on the Lithium Equivalent Width
101-102 A2 --- Coeval [NY ?] Coeval to TOI-1807's flag
--------------------------------------------------------------------------------
Byte-by-byte Description of file: tablee1.dat tablee2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 13 F13.8 d JD Julian date (JD-2450000)
15- 21 F7.4 km/s RV Radial velocity
23- 28 F6.4 km/s e_RV Error on the radial velocity
30- 36 F7.4 --- logRHK Ca II H&K lines (log(R'HK))
38- 43 F6.4 --- e_logRHK Error on Ca II H&K lines (log(R'HK))
45- 51 F7.4 km/s BIS CCF Bisector
--------------------------------------------------------------------------------
Byte-by-byte Description of file: tablee3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 14 F14.9 d JD Julian date (JD-2450000)
16- 20 F5.1 m/s RV Radial velocity
22- 25 F4.1 m/s e_RV Error on the radial velocity
--------------------------------------------------------------------------------
Byte-by-byte Description of file: lcs22.dat lcs23.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 14 F14.9 d Time Barycentric TESS Julian Date (BJD-2450000)
16- 30 F15.9 e-/s FluxSAP Uncorrected Simple Aperture Photometry flux
32- 46 F15.9 e-/s FluxSAPc Corrected Simple Aperture Photometry flux
48- 62 F15.9 e-/s SkyLocal Local background
64- 72 F9.4 pix Xpos X-position on the CCD
74- 82 F9.4 pix YPos Y-position on the CCD
84- 88 I5 --- Qual Quality flag (1)
--------------------------------------------------------------------------------
Note (1): Qual>0 are the points we recommend to discard.
--------------------------------------------------------------------------------
Acknowledgements:
Domenico Nardiello, domenico.nardiello(at)inaf.it
References:
Covino et al., Paper I 2013A&A...554A..28C 2013A&A...554A..28C, Cat. J/A+A/554/A28
Desidera et al., Paper II 2013A&A...554A..29D 2013A&A...554A..29D
Esposito et al., Paper III 2014A&A...564L..13E 2014A&A...564L..13E
Desidera et al., Paper IV 2014A&A...567L...6D 2014A&A...567L...6D
Damasso et al., Paper V 2015A&A...575A.111D 2015A&A...575A.111D, Cat. J/A+A/575/A111
Sozzetti et al., Paper VI 2015A&A...575L..15S 2015A&A...575L..15S, Cat. J/A+A/575/L15
Borsa et al., Paper VII 2015A&A...578A..64B 2015A&A...578A..64B, Cat. J/A+A/578/A64
Mancini et al., Paper VIII 2015A&A...579A.136M 2015A&A...579A.136M, Cat. J/A+A/579/A136
Damasso et al., Paper IX 2015A&A...581L...6D 2015A&A...581L...6D
Biazzo et al., Paper X 2015A&A...583A.135B 2015A&A...583A.135B, Cat. J/A+A/583/A135
Malavolta et al., Paper XI 2016A&A...588A.118M 2016A&A...588A.118M, Cat. J/A+A/588/A118
Benatti et al., Paper XII 2017A&A...599A..90B 2017A&A...599A..90B, Cat. J/A+A/599/A90
Esposito et al., Paper XIII 2017A&A...601A..53E 2017A&A...601A..53E
Bonomo et al., Paper XIV 2017A&A...602A.107B 2017A&A...602A.107B, Cat. J/A+A/602/A107
Gonzalez-Alvarez et al., Paper XV 2017A&A...606A..51G 2017A&A...606A..51G
Mancini et al., Paper XVI 2018A&A...613A..41M 2018A&A...613A..41M, Cat. J/A+A/613/A41
Lanza et al., Paper XVII 2018A&A...616A.155L 2018A&A...616A.155L, Cat. J/A+A/616/A155
Barbato et al., Paper XVIII 2019A&A...621A.110B 2019A&A...621A.110B, Cat. J/A+A/621/A110
Borsa et al., Paper XIX 2019A&A...631A..34B 2019A&A...631A..34B, Cat. J/A+A/631/A34
Pino et al., Paper XX 2020ApJ...894L..27P 2020ApJ...894L..27P
Carleo et al., Paper XXI 2020A&A...638A...5C 2020A&A...638A...5C, Cat. J/A+A/638/A5
Guilluy et al., Paper XXII 2020A&A...639A..49G 2020A&A...639A..49G
Benatti et al., Paper XXIII 2020A&A...639A..50B 2020A&A...639A..50B, Cat. J/A+A/639/A50
Barbato et al., Paper XXIV 2020A&A...641A..68B 2020A&A...641A..68B
BARATELLA et al., Paper XXV 2020A&A...640A.123B 2020A&A...640A.123B
Di Maio et al., Paper XXVI 2020A&A...641A..68B 2020A&A...641A..68B
Damasso et al., Paper XXVII 2020A&A...642A.133D 2020A&A...642A.133D, Cat. J/A+A/642/A133
Carleo et al., Paper XXVIII 2021A&A...645A..71C 2021A&A...645A..71C
Scandariato et al., Paper XXIX 2021A&A...646A.159S 2021A&A...646A.159S
Rainer et al., Paper XXX 2021A&A...649A..29R 2021A&A...649A..29R
Borsa et al., Paper XXXI 2021A&A...653A.104B 2021A&A...653A.104B
Fossati et al., Paper XXXII 2022A&A...658A.136F 2022A&A...658A.136F
Borsa et al., Paper XXXIII 2022A&A...663A.141B 2022A&A...663A.141B
Maldonado et al., Paper XXXIV 2022A&A...663A.142M 2022A&A...663A.142M
Mancini et al., Paper XXXVI 2022A&A...664A.162M 2022A&A...664A.162M, Cat. J/A+A/664/A162
(End) Patricia Vannier [CDS] 03-Jun-2022