J/A+A/664/A162 LC and RV for HAT-P-15, 17, 21, 26 and 29 (Mancini+, 2022)
The GAPS Programme at TNG: XXXVI.
Measurement of the Rossiter-McLaughlin effect and revising the physical and
orbital parameters of the HAT-P-15, HAT-P-17, HAT-P-21, HAT-P-26, HAT-P-29
eccentric planetary systems.
Mancini L., Esposito M., Covino E., Southworth J., Poretti E., Andreuzzi G.,
Barbato D., Biazzo K., Borsato L., Bruni I., Damasso M., Di Fabrizio L.,
Evans D.F., Granata V., Lanza A.F., Naponiello L., Nascimbeni V.,
Pinamonti M., Sozzetti A., Tregloan-Reed J., Basilicata M., Bignamini A.,
Bonomo A.S., Claudi R., Cosentino R., Desidera S., Fiorenzano A.F.M.,
Giacobbe P., Harutyunyan A., Henning T., Knapic C., Maggio A., Micela G.,
Molinari E., Pagano I., Pedani M., Piotto G.
<Astron. Astrophys. 664, A162 (2022)>
=2022A&A...664A.162M 2022A&A...664A.162M (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Exoplanets ; Radial velocities ;
Photometry ; Optical
Keywords: techniques: radial velocities - techniques: photometric -
planets and satellites: fundamental parameters -
stars: fundamental parameters
Abstract:
The measurement of the spin-orbit alignment of hot Jupiters, with a
range of orbital and physical properties, can provide information
about the evolution of the orbits of this special class of giant
planets.
We aim to refine the orbital and physical parameters and determine the
sky-projected planet orbital obliquity, λ, of five eccentric
(e∼0.1-0.3) transiting planetary systems: HAT-P-15, HAT-P-17,
HAT-P-21, HAT-P-26, and HAT-P-29, whose parent stars have an effective
temperature between 5100K<Teff<6200K. Each of the systems hosts a hot
Jupiter, except for HAT-P-26 that hosts a Neptune-mass planet.
We observed transit events of these planets with the HARPS-N
spectrograph, obtaining high-precision radial velocity measurements
that allow us to measure the Rossiter-McLaughlin effect for each of
the target systems. We used these new HARPS-N spectra and archival
data, including those from Gaia, to better characterise the
stellar atmospheric parameters. The photometric parameters for four of
the hot Jupiters were recalculated using 17 new transit light curves,
obtained with an array of medium-class telescopes, and data from the
TESS space telescope. HATNet time-series photometric data were checked
for the signatures of rotation periods of the target stars and their
spin axis inclination.
From the analysis of the Rossiter-McLaughlin effect we derived a
sky-projected obliquity of λ=13°±6°,
λ=-26.3°±6.7°, {lambda=-0.7°±12.5°,
λ=-26°±16°, for HAT-P-15 b, HAT-P-17 b, HAT-P-21 b
and HAT-P-29 b, respectively. Based on theoretical considerations,
these small values of λ should be of primordial origin, with
the possible exception of HAT-P-21. Due to the quality of the data, we
were not able to well constrain λ for HAT-P-26 b, although a
prograde orbit is favoured (λ=18°±49°). The stellar
activity of HAT-P-21 indicates a rotation period of 15.88±0.02 days,
which allowed us to determine its true misalignment angle
ψ=25°±16°. Our new analysis of the physical parameters
of the five exoplanetary systems returned values compatible with those
existing in the literature. Using TESS and the available transit
lightcurves, we reviewed the orbital ephemeris for the five systems
and confirmed that the HAT-P-26 system shows transit timing
variations, which may tentatively be attributed to the presence of a
third body.
Description:
Radial velocity measurements of HAT-P-15, HAT-P-17, HAT-P-21,
HAT-P-26, and HAT-P-29 obtained with HARPS-N at the 3.5m TNG telescope
in La Palma (Spain).
Light curves of transit events of the extrasolar planet HAT-P-17b,
HAT-P-21b, HAT-P-26b, and HAT-P-29b.
Two of the datasets were obtained using the Cassini 1.52m Telescope
(Gunn r and Gunn i) Astrophysics and Space Science Observatory of
Bologna in Loiano (Italy). Eleven of the datasets were obtained using
the Zeiss 1.23m telescope (Cousins R and Cousins I) at the
German-Spanish Astronomical Centre at Calar Alto (Spain).
Two of the datasets were obtained using the Copernico 1.80m telescope
(Sloan r) at Cima Ekar-Asiago (Italy). One of the datasets was
obtained using the 3.5m TNG telescope (Johnson R) in La Palma (Spain).
One of the datasets was obtained using the IAC-80cm TNG telescope
(Cousins R) at the Spanish Observatorio del Teide (Spain).
Objects:
------------------------------------------------------
RA (2000) DE Designation(s)
------------------------------------------------------
04 24 59.52 +39 27 38.2 HAT-P-15 = TYC 2883-1687-1
21 38 08.88 +30 29 19.4 HAT-P-17 = TYC 2717-417-1
11 25 05.88 +41 01 40.6 HAT-P-21 = TYC 3013-1229-1
14 12 37.54 +04 03 36.1 HAT-P-26 = TYC 320-1027-1
02 12 31.46 +51 46 43.5 HAT-P-29 = TYC 3293-1539-1
------------------------------------------------------
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
stars.dat 40 5 List of studied stars
phot.dat 97 3373 Photomoetry of HAT-P-17, HAT-P-21, HAT-P-26
and HAT-P-29
rv.dat 37 142 RV measurements of HAT-P-15, HAT-P-17, HAT-P-21,
HAT-P-26 and HAT-P-29 (HARPS-N 3.5m TNG)
--------------------------------------------------------------------------------
See also:
J/ApJ/772/80 : Radial velocities of HAT-P-17 (Fulton+, 2013)
J/ApJ/724/866 : Follow-up observations of HAT-P-15 (Kovacs+, 2010)
J/ApJ/728/138 : Follow-up photometry of HAT-P-26 (Hartman+, 2011)
J/ApJ/733/116 : HAT-P-28 and HAT-P-29 photometry (Buchhave+, 2011)
Byte-by-byte Description of file: stars.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 A8 --- Name Star name (HAT-P-NN)
10- 11 I2 h RAh Right ascension (J2000)
13- 14 I2 min RAm Right ascension (J2000)
16- 20 F5.2 s RAs Right ascension (J2000)
22 A1 --- DE- Declination sign (J2000)
23- 24 I2 deg DEd Declination (J2000)
26- 27 I2 arcmin DEm Declination (J2000)
29- 32 F4.1 arcsec DEs Declination (J2000)
34- 35 A2 --- rv [rv] Indicates RV data in rv.dat file
37- 40 A4 --- phot [phot ] Indicates photometric data in phot.dat file
--------------------------------------------------------------------------------
Byte-by-byte Description of file: phot.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 A8 --- Name Star name (HAT-P-NN) (1)
10- 19 A10 "date" Obs.dat Observation date
21- 29 A9 --- Inst Instrument
31 A1 --- Band [RI] Observed band
33- 50 F18.12 d BJD Barycentric JD for the midpoint
of observation (TDB) (BJD-2400000)
52- 73 F22.19 mag mag Differential magnitude of the target
76- 97 F22.20 mag e_mag Measurement error of the magnitude
--------------------------------------------------------------------------------
Note (1): Date, instrument and number of observations for each star:
-----------------------------------------------------------------------
HAT-P-17 Nobs HAT-P-21 Nobs
-----------------------------------------------------------------------
2012/07/15 CA 1.23m I 117 2012/03/03 Cassini R 211
2014/07/20 Cassini I 146 2012/03/07 CA 1.23m R 145
-----------------------------------------------------------------------
HAT-P-26 Nobs HAT-P-29 Nobs
-----------------------------------------------------------------------
2012/03/04 CA 1.23m I 67 2011/10/03 CA 1.23m R 121
2014/04/17 CA 1.23m I 209 2012/10/10 TNG 3.5m R 113
2016/03/14 CA 1.23m I 190 2012/11/01 CA 1.23m R 180
2017/04/22 CA 1.23m I 171 2013/10/16 IAC 80cm R 234
2018/02/26 CA 1.23m I 282 2014/10/23 CA 1.23m I 254
2014/10/29 Copernico R 138
2016/01/07 Copernico R 231
2020/10/23 CA 1.23m I 564
-----------------------------------------------------------------------
--------------------------------------------------------------------------------
Byte-by-byte Description of file: rv.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 A8 --- Name Star name (HAT-P-NN)
10- 21 F12.6 d BJD Barycentric JD for the midpoint of
observation (TDB) (BJD-2400000)
23- 30 F8.4 km/s RV Radial Velocity (RV) of the target
32- 37 F6.4 km/s e_RV Measurement error of RV
--------------------------------------------------------------------------------
Acknowledgements:
Luigi Mancini, lmancini(at)roma2.infn.it,
University of Rome Tor Vergata, Italy
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(End) L. Mancini [Univ. Rome Tor Vergata, Italy], P. Vannier [CDS] 27-May-2022