J/AJ/150/168 Spectroscopy and photometry for HAT-P-50--HAT-P-53 (Hartman+, 2015)
HAT-P-50b, HAT-P-51b, HAT-P-52b, and HAT-P-53b: three transiting hot Jupiters
and a transiting hot Saturn from the HATNet survey.
Hartman J.D., Bhatti W., Bakos G.A., Bieryla A., Kovacs G., Latham D.W.,
Csubry Z., de Val-Borro M., Penev K., Buchhave L.A., Torres G.,
Howard A.W., Marcy G.W., Johnson J.A., Isaacson H., Sato B., Boisse I.,
Falco E., Everett M.E., Szklenar T., Fulton B.J., Shporer A., Kovacs T.,
Hansen T., Beky B., Noyes R.W., Lazar J., Papp I., Sari P.
<Astron. J., 150, 168 (2015)>
=2015AJ....150..168H 2015AJ....150..168H (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Planets ; Radial velocities ;
Photometry
Keywords: planetary systems - techniques: photometric -
stars: individual: (HAT-P-50,HAT-P-51,HAT-P-52,HAT-P-53) -
techniques: spectroscopic
Abstract:
We report the discovery and characterization of four transiting
exoplanets by the HATNet survey. The planet HAT-P-50b has a mass of
1.35MJ and radius of 1.29RJ, and orbits a bright (V=11.8mag)
M=1.27M☉, R=1.70R☉ star every P=3.1220days. The planet
HAT-P-51b has a mass of 0.31MJ and radius of 1.29RJ, and orbits a
V=13.4mag, M=0.98M☉, R=1.04R☉ star with a period of
P=4.2180days. The planet HAT-P-52b has a mass of 0.82MJ and radius
of 1.01RJ, and orbits a V=14.1mag, M=0.89M☉, R=0.89R☉
star with a period of P=2.7536days. The planet HAT-P-53b has a mass of
1.48MJ and radius of 1.32RJ, and orbits a V=13.7mag,
M=1.09M☉, R=1.21R☉ star with a period of P=1.9616days. All
four planets are consistent with having circular orbits and have
masses and radii measured to better than 10% precision. The low
stellar jitter and favorable Rp/R* ratio for HAT-P-51 make it
a promising target for measuring the Rossiter-McLaughlin effect for a
Saturn-mass planet.
Description:
The HATNet network consists of six identical fully automated
instruments, with four at Fred Lawrence Whipple Observatory (FLWO) in
AZ, and two on the roof of the Submillimeter Array Hangar Building at
Mauna Kea Observatory (MKO) in HI. The light-gathering elements of
each instrument include an 11cm diameter telephoto lens, a Sloan r
filter, and a 4K*4K front-side-illuminated CCD camera. Observations
made in 2007 and early 2008 were carried out using a Cousins R filter.
The instruments have a field of view of 10.6°*10.6° and a
pixel scale of 9"/pixel at the center of an image.
Additional time-series photometric measurements were obtained for all
four of the systems using Keplercam on the FLWO 1.2m telescope. For
HAT-P-50 we also obtained follow-up photometry with the CCD imager on
the Byrne Observatory at Sedgwick (BOS) 0.8m telescope, located at
Sedgwick Reserve in Santa Ynez Valley, CA, and operated by the Las
Cumbres Observatory Global Telescope institute (LCOGT).
HAT-P-50 was observed with HAT-10/G316 on 2008 Nov-2009 May, with
HAT-5/G364 on 2009 May, with HAT-9/G364 on 2008 Dec-2009 May, with BOS
on 2012 Feb 15, on 2012 Feb 21 and on 2012 Apr 08, and with Keplercam
on 2012 Feb 18, on 2012 Nov 28, on 2012 Dec 23, on 2013 Jan 14, and on
2013 Jan 17. HAT-P-51 was observed with HAT-6/G164 on 2007 Sep-2008
Feb, with HAT-9/G164 on 2007 Sep-2008 Feb, with HAT-10/G165 on 2010
Sep-2011 Jan, with HAT-5/G165 on 2010 Nov-2011 Feb, with HAT-8/G165 on
2010 Nov-2011 Feb, with HAT-6/G209 on 2010 Nov-2011 Feb, with
HAT-9/G209 on 2010 Nov-2011 Feb, with HAT-7/G210 on 2010 Nov-2011 Jan,
and with Keplercam on 2011 Oct 21, on 2012 Jan 05, on 2012 Oct 05, on
2012 Oct 26, and on 2012 Nov 12. HAT-P-52 was observed with HAT-5/G212
on 2010 Sep-Nov, with HAT-8/G212 on 2010 Aug-Nov, and with Keplercam
on 2010 Dec 23, on 2011 Sep 05, on 2011 Sep 27, on 2011 Nov 21, and on
2012 Jan 07. HAT-P-53 was observed with HAT-6/G164 on 2007 Sep-2008
Feb, with HAT-9/G164 on 2007 Sep-2008 Feb, with HAT-10/G165 on 2010
Sep-2011 Jan, with HAT-5/G165 on 2010 Nov-2011 Feb, with HAT-8/G165 on
2010 Nov-2011 Feb, and with Keplercam on 2011 Oct 19 and on 2011 Oct
27.
The facilities used for each system include the Tillinghast Reflector
Echelle Spectrograph (TRES; Resolution
Δλ/λ/1000=44) on the 1.5m Tillinghast Reflector at
FLWO (used on 2010 Dec-2012 Feb for HAT-P-50, on 2011 Sep 21 for
HAT-P-51, on 2010 Dec-2011 Jan for HAT-P-52, and on 2011 Sep 18-19 for
HAT-P-53); the Astrophysical Research Consortium Echelle Spectrometer
(ARCES; Resolution Δλ/λ/1000=31.5) on the ARC 3.5m
telescope at Apache Point Observatory (APO) in New Mexico (used on
2011 Sep 19 for HAT-P-51, and on 2011 Sep 19-20 for HAT-P-53); the
FIbre-fed Echelle Spectrograph (FIES) at the 2.5m Nordic Optical
Telescope (NOT) at La Palma, Spain (used on 2012 Mar 13-17 with
Δλ/λ/1000=67 for HAT-P-50, and on 2011 Aug 4 with
Δλ/λ/1000=46 for HAT-P-51); the SOPHIE
Spectrograph (Resolution Δλ/λ/1000=39) on the
1.93m telescope at OHP in France (used for HAT-P-51 on 2011 Dec 4-12;
the HIgh Resolution Echelle Spectrometer (HIRES; Resolution
Δλ/λ/1000=55) on the Keck-I telescope in Hawaii
together with the I2 absorption cell (used on 2011 Oct-2012 Feb for
HAT-P-51, on 2011 Oct 19 and 2011 Feb-2012 Jul for HAT-P-52, and on
2011 Nov 14 and 2011 Nov-2012 Feb for HAT-P-53); and the
High-Dispersion Spectrograph (HDS; Resolution
Δλ/λ/1000=60) with the I2 absorption cell on the
Subaru telescope in Hawaii (used on 2012 Feb 7 and 2012 Feb-Sep for
HAT-P-50, and on 2012 Feb 9 and 2012 Feb 7-10 for HAT-P-51).
The high-precision radial velocity measurements for all objects are
seen to vary in phase with the transit ephemerides. The data are
listed in Table4. All photometric measurements made for the four
objects are available in Table5.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
stars.dat 80 4 Coordinates and period for HAT-P-50--HAT-P-53
table4.dat 66 81 Relative radial velocities, bisector spans, and
activity index measurements for HAT-P-50--HAT-P-53
table5.dat 60 62534 Light curve data for HAT-P-50--HAT-P-53
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See also:
I/322 : UCAC4 Catalogue (Zacharias+, 2012)
J/AJ/150/197 : Photometry and spectroscopy of HAT-P-57 (Hartman+, 2015)
J/AJ/147/128 : HAT-P-44, HAT-P-45, and HAT-P-46 follow-up (Hartman+, 2014)
J/AJ/147/84 : Photometry and spectroscopy of HAT-P-49 (Bieryla+, 2014)
J/A+A/558/A86 : HAT-P-42b and HAT-P-43b ri light curves (Boisse+, 2013)
J/AJ/144/139 : HAT-P-39, HAT-P-40, and HAT-P-41 follow-up (Hartman+, 2012)
J/ApJ/734/109 : Follow-up photometry of HAT-P-27 (Beky+, 2011)
J/ApJ/723/L223 : Radial velocities of HAT-P-11 (Winn+, 2010)
J/ApJ/720/1118 : i-band photometry of HAT-P-16 (Buchhave+, 2010)
J/ApJ/710/1724 : Follow-up photometry for HAT-P-11 (Bakos+, 2010)
J/ApJ/704/1107 : Transiting planet candidates in HATNet field 205
(Latham+, 2009)
Byte-by-byte Description of file: stars.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Name Source identifier
10- 25 A16 --- 2MASS The 2MASS identifier
27- 36 A10 --- GSC The GSC identifier
38- 39 I2 h RAh Hour of Right Ascension (J2000) (1)
41- 42 I2 min RAm Minute of Right Ascension (J2000) (1)
44- 48 F5.2 s RAs Second of Right Ascension (J2000) (1)
50 A1 --- DE- Sign of the Declination (J2000) (1)
51- 52 I2 deg DEd Degree of Declination (J2000) (1)
54- 55 I2 arcmin DEm Arcminute of Declination (J2000) (1)
57- 60 F4.1 arcsec DEs Arcsecond of Declination (J2000) (1)
62- 70 F9.7 d Per [1.9/4.3] Period (2)
72- 80 F9.7 d e_Per Error in Period (2)
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Note (1): From 2MASS (cat. II/246).
Note (2): From Table6 in the paper.
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Byte-by-byte Description of file: table4.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 A8 --- Name Source identifier
10- 19 F10.5 d BJD Barycentric Julian Date (BJD-2454000)
21- 27 F7.2 m/s RV [-229/221]? Radial velocity
29- 33 F5.2 m/s e_RV [2/74]? 1σ uncertainty in RV
35- 41 F7.2 m/s BS [-154/497]? Bisector span
43- 47 F5.2 m/s e_BS [4/82]? 1σ uncertainty in BS
49- 54 F6.4 --- S [0.075/0.445]? Activity index
56- 60 F5.3 --- Phase [0/1] Phase
62- 66 A5 --- Inst Instrument (FIES, HDS, HIRES, or TRES) (1)
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Note (1): The facilities used are defined as:
FIES = FIbre-fed Echelle Spectrograph (at the 2.5m Nordic Optical Telescope
(NOT) at La Palma, Spain);
HDS = High-Dispersion Spectrograph (with the I2 absorption cell) on the
Subaru telescope in Hawaii;
HIRES = HIgh Resolution Echelle Spectrometer (on the Keck-I telescope in
Hawaii together with the I2 absorption cell);
TRES = Tillinghast Reflector Echelle Spectrograph (on the 1.5m Tillinghast
Reflector at FLWO).
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 A8 --- Name Source identifier
10- 22 F13.5 d BJD UTC Barycentric Julian date (1)
24- 31 F8.5 mag Dmag [-0.1/0.1] Observed differential magnitude in
Flt (2)
33- 39 F7.5 mag e_Dmag [0.00099/0.14] Uncertainty in mag
41- 48 F8.5 mag omag [10.3/13.1]? Raw, observed magnitude (3)
50 A1 --- Flt Filter used in the observation (Cousins R, i,
or Sloan r)
52- 60 A9 --- Inst Instrument used in the observation (4)
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Note (1): Barycentric Julian Date calculated directly from UTC without
correction for leap seconds.
Note (2): The out-of-transit level has been subtracted. These magnitudes have
been subjected to the External Parameter Decorrelation (EPD) and Trend
Filtering Algorithm (TFA) procedures, carried out simultaneously with
the transit fit.
Note (3): Raw magnitude values without application of the EPD and TFA procedure.
These are provided only for the follow-up observations. For HATNet,
the transits are only detectable after applying the noise filtering
methods.
Note (4): The instruments used are defined as:
HATNet = The HATNet wide-field photometric instruments;
BOS = The Byrne Observatory at Sedgwick (BOS) 0.8m telescope, located
at Sedgwick Reserve in Santa Ynez Valley, CA, and operated by the
Las Cumbres Observatory Global Telescope institute (LCOGT);
Keplercam = Keplercam on the Fred Lawrence Whipple Observatory (FLWO) 1.2m
telescope.
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History:
From electronic version of the journal
(End) Prepared by [AAS]; Sylvain Guehenneux [CDS] 19-Apr-2016