J/A+A/557/A30 Transits of HAT-P-16 and WASP-21 (Ciceri+, 2013)
Simultaneous follow-up of planetary transits: revised physical properties for
the planetary systems HAT-P-16 and WASP-21.
Ciceri S., Mancini L., Southworth J., Nikolov N., Bozza V., Bruni I.,
Calchi Novati S., D'Ago G., Henning T.
<Astron. Astrophys. 557, A30 (2013)>
=2013A&A...557A..30C 2013A&A...557A..30C
ADC_Keywords: Stars, double and multiple ; Planets ; Photometry, RI
Keywords: planetary systems - stars: fundamental parameters -
techniques: photometric - stars: individual: HAT-P-16 -
stars: individual: WASP-21
Abstract:
We present the first photometric follow-up of the transiting planet
HAT-P-16 b, and new photometric observations of WASP-21 b, obtained
simultaneously with two medium-class telescopes located in different
countries, using the telescope defocussing technique. We modeled these
and other published data in order to estimate the physical parameters
of the two planetary systems.
Description:
For both planetary systems, we observed one transit event
simultaneously with two telescopes (Figs. 1 and 2). These observations
were carried out between September and October 2012 with the 1.52m
Cassini telescope from the Loiano observatory and with the 1.23m
Calar Alto telescope. An additional transit of HAT-P-16 was observed
on October 29th 2010 from Loiano during the PLAN microlensing campaign
towards M31 (Calchi Novati et al. 2009ApJ...695..442N 2009ApJ...695..442N,
2010ApJ...717..987C 2010ApJ...717..987C). Another transit of HAT-P-16 was observed in
Calar Alto on August 22th 2011. In total we present six new light
curves, five of them being from defocussed 1.2-1.5m telescopes (see
table 1).
File contain the data used to plot the lightcurves in Fig. 3 and 4 in
the paper.
Objects:
----------------------------------------------------------
RA (2000) DE Designation(s)
----------------------------------------------------------
00 38 17.56 +42 27 47.2 HAT-P-16 = TYC 2792-1700-1
23 09 58.25 +18 23 45.9 WASP-21 = GSC 01715-00679
----------------------------------------------------------
File Summary:
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FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 107 6 Observing log for the two transiting extrasolar
planet systems
hp16_c-1.dat 30 535 HAT-P-16 Calar Alto #1 light curve in Rc
hp16_c-2.dat 30 216 HAT-P-16 Calar Alto #2 light curve in Ic
hp16_l-1.dat 30 261 HAT-P-16 Loiano #1 light curve in Johnson I
hp16_l-2.dat 30 197 HAT-P-16 Loiano #2 light curve in Johnson I
w21_caha.dat 30 218 WASP-21 Calar Alto light curve in Ic
w21_loia.dat 30 171 WASP-21 Loiano light curve in Gunn i
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See also:
J/ApJ/720/1118 : HAT-P-16 i-band photometry (Buchhave+, 2010)
J/A+A/519/A98 : WASP-21b transit (Bouchy+, 2010)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 A8 --- Name Star name
10- 16 A7 --- Tel Telescope identification:
"CA1.23m" (Calar Alto) or "Cassini"
18- 27 A10 "Y/M/D" Date Date of the observation (YYYY/MM/DD)
29- 33 A5 "h:m:s" STime UT start time
35- 39 A5 "h:m:s" ETime UT end time
41- 43 I3 --- Nobs [177/537] Number of observations
45- 51 A7 s Texp Exposure time(s)
53- 55 I3 s Tobs Observational cadence
57- 63 A7 --- Syst Filter system (Johnson/Cousins or Gunn)
65 A1 --- Filt [RIi] Filter
67- 70 F4.2 --- AirM1 [1.0/2.2] Airmass (beginning)
71 A1 --- --- [-]
72- 75 F4.2 --- AirM2 [1.0/2.2] Airmass (end)
77- 78 I2 % Moon [18/86] Fractional illumination of the Moon
at the midpoint of the transit
80- 89 A10 pix Ap Aperture radii (3 radii)
91- 94 F4.2 mmag Sc Scatter
96-107 A12 --- FileName Name of the file with photometry
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Byte-by-byte Description of file: h*.dat w*.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 11 F11.8 --- Phase [-0.05/0.06] Phase
13- 21 F9.6 mag mag Magnitude
23- 30 F8.6 mag e_mag rms uncertainty on mag
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Acknowledgements:
Simona Ciceri, ciceri( at )mpia.de
(End) Emmanuelle Perret [CDS] 24-Jul-2013