J/AcA/73/127 OGLE-IV Galactic bulge fields transiting planets (Mroz+, 2023)
Candidates for Transiting Planets in OGLE-IV Galactic Bulge Fields.
Mroz M., Pietrukowicz P., Poleski R., Udalski A., Szymanski M.K.,
Gromadzki M., Ulaczyk K., Kozlowski S., Skowron J., Skowron D.M.,
Soszynski I., Mroz P., Ratajczak M., Rybicki K.A., Iwanek P., Wrona M.
<Acta Astron. 73, 127 (2023)>
=2023AcA....73..127M 2023AcA....73..127M (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Exoplanets ; Stars, masses ;
Stars, diameters ; Effective temperatures ; Optical
Keywords: planetary systems - planets and satellites: detection -
planets and satellites: fundamental parameters -
techniques: photometric
Abstract:
We present results of a search for transiting exoplanets in 10-yr long
photometry with thousands of epochs taken in the direction of the
Galactic bulge. This photometry was collected in the fourth phase of
the Optical Gravitational Lensing Experiment (OGLE-IV). Our search
covered ∼222000 stars brighter than I=15.5mag. Selected transits
were verified using a probabilistic method. The search resulted in 99
high-probability candidates for transiting exoplanets. The estimated
distances to these targets are between 0.4kpc and 5.5kpc, which is a
significantly wider range than for previous transit searches. The
planets found are Jupiter-size, with the exception of one (named
OGLE-TR1003b) located in the hot Neptune desert. If the candidate is
confirmed, it can be important for studies of highly irradiated
intermediate-size planets. The existing long-term, high-cadence
photometry of our candidates increases the chances of detecting
transit timing variations at long timescales. Selected candidates will
be observed by the future NASA flagship mission, the Nancy Grace Roman
Space Telescope, in its search for Galactic bulge microlensing events,
which will further enhance the photometric coverage of these stars.
Description:
We conducted a planetary transit search using photometric observations
collected during the fourth phase of the OGLE project. We used
observations of main sequence stars within four fields covering a
total area of 5.6deg2 in the direction of the Galactic bulge.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 100 99 Observational parameters of systems with
planetary candidates
table4.dat 207 99 Selected physical parameters of systems
with planetary candidates
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 12 A12 --- Name Name (OGLE-TR-NNNN)
14- 15 I2 h RAh Right ascension (J2000)
17- 18 I2 min RAm Right ascension (J2000)
20- 24 F5.2 s RAs Right ascension (J2000)
26 A1 --- DE- Declination sign (J2000)
27- 28 I2 deg DEd Declination (J2000)
30- 31 I2 arcmin DEm Declination (J2000)
33- 36 F4.1 arcsec DEs Declination (J2000)
38- 48 F11.8 d Porb Orbital period of the companion
50- 59 F10.5 d Tc Time of conjunction (BJD-2450000, TDB)
61- 66 F6.4 d T14 Total transit duration
68- 75 F8.6 --- delta Fractional transit depth
77- 82 F6.3 mag Imag Brightness in I-band
84- 89 F6.3 mag Vmag Brightness in V-band
91- 95 F5.2 --- SNR Signal-to-noise ratio
97-100 F4.2 --- Prob Probability that the transit is of planetary
origin given the signal Pr(planet|signal)
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 12 A12 --- Name Name (OGLE-TR-NNNN)
14- 19 F6.4 Msun M* Stellar mass
20 A1 --- --- [+]
21- 26 F6.4 Msun E_M* Stellar mass error (upper value)
27 A1 --- --- [-]
28- 33 F6.4 Msun e_M* Stellar mass error (lower value)
35- 39 F5.3 Rsun R* stellar radius
40 A1 --- --- [+]
41- 45 F5.3 Rsun E_R* Stellar radius error (upper value)
46 A1 --- --- [-]
47- 51 F5.3 Rsun e_R* Stellar radius error (lower value)
53- 57 F5.3 [cm/s2] logg Surface gravity
58 A1 --- --- [+]
59- 63 F5.3 [cm/s2] E_logg Surface gravity error (upper value)
64 A1 --- --- [-]
65- 69 F5.3 [cm/s2] e_logg Surface gravity error (lower value)
71- 75 I5 K Teff Effective temperature
76 A1 --- --- [+]
77- 81 I5 K E_Teff Effective temperature error (upper value)
82 A1 --- --- [-]
83- 86 I4 K e_Teff Effective temperature error (lower value)
88- 93 F6.3 [-] [Fe/H] Metallicity
94 A1 --- --- [+]
95- 99 F5.3 [-] E_[Fe/H] Metallicity error (upper value)
100 A1 --- --- [-]
101-105 F5.3 [-] e_[Fe/H] Metallicity error (lower value)
107-110 I4 pc d Distance
111 A1 --- --- [+]
112-115 I4 pc E_d Distance error (upper value)
116 A1 --- --- [-]
117-120 I4 pc e_d Distance error (lower value)
122-128 F7.5 au a Orbital radius
129 A1 --- --- [+]
130-136 F7.5 au E_a Orbital radius error (upper value)
137 A1 --- --- [-]
138-144 F7.5 au e_a Orbital radius error (lower value)
146-151 F6.3 deg i Inclination
152 A1 --- --- [+]
153-158 F6.3 deg E_i Inclination error (upper value)
159 A1 --- --- [-]
160-165 F6.3 deg e_i Inclination error (lower value)
167-173 F7.2 K Teq Equilibrium temperature
174 A1 --- --- [+]
175-181 F7.2 K E_Teq Equilibrium temperature error (upper value)
182 A1 --- --- [-]
183-189 F7.2 K e_Teq Equilibrium temperature error (lower value)
191-195 F5.3 Rjup RP Planet radius in Jupiter unit
196 A1 --- --- [+]
197-201 F5.3 Rjup E_RP Planet radius in Jupiter unit error
(upper value)
202 A1 --- --- [-]
203-207 F5.3 Rjup e_RP Planet radius in Jupiter unit error
(lower value)
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 26-Aug-2025