J/AJ/165/83 KMTNet light curve for 4 microlensing planets (Ryu+, 2023)
Mass Production of 2021 KMTNet Microlensing Planets II.
Ryu Y.-H., Shin I.-G., Yang H., Gould A., Albrow M.D., Chung S.-J., Han C.,
Hwang K.-H., Jung Y.K., Shvartzvald Y., Yee J.C., Zang W., Cha S.-M.,
Kim D.-J., Kim S.-L., Lee C.-U., Lee D.-J., Lee Y., Park B.-G., Pogge R.W.
<Astron. J., 165, 83 (2023)>
=2023AJ....165...83R 2023AJ....165...83R (SIMBAD/NED BibCode)
ADC_Keywords: Exoplanets; Gravitational lensing; Photometry, VRI
Keywords: Gravitational microlensing
Abstract:
We continue our program of publishing all planets (and possible
planets) found by eye in 2021 Korea Microlensing Telescope Network
(KMTNet) online data. We present four planets (KMT-2021-BLG-0712Lb,
KMT-2021-BLG-0909Lb, KMT-2021-BLG-2478Lb, and KMT-2021-BLG-1105Lb),
with planet-to-host mass ratios in the range -3.3≲logq≲-2.2. This
brings the total of secure, by-eye, 2021 KMTNet planets to 16,
including 8 in this series. The by-eye sample is an important check of
the completeness of semiautomated detections, which are the basis for
statistical analyses. One of the planets, KMT-2021-BLG-1105Lb, is
blended with a relatively bright (I,V)~(18.9, 21.6) star that may be
the host. This could be verified immediately by high-resolution
imaging. If so, the host is an early G-dwarf, and the planet could be
characterized by radial velocity observations on 30m class telescopes.
Description:
All of the planets in this paper were identified in by-eye searches of
Korea Microlensing Telescope (KMT) events that were announced by the
KMT AlertFinder as the 2021 season progressed. As described in Paper
I, KMTNet observes from three 1.6m telescopes that are equipped with
(2x2deg) cameras at Cerro Tololo Inter-American Observatory (CTIO) in
Chile (KMTC), South African Astronomical Observatory (SAAO) in South
Africa (KMTS), and Siding Spring Observatory (SSO) in Australia
(KMTA), mainly in the I-band, with 60s exposures, but with 9% of the
observations in the V-band.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 71 4 *Event names, cadences, alerts, and locations
fig1.dat 41 4279 Light-curve data for KMT-2021-BLG-0712
fig3.dat 41 1650 Light-curve data for KMT-2021-BLG-0909
fig4.dat 41 11287 Light-curve data for KMT-2021-BLG-2478
fig6.dat 41 1798 Light-curve data for KMT-2021-BLG-1105
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Note on table1.dat: The coordinates given here are for the nearest
catalog stars (i.e., baseline objects). In Section 4 we discuss the
offsets from these locations of the actual events.
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See also:
II/323 : OGLE-III Bulge Photometric Catalog (Szymanski+ 2011)
J/A+A/549/A147 : Abundances microlensed bulge dwarf stars. V. (Bensby+, 2013)
J/AJ/152/141 : Solar neighborhood. XXXVII. RVs for M dwarfs (Benedict+, 2016)
J/AJ/159/256 : Light curve of OGLE-2018-BLG-0677 (Herrera-Martin+, 2020)
J/AJ/161/293 : LCs of OGLE-2018-BLG-0567 and OGLE-2018-BLG-0962 (Jung+, 2021)
J/AJ/162/163 : Systematic KMTNet Planetary Anomaly Search. I. (Zang+, 2021)
J/AJ/163/43 : Systematic KMTNet Planetary Anomaly Search. II. (Hwang+, 2022)
J/AJ/164/180 : Mass Prod. 2021 KMTNet Microlensing Planets. I. (Ryu+, 2022)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 17 A17 --- Name Event identifier
19- 21 F3.1 /h Cad. [1/4] Observational cadence (Γ)
23- 26 I4 yr Obs.Y [2021] Alert date, year
28- 30 A3 "month" Obs.M Alert date, month
32- 33 I2 d Obs.D Alert date, day
35- 36 I2 h RAh [17] Hour of right ascension (J2000)
38- 39 I2 min RAm [42/57] Minute of right ascension (J2000)
41- 45 F5.2 s RAs Second of right ascension (J2000)
47 A1 --- DE- [-] Sign of declination (J2000)
49- 50 I2 deg DEd [25/31] Degree of declination (J2000)
52- 53 I2 arcmin DEm Arcminute of declination (J2000)
55- 59 F5.2 arcsec DEs Arcsecond of declination (J2000)
61- 65 F5.2 deg GLON [-0.66/2.61] Galactic longitude
67- 71 F5.2 deg GLAT [-3.29/2.3] Galactic latitude
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Byte-by-byte Description of file: fig[1346].dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- ID KMT observatory code (1)
10- 10 A1 --- Filt Filter; I
12- 22 F11.6 d HJD Heliocentric Julian Date; HJD-2450000
24- 32 F9.6 mag omag Apparent magnitude in Filter
34- 41 F8.6 mag e_omag Uncertainty in omag
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Note (1): Observatories as follows:
KMTC(01) = 1.6m CTIO (Chile) telescope, dataset 1
KMTC(02) = 1.6m CTIO (Chile) telescope, dataset 2
KMTC(41) = 1.6m CTIO (Chile) telescope, dataset 41
KMTC(43) = 1.6m CTIO (Chile) telescope, dataset 43
KMTC = 1.6m CTIO (Chile) telescope;
KMTS(01) = 1.6m SAAO (South Africa) telescope, dataset 1
KMTS(02) = 1.6m SAAO (South Africa) telescope, dataset 2
KMTS(41) = 1.6m SAAO (South Africa) telescope, dataset 41
KMTS(43) = 1.6m SAAO (South Africa) telescope, dataset 43
KMTS = 1.6m SAAO (South Africa) telescope;
KMTA(02) = 1.6m SSO (Australia) telescope, dataset 2
KMTA(43) = 1.6m SSO (Australia) telescope, dataset 43
KMTA = 1.6m SSO (Australia) telescope.
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History:
From electronic version of the journal
References:
Ryu et al. Paper I : 2022AJ....164..180R 2022AJ....164..180R Cat. J/AJ/164/180
Shin et al. Paper III: 2023AJ....165....8S 2023AJ....165....8S Cat. J/AJ/165/8
(End) Prepared by [AAS], Coralie Fix [CDS], 02-Jun-2023