J/AJ/165/8 Mass Production 2021 KMTNet Microlensing Planets. III (Shin+, 2023)
Mass Production of 2021 KMTNet Microlensing Planets.
III. Analysis of Three Giant Planets.
Shin I.-G., Yee J.C., Gould A., Hwang K.-H., Yang H., Bond I.A.,
(the Leading Authors), Albrow M.D., Chung S.-J., Han C., Jung Y.K.,
Ryu Y.-H., Shvartzvald Y., 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.,
(the Kmtnet Collaboration), Abe F., Barry R., Bennett D.P.,
Bhattacharya A., Fujii H., Fukui A., Hirao Y., Silva S.I., Itow Y.,
Kirikawa R., Kondo I., Koshimoto N., Matsubara Y., Matsumoto S.,
Miyazaki S., Muraki Y., Okamura A., Olmschenk G., Ranc C., Rattenbury N.J.,
Satoh Y., Sumi T., Suzuki D., Toda T., Tristram P.J., Vandorou A., Yama H.,
(the Moa Collaboration)
<Astron. J., 165, 8 (2023)>
=2023AJ....165....8S 2023AJ....165....8S (SIMBAD/NED BibCode)
ADC_Keywords: Exoplanets; Stars, dwarfs; Photometry, RI
Abstract:
We present the analysis of three more planets from the KMTNet 2021
microlensing season. KMT-2021-BLG-0119Lb is a ∼6MJup planet
orbiting an early M-dwarf or a K-dwarf, KMT-2021-BLG-0192Lb is a
∼2MNep planet orbiting an M-dwarf, and KMT-2021-BLG-2294Lb is a
∼1.25MNep planet orbiting a very-low-mass M-dwarf or a brown dwarf.
These by-eye planet detections provide an important comparison sample
to the sample selected with the AnomalyFinder algorithm, and in
particular, KMT-2021-BLG-2294 is a case of a planet detected by eye
but not by algorithm. KMT-2021-BLG-2294Lb is part of a population of
microlensing planets around very-low-mass host stars that spans the
full range of planet masses, in contrast to the planet population at
≲0.1au, which shows a strong preference for small planets.
Description:
The KMTNet observations are made using three identical 1.6m telescopes
with wide-field cameras (i.e., 2x2deg field of view). The telescope
network consists of three sites in well-separated timezones, which are
located at the Cerro Tololo Inter-American Observatory in Chile
(KMTC), the South African Astronomical Observatory in South Africa
(KMTS), and the Siding Spring Observatory in Australia (KMTA). For
KMT-2021-BLG-0192, the Microlensing Observations in Astrophysics (MOA)
independently detected the identical event (i.e., MOA-2021-BLG-080 on
2021 Apr 10). Thus, we incorporate the MOA observations in the
analysis.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 94 3 Observations of 2021 planetary events
fig1.dat 62 1059 Observed Light curves of KMT-2021-BLG-0119
fig5.dat 62 4676 Observed Light curves of KMT-2021-BLG-0192
fig8.dat 62 8254 Observed Light curves of KMT-2021-BLG-2294
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See also:
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
J/A+A/533/A134 : Abundances of microlensed stars in the Bulge (Bensby+, 2011)
J/A+A/549/A109 : HARPS XXXI. The M-dwarf sample (Bonfils+, 2013)
J/AJ/162/163 : Systematic KMTNet Planetary Anomaly Search. I. (Zang+, 2021)
J/AJ/162/267 : Iband light curve OGLE-2019-BLG-1058 with KMTNet (Shin+, 2021)
J/AJ/163/43 : Systematic KMTNet Planetary Anomaly Search. II. (Hwang+, 2022)
J/AJ/164/180 : Mass Production 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- 20 I2 h RAh [17/18] Hour of right ascension (J2000)
22- 23 I2 min RAm Minute of right ascension (J2000)
25- 29 F5.2 s RAs Second of right ascension (J2000)
31 A1 --- DE- [-] Sign of declination (J2000)
33- 34 I2 deg DEd [28/30] Degree of declination (J2000)
36- 37 I2 arcmin DEm Arcminute of declination (J2000)
39- 43 F5.2 arcsec DEs Arcsecond of declination (J2000)
45- 50 F6.3 deg GLON [-0.16/2.58] Galactic longitude
52- 57 F6.3 deg GLAT [-6.16/-1.82] Galactic latitude
59- 70 A12 --- Field KMTNet Field
72- 74 F3.1 /h Gamma [1/4] Γ
76- 79 F4.2 --- A [0.38/2.06] Extinction (AI)
81- 84 I4 yr Obs.Y [2021] Alert date, year
86- 87 I2 "month" Obs.M [3/8] Alert date, month
89- 90 I2 d Obs.D Alert date, day
92- 94 A3 --- Add Additional observation(s)
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Byte-by-byte Description of file: fig[158].dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- Inst Telescope used (1)
6- 7 I2 --- Field ? KMTNet survey field number
9- 9 A1 --- Filt Filter (2)
11- 21 F11.6 d HJD Heliocentric Julian Date; HJD-2450000.0
23- 31 F9.6 mag omag Observed magnitude in Filter
33- 40 F8.6 mag e_omag Uncertainty of omag
42- 49 F8.6 arcsec FWHM ? Seeing Full-width at half max
51- 62 F12.6 --- BG ? Background flux, in ADU
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Note (1): Telescopes as follows:
KMTC = 1.6m KMTNet telescope located at the Cerro Tololo Inter-American
Observatory in Chile
KMTS = 1.6m KMTNet telescope located at the South African Astronomical
Observatory in South Africa
KMTA = 1.6m KMTNet telescope located at the Siding Spring Observatory
in Australia
MOA = 1.8m telescope located at the University of Canterbury Mount John
Observatory in New Zealand.
Note (2): Filters as follows:
R = "MOA-Red" filter (wavelength ranges: 609 to 1109nm, Transmission
ranges: 0.0 to 0.978), which is roughly the sum of the Johnson-Cousins
"R" and "I" bands.
I = Johnson-Cousins "I" filter (effective central wavelength 879.7nm,
FWHM 289.2nm).
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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
Ryu et al. Paper II : 2023AJ....165...83R 2023AJ....165...83R Cat. J/AJ/165/83
(End) Prepared by [AAS], Coralie Fix [CDS], 23-May-2023