MOA-2020-BLG-208Lb: Cool Sub-Saturn-Mass Planet Within Predicted Desert

Simple item page
aut.relation.endpage175
aut.relation.issue4
aut.relation.journalAstronomical Journal
aut.relation.startpage175
aut.relation.volume165
dc.contributor.authorOlmschenk, G
dc.contributor.authorBennett, DP
dc.contributor.authorBond, IA
dc.contributor.authorZang, W
dc.contributor.authorJung, YK
dc.contributor.authorYee, JC
dc.contributor.authorBachelet, E
dc.contributor.authorAbe, F
dc.contributor.authorBarry, RK
dc.contributor.authorBhattacharya, A
dc.contributor.authorFujii, H
dc.contributor.authorFukui, A
dc.contributor.authorHirao, Y
dc.contributor.authorSilva, SI
dc.contributor.authorItow, Y
dc.contributor.authorKirikawa, R
dc.contributor.authorKondo, I
dc.contributor.authorKoshimoto, N
dc.contributor.authorMatsubara, Y
dc.contributor.authorMatsumoto, S
dc.contributor.authorMiyazaki, S
dc.contributor.authorMunford, B
dc.contributor.authorMuraki, Y
dc.contributor.authorOkamura, A
dc.contributor.authorRanc, C
dc.contributor.authorRattenbury, NJ
dc.contributor.authorSatoh, Y
dc.contributor.authorSumi, T
dc.contributor.authorSuzuki, D
dc.contributor.authorToda, T
dc.contributor.authorTristram, PJ
dc.contributor.authorVandorou, A
dc.contributor.authorYama, H
dc.contributor.authorAlbrow, MD
dc.contributor.authorCha, SM
dc.contributor.authorChung, SJ
dc.contributor.authorGould, A
dc.contributor.authorHan, C
dc.contributor.authorHwang, KH
dc.contributor.authorKim, DJ
dc.contributor.authorKim, HW
dc.contributor.authorKim, SL
dc.contributor.authorLee, CU
dc.contributor.authorLee, DJ
dc.contributor.authorLee, Y
dc.contributor.authorPark, BG
dc.contributor.authorPogge, RW
dc.contributor.authorRyu, YH
dc.contributor.authorShin, IG
dc.contributor.authorShvartzvald, Y
dc.contributor.authorChristie, G
dc.contributor.authorCooper, T
dc.contributor.authorDrummond, J
dc.contributor.authorGreen, J
dc.contributor.authorHennerley, S
dc.contributor.authorMcCormick, J
dc.contributor.authorMonard, LAG
dc.contributor.authorNatusch, T
dc.contributor.authorPorritt, I
dc.contributor.authorTan, TG
dc.contributor.authorMao, S
dc.contributor.authorMaoz, D
dc.contributor.authorPenny, MT
dc.contributor.authorZhu, W
dc.contributor.authorBozza, V
dc.contributor.authorCassan, A
dc.contributor.authorDominik, M
dc.contributor.authorHundertmark, M
dc.contributor.authorJaimes, RF
dc.contributor.authorKruszyńska, K
dc.contributor.authorRybicki, KA
dc.contributor.authorStreet, RA
dc.contributor.authorTsapras, Y
dc.contributor.authorWambsganss, J
dc.contributor.authorWyrzykowski
dc.contributor.authorZieliński, P
dc.contributor.authorRau, G
dc.date.accessioned2023-05-15T23:58:12Z
dc.date.available2023-05-15T23:58:12Z
dc.date.issued2023-03-24
dc.description.abstractWe analyze the MOA-2020-BLG-208 gravitational microlensing event and present the discovery and characterization of a new planet, MOA-2020-BLG-208Lb, with an estimated sub-Saturn mass. With a mass ratio q=3.17-0.26+0.28×10-4, the planet lies near the peak of the mass-ratio function derived by the MOA collaboration and near the edge of expected sample sensitivity. For these estimates we provide results using two mass-law priors: one assuming that all stars have an equal planet-hosting probability, and the other assuming that planets are more likely to orbit around more massive stars. In the first scenario, we estimate that the lens system is likely to be a planet of mass mplanet=46-24+42M⊕ and a host star of mass Mhost=0.43-0.23+0.39M⊙, located at a distance DL=7.49-1.13+0.99kpc . For the second scenario, we estimate mplanet=69-34+37M⊕, Mhost=0.66-0.32+0.35M⊙, and DL=7.81-0.93+0.93kpc . The planet has a projected separation as a fraction of the Einstein ring radius s=1.3807-0.0018+0.0018 . As a cool sub-Saturn-mass planet, this planet adds to a growing collection of evidence for revised planetary formation models.
dc.identifier.citationAstronomical Journal, ISSN: 0004-6256 (Print); 1538-3881 (Online), American Astronomical Society, 165(4), 175-175. doi: 10.3847/1538-3881/acbcc8
dc.identifier.doi10.3847/1538-3881/acbcc8
dc.identifier.issn0004-6256
dc.identifier.issn1538-3881
dc.identifier.urihttps://hdl.handle.net/10292/16156
dc.publisherAmerican Astronomical Society
dc.relation.urihttps://iopscience.iop.org/article/10.3847/1538-3881/acbcc8
dc.rights.accessrightsOpenAccess
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subject5109 Space Sciences
dc.subject51 Physical Sciences
dc.subject0201 Astronomical and Space Sciences
dc.subjectAstronomy & Astrophysics
dc.subject5101 Astronomical sciences
dc.subject5107 Particle and high energy physics
dc.titleMOA-2020-BLG-208Lb: Cool Sub-Saturn-Mass Planet Within Predicted Desert
dc.typeJournal Article
pubs.elements-id501895
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Olmschenk_2023_AJ_165_175.pdf
Size:
12.09 MB
Format:
Adobe Portable Document Format
Description:
Journal article
Download
Collections
School of Engineering, Computer and Mathematical Sciences - Te Kura Mātai Pūhanga, Rorohiko, Pāngarau