干旱区生态环境知识资源中心(Arid): OGLE-2014-BLG-0319: A Sub-Jupiter-mass Planetary Event Encountered Degeneracy with Different Mass Ratios and Lens-source Relative Proper Motions

Arid

DOI	10.3847/1538-3881/ac4960
	OGLE-2014-BLG-0319: A Sub-Jupiter-mass Planetary Event Encountered Degeneracy with Different Mass Ratios and Lens-source Relative Proper Motions
	Miyazaki, Shota; Suzuki, Daisuke; Udalski, Andrzej; Koshimoto, Naoki; Bennett, David P.; Sumi, Takahiro; Rattenbury, Nicholas; Cheongho, Han; Abe, Fumio; Barry, Richard K.; Bhattacharya, Aparna; Bond, Ian A.; Fukui, Akihiko; Fujii, Hirosane; Hirao, Yuki; Silva, Stela Ishitani; Itow, Yoshitaka; Kirikawa, Rintaro; Kondo, Iona; Munford, Brandon; Matsubara, Yutaka; Matsumoto, Sho; Muraki, Yasushi; Okamura, Arisa; Olmschenk, Greg; Ranc, Clement; Satoh, Yuki K.; Toda, Taiga; Tristram, Paul J.; Yama, Hibiki; Yonehara, Atsunori; Poleski, Radek; Mroz, Przemek; Skowron, Jan; Szymanski, Michal K.; Soszynski, Igor; Pietrukowicz, Pawel; Kozlowski, Syzmon; Ulaczyk, Krzysztof; Wyrzykowski, Lukasz
通讯作者	Miyazaki, S (corresponding author)，Osaka Univ, Grad Sch Sci, Dept Earth & Space Sci, 1-1 Machikaneyama, Toyonaka, Osaka 5600043, Japan.
来源期刊	ASTRONOMICAL JOURNAL
ISSN	0004-6256
EISSN	1538-3881
出版年	2022
卷号	163 期号:3
英文摘要	We report the discovery of a sub-Jovian-mass planet, OGLE-2014-BLG-0319Lb. The characteristics of this planet will be added into a future extended statistical analysis of the Microlensing Observations in Astrophysics (MOA) collaboration. The planetary anomaly of the light curve is characterized by MOA and OGLE survey observations and results in three degenerate models with different planetary-mass ratios of q= (10.3, 6.6, 4.5) x 10(-4). We find that the last two models require unreasonably small lens-source relative proper motions mu(rel) similar to 1 mas yr(-1). Considering Galactic prior probabilities, we rule out these two models from the final result. We conduct a Bayesian analysis to estimate physical properties of the lens system using a Galactic model and find that the lens system is composed of a 0.49(-0.27)(+0.35) M-Jup sub-Jovian planet orbiting a 0.47(-0.25)(+0.33) M-circle dot M dwarf near the Galactic Bulge. This analysis demonstrates that Galactic priors are useful to resolve this type of model degeneracy. This is important for estimating the mass-ratio function statistically. However, this method would be unlikely successful in shorter timescale events, which are mostly due to low-mass objects, like brown dwarfs or free-floating planets. Therefore, careful treatment is needed for estimating the mass-ratio function of the companions around such low-mass hosts, which only the microlensing can probe.
类型	Article
语种	英语
开放获取类型	hybrid, Green Accepted, Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000753626600001
WOS关键词	GALACTIC BULGE ; MICROLENSING SURVEY ; SYSTEMS ; STARS ; FREQUENCY ; BOUNDARY ; NEPTUNE ; DESERT ; MODEL ; HOST
WOS类目	Astronomy & Astrophysics
WOS研究方向	Astronomy & Astrophysics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/376240
作者单位	[Miyazaki, Shota; Suzuki, Daisuke; Sumi, Takahiro; Fujii, Hirosane; Hirao, Yuki; Kirikawa, Rintaro; Kondo, Iona; Matsumoto, Sho; Okamura, Arisa; Satoh, Yuki K.; Toda, Taiga; Yama, Hibiki] Osaka Univ, Grad Sch Sci, Dept Earth & Space Sci, 1-1 Machikaneyama, Toyonaka, Osaka 5600043, Japan; [Udalski, Andrzej; Poleski, Radek; Skowron, Jan; Szymanski, Michal K.; Soszynski, Igor; Pietrukowicz, Pawel; Kozlowski, Syzmon; Ulaczyk, Krzysztof; Wyrzykowski, Lukasz] Univ Warsaw, Astron Observ, AI Ujazdowskie 4, PL-00478 Warsaw, Poland; [Koshimoto, Naoki; Bennett, David P.; Barry, Richard K.; Bhattacharya, Aparna; Silva, Stela Ishitani; Olmschenk, Greg] NASA, Goddard Space Flight Ctr, Code 667, Greenbelt, MD 20771 USA; [Koshimoto, Naoki; Bennett, David P.] Univ Maryland, Dept Astron, College Pk, MD 20742 USA; [Rattenbury, Nicholas; Munford, Brandon] Univ Auckland, Dept Phys, Private Bag 92019, Auckland, New Zealand; [Cheongho, Han] Chungbengland Natl Univ, Dept Phys, Cheongju 28644, South Korea; [Abe, Fumio; Itow, Yosh...
推荐引用方式 GB/T 7714	Miyazaki, Shota,Suzuki, Daisuke,Udalski, Andrzej,et al. OGLE-2014-BLG-0319: A Sub-Jupiter-mass Planetary Event Encountered Degeneracy with Different Mass Ratios and Lens-source Relative Proper Motions[J],2022,163(3).
APA	Miyazaki, Shota.,Suzuki, Daisuke.,Udalski, Andrzej.,Koshimoto, Naoki.,Bennett, David P..,...&Wyrzykowski, Lukasz.(2022).OGLE-2014-BLG-0319: A Sub-Jupiter-mass Planetary Event Encountered Degeneracy with Different Mass Ratios and Lens-source Relative Proper Motions.ASTRONOMICAL JOURNAL,163(3).
MLA	Miyazaki, Shota,et al."OGLE-2014-BLG-0319: A Sub-Jupiter-mass Planetary Event Encountered Degeneracy with Different Mass Ratios and Lens-source Relative Proper Motions".ASTRONOMICAL JOURNAL 163.3(2022).