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| DOI | 10.3847/1538-3881/abcc60 |
| MOA-2009-BLG-319Lb: A Sub-Saturn Planet inside the Predicted Mass Desert | |
| Terry, Sean K.; Bhattacharya, Aparna; Bennett, David P.; Beaulieu, Jean-Philippe; Koshimoto, Naoki; Blackman, Joshua W.; Bond, Ian A.; Cole, Andrew A.; Henderson, Calen B.; Lu, Jessica R.; Marquette, Jean Baptiste; Ranc, Clement; Vandorou, Aikaterini | |
| 通讯作者 | Terry, SK (corresponding author), Catholic Univ Amer, Dept Phys, 620 Michigan Ave NE, Washington, DC 20064 USA. ; Terry, SK (corresponding author), NASA, Goddard Space Flight Ctr, Code 667, Greenbelt, MD 20771 USA. |
| 来源期刊 | ASTRONOMICAL JOURNAL
 |
| ISSN | 0004-6256 |
| EISSN | 1538-3881 |
| 出版年 | 2021 |
| 卷号 | 161期号:2 |
| 英文摘要 | We present an adaptive optics (AO) analysis of images from the Keck II telescope NIRC2 instrument of the planetary microlensing event MOA-2009-BLG-319. The similar to 10 yr baseline between the event and the Keck observations allows the planetary host star to be detected at a separation of 66.5 1.7 mas from the source star, consistent with the light-curve model prediction. The combination of the host star brightness and light-curve parameters yields host star and planet masses of M-host = 0.524 0.048M and m(p) = 67.3 6.2M(circle plus) at a distance of D-L = 7.1 0.7 kpc. The star-planet projected separation is 2.03 0.21 au. The planet-to-star mass ratio of this system, q = (3.857 0.029) x 10(-4), places it in the predicted planet desert at 10(-4) q < 4 x 10(-4) according to the runaway gas accretion scenario of the core accretion theory. Seven of the 30 planets in the Suzuki et al. sample fall in this mass ratio range, and this is the third with a measured host mass. All three of these host stars have masses of 0.5 <= M-host/M <= 0.7, which implies that this predicted mass ratio gap is filled with planets that have host stars within a factor of two of 1M. This suggests that runaway gas accretion does not play a major role in determining giant planet masses for stars somewhat less massive than the Sun. Our analysis has been accomplished with a modified DAOPHOT code that has been designed to measure the brightness and positions of closely blended stars. This will aid in the development of the primary method that the Nancy Grace Roman Space Telescope mission will use to determine the masses of microlens planets and their hosts. |
| 类型 | Article |
| 语种 | 英语 |
| 开放获取类型 | Green Accepted, Green Submitted |
| 收录类别 | SCI-E |
| WOS记录号 | WOS:000605469000001 |
| WOS关键词 | GALACTIC BULGE ; LUMINOSITY-RELATION ; STARS ; PROGRAM ; SYSTEMS ; BIAS |
| WOS类目 | Astronomy & Astrophysics |
| WOS研究方向 | Astronomy & Astrophysics |
| 来源机构 | University of California, Berkeley |
| 资源类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/347732 |
| 作者单位 | [Terry, Sean K.] Catholic Univ Amer, Dept Phys, 620 Michigan Ave NE, Washington, DC 20064 USA; [Terry, Sean K.; Bhattacharya, Aparna; Bennett, David P.; Koshimoto, Naoki; Ranc, Clement] NASA, Goddard Space Flight Ctr, Code 667, Greenbelt, MD 20771 USA; [Bhattacharya, Aparna; Bennett, David P.; Koshimoto, Naoki] Univ Maryland, Dept Astron, College Pk, MD 20742 USA; [Beaulieu, Jean-Philippe; Blackman, Joshua W.; Cole, Andrew A.; Vandorou, Aikaterini] Univ Tasmania, Sch Nat Sci, Private Bag 37, Hobart, Tas 7001, Australia; [Koshimoto, Naoki] Univ Tokyo, Grad Sch Sci, Dept Astron, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1130033, Japan; [Bond, Ian A.] Massey Univ, Inst Math & Nat Sci, Auckland 0745, New Zealand; [Henderson, Calen B.] CALTECH, NASA, Exoplanet Sci Inst, IPAC, Pasadena, CA 91125 USA; [Lu, Jessica R.] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94701 USA; [Marquette, Jean Baptiste] Univ Bordeaux, CNRS, Lab Astrophys Bordeaux, B18N,Alle Geoffroy St Hilaire, F-33615 Pessac, France |
| 推荐引用方式 GB/T 7714 | Terry, Sean K.,Bhattacharya, Aparna,Bennett, David P.,et al. MOA-2009-BLG-319Lb: A Sub-Saturn Planet inside the Predicted Mass Desert[J]. University of California, Berkeley,2021,161(2). |
| APA | Terry, Sean K..,Bhattacharya, Aparna.,Bennett, David P..,Beaulieu, Jean-Philippe.,Koshimoto, Naoki.,...&Vandorou, Aikaterini.(2021).MOA-2009-BLG-319Lb: A Sub-Saturn Planet inside the Predicted Mass Desert.ASTRONOMICAL JOURNAL,161(2). |
| MLA | Terry, Sean K.,et al."MOA-2009-BLG-319Lb: A Sub-Saturn Planet inside the Predicted Mass Desert".ASTRONOMICAL JOURNAL 161.2(2021). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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