SIMP J013656.5+093347
.jpg) 藝術家想像的SIMP J013656.5+093347及其極光。 | |
| 觀測資料 曆元 J2000 | |
|---|---|
| 星座 | 雙魚座 |
| 星官 | |
| 赤經 | 01h 36m 57s |
| 赤緯 | +09° 33′ 47.3″ |
| 視星等（V） | |
| 特性 | |
| 光谱分类 | T2.5[1] |
| 视星等 (J) | 13.455 ± 0.030 |
| 视星等 (H) | 12.771 ± 0.032 |
| 视星等 (K) | 12.562 ± 0.024 |
| 天体测定 | |
| 自行 (μ) | 赤经：1238.982 ± 1.189[2] mas/yr 赤纬：-17.353 ± 0.841[2] mas/yr |
| 视差 (π) | 163.4478 ± 0.4629[3] mas |
| 距离 | 19.95 ± 0.06 ly (6.12 ± 0.02 pc) |
| 詳細資料 | |
| 表面重力 (log g) | 4.31 ± 0.03[4] |
| 溫度 | 1098 ± 6[4] K |
| 自轉 | 2.406 ± 0.008[5] hours |
| 年齡 | 200 ± 50[4] Myr |
| 其他命名 | |
2MASS J01365662+0933473;
IPMS J013656.57+093347.3; IBIS J013656.57+093347.3 | |
| 參考資料庫 | |
| SIMBAD | 资料 |
  SIMP0136 SIMP J013656.5+093347在雙魚座的位置 | |
SIMP J013656.5+093347 (縮寫為 SIMP0136)是一顆位於雙魚座棕矮星或行星質量天體[4]距離地球19.9光年。它屬於光譜等級 T2.5[1]，由於其自行，其位置每年在赤經上移動約 1.24 角秒。[2]
這顆棕矮星提供了T型棕矮星之間週期性變化通量變化的第一個證據。這被解釋為在該物體2.4小時的旋轉週期內出現和消失的天氣模式的標誌。這條光曲線的形狀隨著時間尺度而演變，這被解釋為大氣中雲模式演變的標誌。[5]
2017年，宣布該物體的質量可能低至12.7個木星質量，可能被視為一顆流浪行星而不是棕矮星，因為它似乎是相對年輕的2億恆星年齡船底座的成員-附近的恆星移動團。[4][6][7]
參考
[编辑]- ^ 1.0 1.1 Artigau; et al. Photometric Variability of the T2.5 Brown Dwarf SIMP J013656.5+093347: Evidence for Evolving Weather Patterns. The Astrophysical Journal. 2009, 701 (2): 1534–1539. Bibcode:2009ApJ...701.1534A. S2CID 3123957. arXiv:0906.3514
. doi:10.1088/0004-637X/701/2/1534.
- ^ 2.0 2.1 2.2 Gaia Collaboration. Gaia Data Release 2 - Summary of the contents and survey properties. Astronomy & Astrophysics. 2018-08-01, 616: A1. Bibcode:2018A&A...616A...1G. ISSN 0004-6361. S2CID 49211658. arXiv:1804.09365 . doi:10.1051/0004-6361/201833051 （英语）.
- ^ Brown, A. G. A.; et al. Gaia Early Data Release 3: Summary of the contents and survey properties. Astronomy & Astrophysics. 2021, 649: A1. Bibcode:2021A&A...649A...1G. S2CID 227254300. arXiv:2012.01533 . doi:10.1051/0004-6361/202039657 . 已忽略未知参数
|collaboration=(帮助) (勘误: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR. - ^ 4.0 4.1 4.2 4.3 4.4 Gagné, Jonathan; Faherty, Jacqueline K.; Burgasser, Adam J.; Artigau, Étienne; Bouchard, Sandie; Albert, Loïc; Lafrenière, David; Doyon, René; Bardalez-Gagliuffi, Daniella C. SIMP J013656.5+093347 is Likely a Planetary-Mass Object in the Carina-Near Moving Group. The Astrophysical Journal. 2017-05-15, 841 (1): L1. Bibcode:2017ApJ...841L...1G. ISSN 2041-8213. S2CID 119024210. arXiv:1705.01625 . doi:10.3847/2041-8213/aa70e2.
- ^ 5.0 5.1 Croll, Bryce; Muirhead, Philip S.; Lichtman, Jack; Han, Eunkyu; Dalba, Paul A.; Radigan, Jacqueline. Long-term, Multiwavelength Light Curves of Ultra-Cool Dwarfs: II. The evolving Light Curves of the T2.5 SIMP 0136 & the Uncorrelated Light Curves of the M9 TVLM 513. September 2016. arXiv:1609.03587 [astro-ph.SR] （英语）.
- ^ Presto change-o! Brown dwarf star is now a planet. newatlas.com. 2017-05-11 [2018-08-07]. （原始内容存档于2023-03-21） （英语）.
- ^ Starr, Michelle. There Is an Absolutely Gigantic Rogue Planet Wandering Our Galactic Neighbourhood. ScienceAlert.com. 3 August 2018 [3 August 2018]. （原始内容存档于2023-05-10）.
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