For faster navigation, this Iframe is preloading the Wikiwand page for 金牛座DL.

金牛座DL

金牛座DL

依據凌日系外行星巡天衛星(TESS)
的數據繪製的金牛座DL光變曲線[1]
觀測資料
曆元 J2000
星座 金牛座
星官
赤經 04h 33m 39.0767s[2]
赤緯 +25° 20′ 38.0980″[2]
視星等(V) 13.06[3]
特性
演化阶段主序前星
光谱分类K7[4]
视星等 (U)14.04[2]
视星等 (g)12.1368[5]
视星等 (B)14.59[2]
视星等 (R)11.85[2]
变星类型T Tau[4]
天体测定
自行 (μ) 赤经:9.25+0.02
mas/yr
赤纬:−18.497+0.017
mas/yr
视差 (π)6.2525 ± 0.0194[5] mas
距离522 ± 2 ly
(159.9 ± 0.5 pc)
詳細資料
質量0.72+0.11
[4] M
亮度0.68[4] L
溫度4060[4] K
年齡1[6] Myr
其他命名
2MASS J04333906+2520382、TIC 268444139、HBC 58、UBV 4371、Gaia DR2 148010281032823552
參考資料庫
SIMBAD资料

金牛座DL位於星座金牛座,是一顆主序前星的年輕金牛T星,距離地球大約522 光年,屬於金牛座分子雲的成員。它部分被富含一氧化碳的前景氣體雲遮蔽[4],並且仍在吸積質量,由於吸積能量的釋放而產生0.14 L[3]。恆星光譜顯示了電離氧、氮、硫和鐵的譜線[3]

原行星盤

[编辑]

恆星被一個巨大的,約(0.029+0.003
 M原行星盤環繞著[7],它粗大但相對扁平,富含大顆粒,呈現顯著的演化狀態。在如此巨大的質量下,圓盤可能會形成一顆棕矮星。圓盤半徑約100AU,但來自恆星的引力可能使其邊緣處於不穩定的狀態[7]。磁碟有多個塵埃環與解析度差的間隙[8]

疑似行星伴星

[编辑]

天體2MASS J04333960+2520420,在2008年被命名為DL Tau/cc1,是一顆疑似超級木星的行星,質量約為12MJ,在金牛座DL周圍的可能約束軌道上。這個天體要麼是一顆次棕矮星,要麼是一顆低質量的棕矮星,甚至是一顆低質量的超冷紅矮星。對年輕的恆星系統來說,如果被吸積盤強烈遮蔽並不罕見[6]

金牛座DL的行星系
成員
(依恆星距離)
质量 半長軸
(AU)
轨道周期
()
離心率 傾角 半径
原行星盤 8.18+0.89
[7] — 520[4] AU
44.33+0.16
[8]。°

參考資料

[编辑]
  1. ^ MAST: Barbara A. Mikulski Archive for Space Telescopes. Space Telescope Science Institute. [8 December 2021]. (原始内容存档于2023-03-27). 
  2. ^ 2.0 2.1 2.2 2.3 2.4 V* DL Tau. SIMBAD. 斯特拉斯堡天文資料中心. 
  3. ^ 3.0 3.1 3.2 Giannini, T.; Nisini, B.; Antoniucci, S.; Biazzo, K.; Alcalá, J.; Bacciotti, F.; Fedele, D.; Frasca, A.; Harutyunyan, A.; Munari, U.; Rigliaco, E.; Vitali, F. GIARPS High-resolution Observations of T Tauri stars (GHOsT). Astronomy & Astrophysics. 2019, 631: A44. S2CID 202719615. arXiv:1909.10392可免费查阅. doi:10.1051/0004-6361/201936085. 
  4. ^ 4.0 4.1 4.2 4.3 4.4 4.5 4.6 Simon, M.; Dutrey, A.; Guilloteau, S. Dynamical Masses of T Tauri Stars and Calibration of Pre–Main‐Sequence Evolution. The Astrophysical Journal. 2000, 545 (2): 1034–1043. Bibcode:2000ApJ...545.1034S. S2CID 18064837. arXiv:astro-ph/0008370可免费查阅. doi:10.1086/317838. 
  5. ^ 5.0 5.1 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可免费查阅. doi:10.1051/0004-6361/202039657可免费查阅.  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.
  6. ^ 6.0 6.1 Itoh, Yoichi; Tamura, Motohide; Hayashi, Masahiko; Oasa, Yumiko; Hayashi, Saeko S.; Fukagawa, Misato; Kudo, Tomoyuki; Mayama, Satoshi; Ishii, Miki; Pyo, Tae-Soo; Yamashita, Takuya; Morino, Junichi. Near-Infrared Spectroscopy of Faint Companions around Young Stellar Objects Associated with the Taurus Molecular Cloud. Publications of the Astronomical Society of Japan. 2008, 60 (2): 209–218. Bibcode:2008PASJ...60..209I. doi:10.1093/pasj/60.2.209可免费查阅. 
  7. ^ 7.0 7.1 7.2 Kwon, Woojin; Looney, Leslie W.; Mundy, Lee G.; Welch, William J., Resolving Protoplanetary Disks at Millimeter Wavelengths with Carma, The Astrophysical Journal, 2015, 808 (1): 102, Bibcode:2015ApJ...808..102K, S2CID 119286150, arXiv:1506.03679可免费查阅, doi:10.1088/0004-637X/808/1/102 
  8. ^ 8.0 8.1 Long, Feng; Pinilla, Paola; Herczeg, Gregory J.; Andrews, Sean M.; Harsono, Daniel; Johnstone, Doug; Ragusa, Enrico; Pascucci, Ilaria; Wilner, David J.; Hendler, Nathan; Jennings, Jeff; Liu, Yao; Lodato, Giuseppe; Menard, Francois; Van De Plas, Gerrit; Dipierro, Giovanni. Dual-wavelength ALMA Observations of Dust Rings in Protoplanetary Disks. The Astrophysical Journal. 2020, 898 (1): 36. Bibcode:2020ApJ...898...36L. S2CID 219401797. arXiv:2006.03120可免费查阅. doi:10.3847/1538-4357/ab9a54. 
{{bottomLinkPreText}} {{bottomLinkText}}
金牛座DL
Listen to this article

This browser is not supported by Wikiwand :(
Wikiwand requires a browser with modern capabilities in order to provide you with the best reading experience.
Please download and use one of the following browsers:

This article was just edited, click to reload
This article has been deleted on Wikipedia (Why?)

Back to homepage

Please click Add in the dialog above
Please click Allow in the top-left corner,
then click Install Now in the dialog
Please click Open in the download dialog,
then click Install
Please click the "Downloads" icon in the Safari toolbar, open the first download in the list,
then click Install
{{::$root.activation.text}}

Install Wikiwand

Install on Chrome Install on Firefox
Don't forget to rate us

Tell your friends about Wikiwand!

Gmail Facebook Twitter Link

Enjoying Wikiwand?

Tell your friends and spread the love:
Share on Gmail Share on Facebook Share on Twitter Share on Buffer

Our magic isn't perfect

You can help our automatic cover photo selection by reporting an unsuitable photo.

This photo is visually disturbing This photo is not a good choice

Thank you for helping!


Your input will affect cover photo selection, along with input from other users.

X

Get ready for Wikiwand 2.0 🎉! the new version arrives on September 1st! Don't want to wait?