A Tail Structure Associated with a Protoplanetary Disk around SU Aurigae

Akiyama, Eiji; Vorobyov, Eduard I.; Liu, Hauyu Baobabu et al.

The Astronomical journal, 2019, 157(4), 165

Permalink : https://hdl.handle.net/2115/77312

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アクセス権
open access
URI
https://hdl.handle.net/2115/77312
タイトル
A Tail Structure Associated with a Protoplanetary Disk around SU Aurigae
著者
Akiyama, Eiji ; Vorobyov, Eduard I. ; Liu, Hauyu Baobabu ; Dong, Ruobing ; de Leon, Jerome ; Liu, Sheng-Yuan ; Tamura, Motohide
e-Rad_Researcher
30647623
著者名
Akiyama, Eiji
著者名
Vorobyov, Eduard I.
著者名
Liu, Hauyu Baobabu
著者名
Dong, Ruobing
著者名
de Leon, Jerome
著者名
Liu, Sheng-Yuan
e-Rad_Researcher
00260018
著者名
Tamura, Motohide
言語
英語
キーワード
planetary systems
stars: individual (SU Aur)
stars: pre-main sequence
techniques: interferometric
発行日
2019-04-04
出版者
IOP Publishing
収録物名
The Astronomical journal
巻(号)
157(4)
ページ
165
抄録
We present Atacama Large Millimeter/submillimeter Array observations of the CO (J = 2 - 1) line emission from a protoplanetary disk around T-Tauri star SU Aurigae (hereafter SU Aur). Previous observations in optical and near-infrared wavelengths find a unique structure in SU Aur. One of the highlights of the observational results is that an extended tail-like structure is associated with the disk, indicating mass transfer from or into the disk. Here we report the discovery of the counterpart of the tail-like structure in CO gas extending more than 1000 au long. Based on geometric and kinematic perspectives, both of the disk and the tail-like structure components physically connect to each other. Several theoretical studies predicted the observed tail-like structure via the following possible scenarios: (1) a gaseous stream from the molecular cloud remnant, (2) collision with a (sub)stellar intruder or a gaseous blob from the ambient cloud, and (3) ejection of a planetary or brown dwarf mass object due to gravitational instability via multibody gravitational interaction. Since the tail-like structures associated with the SU Aur disk are a new example following RW Aurigae, some disks may experience the internal or external interaction and drastically lose mass during disk evolution.
資源タイプ
学術雑誌論文
出版タイプ
Accepted Manuscript
権利情報
This is an author-created, un-copyedited version of an article accepted for publication in The Astronomical journal. The publisher is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at https://doi.org/10.3847/1538-3881/ab0ae4.
PISSN
0004-6256
NCID
AA00552749
関連情報 (isVersionOf)
出版社版DOI
https://doi.org/10.3847/1538-3881/ab0ae4