2019AJ....157..165A


C.D.S. - SIMBAD4 rel 1.7 - 2020.01.29CET06:59:36

2019AJ....157..165A - Astron. J., 157, 165-165 (2019/April-0)

A tail structure associated with a protoplanetary disk around SU Aurigae.

AKIYAMA E., VOROBYOV E.I., BAOBABU LIU H., DONG R., DE LEON J., LIU S.-Y. and TAMURA M.

Abstract (from CDS):

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.

Abstract Copyright: © 2019. The American Astronomical Society. All rights reserved.

Journal keyword(s): planetary systems - stars: individual: SU Aur - stars: pre-main sequence - techniques: interferometric

Simbad objects: 10

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Number of rows : 10

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NAME Auriga reg 04 20 00.0 +38 05 00           ~ 164 0
2 QSO B0420-0127 QSO 04 23 15.80072776 -01 20 33.0654034   17.50 17.00 16.28   ~ 1028 3
3 NAME Tau-Aur Region SFR 04 30 +25.0           ~ 1189 1
4 V* DO Tau TT* 04 38 28.5882167490 +26 10 49.472067634 12.78 13.44 12.30 13.01   M1Ve 307 1
5 V* HV Tau TT* 04 38 35.3 +26 10 39           M4.1 107 0
6 V* AB Aur Ae* 04 55 45.8459978418 +30 33 04.293281305 7.20 7.16 7.05 6.96 6.70 A0Ve 912 2
7 V* SU Aur TT* 04 55 59.3861369488 +30 34 01.499800471   10.33 9.30 9.17   G2IIIne 527 0
8 V* RW Aur TT* 05 07 49.538 +30 24 05.07   10.86 9.60 9.95   K1/5e+K5e 702 0
9 QSO B0507+179 QSO 05 10 02.36912982 +18 00 41.5816534   20.0 19.0 19.09   ~ 288 1
10 NAME Orion Nebula Cluster OpC 05 35.0 -05 29           ~ 1924 1

    Equat.    Gal    SGal    Ecl

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2020.01.29-06:59:36

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