2018MNRAS.479.5522W


C.D.S. - SIMBAD4 rel 1.7 - 2020.02.23CET09:37:48

2018MNRAS.479.5522W - Mon. Not. R. Astron. Soc., 479, 5522-5531 (2018/October-0)

Evidence of a past disc-disc encounter: HV and DO Tau.

WINTER A.J., BOOTH R.A. and CLARKE C.J.

Abstract (from CDS):

Theory and observations suggest that star formation occurs hierarchically due to the fragmentation of giant molecular clouds. In this case we would expect substructure and enhanced stellar multiplicity in the primordial cluster. This substructure is expected to decay quickly in most environments, however historic stellar encounters might leave imprints in a protoplanetary disc (PPD) population. In a low-density environment such as Taurus, tidal tails from violent star-disc or disc-disc encounters might be preserved over timescales sufficient to be observed. In this work, we investigate the possibility that just such an event occurred between HV Tau C (itself a component of a triple system) and DO Tau ∼0.1 Myr ago, as evidenced by an apparent 'bridge' structure evident in the 160µm emission. By modelling the encounter using smoothed particle hydrodynamics (SPH) we reproduce the main features of the observed extended structure ('V'-shaped emission pointing west of HV Tau and a tail-like structure extending east of DO Tau). We suggest that HV Tau and DO Tau formed together in a quadruple system on a scale of ∼5000 au (0.025 pc).

Abstract Copyright: © 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): accretion, accretion discs - protoplanetary discs - circumstellar matter - stars: formation - stars: kinematics and dynamics - submillimetre: ISM

Simbad objects: 6

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Number of rows : 6

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 V* DO Tau TT* 04 38 28.5882167490 +26 10 49.472067634 12.78 13.44 12.30 13.01   M1Ve 307 1
2 NAME HV Tau AB Y*O 04 38 35.2903493114 +26 10 38.646251388           M1Ve 96 0
3 V* HV Tau TT* 04 38 35.3 +26 10 39           M4.1 107 0
4 NAME HV Tau C TT* 04 38 35.5121708248 +26 10 41.334466864         14.90 K6 84 0
5 NAME Taurus Dark Cloud SFR 04 41.0 +25 52           ~ 3374 0
6 V* RW Aur TT* 05 07 49.538 +30 24 05.07   10.86 9.60 9.95   K1/5e+K5e 703 0

    Equat.    Gal    SGal    Ecl

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2020.02.23-09:37:48

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