A revised distance to IRAS 16293-2422 from VLBA astrometry of associated water masers

IRAS 16293-2422 is a very well-studied young stellar system seen in projection towards the L1689N cloud in the Ophiuchus complex. However, its distance is still uncertain; there is a range of values from 120 pc to 180 pc. Our goal is to measure the trigonometric parallax of this young star by means...

Full description

Saved in:
Bibliographic Details
Published in:Astronomy and astrophysics (Berlin) 2018-06, Vol.614, p.A20
Main Authors: Dzib, S. A., Ortiz-León, G. N., Hernández-Gómez, A., Loinard, L., Mioduszewski, A. J., Claussen, M., Menten, K. M., Caux, E., Sanna, A.
Format: Article
Language:English
Subjects:
Astrometry
Astrophysics
Ejection
Kinematics
masers
Parallax
Sciences of the Universe
stars: formation
stars: individual: IRAS 1629-2422
techniques: interferometric
Water masers
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:IRAS 16293-2422 is a very well-studied young stellar system seen in projection towards the L1689N cloud in the Ophiuchus complex. However, its distance is still uncertain; there is a range of values from 120 pc to 180 pc. Our goal is to measure the trigonometric parallax of this young star by means of H2O maser emission. We use archival data from 15 epochs of VLBA observations of the 22.2 GHz water maser line. By modeling the displacement on the sky of the H2O maser spots, we derived a trigonometric parallax of 7.1 ± 1.3 mas, corresponding to a distance of 141−21+30 pc. This new distance is in good agreement with recent values obtained for other magnetically active young stars in the L1689 cloud. We relate the kinematics of these masers with the outflows and the recent ejections powered by source A in the system.
ISSN:0004-6361
1432-0746
1432-0756
DOI:10.1051/0004-6361/201732093