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Ejection Accretion Structures in YSOs (EASY)

Total Cost €


EC-Contrib. €






Project "EASY" data sheet

The following table provides information about the project.


Organization address
address: Burlington Road 10
city: DUBLIN
postcode: 4

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country Ireland [IE]
 Total cost 1˙853˙090 €
 EC max contribution 1˙853˙090 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2016-ADG
 Funding Scheme ERC-ADG
 Starting year 2017
 Duration (year-month-day) from 2017-10-01   to  2022-09-30


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 


 Project objective

For a number of reasons, in particular their proximity and the abundant range of diagnostics to determine their characteristics, outflows from young stellar objects (YSOs) offer us the best opportunity of discovering how astrophysical jets are generated and the nature of the link between outflows and their accretion disks. Models predict that the jet is initially launched from within 0.1 to a few au of the star and focused on scales at most ten times larger. Thus, even for the nearest star formation region, we need high spatial resolution to image the “central engine” and test current models. With these ideas in mind, and the availability of a whole new set of observational and computational resources, it is proposed to investigate the origin of YSO jets, and the jet/accretion zone link, using a number of highly novel approaches to test magneto-hydrodynamic (MHD) models including: (a) Near-infrared interferometry to determine the spatial distribution and kinematics of the outflow as it is launched as a way of discriminating between competing models. (b) A multi-epoch study of the strength and configuration of the magnetic field of the parent star to see whether model values and geometries agree with observations and the nature of its variability. (c) Examining, through high spatial resolution radio observations, how the ionized component of these jets are collimated very close to the source and how shocks in the flow can give rise to low energy cosmic rays. (d) Use the James Webb Space Telescope (JWST) and, in particular, the Mid-Infrared Instrument (MIRI) and Near-Infrared Spectrograph (NIRSpec) to investigate with high spatial resolution atomic jets from protostars that are still acquiring most of their mass. In addition, we will study how accretion is affected by metallicity by studying young solar-like stars in the low metallicity Magellanic Clouds. In all cases the required observational campaigns have been approved.


year authors and title journal last update
List of publications.
2019 A. Sanna, L. Moscadelli, C. Goddi, M. Beltrán, C. L. Brogan, A. Caratti o Garatti, C. Carrasco-González, T. R. Hunter, F. Massi, M. Padovani
Protostellar Outflows at the EarliesT Stages (POETS)
published pages: L3, ISSN: 0004-6361, DOI: 10.1051/0004-6361/201834551
Astronomy & Astrophysics 623 2019-06-06
2018 M. Koutoulaki, R. Garcia Lopez, A. Natta, A. Caratti o Garatti, D. Coffey, J. Sanchez-Bermudez, T. P. Ray
The circumstellar environment of HD 50138 revealed by VLTI/AMBER at high angular resolution
published pages: A90, ISSN: 0004-6361, DOI: 10.1051/0004-6361/201832814
Astronomy & Astrophysics 614 2019-06-06
2019 E. Koumpia, K. M. Ababakr, W. J. de Wit, R. D. Oudmaijer, A. Caratti o Garatti, P. Boley, H. Linz, S. Kraus, J. S. Vink, J.-B. Le Bouquin
Resolving the MYSO binaries PDS 27 and PDS 37 with VLTI/PIONIER
published pages: L5, ISSN: 0004-6361, DOI: 10.1051/0004-6361/201834624
Astronomy & Astrophysics 623 2019-06-06
2018 R. Fedriani, A. Caratti o Garatti, D. Coffey, R. Garcia Lopez, S. Kraus, G. Weigelt, B. Stecklum, T. P. Ray, C. M. Walmsley
Parsec-scale jets driven by high-mass young stellar objects
published pages: A126, ISSN: 0004-6361, DOI: 10.1051/0004-6361/201732180
Astronomy & Astrophysics 616 2019-06-06
2018 G. D. C. Teixeira, M. S. N. Kumar, L. Smith, P. W. Lucas, C. Morris, J. Borissova, M. J. P. F. G. Monteiro, A. Caratti o Garatti, C. Contreras Peña, D. Froebrich, J. F. Gameiro
Photometric variability of massive young stellar objects
published pages: A41, ISSN: 0004-6361, DOI: 10.1051/0004-6361/201833667
Astronomy & Astrophysics 619 2019-06-06
2018 Paola Pinilla, Antonella Natta, Carlo F. Manara, Luca Ricci, Aleks Scholz, Leonardo Testi
Resolved millimeter-dust continuum cavity around the very low mass young star CIDA 1
published pages: A95, ISSN: 0004-6361, DOI: 10.1051/0004-6361/201832690
Astronomy & Astrophysics 615 2019-06-06
2018 Odysseas Dionatos, Tom Ray, Manuel Güdel
Herschel spectral-line mapping of the HH211 protostellar system
published pages: A84, ISSN: 0004-6361, DOI: 10.1051/0004-6361/201833057
Astronomy & Astrophysics 616 2019-06-06
2018 S J D Purser, R E Ainsworth, T P Ray, D A Green, A M Taylor, A M M Scaife
Constraining the nature of DG Tau A’s thermal and non-thermal radio emission
published pages: 5532-5542, ISSN: 0035-8711, DOI: 10.1093/mnras/sty2649
Monthly Notices of the Royal Astronomical Society 481/4 2019-06-06
2018 R. Cesaroni, L. Moscadelli, R. Neri, A. Sanna, A. Caratti o Garatti, J. Eislöffel, B. Stecklum, T. Ray, C. M. Walmsley
Radio outburst from a massive (proto)star
published pages: A103, ISSN: 0004-6361, DOI: 10.1051/0004-6361/201732238
Astronomy & Astrophysics 612 2019-06-06
2018 Garatti, Alessio Caratti o
Supersize me! Jets from massive young stellar objects
published pages: , ISSN: , DOI:
Star Formation Newsletter 1 2019-06-06
2019 M. Koutoulaki, S. Facchini, C. F. Manara, A. Natta, R. Garcia Lopez, R. Fedriani, A. Caratti o Garatti, D. Coffey, T. P. Ray
Exploring the dimming event of RW Aurigae A through multi-epoch VLT/X-shooter spectroscopy
published pages: A49, ISSN: 0004-6361, DOI: 10.1051/0004-6361/201834713
Astronomy & Astrophysics 625 2019-06-06

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