GIARPS/GRAVITY Survey: Broad-Band 0.44–2.4 Micron High-Resolution Spectra of T-Tauri and Herbig AeBe Stars – Combining High Spatial and High Spectral Resolution Data to Unveil the Inner Disc Physics

Conference paper
Part of the Astrophysics and Space Science Proceedings book series (ASSSP, volume 55)


The GIARPS/GRAVITY survey aims to obtain a set of high spatial and spectral resolution data for a sample of T-Tauri and Herbig AeBe stars (∼100 objects) selected from the VLTI/GRAVITY GTO sample of Young Stellar Objects (YSOs). GIARPS is a broad-band spectrometer combining HARPS-N and GIANO which allows high-resolution spectra from 0.44 μm (R ∼ 115, 000) to 2.44 μm (R ∼ 50, 000) in one observation. By combining this high spectral resolution with the high spatial resolution (∼1 mas) of GRAVITY, a view of unprecedented detail can be obtained of the innermost regions of circumstellar discs in YSOs spanning a wide range of masses (0.1–5 M) and ages (105–107 yr). The ultimate goal is to model the accretion and ejection mechanisms, and study how they evolve as a function of YSO mass and age, using the spatially and spectrally resolved atomic and molecular lines from the inner gaseous regions.



Based on observations made with the Italian Telescopio Nazionale Galileo (TNG) operated on the island of La Palma by the Fundación Galileo Galilei of the INAF (Istituto Nazionale di Astrofisica) at the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofisica de Canarias.


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© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.INAF-Osservatorio Astrofisico di ArcetriFirenzeItaly
  2. 2.Astronomy & Astrophysics SectionDublin Institute for Advanced StudiesDublin 2Ireland
  3. 3.Université Grenoble Alpes, CNRS, IPAGGrenobleFrance
  4. 4.Italian ARCINAF-IRABolognaItaly
  5. 5.Max Planck Institute für AstronomyHeidelbergGermany
  6. 6.INAF-Osservatorio Astronomico di CagliariSelargius (CA)Italy
  7. 7.School of PhysicsUniversity College DublinBelfield, Dublin 4Ireland
  8. 8.I. Physikalisches InstitutUniversität zu KölnKölnGermany
  9. 9.INAF – Fundación Galileo GalileiBreña BajaSpain
  10. 10.Max-Planck-Institut für RadioastronomieBonnGermany

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