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LONGEARD , Nicolas

Last name: LONGEARD

First name: Nicolas

May 2015 (v1)

Publication

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Post-adaptive optics bispectral speckle imaging

Longeard, Nicolas Aristidi, Eric Carbillet, Marcel

International audience

Uploaded on: December 4, 2022
2024 (v1)

Journal article

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Gaia's brightest very metal-poor (VMP) stars. Metallicity catalogue of a thousand VMP stars from Gaia's radial velocity spectrometer spectra

Viswanathan, Akshara Starkenburg, Else Matsuno, Tadafumi

Context. Gaia DR3 has offered the scientific community a remarkable dataset of approximately one million spectra acquired with the radial velocity spectrometer (RVS) in the calcium II triplet region, which is well suited to identify very metal-poor (VMP) stars. However, over 40% of these spectra have no released parameters by Gaia's GSP-Spec...

Uploaded on: April 5, 2025
October 21, 2018 (v1)

Journal article

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Pristine dwarf galaxy survey – I. A detailed photometric and spectroscopic study of the very metal-poor Draco II satellite

Longeard, Nicolas Martin, Nicolas Starkenburg, Else

We present a detailed study of the faint Milky Way satellite Draco II (Dra II) from deep CFHT/MegaCam broad-band g and i photometry and narrow-band metallicity-sensitive CaHK observations, along with follow-up Keck II/DEIMOS multi-object spectroscopy. Forward modelling of the deep photometry allows us to refine the structural and photometric...

Uploaded on: December 4, 2022