@article{8e3d9f7441aa4bda9d43ff25a05339a4,
title = "Towards constraints on massive galactic stars using VLT/SPHERE with high-contrast imaging",
abstract = "While the formation of massive stars remains heavily debated, it is nowadays clear that the formation scenarios need to account for the high-degree of multiplicity of these objects that has been observed by recent studies. Here we introduce the Carina High-contrast Imaging Project for massive Stars (CHIPS) that aims to obtain coronagraphic observations of massive stars in the Carina region using VLT/SPHERE. We illustrate the capabilities of SPHERE for massive stars by focusing on the QZ Car system. We detect 19 sources, most of them for the first time, within a 7x700field of view. We show that contrast better than 9 mag can be achieved at separation larger than 200 mas. We also investigate avenues to obtain a first characterisation of the detected sources by fitting their source energy distribution with pre-main sequence stellar atmosphere models.",
keywords = "Binaries: close, Binaries: visual, High-contrast imaging, Stars: early-type, Stars: individual: QZ Car, Stars: massive, Stars: multiplicity, Techniques: high angular resolution Massive Stars: formation",
author = "A. Rainot and M. Reggiani and H. Sana and Gomez-Gonzalez, {C. A.} and O. Absil and V. Christiaens and P. Delorme and L. Almeida and S. Caballero-Nieves and {de Ridder}, J. and K. Kratter and S. Lacour and {Le Bouquin}, {J. B.} and L. Pueyo and H. Zinnecker",
note = "Funding Information: We acknowledge the support from the FWO-Odysseus program under project G0F8H6N. This project has further received funding from the European Research Council under European Union{\textquoteright}s Horizon 2020 research programme (grant agreement No 772225-COG MULTIPLES). This work is based on observations collected at the European Southern Observatory under programs ID 096.C-0510(A). We thank the SPHERE Data Centre, jointly operated by OSUG/IPAG (Grenoble), PYTHEAS/LAM/CeSAM (Marseille), OCA/Lagrange (Nice) and Observatoire de Paris/LESIA (Paris) and supported by a grant from Labex OSUG@2020 (Investissements davenir ANR10 LABX56). We especially thank P. Delorme and E. Lagadec (SPHERE Data Centre) for their help during the data reduction process. JDR acknowledges the BELgian federal Science Policy Office (BELSPO) through PRODEX grants Gaia and PLATO. Funding Information: Acknowledgements. We acknowledge the support from the FWO-Odysseus program under project G0F8H6N. This project has further received funding from the European Research Council under European Union{\textquoteright}s Horizon 2020 research programme (grant agreement No 772225-COG MULTIPLES). This work is based on observations collected at the European Southern Observatory under programs ID 096.C-0510(A). We thank the SPHERE Data Centre, jointly operated by OSUG/IPAG (Grenoble), PYTHEAS/LAM/CeSAM (Marseille), OCA/Lagrange (Nice) and Observatoire de Paris/LESIA (Paris) and supported by a grant from Labex OSUG@2020 (Investissements davenir ANR10 LABX56). We especially thank P. Delorme and E. Lagadec (SPHERE Data Centre) for their help during the data reduction process. JDR acknowledges the BELgian federal Science Policy Office (BELSPO) through PRODEX grants Gaia and PLATO. Publisher Copyright: {\textcopyright} SAIt 2019; EWASS 2019: Special Session 22 Stellar Multiplicity in the Gaia Era: Where do we Stand? ; Conference date: 25-06-2019",
year = "2019",
language = "English (US)",
volume = "90",
pages = "366--373",
journal = "Memorie della Societa Astronomica Italiana - Journal of the Italian Astronomical Society",
issn = "1824-016X",
publisher = "Societa Astronomica Italiana",
number = "3",
}