Euclid: High-precision imaging astrometry and photometry from Early Release Observations I. Internal kinematics of NGC 6397 by combining Euclid and Gaia data

被引：0

作者：

Libralato, M. ^{[1
]}

Bedin, L.R. ^{[1
]}

Griggio, M. ^{[1
,2
]}

Massari, D. ^{[3
]}

Anderson, J. ^{[2
]}

Cuillandre, J.-C. ^{[4
]}

Ferguson, A.M.N. ^{[5
]}

Lançon, A. ^{[6
]}

Larsen, S.S. ^{[7
]}

Schirmer, M. ^{[8
]}

Annibali, F. ^{[3
]}

Balbinot, E. ^{[9
,10
]}

Dalessandro, E. ^{[3
]}

Erkal, D. ^{[11
]}

Kuzma, P.B. ^{[5
,12
]}

Saifollahi, T. ^{[6
]}

Verdoes Kleijn, G. ^{[9
]}

Kümmel, M. ^{[13
]}

Nakajima, R. ^{[14
]}

Correnti, M. ^{[15
,16
]}

Battaglia, G. ^{[17
]}

Altieri, B. ^{[18
]}

Amara, A. ^{[11
]}

Andreon, S. ^{[19
]}

Baccigalupi, C. ^{[20
,21
,22
,23
]}

Baldi, M. ^{[3
,24
,25
]}

Balestra, A. ^{[1
]}

Bardelli, S. ^{[3
]}

Basset, A. ^{[26
]}

Battaglia, P. ^{[3
]}

Bonino, D. ^{[27
]}

Branchini, E. ^{[19
,28
,29
]}

Brescia, M. ^{[30
,31
,32
]}

Brinchmann, J. ^{[33
,34
]}

Caillat, A. ^{[35
]}

Camera, S. ^{[27
,36
,37
]}

Capobianco, V. ^{[27
]}

Carbone, C. ^{[38
]}

Carretero, J. ^{[39
,40
]}

Casas, S. ^{[41
,42
]}

Castellano, M. ^{[15
]}

Castignani, G. ^{[3
]}

Cavuoti, S. ^{[31
,32
]}

Cimatti, A. ^{[43
]}

Colodro-Conde, C. ^{[44
]}

Congedo, G. ^{[5
]}

Conselice, C.J. ^{[45
]}

Conversi, L. ^{[18
,46
]}

Copin, Y. ^{[47
]}

Courbin, F. ^{[48
,49
,50
]}

机构：

[1] INAF - Osservatorio Astronomico di Padova, Via dell’Osservatorio 5, Padova

[2] Space Telescope Science Institute, 3700 San Martin Dr, Baltimore, 21218, MD

[3] INAF-Osservatorio di Astrofisica e Scienza dello Spazio di Bologna, Via Piero Gobetti 93/3, Bologna

[4] Université Paris-Saclay, Université Paris Cité, CEA, CNRS, AIM, Gif-sur-Yvette

[5] Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh

[6] Université de Strasbourg, CNRS, Observatoire astronomique de Strasbourg, UMR 7550, Strasbourg

[7] Department of Astrophysics, IMAPP, Radboud University, PO Box 9010, Nijmegen

[8] Max-Planck-Institut für Astronomie, Königstuhl 17, Heidelberg

[9] Kapteyn Astronomical Institute, University of Groningen, PO Box 800, Groningen

[10] Leiden Observatory, Leiden University, Einsteinweg 55, Leiden

[11] School of Mathematics and Physics, University of Surrey, Surrey, Guildford

[12] National Astronomical Observatory of Japan, 2-21-1 Osawa, Tokyo

[13] Universitäts-Sternwarte München, Fakultät für Physik, Ludwig-Maximilians-Universität München, Scheinerstrasse 1, München

[14] Universität Bonn, Argelander-Institut für Astronomie, Auf dem Hügel 71, Bonn

[15] INAF-Osservatorio Astronomico di Roma, Via Frascati 33, Monteporzio Catone

[16] Space Science Data Center, Italian Space Agency, via del Politecnico snc, Roma

[17] Instituto de Astrofísica de Canarias (IAC), Departamento de Astrofísica, Universidad de La Laguna (ULL), Tenerife, La Laguna

[18] ESAC/ESA, Camino Bajo del Castillo, s/n., Urb. Villafranca del Castillo, Villanueva de la Cañada, Madrid

[19] INAF-Osservatorio Astronomico di Brera, Via Brera 28, Milano

[20] IFPU, Institute for Fundamental Physics of the Universe, via Beirut 2, Trieste

[21] INAF - Osservatorio Astronomico di Trieste, Via G. B. Tiepolo 11, Trieste

[22] INFN, Sezione di Trieste, Via Valerio 2, Trieste

[23] SISSA, International School for Advanced Studies, Via Bonomea 265, TS, Trieste

[24] Dipartimento di Fisica e Astronomia, Università di Bologna, Via Gobetti 93/2, Bologna

[25] INFN - Sezione di Bologna, Viale Berti Pichat 6/2, Bologna

[26] Centre National d’Etudes Spatiales, Centre spatial de Toulouse, 18 avenue Edouard Belin, Toulouse

[27] INAF - Osservatorio Astrofisico di Torino, Via Osservatorio 20, TO, Pino Torinese

[28] Dipartimento di Fisica, Università di Genova, Via Dodecaneso 33, Genova

[29] INFN - Sezione di Genova, Via Dodecaneso 33, Genova

[30] Department of Physics “E. Pancini”, University Federico II, Via Cinthia 6, Napoli

[31] INAF-Osservatorio Astronomico di Capodimonte, Via Moiariello 16, Napoli

[32] INFN section of Naples, Via Cinthia 6, Napoli

[33] Instituto de Astrofísica e Ciências do Espaço, Universidade do Porto, CAUP, Rua das Estrelas, Porto

[34] Faculdade de Ciências, Universidade do Porto, Rua do Campo de Alegre, Porto

[35] Aix-Marseille Université, CNRS, CNES, LAM, Marseille

[36] Dipartimento di Fisica, Università degli Studi di Torino, Via P. Giuria 1, Torino

[37] INFN-Sezione di Torino, Via P. Giuria 1, Torino

[38] INAF-IASF Milano, Via Alfonso Corti 12, Milano

[39] Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Avenida Complutense 40, Madrid

[40] Port d’Informació Científica, Campus UAB, C. Albareda s/n, Bellaterra, Barcelona

[41] Institute for Theoretical Particle Physics and Cosmology (TTK), RWTH Aachen University, Aachen

[42] Institute of Cosmology and Gravitation, University of Portsmouth, Portsmouth

[43] Dipartimento di Fisica e Astronomia “Augusto Righi”, Alma Mater Studiorum Università di Bologna, Viale Berti Pichat 6/2, Bologna

[44] Instituto de Astrofísica de Canarias, Calle Vía Láctea s/n, Tenerife, San Cristóbal de La Laguna

[45] Jodrell Bank Centre for Astrophysics, Department of Physics and Astronomy, University of Manchester, Oxford Road, Manchester

[46] European Space Agency, ESRIN, Largo Galileo Galilei 1, Frascati, Roma

[47] Université Claude Bernard Lyon 1, CNRS, IN2P3, IP2I Lyon, UMR 5822, Villeurbanne

[48] Institute of Physics, Laboratory of Astrophysics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Observatoire de Sauverny, Versoix

[49] Institut de Ciències del Cosmos (ICCUB), Universitat de Barcelona (IEEC-UB), Martí i Franquès 1, Barcelona

[50] Institució Catalana de Recerca i Estudis Avançats (ICREA), Passeig de Lluís Companys 23, Barcelona

来源：

Astronomy and Astrophysics | 2024年 / 692卷

基金：

美国国家航空航天局;

关键词：

astrometry; globular clusters: individual: NGC6397; proper motions; techniques: photometric;

D O I：

10.1051/0004-6361/202452295

中图分类号：

学科分类号：

摘要：

The instruments at the focus of the Euclid space observatory offer superb, diffraction-limited imaging over an unprecedented (from space) wide field of view of 0.57 deg2. This exquisite image quality has the potential to produce high-precision astrometry for point sources once the undersampling of Euclid’s cameras is taken into account by means of accurate, effective point spread function (ePSF) modelling. We present a complex, detailed workflow to simultaneously solve for the geometric distortion (GD) and model the undersampled ePSFs of the Euclid detectors. Our procedure was successfully developed and tested with data from the Early Release Observations (ERO) programme focused on the nearby globular cluster NGC 6397. Our final one-dimensional astrometric precision for a well-measured star just below saturation is 0.7 mas (0.007 pixel) for the Visible Instrument (VIS) and 3 mas (0.01 pixel) for the Near-Infrared Spectrometer and Photometer (NISP). Finally, we present a specific scientific application of this high-precision astrometry: the combination of Euclid and Gaia data to compute proper motions and study the internal kinematics of NGC 6397. Future work, when more data become available, will allow for a better characterisation of the ePSFs and GD corrections that are derived here, along with assessment of their temporal stability, and their dependencies on the spectral energy distribution of the sources as seen through the wide-band filters of Euclid. © The Authors 2024.

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