Astro-photometric study of M37 with <i>Gaia</i> and wide-field <i>ugi</i>

Astro-photometric study of M37 with Gaia and wide-field ugi–imaging

Published:2022-07-11 Issue: Volume: Page:
ISSN:0035-8711
Container-title:Monthly Notices of the Royal Astronomical Society
language:en
Short-container-title:

Author:

Griggio M¹²,Bedin L R²^ORCID,Raddi R³^ORCID,Reindl N⁴,Tomasella L²^ORCID,Scalco M¹²,Salaris M⁵⁶,Cassisi S⁶,Ochner P²⁷,Ciroi S⁷,Rosati P¹,Nardiello D²^ORCID,Anderson J⁸,Libralato M⁹^ORCID,Bellini A⁸,Vallenari A²,Spina L²,Pedani M¹⁰

Affiliation:

1. Dipartimento di Fisica, Università di Ferrara , Via Giuseppe Saragat 1, Ferrara I-44122, Italy

2. INAF - Osservatorio Astronomico di Padova , Vicolo dell’Osservatorio 5, Padova I-35122, Italy

3. Universitat Politècnica de Catalunya, Departament de Física , c/ Esteve Terrades 5, 08860, Castelldefels, Spain

4. Institut für Physik und Astronomie , Universität Potsdam, Karl-Liebknecht-Straße 24/25, 14476, Potsdam, Germany

5. Astrophysics Research Institute, Liverpool John Moores University , 146 Brownlow Hill, Liverpool L3 5RF, UK

6. INAF - Osservatorio Astronomico di Abruzzo , Via M. Maggini, I-64100 Teramo, Italy

7. Department of Physics and Astronomy, University of Padova , Via F. Marzolo 8, I-35131 Padova, Italy

8. Space Telescope Science Institute , 3700 San Martin Drive, Baltimore, MD 21218, USA

9. AURA for the European Space Agency (ESA) , Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA

10. Fundación Galileo Galilei - INAF , Rambla José Ana Fernandez Pérez 7, E-38712 Breña Baja (TF), Spain

Abstract

Abstract We present an astrometric and photometric wide-field study of the Galactic open star cluster M37 (NGC 2099). The studied field was observed with ground-based images covering a region of about four square degrees in the Sloan-like filters ugi. We exploited the Gaia catalogue to calibrate the geometric distortion of the large field mosaics, developing software routines that can be also applied to other wide-field instruments. The data are used to identify the hottest white dwarf (WD) member candidates of M37. Thanks to the Gaia EDR3 exquisite astrometry we identified seven such WD candidates, one of which, besides being a high-probability astrometric member, is the putative central star of a planetary nebula. To our knowledge, this is a unique object in an open cluster, and we have obtained follow-up low-resolution spectra that are used for a qualitative characterisation of this young WD. Finally, we publicly release a three-colour atlas and a catalogue of the sources in the field of view, which represents a complement of existing material.

Publisher

Oxford University Press (OUP)

Subject

Space and Planetary Science,Astronomy and Astrophysics

Link

https://academic.oup.com/mnras/advance-article-pdf/doi/10.1093/mnras/stac1920/44819788/stac1920.pdf

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