TY  - JOUR
A1  - Campos, Fabiola
A1  - Pelisoli, Ingrid Domingos
A1  - Kamann, Sebastian
A1  - Husser, T. -O.
A1  - Dreizler, S.
A1  - Bellini, A.
A1  - Robinson, E. L.
A1  - Nardiello, Domenico
A1  - Piotto, G.
A1  - Kepler, S. O.
A1  - Istrate, A. G.
A1  - Winget, D. E.
A1  - Montgomery, M. H.
A1  - Dotter, A.
T1  - Outliers
BT  - multicolour photometry guiding the search for evolved binary systems in the globular cluster 47 Tucanae
JF  - Monthly notices of the Royal Astronomical Society
N2  - We use Hubble Space Telescope multicolour photometry of the globular cluster 47 Tucanae to uncover a population of 24 objects with no previous classification that are outliers from the single-star model tracks in the colour-magnitude diagram and yet are likely cluster members. By comparing those sources with evolutionary models and X-ray source catalogues, we were able to show that the majority of those sources are likely binary systems that do not have any X-ray source detected nearby, most possibly formed by a white dwarf and a main-sequence star and a small number of possible double-degenerate systems.
KW  - binaries: general
KW  - Hertzsprung-Russell and colour-magnitude diagrams
KW  - white dwarfs
KW  - globular clusters: individual: 47 Tuc
Y1  - 2018
U6  - https://doi.org/10.1093/mnras/sty2591
SN  - 0035-8711
SN  - 1365-2966
VL  - 481
IS  - 4
SP  - 4397
EP  - 4409
PB  - Oxford Univ. Press
CY  - Oxford
ER  - 
TY  - JOUR
A1  - Griggio, Massimo
A1  - Bedin, Luigi R.
A1  - Raddi, Roberto
A1  - Reindl, Nicole
A1  - Tomasella, Lina
A1  - Scalco, M.
A1  - Salaris, M.
A1  - Cassisi, S.
A1  - Ochner, P.
A1  - Ciroi, S.
A1  - Rosati, P.
A1  - Nardiello, Domenico
A1  - Anderson, J.
A1  - Libralato, Mattia
A1  - Bellini, A.
A1  - Vallenari, A.
A1  - Spina, L.
A1  - Pedani, M.
T1  - Astro-photometric study of M37 with Gaia and wide-field ugi-imaging
JF  - Monthly notices of the Royal Astronomical Society
N2  - 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 characterization 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.
KW  - catalogues
KW  - white dwarfs
KW  - open clusters and associations: individual:
KW  - M37 (NGC2099)
Y1  - 2022
U6  - https://doi.org/10.1093/mnras/stac1920
SN  - 0035-8711
SN  - 1365-2966
VL  - 515
IS  - 2
SP  - 1841
EP  - 1853
PB  - Oxford University Press
CY  - Oxford
ER  -