TY - JOUR
T1 - Variable stars in two open clusters within the Kepler/K2-Campaign-0 field
T2 - M35 and NGC 2158
AU - Nardiello, D.
AU - Bedin, L. R.
AU - Nascimbeni, V.
AU - Libralato, M.
AU - Cunial, A.
AU - Piotto, G.
AU - Bellini, A.
AU - Borsato, L.
AU - Brogaard, K.
AU - Granata, V.
AU - Malavolta, L.
AU - Marino, A. F.
AU - Milone, A. P.
AU - Ochner, P.
AU - Ortolani, S.
AU - Tomasella, L.
AU - Clemens, M.
AU - Salaris, M.
N1 - Publisher Copyright:
© 2015 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society.
PY - 2015/3/11
Y1 - 2015/3/11
N2 - We present a multiyear survey aimed at collecting (1) high-precision (~5 milli-mag), (2) fastcadence (~3 min), and (3) relatively long duration (~10 d) multiband photometric series. The goal of the survey is to discover and characterize efficiently variable objects and exoplanetary transits in four fields containing five nearby open clusters spanning a broad range of ages. More in detail, our project will (1) constitute a preparatory survey for the High Accuracy Radial velocity Planet Searcher for the Northern hemisphere (HARPS-N) mounted at the Telescopio Nazionale Galileo (TNG), which will be used for spectroscopic follow-up of any target of interest that this survey discovers or characterizes, (2) measure rotational periods and estimate the activity level of targets we are already monitoring with HARPS and HARPS-N for exoplanet transit search, and (3) long-term characterization of selected targets of interest in open clusters within the planned K2 fields. In this first paper, we give an overview of the project, and report on the variability of objects within the first of our selected fields, which contains two open clusters: M35 and NGC 2158. We detect 519 variable objects, 273 of which are new discoveries, while the periods of most of the previously known variables are considerably improved.
AB - We present a multiyear survey aimed at collecting (1) high-precision (~5 milli-mag), (2) fastcadence (~3 min), and (3) relatively long duration (~10 d) multiband photometric series. The goal of the survey is to discover and characterize efficiently variable objects and exoplanetary transits in four fields containing five nearby open clusters spanning a broad range of ages. More in detail, our project will (1) constitute a preparatory survey for the High Accuracy Radial velocity Planet Searcher for the Northern hemisphere (HARPS-N) mounted at the Telescopio Nazionale Galileo (TNG), which will be used for spectroscopic follow-up of any target of interest that this survey discovers or characterizes, (2) measure rotational periods and estimate the activity level of targets we are already monitoring with HARPS and HARPS-N for exoplanet transit search, and (3) long-term characterization of selected targets of interest in open clusters within the planned K2 fields. In this first paper, we give an overview of the project, and report on the variability of objects within the first of our selected fields, which contains two open clusters: M35 and NGC 2158. We detect 519 variable objects, 273 of which are new discoveries, while the periods of most of the previously known variables are considerably improved.
KW - Binaries: general
KW - Open clusters and associations: individual: M35, NGC 2158
KW - Stars: distances
KW - Stars: variables: general
KW - Techniques: photometric
UR - http://www.scopus.com/inward/record.url?scp=85015646467&partnerID=8YFLogxK
U2 - 10.1093/mnras/stu2697
DO - 10.1093/mnras/stu2697
M3 - Article
SN - 0035-8711
VL - 447
SP - 3536
EP - 3547
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 4
ER -