Bibcode
Errmann, R.; Torres, G.; Schmidt, T. O. B.; Seeliger, M.; Howard, A. W.; Maciejewski, G.; Neuhäuser, R.; Meibom, S.; Kellerer, A.; Dimitrov, D. P.; Dincel, B.; Marka, C.; Mugrauer, M.; Ginski, Ch.; Adam, Ch.; Raetz, St.; Schmidt, J. G.; Hohle, M. M.; Berndt, A.; Kitze, M.; Trepl, L.; Moualla, M.; Eisenbeiß, T.; Fiedler, S.; Dathe, A.; Graefe, Ch.; Pawellek, N.; Schreyer, K.; Kjurkchieva, D. P.; Radeva, V. S.; Yotov, V.; Chen, W. P.; Hu, S. C.-L.; Wu, Z.-Y.; Zhou, X.; Pribulla, T.; Budaj, J.; Vaňko, M.; Kundra, E.; Hambálek, Ľ.; Krushevska, V.; Bukowiecki, Ł.; Nowak, G.; Marschall, L.; Terada, H.; Tomono, D.; Fernandez, M.; Sota, A.; Takahashi, H.; Oasa, Y.; Briceño, C.; Chini, R.; Broeg, C. H.
Bibliographical reference
Astronomische Nachrichten, Vol.335, Issue 4, p.345
Advertised on:
2014
Citations
13
Refereed citations
9
Description
We report our investigation of the first transiting planet candidate
from the YETI project in the young (˜4 Myr old) open cluster
Trumpler 37. The transit-like signal detected in the lightcurve of F8V
star 2M21385603+5711345 repeats every 1.364894±0.000015 days, and
has a depth of 54.5±0.8 mmag in R. Membership in the cluster is
supported by its mean radial velocity and location in the
color-magnitude diagram, while the Li diagnostic and proper motion are
inconclusive in this regard. Follow-up photometric monitoring and
adaptive optics imaging allow us to rule out many possible blend
scenarios, but our radial-velocity measurements show it to be an
eclipsing single-lined spectroscopic binary with a late-type (mid-M)
stellar companion, rather than one of planetary nature. The estimated
mass of the companion is 0.15-0.44 M⊙. The search for
planets around very young stars such as those targeted by the YETI
survey remains of critical importance to understand the early stages of
planet formation and evolution.
Based in part on data collected at Subaru Telescope, which is operated
by the National Astronomical Observatory of Japan. Some of the data
presented herein were obtained at the W.M. Keck Observatory, which is
operated as a scientific partnership among the California Institute of
Technology, the University of California and the National Aeronautics
and Space Administration (Proposal ID H215Hr). The Observatory was made
possible by the generous financial support of the W.M. Keck Foundation.
Based on observations obtained with telescopes of the University
Observatory Jena, which is operated by the Astrophysical Institute of
the Friedrich-Schiller-University. Based on observations collected at
the Centro Astronómico Hispano Alemán (CAHA) at Calar
Alto, operated jointly by the Max-Planck Institut für Astronomie
and the Instituto de Astrofísica de Andalucía (CSIC,
Proposal IDs H10-3.5-015 and H10-2.2-004). Some of the observations
reported here were obtained at the MMT Observatory, a joint facility of
the Smithsonian Institution and the University of Arizona (Proposal ID
2010c-SAO-5).
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Exoplanets and Astrobiology
The search for life in the universe has been driven by recent discoveries of planets around other stars (known as exoplanets), becoming one of the most active fields in modern astrophysics. The growing number of new exoplanets discovered in recent years and the recent advance on the study of their atmospheres are not only providing new valuable
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