Astronomische Nachrichten
Volume 333, Issue 8 pp. 754-766
Original Paper

The Dwarf project: Eclipsing binaries – precise clocks to discover exoplanets

T. Pribulla, 

Corresponding Author

T. Pribulla

Astronomical Institute, Slovak Academy of Sciences, 059 60 Tatranská Lomnica, Slovakia

Astronomical Institute, Slovak Academy of Sciences, 059 60 Tatranská Lomnica, SlovakiaSearch for more papers by this author
M. Vaňko, 

M. Vaňko

Astronomical Institute, Slovak Academy of Sciences, 059 60 Tatranská Lomnica, Slovakia

Search for more papers by this author
M. Ammler-von Eiff, 

M. Ammler-von Eiff

Thüringer Landessternwarte Tautenburg, Sternwarte 5, 07778 Tautenburg, Germany

Search for more papers by this author
M. Andreev, 

M. Andreev

Terskol Branch of INASAN RAS, 81 Elbrus ave., ap. 33, Tyrnyauz, Kabardino-Balkaria Republic, 361623 Russia

Internat. Centre for Astronomical, Medical and Ecological Res., National Acad. of Sci. of Ukraine, 27 Akademika Zabolotnoho St, 03680 Kyiv, Ukraine

Search for more papers by this author
A. Aslantürk, 

A. Aslantürk

University Ondokuz Mayıs, Faculty of Dept. of Physics, 55139 Kurupelit-Samsun, Turkey

Search for more papers by this author
N. Awadalla, 

N. Awadalla

National Research Institute of Astronomy, and Geophysics, Helwan, Cairo, Egypt

Search for more papers by this author
D. Baluďansky, 

D. Baluďansky

Roztoky observatory, Slovakia

Search for more papers by this author
A. Bonanno, 

A. Bonanno

INAF, Observatorio Astrofisico di Catania, via S. Sofia, 78, 95123 Catania, Italy

Search for more papers by this author
H. Božić, 

H. Božić

Hvar Osservatory, Faculty of Geodesy, University of Zagreb, 10000 Zagreb, Croatia

Search for more papers by this author
G. Catanzaro, 

G. Catanzaro

INAF, Observatorio Astrofisico di Catania, via S. Sofia, 78, 95123 Catania, Italy

Search for more papers by this author
L. Çelik, 

L. Çelik

University of Ankara, Faculty of Science, Dept. of Astronomy and Space Sciences, 06100 Tandogan-Ankara, Turkey

Institute of Theoretical and Applied Physics (ITAP) 48740 Turunç, Muğla, Turkey

Search for more papers by this author
P.E. Christopoulou, 

P.E. Christopoulou

Astronomical Laboratory, Dept. of Physics, University of Patras, 26500 Rio-Patras, Greece

Search for more papers by this author
E. Covino, 

E. Covino

INAF, Osservatorio Astronomico di Capodimonte, via Moiariello 16, 80131 Napoli, Italy

Search for more papers by this author
F. Cusano, 

F. Cusano

Osservatorio Astronomico di Bologna, Via Ranzani 1, 40127 Bologna, Italy

Search for more papers by this author
D. Dimitrov, 

D. Dimitrov

Institute of Astronomy and National Astronomical Observatory, Bulgarian Academy

Search for more papers by this author
P. Dubovský, 

P. Dubovský

Vihorlat Observatory, Mierova 4, 066 01 Humenné, Slovakia of Sciences, 72 Tsarigradsko Shosse Blvd., 1784 Sofia, Bulgaria

Search for more papers by this author
P. Eigmueller, 

P. Eigmueller

Thüringer Landessternwarte Tautenburg, Sternwarte 5, 07778 Tautenburg, Germany

Search for more papers by this author
E.M. Esmer, 

E.M. Esmer

University of Ankara, Faculty of Science, Dept. of Astronomy and Space Sciences, 06100 Tandogan-Ankara, Turkey

Institute of Theoretical and Applied Physics (ITAP) 48740 Turunç, Muğla, Turkey

Search for more papers by this author
A. Frasca, 

A. Frasca

INAF, Observatorio Astrofisico di Catania, via S. Sofia, 78, 95123 Catania, Italy

Search for more papers by this author
Ľ. Hambálek, 

Ľ. Hambálek

Astronomical Institute, Slovak Academy of Sciences, 059 60 Tatranská Lomnica, Slovakia

Search for more papers by this author
M. Hanna, 

M. Hanna

National Research Institute of Astronomy, and Geophysics, Helwan, Cairo, Egypt

Search for more papers by this author
A. Hanslmeier, 

A. Hanslmeier

Institut f¨︁ur Physik, IGAM, Karl-Franzens Universität Graz, Universitätsplatz 5, 8010 Graz, Austria

Search for more papers by this author
B. Kalomeni, 

B. Kalomeni

Dept. of Astronomy and Space Sciences, University of Ege, 35100 Bornova, Izmir, Turkey

Search for more papers by this author
D.P. Kjurkchieva, 

D.P. Kjurkchieva

Dept. of Physics, Shumen University, 9700 Shumen, Bulgaria

Search for more papers by this author
V. Krushevska, 

V. Krushevska

Main Astronomical Observatory of National Academy of Sciences of Ukraine, 27 Akademika Zabolotnoho St, 03680 Kyiv, Ukraine

Search for more papers by this author
I. Kudzej, 

I. Kudzej

Vihorlat Observatory, Mierova 4, 066 01 Humenné, Slovakia of Sciences, 72 Tsarigradsko Shosse Blvd., 1784 Sofia, Bulgaria

Search for more papers by this author
E. Kundra, 

E. Kundra

Astronomical Institute, Slovak Academy of Sciences, 059 60 Tatranská Lomnica, Slovakia

Search for more papers by this author
Yu. Kuznyetsova, 

Yu. Kuznyetsova

Main Astronomical Observatory of National Academy of Sciences of Ukraine, 27 Akademika Zabolotnoho St, 03680 Kyiv, Ukraine

Search for more papers by this author
J.W. Lee, 

J.W. Lee

Korea Astronomy and Space Science Institute (KASI), 776 Daedeokdae-ro, Yuseong-gu, Daejeon 305-348, Korea

Search for more papers by this author
M. Leitzinger, 

M. Leitzinger

Institut f¨︁ur Physik, IGAM, Karl-Franzens Universität Graz, Universitätsplatz 5, 8010 Graz, Austria

Search for more papers by this author
G. Maciejewski, 

G. Maciejewski

Toruń Centre for Astronomy, N. Copernicus University, Gagarina 11, 87100, Toruń, Poland

Search for more papers by this author
D. Moldovan, 

D. Moldovan

Astronomical Institute of the Romanian Academy, Astronomical Observatory Cluj-Napoca, Str. Ciresilor 19, 400487 Cluj-Napoca, Romania

Search for more papers by this author
M.H.M. Morais, 

M.H.M. Morais

Department of Physics & I3N, University of Aveiro, Campus Universit´ario de Santiago, 3810-193 Aveiro, Portugal

Search for more papers by this author
M. Mugrauer, 

M. Mugrauer

Astrophysikalisches Institut und Universitäts-Sternwarte Jena, Schillergäßchen 2, 07745 Jena, Germany

Search for more papers by this author
R. Neuhäuser, 

R. Neuhäuser

Astrophysikalisches Institut und Universitäts-Sternwarte Jena, Schillergäßchen 2, 07745 Jena, Germany

Search for more papers by this author
A. Niedzielski, 

A. Niedzielski

Toruń Centre for Astronomy, N. Copernicus University, Gagarina 11, 87100, Toruń, Poland

Search for more papers by this author
P. Odert, 

P. Odert

Institut f¨︁ur Physik, IGAM, Karl-Franzens Universität Graz, Universitätsplatz 5, 8010 Graz, Austria

Search for more papers by this author
J. Ohlert, 

J. Ohlert

University of Applied Sciences, Wilhelm-Leuschner-Straße 13, 61169 Friedberg, Germany

Michael Adrian Observatory, Astronomie Stiftung Trebur, Fichtenstraße 7, 65468 Trebur, Germany

Search for more papers by this author
İ. Özavcı, 

İ. Özavcı

University of Ankara, Faculty of Science, Dept. of Astronomy and Space Sciences, 06100 Tandogan-Ankara, Turkey

Institute of Theoretical and Applied Physics (ITAP) 48740 Turunç, Muğla, Turkey

Search for more papers by this author
A. Papageorgiou, 

A. Papageorgiou

Astronomical Laboratory, Dept. of Physics, University of Patras, 26500 Rio-Patras, Greece

Search for more papers by this author
Š. Parimucha, 

Š. Parimucha

Institute of Physics, Faculty of Natural Sciences, Šafárik University, Košice, Slovakia

Search for more papers by this author
S. Poddaný, 

S. Poddaný

Astronomical Institute, Faculty of Mathematics and Physics, Charles University Prague, V Holešoviˇkách 2, 180 00 Prague 8, Czech Republic

Štefánik Observatory, Strahovská 205, Prague, Czech Republic

Search for more papers by this author
A. Pop, 

A. Pop

Astronomical Institute of the Romanian Academy, Astronomical Observatory Cluj-Napoca, Str. Ciresilor 19, 400487 Cluj-Napoca, Romania

Search for more papers by this author
M. Raetz, 

M. Raetz

Private observatory, Stiller Berg 6, 98587 Herges-Hallenberg, Germany

Search for more papers by this author
S. Raetz, 

S. Raetz

Astrophysikalisches Institut und Universitäts-Sternwarte Jena, Schillergäßchen 2, 07745 Jena, Germany

Search for more papers by this author
Ya. Romanyuk, 

Ya. Romanyuk

Internat. Centre for Astronomical, Medical and Ecological Res., National Acad. of Sci. of Ukraine, 27 Akademika Zabolotnoho St, 03680 Kyiv, Ukraine

Search for more papers by this author
D. Ruždjak, 

D. Ruždjak

Hvar Osservatory, Faculty of Geodesy, University of Zagreb, 10000 Zagreb, Croatia

Search for more papers by this author
J. Schulz, 

J. Schulz

Volkssternwarte Kirchheim Arnstädter Straße 49, 99334 Kirchheim, Germany

Search for more papers by this author
H.V. Şenavcı, 

H.V. Şenavcı

University of Ankara, Faculty of Science, Dept. of Astronomy and Space Sciences, 06100 Tandogan-Ankara, Turkey

Institute of Theoretical and Applied Physics (ITAP) 48740 Turunç, Muğla, Turkey

Search for more papers by this author
G. Srdoc, 

G. Srdoc

Private observatory, Sarsoni 90, 51216 Viskovo, Croatia

Search for more papers by this author
T. Szalai, 

T. Szalai

Dept. of Optics and Quantum Electronics, University of Szeged, Dóm tér 9, 6720 Szeged, Hungary

Search for more papers by this author
P. Székely, 

P. Székely

Dept. of Experimental Physics, University of Szeged, Hungary

Search for more papers by this author
D. Sudar, 

D. Sudar

Hvar Osservatory, Faculty of Geodesy, University of Zagreb, 10000 Zagreb, Croatia

Search for more papers by this author
C.T. Tezcan, 

C.T. Tezcan

University of Ankara, Faculty of Science, Dept. of Astronomy and Space Sciences, 06100 Tandogan-Ankara, Turkey

Institute of Theoretical and Applied Physics (ITAP) 48740 Turunç, Muğla, Turkey

Search for more papers by this author
M.E. Törün, 

M.E. Törün

University of Ankara, Faculty of Science, Dept. of Astronomy and Space Sciences, 06100 Tandogan-Ankara, Turkey

Institute of Theoretical and Applied Physics (ITAP) 48740 Turunç, Muğla, Turkey

Search for more papers by this author
V. Turcu, 

V. Turcu

Astronomical Institute of the Romanian Academy, Astronomical Observatory Cluj-Napoca, Str. Ciresilor 19, 400487 Cluj-Napoca, Romania

Search for more papers by this author
O. Vince, 

O. Vince

Astronomical Observatory, Volgina 7, 11060 Belgrade, Serbia

Search for more papers by this author
M. Zejda, 

M. Zejda

Dept. of Theoretical Physics and Astrophysics, Masaryk University, Kotlářská 2, 611 37, Brno, Czech Republic

Search for more papers by this author
First published: 04 October 2012
https://doi.org/10.1002/asna.201211722
Citations: 41

Abstract

We present a new observational campaign, Dwarf, aimed at detection of circumbinary extrasolar planets using the timing of the minima of low-mass eclipsing binaries. The observations will be performed within an extensive network of relatively small to medium-size telescopes with apertures of ∼20-200 cm. The starting sample of the objects to be monitored contains (i) low-mass eclipsing binaries with M and K components, (ii) short-period binaries with a sdB or sdO component, and (iii) post-common-envelope systems containing a WD, which enable to determine minima with high precision. Since the amplitude of the timing signal increases with the orbital period of an invisible third component, the timescale of the project is long, at least 5-10 years. The paper gives simple formulas to estimate the suitability of individual eclipsing binaries for the circumbinary planet detection. Intrinsic variability of the binaries (photospheric spots, flares, pulsation etc.) limiting the accuracy of the minima timing is also discussed. The manuscript also describes the best observing strategy and methods to detect cyclic timing variability in the minima times indicating the presence of circumbinary planets. First test observations of the selected targets are presented (© 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.