Search Results - "Errmann, R"

Astrometric follow-up observations of directly imaged sub-stellar companions to young stars and brown dwarfs by Ginski, C., Schmidt, T. O. B., Mugrauer, M., Neuhäuser, R., Vogt, N., Errmann, R., Berndt, A.

“…The formation of massive planetary or brown dwarf companions at large projected separations from their host star is not yet well understood. In order to put…”
Get full text

A lucky imaging multiplicity study of exoplanet host stars – II by Ginski, C., Mugrauer, M., Seeliger, M., Buder, S., Errmann, R., Avenhaus, H., Mouillet, D., Maire, A.-L., Raetz, S.

“…The vast majority of extrasolar planets are detected by indirect detection methods such as transit monitoring and radial velocity measurements. While these…”
Get full text

A Small Actively Controlled High-resolution Spectrograph Based on Off-the-shelf Components by Jones, H. R. A., Martin, W. E., Anglada-Escudé, G., Errmann, R., Campbell, D. A., Baker, C., Boonsri, C., Choochalerm, P.

“…We present the design and testing of a prototype in-plane echelle spectrograph based on an actively controlled fiber-fed double-pass design. This system aims…”
Get full text

A broad-band scalar vortex coronagraph by Errmann, R., Minardi, S., Pertsch, T.

“…Broad-band coronagraphy with deep nulling and small inner working angle has the potential of delivering images and spectra of exoplanets and other faint…”
Get full text

Transit timing of TrES-2: a combined analysis of ground- and space-based photometry by Raetz, St, Maciejewski, G., Ginski, Ch, Mugrauer, M., Berndt, A., Eisenbeiss, T., Adam, Ch, Raetz, M., Roell, T., Seeliger, M., Marka, C., Vaňko, M., Bukowiecki, Ł., Errmann, R., Kitze, M., Ohlert, J., Pribulla, T., Schmidt, J. G., Sebastian, D., Puchalski, D., Tetzlaff, N., Hohle, M. M., Schmidt, T. O. B., Neuhäuser, R.

“…Homogeneous observations and careful analysis of transit light curves can lead to the identification of transit timing variations (TTVs). TrES-2 is one of few…”
Get full text

The EURONEAR Lightcurve Survey of Near Earth Asteroids by Vaduvescu, O., Macias, A. Aznar, Tudor, V., Predatu, M., Galád, A., Gajdoš, Š., Világi, J., Stevance, H. F., Errmann, R., Unda-Sanzana, E., Char, F., Peixinho, N., Popescu, M., Sonka, A., Cornea, R., Suciu, O., Toma, R., Santos-Sanz, P., Sota, A., Licandro, J., Serra-Ricart, M., Morate, D., Mocnik, T., Alfaro, M. Diaz, Lopez-Martinez, F., McCormac, J., Humphries, N.

“…This data paper presents lightcurves of 101 near Earth asteroids (NEAs) observed mostly between 2014 and 2017 as part of the EURONEAR photometric survey using…”
Get full text

Long-term photometry of IC 348 with the Young Exoplanet Transit Initiative network by Fritzewski, D J, Kitze, M, Mugrauer, M, Neuhaeuser, R, Adam, C, Briceno, C, Buder, S, Butterley, T, Chen, W-P, Dincel, B, Dhillon, V S, Errmann, R, Garai, Z, Gilbert, H FW, Ginski, C, Greif, J, Hardy, L K, Hernandez, J, Huang, P C, Kellerer, A, Kundra, E, Littlefair, S P, Mallonn, M, Marka, C, Pannicke, A, Pribulla, T, Raetz, St, Schmidt, J G, Schmidt, T OB, Seeliger, M, Wilson, R W, Wolf, V

“…We present long-term photometric observations of the young open cluster IC 348 with a baseline time-scale of 2.4 yr. Our study was conducted with several…”
Get full text

Transit timing analysis in the HAT-P-32 system by Seeliger, M., Dimitrov, D., Kjurkchieva, D., Mallonn, M., Fernandez, M., Kitze, M., Casanova, V., Maciejewski, G., Ohlert, J. M., Schmidt, J. G., Pannicke, A., Puchalski, D., Göğüş, E., Güver, T., Bilir, S., Ak, T., Hohle, M. M., Schmidt, T. O. B., Errmann, R., Jensen, E., Cohen, D., Marschall, L., Saral, G., Bernt, I., Derman, E., Gałan, C., Neuhäuser, R.

“…We present the results of 45 transit observations obtained for the transiting exoplanet HAT-P-32b. The transits have been observed using several telescopes…”
Get full text

Search for transiting exoplanets and variable stars in the open cluster NGC 7243 by Garai, Z., Pribulla, T., Hambálek, Ľ., Errmann, R., Adam, Ch, Buder, S., Butterley, T., Dhillon, V. S., Dincel, B., Gilbert, H., Ginski, Ch, Hardy, L. K., Kellerer, A., Kitze, M., Kundra, E., Littlefair, S. P., Mugrauer, M., Nedoroščík, J., Neuhäuser, R., Pannicke, A., Raetz, S., Schmidt, J. G., Schmidt, T. O. B., Seeliger, M., Vaňko, M., Wilson, R. W.

“…We report results of the first five observing campaigns for the open stellar cluster NGC 7243 in the frame of project Young Exoplanet Transit Initiative…”
Get full text

A POSSIBLE DETECTION OF OCCULTATION BY A PROTO-PLANETARY CLUMP IN GM Cephei by Chen, W P, Hu, S C-L, ERRMANN, R, Adam, Ch, Baar, S, Berndt, A, Bukowiecki, L, Dimitrov, D P, Eisenbeiss, T, Fiedler, S

“…GM Cephei (GM Cep), in the young (~4 Myr) open cluster Trumpler 37, has been known to be an abrupt variable and to have a circumstellar disk with a very active…”
Get full text

The stellar content of the young open cluster Trumpler 37 by Errmann, R., Neuhäuser, R., Marschall, L., Torres, G., Mugrauer, M., Chen, W.P., Hu, S.C.-L., Briceno, C., Chini, R., Bukowiecki, Ł., Dimitrov, D.P., Kjurkchieva, D., Jensen, E.L.N., Cohen, D.H., Wu, Z.-Y., Pribulla, T., Vaňko, M., Krushevska, V., Budaj, J., Oasa, Y., Pandey, A.K., Fernandez, M., Kellerer, A., Marka, C.

“…With an apparent cluster diameter of 1.5° and an age of 4 Myr, Trumpler 37 is an ideal target for photometric monitoring of young stars as well as for the…”
Get full text

A search for transit timing variation by Maciejewski, G., Neuhäuser, R., Raetz, St, Errmann, R., Kramm, U., Schmidt, T.O.B.

“…Photometric follow-ups of transiting exoplanets (TEPs) may lead to discoveries of additional, less massive bodies in extrasolar systems. This is possible by…”
Get full text

A new flare star member candidate in the Pleiades cluster by Moualla, M., Schmidt, T.O.B., Neuhäuser, R., Hambaryan, V.V., Errmann, R., Trepl, L., Broeg, Ch, Eisenbeiss, T., Mugrauer, M., Marka, C., Adam, C., Ginski, C., Pribulla, T., Rätz, S., Schmidt, J., Berndt, A., Maciejewski, G., Röll, T., Hohle, M.M., Tetzlaff, N., Fiedler, S., Baar, S.

“…We present a new flare star, which was discovered during our survey on a selected field at the edge of the Pleiades cluster. The field was observed in the…”
Get full text

Transit timing, depth, and duration variation in exoplanet TrES-2? by Raetz, St, Maciejewski, G., Mugrauer, M., Schmidt, T.O.B., Roell, T., Eisenbeiss, T., Berndt, A., Hohle, M.M., Ginski, Ch, Errmann, R., Seeliger, M., Adam, Ch, Pribulla, T., Tetzlaff, N., Vaňko, M., Koppenhoefer, J., Raetz, M., Neuhäuser, R.

“…We report on our ongoing search for timing, duration, and depth variations in the exoplanet TrES-2. In Raetz et al. (2009) we already presented ten different…”
Get full text

Towards the Rosetta Stone of planet formation by Maciejewski, G., Neuhäuser, R., Errmann, R., Mugrauer, M., Adam, Ch, Berndt, A., Eisenbeiss, T., Fiedler, S., Ginski, Ch, Hohle, M., Kramm, U., Marka, C., Moualla, M., Pribulla, T., Raetz, St, Roell, T., Schmidt, T.O.B., Seeliger, M., Spaleniak, I., Tetzlaff, N., Trepl, L.

“…Transiting exoplanets (TEPs) observed just ~10 Myrs after formation of their host systems may serve as the Rosetta Stone for planet formation theories. They…”
Get full text

Diagnosing the Clumpy Protoplanetary Disk of the UXor Type Young Star GM Cephei by Huang, P. C., Chen, W. P., Mugrauer, M., Bischoff, R., Budaj, J., Burkhonov, O., Ehgamberdiev, S., Errmann, R., Garai, Z., Hsiao, H. Y., Hu, C. L., Janulis, R., Jensen, E. L. N., Kiyota, S., Kuramoto, K., Lin, C. S., Lin, H. C., Liu, J. Z., Lux, O., Naito, H., Neuhäuser, R., Ohlert, J., Pakštien, E., Pribulla, T., Qvam, J. K. T., Raetz, St, Sato, S., Schwartz, M., Semkov, E., Takagi, S., Wagner, D., Watanabe, M., Zhang, Yu

“…UX Orionis stars (UXors) are Herbig Ae/Be or T Tauri stars exhibiting sporadic occultation of stellar light by circumstellar dust. GM Cephei is such a UXor in…”
Get full text

YETI observations of the young transiting planet candidate CVSO 30 b by Raetz, St, Schmidt, T. O. B., Czesla, S., Klocová, T., Holmes, L., Errmann, R., Kitze, M., Fernández, M., Sota, A., Briceño, C., Hernández, J., Downes, J. J., Dimitrov, D. P., Kjurkchieva, D., Radeva, V., Wu, Z.-Y., Zhou, X., Takahashi, H., Henych, T., Seeliger, M., Mugrauer, M., Adam, Ch, Marka, C., Schmidt, J. G., Hohle, M. M., Ginski, Ch, Pribulla, T., Trepl, L., Moualla, M., Pawellek, N., Gelszinnis, J., Buder, S., Masda, S., Maciejewski, G., Neuhäuser, R.

“…CVSO 30 is a unique young low-mass system, because, for the first time, a close-in transiting and a wide directly imaged planet candidates are found around a…”
Get full text

Ground-based transit observations of the HAT-P-18, HAT-P-19, HAT-P-27/WASP40 and WASP-21 systems by Seeliger, M., Kitze, M., Errmann, R., Richter, S., Ohlert, J. M., Chen, W. P., Guo, J. K., Göğüş, E., Güver, T., Aydın, B., Mottola, S., Hellmich, S., Fernandez, M., Aceituno, F. J., Dimitrov, D., Kjurkchieva, D., Jensen, E., Cohen, D., Kundra, E., Pribulla, T., Vaňko, M., Budaj, J., Mallonn, M., Wu, Z.-Y., Zhou, X., Raetz, St, Adam, C., Schmidt, T. O. B., Ide, A., Mugrauer, M., Marschall, L., Hackstein, M., Chini, R., Haas, M., Ak, T., Güzel, E., Özdönmez, A., Ginski, C., Marka, C., Schmidt, J. G., Dincel, B., Werner, K., Dathe, A., Greif, J., Wolf, V., Buder, S., Pannicke, A., Puchalski, D., Neuhäuser, R.

“…As part of our ongoing effort to investigate transit timing variations (TTVs) of known exoplanets, we monitored transits of the four exoplanets HAT-P-18b,…”
Get full text

The Young Exoplanet Transit Initiative (YETI) by Neuhäuser, R., Errmann, R., Berndt, A., Maciejewski, G., Takahashi, H., Chen, W.P., Dimitrov, D.P., Pribulla, T., Nikogossian, E.H., Jensen, E.L.N., Marschall, L., Wu, Z.-Y., Kellerer, A., Walter, F.M., Briceño, C., Chini, R., Fernandez, M., Raetz, St, Torres, G., Latham, D.W., Quinn, S.N., Niedzielski, A., Bukowiecki, Ł., Nowak, G., Tomov, T., Tachihara, K., Hu, S.C.-L., Hung, L.W., Kjurkchieva, D.P., Radeva, V.S., Mihov, B.M., Slavcheva-Mihova, L., Bozhinova, I.N., Budaj, J., Vaňko, M., Kundra, E., Hambálek, Ł., Krushevska, V., Movsessian, T., Harutyunyan, H., Downes, J.J., Hernandez, J., Hoffmeister, V.H., Cohen, D.H., Abel, I., Ahmad, R., Chapman, S., Eckert, S., Goodman, J., Guerard, A., Kim, H.M., Koontharana, A., Sokol, J., Trinh, J., Wang, Y., Zhou, X., Redmer, R., Kramm, U., Nettelmann, N., Mugrauer, M., Schmidt, J., Moualla, M., Ginski, C., Marka, C., Adam, C., Seeliger, M., Baar, S., Roell, T., Schmidt, T.O.B., Trepl, L., Eisenbeiß, T., Fiedler, S., Tetzlaff, N., Schmidt, E., Hohle, M.M., Kitze, M., Chakrova, N., Gräfe, C., Schreyer, K., Hambaryan, V.V., Broeg, C.H., Koppenhoefer, J., Pandey, A.K.

“…We present the Young Exoplanet Transit Initiative (YETI), in which we use several 0.2 to 2.6‐m telescopes around the world to monitor continuously young (≤100…”
Get full text

Investigation of a transiting planet candidate in Trumpler 37: An astro-physical false positive eclipsing spectroscopic binary star by 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., Hambälek, 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.

“…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…”
Get full text