Zobrazeno 1 - 10
of 2 847
pro vyhledávání: '"TOMA R. A."'
Using light curves with $\sim$3 min cadence and a duration of 2 hrs made using the OmegaWhite survey, we present the results of a search for short-period variable stars in the field of 20 open clusters. We identified 92 variable stars in these fields
Externí odkaz:
http://arxiv.org/abs/2203.11533
Autor:
Vaduvescu, O., Hudin, L., Mocnik, T., Char, F., Sonka, A., Tudor, V., Ordonez-Etxeberria, I., Alfaro, M. Diaz, Ashley, R., Errmann, R., Short, P., Moloceniuc, A., Cornea, R., Inceu, V., Zavoianu, D., Popescu, M., Curelaru, L., Mihalea, S., Stoian, A. -M., Boldea, A., Toma, R., Fields, L., Grigore, V., Stoev, H., Lopez-Martinez, F., Humphries, N., Sowicka, P., Ramanjooloo, Y., Manilla-Robles, A., Riddick, F. C., Jimenez-Lujan, F., Mendez, J., Aceituno, F., Sota, A., Jones, D., Hidalgo, S., Murabito, S., Oteo, I., Bongiovanni, A., Zamora, O., Pyrzas, S., Genova-Santos, R., Font, J., Bereciartua, A., Perez-Fournon, I., Martinez-Vazquez, C. E., Monelli, M., Cicuendez, L., Monteagudo, L., Agulli, I., Bouy, H., Huelamo, N., Monguio, M., Gansicke, B. T., Steeghs, D., Gentile-Fusillo, N. P., Hollands, M. A., Toloza, O., Manser, C. J., Dhillon, V., Sahman, D., Fitzsimmons, A., McNeill, A., Thompson, A., Tabor, M., Murphy, D. N. A., Davies, J., Snodgrass, C., Triaud, A. H. M. J., Groot, P. J., Macfarlane, S., Peletier, R., Sen, S., Ikiz, T., Hoekstra, H., Herbonnet, R., Kohlinger, F., Greimel, R., Afonso, A., Parker, Q. A., Kong, A. K. H., Bassa, C., Pleunis, Z.
Publikováno v:
A&A 609, A105 (2018)
One-opposition near-Earth asteroids (NEAs) are growing in number, and they must be recovered to prevent loss and mismatch risk, and to improve their orbits, as they are likely to be too faint for detection in shallow surveys at future apparitions. We
Externí odkaz:
http://arxiv.org/abs/1711.00709
Autor:
Kupfer, T., Ramsay, G., van Roestel, J., Brooks, J., Macfarlane, S. A., Toma, R., Groot, P. J., Woudt, P. A., Bildsten, L., Marsh, T. R., Green, M. J., Breedt, E., Kilkenny, D., Freudenthal, J., Geier, S., Heber, U., Bagnulo, S., Blagorodnova, N., Buckley, D. A. H., Dhillon, V. S., Kulkarni, S. R., Lunnan, R., Prince, T. A.
We report the discovery of the ultracompact hot subdwarf (sdOB) binary OW J074106.0-294811.0 with an orbital period of P$_{\rm orb}=44.66279\pm1.16\times10^{-4}$ min, making it the most compact hot subdwarf binary known. Spectroscopic observations us
Externí odkaz:
http://arxiv.org/abs/1710.07287
Autor:
Vaduvescu, O., Conovici, M., Popescu, M., Sonka, A., Paraschiv, A., Lacatus, D., Tudorica, A., Hudin, L., Curelaru, L., Inceu, V., Zavoianu, D., Cornea, R., Toma, R., Asher, D. J., Hadnett, J., O'Cheallaigh, L.
As part of the EURONEAR project, almost 70,000 mosaic Suprime-Cam images taken between 1999 and 2013 were data mined for about 9,800 near Earth asteroids (NEAs) known by 2013 May. Using our PRECOVERY server and the "Find Subaru CCD" tool, we scrutini
Externí odkaz:
http://arxiv.org/abs/1704.03936
Autor:
Macfarlane, S. A., Woudt, P. A., Dufour, P., Ramsay, G., Groot, P. J., Toma, R., Warner, B., Paterson, K., Kupfer, T., van Roestel, J., Berdnikov, L., Dagne, T., Hardy, F.
We present the discovery and follow-up observations of the second known variable warm DQ white dwarf OW J175358.85-310728.9 (OW J1753-3107). OW J1753-3107 is the brightest of any of the currently known warm or hot DQ and was discovered in the OmegaWh
Externí odkaz:
http://arxiv.org/abs/1703.08122
Autor:
Vaduvescu, O., Gorgan, D., Copandean, D., Bacu, V., Stefanut, T., Sabou, A., Nandra, C., Boldea, C., Pinter, V., Popescu, M., Petrescu, E., Bertesteanu, D., Davison, T., Pérez Toledo, F.M., Boldea, A., Predatu, M., Zegmott, T., Wilson, T.G., Hudin, L., Stanescu, M., Stanica, A., Buhulea, A., Stoica, A., Timpea, A., Anghel, S., Ciobanu, D., Toma, R., Casanova, V., Stecklum, B., Choque-Challapa, N., Short, P., Tudorica, A.
Publikováno v:
In New Astronomy October 2021 88
Autor:
Macfarlane, S. A., Woudt, P. A., Groot, P. J., Ramsay, G., Toma, R., Motsoaledi, M., Crause, L. A., Gilbank, D. G., O'Donoghue, D., Potter, S. B., Sickafoose, A. A., van Gend, C., Worters, H. L.
We present photometric and spectroscopic follow-up observations of short-period variables discovered in the OmegaWhite survey: a wide-field high-cadence g-band synoptic survey targeting the Galactic Plane. We have used fast photometry on the SAAO 1.0
Externí odkaz:
http://arxiv.org/abs/1610.05687
Autor:
Macfarlane, S. A., Toma, R., Ramsay, G., Groot, P. J., Woudt, P. A., Drew, J. E., Barentsen, G., Eisloffel, J.
We present the goals, strategy and first results of the OmegaWhite survey: a wide-field high-cadence $g$-band synoptic survey which aims to unveil the Galactic population of short-period variable stars (with periods $<$ 80 min), including ultracompac
Externí odkaz:
http://arxiv.org/abs/1508.06277
Publikováno v:
Research in Science Education; Aug2024, Vol. 54 Issue 4, p549-572, 24p
Autor:
Vaduvescu, O., Birlan, M., Tudorica, A., Popescu, M., Colas, F., Asher, D. J., Sonka, A., Suciu, O., Lacatus, D., Paraschiv, A., Badescu, T., Tercu, O., Dumitriu, A., Chirila, A., Stecklum, B., Licandro, J., Nedelcu, A., Turcu, E., Vachier, F., Beauvalet, L., Taris, F., Bouquillon, L., Nunez, F. Pozo, Saavedra, J. P. Colque, Unda-Sanzana, E., Karami, M., Khosroshahi, H. G., Toma, R., Ledo, H., Tyndall, A., Patrick, L., Fohring, D., Muelheims, D., Enzian, G., Klaes, D., Lenz, D., Mahlberg, P., Ordenes, Y., Sendlinger, K.
Publikováno v:
2013P&SS...85..299V
We report follow-up observations of 477 program Near-Earth Asteroids (NEAs) using nine telescopes of the EURONEAR network having apertures between 0.3 and 4.2 m. Adding these NEAs to our previous results we now count 739 program NEAs followed-up by t
Externí odkaz:
http://arxiv.org/abs/1308.5594