Zobrazeno 1 - 10
of 739
pro vyhledávání: '"Clémens, J. C."'
We report the discovery of two apparently isolated stellar remnants that exhibit rotationally modulated magnetic Balmer emission, adding to the emerging DAHe class of white dwarf stars. While the previously discovered members of this class show Zeema
Externí odkaz:
http://arxiv.org/abs/2302.10207
Autor:
Maciaszek, T., Ealet, A., Gillard, W., Jahnke, K., Barbier, R., Prieto, E., Bon, W., Bonnefoi, A., Caillat, A., Carle, M., Costille, A., Ducret, F., Fabron, C., Foulon, B., Gimenez, J. L., Grassi, E., Jaquet, M., Mignant, D. Le, Martin, L., Pamplona, T., Sanchez, P., Clémens, J. C., Caillat, L., Niclas, M., Secroun, A., Kubik, B., Ferriol, S., Berthe, M., Barrière, J. C., Fontigne, J., Valenziano, L., Auricchio, N., Battaglia, P., De Rosa, A., Farinelli, R., Franceschi, E., Medinaceli, E., Morgante, G., Sortino, F., Trifoglio, M., Corcione, L., Capobianco, V., Ligori, S., Dusini, S., Borsato, E., Corso, F. Dal, Laudisio, F., Sirignano, C., Stanco, L., Ventura, S., Patrizii, L., Chiarusi, T., Fornari, F., Giacomini, F., Margiotta, A., Mauri, N., Pasqualini, L., Sirri, G., Spurio, M., Tenti, M., Travaglini, R., Bonoli, C., Bortoletto, F., Balestra, A., D'Alessandro, M., Grupp, F., Penka, D., Steinwagner, J., Hormuth, F., Schirmer, M., Seidel, G., Padilla, C., Casas, R., Lloro, I., Toledo-Moreo, R., Gomez, J., Colodro-Conde, C., Lizán, D., Diaz, J. J., Lilje, P. B., Andersen, M. I., Andersen, J., Sørensen, A., Hornstrup, A., Jessen, N. C., Thizy, C., Holmes, W., Pniel, M., Jhabvala, M., Pravdo, S., Seiffert, M., Waczynski, A., Laureijs, R. J., Racca, G., Salvignol, J. C., Boenke, T., Strada, P., Mellier, Y.
Publikováno v:
Proceedings of the SPIE, Volume 12180, id. 121801K 18 pp. (2022)
The NISP (Near Infrared Spectrometer and Photometer) is one of the two Euclid instruments. It operates in the near-IR spectral region (950-2020nm) as a photometer and spectrometer. The instrument is composed of: a cold (135 K) optomechanical subsyste
Externí odkaz:
http://arxiv.org/abs/2210.10112
Autor:
da Rosa, Gabriela Oliveira, Kepler, S. O., Córsico, Alejandro H., Costa, J. E. S., Hermes, J. J., Kawaler, S. D., Bell, Keaton J., Montgomery, M. H., Provencal, J. L., Winget, D. E., Handler, G., Dunlap, Bart, Clemens, J. C., Uzundag, Murat
PG 1159-035 is the prototype of the DOV hot pre-white dwarf pulsators. It was observed during the Kepler satellite K2 mission for 69 days in 59 s cadence mode and by the TESS satellite for 25 days in 20 s cadence mode. We present a detailed asterosei
Externí odkaz:
http://arxiv.org/abs/2208.04791
Autor:
Dennihy, Erik, Xu, Siyi, Lai, Samuel, Bonsor, Amy, Clemens, J. C., Dufour, Patrick, Gansicke, Boris T., Fusillo, Nicola Pietro Gentile, Hardy, Francois, Hegedus, R. J., Hermes, J. J., Kaiser, B. C., Kissler-Patig, Markus, Klein, Beth, Manser, Christopher J., Reding, Joshua S.
Observations of debris disks, the products of the collisional evolution of rocky planetesimals, can be used to trace planetary activity across a wide range of stellar types. The most common end points of stellar evolution are no exception as debris d
Externí odkaz:
http://arxiv.org/abs/2010.03693
Autor:
Reding, Joshua S., Hermes, J. J., Vanderbosch, Z., Dennihy, E., Kaiser, B. C., Mace, C. B., Dunlap, B. H., Clemens, J. C.
Publikováno v:
ApJ 2020, 894, 19
We report the discovery of short-period photometric variability and modulated Zeeman-split hydrogen emission in SDSSJ125230.93-023417.72 (EPIC 228939929), a variable white dwarf star observed at long cadence in \textit{K2} Campaign 10. The behavior i
Externí odkaz:
http://arxiv.org/abs/2003.10450
We present a bulk sample analysis of the metal polluted white dwarfs which also host infrared bright dusty debris disks, known to be direct signatures of an active exoplanetary accretion source. We explore the relative positions of these systems in a
Externí odkaz:
http://arxiv.org/abs/1809.07198
Observations of heavy metal pollution in white dwarf stars indicate that metal-rich planetesimals are frequently scattered into star-grazing orbits, tidally disrupted, and accreted onto the white dwarf surface, offering direct insight into the dynami
Externí odkaz:
http://arxiv.org/abs/1801.05443
Autor:
Nicholl, M., Berger, E., Kasen, D., Metzger, B. D., Elias, J., Briceno, C., Alexander, K. D., Blanchard, P. K., Chornock, R., Cowperthwaite, P. S., Eftekhari, T., Fong, W., Margutti, R., Villar, V. A., Williams, P. K. G., Brown, W., Annis, J., Bahramian, A., Brout, D., Brown, D. A., Chen, H. -Y., Clemens, J. C., Dennihy, E., Dunlap, B., Holz, D. E., Marchesini, E., Massaro, F., Moskowitz, N., Pelisoli, I., Rest, A., Ricci, F., Sako, M., Soares-Santos, M., Strader, J.
We present optical and ultraviolet spectra of the first electromagnetic counterpart to a gravitational wave (GW) source, the binary neutron star merger GW170817. Spectra were obtained nightly between 1.5 and 9.5 days post-merger, using the SOAR and M
Externí odkaz:
http://arxiv.org/abs/1710.05456
Autor:
Dennihy, E., Clemens, J. C., Debes, John H., Dunlap, B. H., Kilkenny, D., O'Brien, P. C., Fuchs, J. T.
We present a simple method for identifying candidate white dwarf systems with dusty exoplanetary debris based on a single temperature blackbody model fit to the infrared excess. We apply this technique to a sample of Southern Hemisphere white dwarfs
Externí odkaz:
http://arxiv.org/abs/1709.09675
Autor:
Hermes, J. J., Gaensicke, B. T., Kawaler, Steven D., Greiss, S., Tremblay, P. -E., Fusillo, Nicola Pietro Gentile, Raddi, R., Fanale, S. M., Bell, Keaton J., Dennihy, E., Fuchs, J. T., Dunlap, B. H., Clemens, J. C., Montgomery, M. H., Winget, D. E., Chote, P., Marsh, T. R., Redfield, S.
We present photometry and spectroscopy for 27 pulsating hydrogen-atmosphere white dwarfs (DAVs, a.k.a. ZZ Ceti stars) observed by the Kepler space telescope up to K2 Campaign 8, an extensive compilation of observations with unprecedented duration (>7
Externí odkaz:
http://arxiv.org/abs/1709.07004