Zobrazeno 1 - 10
of 9 837
pro vyhledávání: '"Stelzer B."'
Autor:
Claes, R. A. B., Campbell-White, J., Manara, C. F., Frasca, A., Natta, A., Alcalá, J. M., Armeni, A., Fang, M., Lovell, J. B., Stelzer, B., Venuti, L., Wyatt, M., Queitsch, A.
Studies of the stellar and accretion properties of classical T Tauri stars (CTTS) require comparison with photospheric spectral templates. Here we aim at expanding the currently available grid of wide-wavelength coverage observed spectra of non-accre
Externí odkaz:
http://arxiv.org/abs/2407.11866
Autor:
Raetz, St., Stelzer, B.
Publikováno v:
A&A 687, A180 (2024)
Studies of the rotation and activity of M type stars are essential to enhance our understanding of stellar dynamos and angular momentum evolution. Using the outstanding photometric capabilities of space telescopes rotation signals even with low ampli
Externí odkaz:
http://arxiv.org/abs/2404.16625
Autor:
Schwope, A., Kurpas, J., Baecke, P., Knauff, K., Stütz, L., Tubin-Arenas, D., Standke, A., Anderson, S. F., Bauer, F., Brandt, N., Covey, K., Demasi, S., Dwelly, T., Freund, S., Friedrich, S., Gänsicke, B. T., Maitra, C., Merloni, A., Munoz-Giraldo, D., Rodriguez, A., Salvato, M., Stassun, K., Stelzer, B., Strong, A., Morrison, S.
Publikováno v:
A&A 686, A110 (2024)
Aims. Compact white-dwarf binaries are selected from spectra obtained in the early SDSS-V plate program. A dedicated set of SDSS plate observations were carried out in the eFEDS field, providing spectroscopic classifications for a significant fractio
Externí odkaz:
http://arxiv.org/abs/2401.17304
Autor:
Poppenhaeger, K., Ketzer, L., Ilic, N., Magaudda, E., Robrade, J., Stelzer, B., Schmitt, J. H. M. M., Schneider, P. C.
The planet GJ 367 b is a recently discovered high-density sub-Earth orbiting an M dwarf star. Its composition was modelled to be predominantly iron with a potential remainder of a hydrogen-helium envelope. Here we report an X-ray detection of this pl
Externí odkaz:
http://arxiv.org/abs/2401.17302
Publikováno v:
A&A 687, A237 (2024)
The high-energy environment of the host stars could be deleterious for their planets. It is crucial to ascertain this contextual information to fully characterize the atmospheres of terrestrial exoplanets. We aim to fully characterize a unique triple
Externí odkaz:
http://arxiv.org/abs/2401.17303
Publikováno v:
A&A 687, A95 (2024)
We aim at advancing our understanding of magnetic activity and the underlying dynamo mechanism at the end of the main-sequence. To this end, we collected simultaneous X-ray and radio observations for a sample of M7-L0 dwarfs using XMM-Newton jointly
Externí odkaz:
http://arxiv.org/abs/2401.17292
Publikováno v:
A&A 688, A49 (2024)
We study variability through simultaneous optical and X-ray observations for the first time in a statistical sample of 256 M dwarfs. Such observations are required to constrain the flare frequency and energetics and to understand the physics of flare
Externí odkaz:
http://arxiv.org/abs/2401.17287
Autor:
Merloni, A., Lamer, G., Liu, T., Ramos-Ceja, M. E., Brunner, H., Bulbul, E., Dennerl, K., Doroshenko, V., Freyberg, M. J., Friedrich, S., Gatuzz, E., Georgakakis, A., Haberl, F., Igo, Z., Kreykenbohm, I., Liu, A., Maitra, C., Malyali, A., Mayer, M. G. F., Nandra, K., Predehl, P., Robrade, J., Salvato, M., Sanders, J. S., Stewart, I., Tubín-Arenas, D., Weber, P., Wilms, J., Arcodia, R., Artis, E., Aschersleben, J., Avakyan, A., Aydar, C., Bahar, Y. E., Balzer, F., Becker, W., Berger, K., Boller, T., Bornemann, W., Brüggen, M., Brusa, M., Buchner, J., Burwitz, V., Camilloni, F., Clerc, N., Comparat, J., Coutinho, D., Czesla, S., Dannhauer, S. M., Dauner, L., Dauser, T., Dietl, J., Dolag, K., Dwelly, T., Egg, K., Ehl, E., Freund, S., Friedrich, P., Gaida, R., Garrel, C., Ghirardini, V., Gokus, A., Grünwald, G., Grandis, S., Grotova, I., Gruen, D., Gueguen, A., Hämmerich, S., Hamaus, N., Hasinger, G., Haubner, K., Homan, D., Chitham, J. Ider, Joseph, W. M., Joyce, A., König, O., Kaltenbrunner, D. M., Khokhriakova, A., Kink, W., Kirsch, C., Kluge, M., Knies, J., Krippendorf, S., Krumpe, M., Kurpas, J., Li, P., Liu, Z., Locatelli, N., Lorenz, M., Müller, S., Magaudda, E., Mannes, C., McCall, H., Meidinger, N., Michailidis, M., Migkas, K., Muñoz-Giraldo, D., Musiimenta, B., Nguyen-Dang, N. T., Ni, Q., Olechowska, A., Ota, N., Pacaud, F., Pasini, T., Perinati, E., Pires, A. M., Pommranz, C., Ponti, G., Poppenhaeger, K., Pühlhofer, G., Rau, A., Reh, M., Reiprich, T. H., Roster, W., Saeedi, S., Santangelo, A., Sasaki, M., Schmitt, J., Schneider, P. C., Schrabback, T., Schuster, N., Schwope, A., Seppi, R., Serim, M. M., Shreeram, S., Sokolova-Lapa, E., Starck, H., Stelzer, B., Stierhof, J., Suleimanov, V., Tenzer, C., Traulsen, I., Trümper, J., Tsuge, K., Urrutia, T., Veronica, A., Waddell, S. G. H., Willer, R., Wolf, J., Yeung, M. C. H., Zainab, A., Zangrandi, F., Zhang, X., Zhang, Y., Zheng, X.
Publikováno v:
A&A, vol. 682, A34 (2024)
The eROSITA telescope array aboard the Spektrum Roentgen Gamma (SRG) satellite began surveying the sky in December 2019, with the aim of producing all-sky X-ray source lists and sky maps of an unprecedented depth. Here we present catalogues of both p
Externí odkaz:
http://arxiv.org/abs/2401.17274
Autor:
Federicova, P., Affolder, A., Beck, G. A., Bevand, A. J., Chen, Z., Dawson, I., Deshmukh, A., Dowling, A., Fadeyev, V., Fernandez-Tejero, J., Fournier, A., Gonzalez, N., Hommels, L., Jessiman, C., Kachiguin, S., Klein, Ch., Koffas, T., Kroll, J., Latonova, V., Mikestikova, M., Miyagawa, P. S., O'Toole, S., Paddock, Q., Poley, L., Staats, E., Stelzer, B., Tuma, P., Ullan, M., Unno, Y., Zenz, S. C.
Construction of the new all-silicon Inner Tracker (ITk), developed by the ATLAS collaboration for the High Luminosity LHC, started in 2020 and is expected to continue till 2028. The ITk detector will include 18,000 highly segmented and radiation hard
Externí odkaz:
http://arxiv.org/abs/2309.15561
Autor:
Armeni, A., Stelzer, B., Claes, R. A. B., Manara, C. F., Frasca, A., Alcalá, J. M., Walter, F. M., Kóspál, Á., Campbell-White, J., Gangi, M., Mauco, K., Tychoniec, L.
Publikováno v:
A&A 679, A14 (2023)
HM Lup is a young M-type star that accretes material from a circumstellar disk through a magnetosphere. Our aim is to study the inner disk structure of HM Lup and to characterize its variability. We used spectroscopic data from HST/STIS, X-Shooter, a
Externí odkaz:
http://arxiv.org/abs/2309.10591