Zobrazeno 1 - 10
of 113 031
pro vyhledávání: '"Astrophysics - Solar and Stellar Astrophysics"'
We develop analytical tools and perform three-body simulations to investigate the orbital evolution and dynamical stability of binary planets within star clusters. Our analytical results show that the orbital stability of a planetary-mass binary agai
Externí odkaz:
http://arxiv.org/abs/2407.04261
Autor:
Balsalobre-Ruza, O., Lillo-Box, J., Barrado, D., Correia, A., Faria, J. P., Figueira, P., Leleu, A., Robutel, P., Santos, N., Herrero-Cisneros, E.
Co-orbital objects, also known as trojans, are frequently found in simulations of planetary system formation. In these configurations, a planet shares its orbit with other massive bodies. It is still unclear why there have not been any co-orbitals di
Externí odkaz:
http://arxiv.org/abs/2407.04677
Autor:
Chen, Christine H., Lu, Cicero X., Worthen, Kadin, Law, David R., Sargent, B. A., Moro-Martin, Amaya, Sloan, G. C., Lisse, Carey M., Watson, Dan M., Girard, Julien H., Chair, Yiwei, Hines, Dean C., Kammerer, Jens, Li, Alexis, Perrin, Marshall, Pueyo, Laurent, Rebollido, Isabel, Stapelfeldt, Karl R., Stark, Christopher, Werner, Michael W.
Modeling observations of the archetypal debris disk around $\beta$ Pic, obtained in 2023 January with the MIRI MRS on board JWST, reveals significant differences compared with that obtained with the IRS on board Spitzer. The bright 5 - 15 $\mu$m cont
Externí odkaz:
http://arxiv.org/abs/2407.04661
Autor:
Hudson, Hugh S.
Solar flares commonly have a hot onset precursor event" (HOPE), detectable from soft X-ray observations. Detecting this requires subtraction of pre-flare fluxes from the non-flaring Sun prior to the event, fitting an isothermal emission model to the
Externí odkaz:
http://arxiv.org/abs/2407.04567
Autor:
Gopalswamy, Nat, Michalek, Grzegorz, Yashiro, Seiji, Makela, Pertti, Akiyama, Sachiko, Xie, Hong
We assess the relative strength of solar cycle (SC) 25 with respect to SCs 23 and 24 based on the abundance of halo coronal mass ejections (CMEs). We make use of the halo CME database (https://cdaw.gsfc.nasa.gov/CME_list/halo/halo.html) to compare th
Externí odkaz:
http://arxiv.org/abs/2407.04548
Autor:
Geier, S., Heber, U., Irrgang, A., Dorsch, M., Bastian, A., Neunteufel, P., Kupfer, T., Bloemen, S., Kreuzer, S., Möller, L., Schindewolf, M., Schneider, D., Ziegerer, E., Pelisoli, I., Schaffenroth, V., Barlow, B. N., Raddi, R., Geier, S. J., Reindl, N., Rauch, T., Nemeth, P., Gänsicke, B. T.
Hot subdwarfs (sdO/B) are the stripped helium cores of red giants formed by binary interactions. Close hot subdwarf binaries with massive white dwarf companions have been proposed as possible progenitors of thermonuclear supernovae type Ia (SN Ia). I
Externí odkaz:
http://arxiv.org/abs/2407.04479
Full disk observations of the solar chromosphere in the Ca II K line represent a valuable dataset for studies of solar magnetic activity. The S-index is widely used to investigate the magnetic activity of stars, however, its connection to the coverag
Externí odkaz:
http://arxiv.org/abs/2407.04475
Autor:
Van der Swaelmen, M., Vazquez, C. Viscasillas, Magrini, L., Recio-Blanco, A., Palicio, P. A., Worley, C., Vallenari, A., Spina, L., François, P., Tautvaišiene, G., Sacco, G. G., Randich, S., de Laverny, P.
(abridged) The third data release of Gaia, has provided stellar parameters, metallicity [M/H], [{\alpha}/Fe], individual abundances, broadening parameter from its RVS spectra for about 5.6 million objects thanks to the GSP-Spec module. The catalogue
Externí odkaz:
http://arxiv.org/abs/2407.04204
Autor:
Livadiotis, G., Cummings, A. T., Cuesta, M. E., Bandyopadhyay, R., Farooki, H. A., Khoo, L. Y., McComas, D. J., Rankin, J. S., Sharma, T., Shen, M. M., Cohen, C. M. S., Muro, G. D., Xu, Z.
We develop the kappa-tail fitting technique, which analyzes observations of power-law tails of distributions and energy-flux spectra and connects them to theoretical modeling of kappa distributions, to determine the thermodynamics of the examined spa
Externí odkaz:
http://arxiv.org/abs/2407.04188
With the advent of large spectroscopic surveys, automated stellar parameter determination has become commonplace. Nevertheless, spectral classification still offers a quick and useful alternative for obtaining parameter estimates for large samples of
Externí odkaz:
http://arxiv.org/abs/2407.04163