Zobrazeno 1 - 10
of 1 250
pro vyhledávání: '"A. Peimbert"'
The long-term evolution of the outer Solar System is subject to the influence of the giant planets, however, perturbations from other massive bodies located in the region imprint secular signatures, that are discernible in long-term simulations. In t
Externí odkaz:
http://arxiv.org/abs/2410.16570
The capability to efficiently search for objects in complex environments is fundamental for many real-world robot applications. Recent advances in open-vocabulary vision models have resulted in semantically-informed object navigation methods that all
Externí odkaz:
http://arxiv.org/abs/2409.11764
Autor:
Méndez-Delgado, J. Eduardo, Esteban, César, García-Rojas, Jorge, Kreckel, Kathryn, Peimbert, Manuel
In a very recent work, [1] claim that the scenario of temperature inhomogeneities proposed by [2] ($t2$ > 0) is not able to explain the O$^{2+}$/H$^{+}$ abundance discrepancy observed between the calculations based on the optical [OIII] collisional e
Externí odkaz:
http://arxiv.org/abs/2310.01197
Autor:
Méndez-Delgado, J. E., Esteban, C., García-Rojas, J., Arellano-Córdova, K. Z., Kreckel, K., Gómez-Llanos, V., Egorov, O. V., Peimbert, M., Orte-García, M.
We present a first study based on the analysis of the DEep Spectra of Ionized REgions Database (DESIRED). This is a compilation of 190 high signal-to-noise ratio optical spectra of HII regions and other photoionized nebulae, mostly observed with 8-10
Externí odkaz:
http://arxiv.org/abs/2305.13136
Autor:
Méndez-Delgado, J. Eduardo, Esteban, César, García-Rojas, Jorge, Kreckel, Kathryn, Peimbert, Manuel
HII regions, ionized nebulae where massive star formation has taken place, exhibit a wealth of emission lines that are the fundamental basis for estimating the chemical composition of the Universe. For more than 80 years, a discrepancy of at least a
Externí odkaz:
http://arxiv.org/abs/2305.11578
Publikováno v:
MNRAS, 519, 5656 (2023)
The nebular He II {\lambda}1640 emission line is observed in star forming galaxies out to large distances and can be used to constrain the properties of sources of He+ ionizing photons. For this purpose, it is crucial to understand which are the main
Externí odkaz:
http://arxiv.org/abs/2303.04243
Debris discs consist of belts of bodies ranging in size from dust grains to planetesimals; these belts are visible markers of planetary systems around other stars that can reveal the influence of extrasolar planets through their shape and structure.
Externí odkaz:
http://arxiv.org/abs/2301.05265
Autor:
Richer, Michael G., Arrieta, Anabel, Arias, Lorena, Carlos, Lesly Castañeda, Torres-Peimbert, Silvia, López, José Alberto, Galindo, Adolfo
We study the kinematics of emission lines that arise from many physical processes in NGC 6153 based upon deep, spatially-resolved, high resolution spectra acquired with the UVES spectrograph at the ESO VLT. Our most basic finding is that the plasma i
Externí odkaz:
http://arxiv.org/abs/2210.05085
We conducted a long-slit spectrophotometry analysis to obtain the chemical abundances of seven metal-poor HII regions in three galaxies: UM 160, UM 420, and TOL 0513-393. The data have been taken with the Focal Reducer Low Dispersion Spectrograph 1 (
Externí odkaz:
http://arxiv.org/abs/2105.12260
We study in depth the abundance discrepancy problem in H II regions, this time from a different perspective than the usual one: by studying the effect of the upper mass limit (M$_{\rm up}$) of the initial mass function (IMF) on the O, C, and He predi
Externí odkaz:
http://arxiv.org/abs/2006.07335