Zobrazeno 1 - 10
of 309
pro vyhledávání: '"Guillen, P. F."'
(Abridged) We present narrow-band images in several emission lines, and high- and intermediate-resolution long-slit spectra of Me2-1 to investigate its morphology and 3D structure, its physical parameters and chemical abundances. We identified in Me2
Externí odkaz:
http://arxiv.org/abs/2405.02938
Autor:
Gómez-Muñoz, M. A., Vázquez, R., Sabin, L., Olguín, L., Guillén, P. F., Zavala, S., Michel, R.
Publikováno v:
A&A 676, A101 (2023)
We investigated the origin of the Planetary Nebula (PN) M 1-16 using narrow-band optical imaging, and high- and low-resolution optical spectra to perform a detailed morpho-kinematic and chemical studies. M 1-16 is revealed to be a multipolar PN that
Externí odkaz:
http://arxiv.org/abs/2306.07044
An optimal control problem associated to the Keller-Segel with logistic reaction system will be studied in $2D$ domains. The control acts in a bilinear form only in the chemical equation. The existence of optimal control and a necessary optimality sy
Externí odkaz:
http://arxiv.org/abs/2206.15111
Autor:
Guillén-González, F., Tierra, G.
This work is devoted to design and study efficient and accurate numerical schemes to approximate a chemo-attraction model with consumption effects, which is a nonlinear parabolic system for two variables; the cell density and the concentration of the
Externí odkaz:
http://arxiv.org/abs/2112.03431
In this work we analyse a PDE-ODE problem modelling the evolution of a Glioblastoma, which includes chemotaxis term directed to vasculature. First, we obtain some a priori estimates for the (possible) solutions of the model. In particular, under some
Externí odkaz:
http://arxiv.org/abs/2109.14322
Autor:
Wells, R. D., Rackham, B. V., Schanche, N., Petrucci, R., Chew, Y. Gomez Maqueo, Demory, B. -O., Burgasser, A. J., Burn, R., Pozuelos, F. J., Gunther, M. N., Sabin, L., Schroffenegger, U., Gomez-Munoz, M. A., Stassun, K. G., Van Grootel, V., Howell, S. B., Sebastian, D., Triaud, A. H. M. J., Apai, D., Plauchu-Frayn, I., Guerrero, C. A., Guillen, P. F., Landa, A., Melgoza, G., Montalvo, F., Serrano, H., Riesgo, H., Barkaoui, K., Bixel, A., Burdanov, A., Chen, W. P., Chinchilla, P., Collins, K. A., Daylan, T., de Wit, J., Delrez, L., Devora-Pajares, M., Dietrich, J., Dransfield, G., Ducrot, E., Fausnaugh, M., Furlan, E., Gabor, P., Gan, T., Garcia, L., Ghachoui, M., Giacalone, S., Gibbs, A. B., Gillon, M., Gnilka, C., Gore, R., Guerrero, N., Henning, T., Hesse, K., Jehin, E., Jenkins, J. M., Latham, D. W., Lester, K., McCormac, J., Murray, C. A., Niraula, P., Pedersen, P. P., Queloz, D., Ricker, G., Rodriguez, D. R., Schroeder, A., Schwarz, R. P., Scott, N., Seager, S., Theissen, C. A., Thompson, S., Timmermans, M., Twicken, J. D., Winn, J. N.
Publikováno v:
A&A 653, A97 (2021)
Large sub-Neptunes are uncommon around the coolest stars in the Galaxy and are rarer still around those that are metal-poor. However, owing to the large planet-to-star radius ratio, these planets are highly suitable for atmospheric study via transmis
Externí odkaz:
http://arxiv.org/abs/2107.14125
Autor:
Miranda, L. F., Suárez, O., Olguín, L., Vázquez, R., Sabin, L., Guillén, P. F., Gómez, J. F., Uscanga, L., García-Lario, P., de Gregorio-Monsalvo, I., Aller, A., Manchado, A., Boumis, P., Riesgo, H., Matías, J. M.
Water maser emitting planetary nebulae (H$_2$O-PNe) are believed to be among the youngest PNe. We present new optical narrow- and broad-band images, intermediate- and high-resolution long-slit spectra, and archival optical images of the H$_2$O-PN IRA
Externí odkaz:
http://arxiv.org/abs/2105.05186
In this paper we analyse a differential system related to a Glioblastoma growth. Using numerical simulations, we prove that model captures different kind of growth changing adequately the parameters of the model. Firstly, we make an adimensional stud
Externí odkaz:
http://arxiv.org/abs/2104.04560
In this work we analyse a PDE-ODE problem modelling the evolution of a Glioblastoma, which includes an anisotropic nonlinear diffusion term with a diffusion velocity increasing with respect to vasculature. First, we prove the existence of global in t
Externí odkaz:
http://arxiv.org/abs/2012.12625
Autor:
Rodríguez-González, J. B., Sabin, L., Toalá, J. A., Zavala, S., Ramos-Larios, G., Guerrero, M. A., Parker, Q. A., Guillén, P. F., Ritter, A.
We present the first detailed study of the bipolar planetary nebula (PN) IPHASX J191104.8$+$060845 (PN G040.6$-$01.5) discovered as part of the Isaac Newton Telescope Photometric H$\alpha$ Survey of the Northern Galactic plane (IPHAS). We present Nor
Externí odkaz:
http://arxiv.org/abs/2009.11164