Zobrazeno 1 - 10
of 3 368
pro vyhledávání: '"Galarza, P."'
Autor:
Galarza, Jhon Yana, Lorenzo-Oliveira, Diego, Ferreira, Thiago, Reggiani, Henrique, Behmard, Aida, Simon, Joshua D., Martioli, Eder, López-Valdivia, Ricardo, de Almeida, Leandro, Jofré, Emiliano, El-Badry, Kareem
We present HIP 8522, a young solar twin with the lowest detected lithium, potentially a field blue straggler or the result of episodic early accretion. Its stellar parameters ($T_{\rm eff} = 5729 \pm 7$ K, $\log g = 4.532 \pm 0.016$ dex, $\rm{[Fe/H]}
Externí odkaz:
http://arxiv.org/abs/2410.17590
Autor:
Reggiani, Henrique, Galarza, Jhon Yana, Lorenzo-Oliveira, Diego, Covarrubias, Sofia, Oyague, Micaela, Valle, Rita, Chanamé, Julio
Measurement of lithium abundances in solar-type stars have shown that standard models of stellar evolution are incapable of explaining the observed depletion as a function of stellar age. Beryllium is one of the lightest elements that can be measured
Externí odkaz:
http://arxiv.org/abs/2408.10999
Autor:
Galarza, Jhon Yana, Reggiani, Henrique, Ferreira, Thiago, Lorenzo-Oliveira, Diego, Simon, Joshua D., McWilliam, Andrew, Schlaufman, Kevin C., Miquelarena, Paula, Trivigno, Matias Flores, Arancibia, Marcelo Jaque
Over the last decade, studies of large samples of binary systems identified chemical anomalies, and showed that they might be attributed to planet formation or planet engulfment. However, both scenarios have primarily been tested in pairs without kno
Externí odkaz:
http://arxiv.org/abs/2407.20949
Autor:
Evans, Ian N., Evans, Janet D., Martínez-Galarza, J. Rafael, Miller, Joseph B., Primini, Francis A., Azadi, Mojegan, Burke, Douglas J., Civano, Francesca M., D'Abrusco, Raffaele, Fabbiano, Giuseppina, Graessle, Dale E., Grier, John D., Houck, John C., Lauer, Jennifer, McCollough, Michael L., Nowak, Michael A., Plummer, David A., Rots, Arnold H., Siemiginowska, Aneta, Tibbetts, Michael S.
The Chandra Source Catalog (CSC) is a virtual X-ray astrophysics facility that enables both detailed individual source studies and statistical studies of large samples of X-ray sources detected in ACIS and HRC-I imaging observations obtained by the C
Externí odkaz:
http://arxiv.org/abs/2407.10799
Autor:
Miquelarena, P., Saffe, C., Flores, M., Petrucci, R., Galarza, J. Yana, Alacoria, J., Arancibia, M. Jaque, Jofré, E., Armijo, K. Montenegro, Gunella, F.
Aims.We conduct a high-precision differential abundance analysis of the remarkable binary system HD 240429/30 (Krios and Kronos, respectively), whose difference in metallicity is one of the highest detected in systems with similar components to date
Externí odkaz:
http://arxiv.org/abs/2406.06705
Boolean networks can be viewed as functions on the set of binary strings of a given length, described via logical rules. They were introduced as dynamic models into biology, in particular as logical models of intracellular regulatory networks involvi
Externí odkaz:
http://arxiv.org/abs/2404.16760
Autor:
del Pino, A., López-Sanjuan, C., Hernán-Caballero, A., Domínguez-Sánchez, H., von Marttens, R., Fernández-Ontiveros, J. A., Coelho, P. R. T., Lumbreras-Calle, A., Vega-Ferrero, J., Jimenez-Esteban, F., Cruz, P., Marra, V., Quartin, M., Galarza, C. A., Angulo, R. E., Cenarro, A. J., Cristóbal-Hornillos, D., Dupke, R. A., Ederoclite, A., Hernández-Monteagudo, C., Marín-Franch, A., Moles, M., Sodré Jr., L., Varela, J., Ramió, H. Vázquez
With its 12 optical filters, the Javalambre-Photometric Local Universe Survey (J-PLUS) provides an unprecedented multicolor view of the local Universe. The third data release (DR3) covers 3,192 deg$^2$ and contains 47.4 million objects. However, the
Externí odkaz:
http://arxiv.org/abs/2404.16567
Autor:
Albert, Raymundo, Galarza, Cecilia G.
The matrix pencil method (MPM) is a well-known technique for estimating the parameters of exponentially damped sinusoids in noise by solving a generalized eigenvalue problem. However, in several cases, this is an ill-conditioned problem whose solutio
Externí odkaz:
http://arxiv.org/abs/2404.11413
Autor:
Hansen, Terese T., Simon, Joshua D., Li, Ting S., Sharkey, Domani, Ji, Alexander P., Thompson, Ian B., Reggiani, Henrique M., Galarza, Jhon Yana
The growing number of Milky Way satellites detected in recent years has introduced a new focus for stellar abundance analysis. Abundances of stars in satellites have been used to probe the nature of these systems and their chemical evolution. However
Externí odkaz:
http://arxiv.org/abs/2403.13060
Autor:
Galarza, Jhon Yana, Ferreira, Thiago, Lorenzo-Oliveira, Diego, Simon, Joshua D., Reggiani, Henrique, Piro, Anthony L., Butler, R. Paul, Netto, Yuri, Valio, Adriana, Ciardi, David R., Safonov, Boris
Among Neptunian mass exoplanets ($20-50$ M$_\oplus$), puffy hot Neptunes are extremely rare, and their unique combination of low mass and extended radii implies very low density ($\rho < 0.3$~g~cm$^{-3}$). Over the last decade, only a few puffy plane
Externí odkaz:
http://arxiv.org/abs/2403.06240