Zobrazeno 1 - 10
of 152 158
pro vyhledávání: '"GTC"'
Autor:
Shao, Yi-Xuan, Zhou, Ping, Li, Xiang-Dong, Zhang, Bin-Bin, Castro-Tirado, Alberto Javier, Wang, Pei, Li, Di, Zhang, Zeng-Hua, Zhang, Zi-Jian, Hu, You-Dong, Pandey, Shashi B.
The Galactic magnetar SGR J1935+2154 has undergone another outburst since 2022 October 10. We present the results of searching for an optical/NIR counterpart of SGR J1935+2154 before and during this outburst. No counterpart was detected at the magnet
Externí odkaz:
http://arxiv.org/abs/2410.00635
Autor:
Cazzoli, S., Hernández-García, L., Márquez, I., Masegosa, J., Bruni, G., Panessa, F., Bassani, L.
Some giant radio galaxies selected at X-rays with an AGN show signs of a restarted nuclear activity. One object in this peculiar class is Mrk1498, a giant low-frequency double radio source that shows extended emission in [OIII]. This emission is like
Externí odkaz:
http://arxiv.org/abs/2409.07534
Autor:
Cooper, W. J., Jones, H. R. A., Smart, R. L., Folkes, S. L., Caballero, J. A., Marocco, F., Ortiz, M. C. Gálvez, Burgasser, A. J., Kirkpatrick, J. D., Sarro, L. M., Burningham, B., Cabrera-Lavers, A., Tremblay, P. E., Reylé, C., Lodieu, N., Zhang, Z. H., Cook, N. J., Faherty, J. F., García-Álvarez, D., Montes, D., Pinfield, D. J., Rajpurohit, A. S., Shi, J.
As part of our comprehensive, ongoing characterisation of the low-mass end of the main sequence in the Solar neighbourhood, we used the OSIRIS instrument at the 10.4 m Gran Telescopio Canarias to acquire low- and mid-resolution (R$\approx$300 and R$\
Externí odkaz:
http://arxiv.org/abs/2409.03706
Autor:
Simpson, Jordan A., Linares, Manuel, Casares, Jorge, Shahbaz, Tariq, Sen, Bidisha, Camilo, Fernando
We present GTC-OSIRIS phase-resolved optical spectroscopy of three compact binary MSPs, or `spiders': PSR J1048+2339, PSR J1810+1744, and (for the first time) PSR J1908+2105. For the companion in each system, the temperature is traced throughout its
Externí odkaz:
http://arxiv.org/abs/2408.11099
Autor:
Bandyopadhyay, Avrajit, Ezzeddine, Rana, Prieto, Carlos Allende, Aria, Nima, Shah, Shivani P., Beers, Timothy C., Frebel, Anna, Hansen, Terese T., Holmbeck, Erika M., Placco, Vinicius M., Roederer, Ian U., Sakari, Charli M.
Publikováno v:
The Astrophysical Journal Supplement , 2024, Volume 274, Number 2, Page 39
Understanding the abundance pattern of metal-poor stars and the production of heavy elements through various nucleosynthesis processes offers crucial insights into the chemical evolution of the Milky Way, revealing primary sites and major sources of
Externí odkaz:
http://arxiv.org/abs/2408.03731
Graph Neural Networks (GNNs) have emerged as the most powerful weapon for various graph tasks due to the message-passing mechanism's great local information aggregation ability. However, over-smoothing has always hindered GNNs from going deeper and c
Externí odkaz:
http://arxiv.org/abs/2403.15520
Autor:
Arroyo-Polonio, Antonio, Kehrig, Carolina, Paramo, Jorge Iglesias, Vílchez, José Manuel, Montero, Enrique Pérez, Puertas, Salva Duarte, Gallego, Jesus, Reverte, Daniel, Lavers, Antonio Cabrera
Publikováno v:
A&A 687, A77 (2024)
This study delves into the intricate kinematic behavior of ionized gas within IZw18, a galaxy known for its remarkably low metallicity and proximity. Leveraging data from MEGARA/GTC, we meticulously analyzed the galaxy's structure and dynamics using
Externí odkaz:
http://arxiv.org/abs/2404.13956
Autor:
Cedrés, Bernabé, De Daniloff, Simon B., Bongiovanni, Ángel, Sánchez-Portal, Miguel, Cerviño, Miguel, Pérez-Martínez, Ricardo, Pérez-García, Ana María, Cepa, Jordi, Lara-López, Maritza A., González-Otero, Mauro, Castillo-Fraile, Manuel, González-Serrano, José Ignacio, Negrete, Castalia Alenka, Padilla-Torres, Camen P., Pintos-Castro, Irene, Povic, Mirjana, Alfaro1, Emilio, Beyoro-Amado, Zeleke, Cruz-González, Irene, de Diego, José A., Martínez, Rocío Navarro, Mancillas, Brisa, Rodríguez, Mónica I., Valtchanov, Iván
In this paper, we revisit the data for the galaxy cluster ZwCl 0024.0+1652 provided by the GLACE survey and study the mass--metallicity function and its relationship with the environment. Here we describe an alternative way to reduce the data from OS
Externí odkaz:
http://arxiv.org/abs/2403.11629
Autor:
Fang, Xuan, Huang, Haomiao, Guerrero, Martin A., Stanghellini, Letizia, Garcia-Benito, Ruben, Lee, Ting-Hui, Zhang, Yong
We report spectroscopic surveys of planetary nebulae (PNe) in the Milky Way and Andromeda (M31), using the 10.4-m Gran Telescopio Canarias (GTC). The spectra are of high quality and cover the whole optical range, mostly from 3650 \r{A} to beyond 1 mi
Externí odkaz:
http://arxiv.org/abs/2402.10415
Autor:
Lomelí-Núñez, Luis, Mayya, Y. D., Rodríguez-Merino, L. H., Ovando, P. A., Alzate, Jairo A., Rosa-González, D., Cuevas-Otahola, B., Bruzual, Gustavo, Cortesi, Arianna, Gómez-González, V. M. A, Escudero, Carlos G.
We here present the results of an analysis of the optical spectroscopy of 42 globular cluster (GC) candidates in the nearby spiral galaxy M81 (3.61~Mpc). The spectra were obtained using the long-slit and MOS modes of the OSIRIS instrument at the 10.4
Externí odkaz:
http://arxiv.org/abs/2401.02519