Zobrazeno 1 - 10
of 1 310
pro vyhledávání: '"da Costa, G"'
Autor:
Buder, S., Kos, J., Wang, E. X., McKenzie, M., Howell, M., Martell, S. L., Hayden, M. R., Zucker, D. B., Nordlander, T., Montet, B. T., Traven, G., Bland-Hawthorn, J., De Silva, G. M., Freeman, K. C., Lewis, G. F., Lind, K., Sharma, S., Simpson, J. D., Stello, D., Zwitter, T., Amarsi, A. M., Armstrong, J. J., Banks, K., Beavis, M. A., Beeson, K., Chen, B., Ciucă, I., Da Costa, G. S., de Grijs, R., Martin, B., Nataf, D. M., Ness, M. K., Rains, A. D., Scarr, T., Vogrinčič, R., Wang, Z., Wittenmyer, R. A., Xie, Y., Collaboration, The GALAH
The stars of the Milky Way carry the chemical history of our Galaxy in their atmospheres as they journey through its vast expanse. Like barcodes, we can extract the chemical fingerprints of stars from high-resolution spectroscopy. The fourth data rel
Externí odkaz:
http://arxiv.org/abs/2409.19858
We present detailed abundance results based on UVES high dispersion spectra for 7 very and extremely metal-poor stars in the Large Magellanic Cloud. We confirm that all 7 stars, two of which have [Fe/H] $\leq$ --3.0, are the most metal-poor stars dis
Externí odkaz:
http://arxiv.org/abs/2312.12793
We present results of a search for extremely metal-poor (EMP) stars in the Large Magellanic Cloud, which can provide crucial information about the properties of the first stars as well as on the formation conditions prevalent during the earliest stag
Externí odkaz:
http://arxiv.org/abs/2306.15492
Autor:
Fonseca de Carvalho D, Rodrigues da Costa G, Faria Conforto BAA, Ferreira Pinto M, Ribeiro da Silva M
Publikováno v:
iForest - Biogeosciences and Forestry, Vol 17, Iss 1, Pp 222-228 (2024)
Due to the lack of irrigation management techniques, the application of water in forest nurseries is generally carried out without control, resulting in great waste. This study aimed to develop and evaluate weighing mini-lysimeters (ML) to automate t
Externí odkaz:
https://doaj.org/article/c76f86b07c0e467a8ca0b1e7885e7c0a
We use data from the Magellanic Edges Survey (MagES) in combination with Gaia EDR3 to study the extreme southern outskirts of the Small Magellanic Cloud (SMC), focussing on a field at the eastern end of a long arm-like structure which wraps around th
Externí odkaz:
http://arxiv.org/abs/2210.06657
Autor:
Da Costa, G. S., Bessell, M. S., Nordlander, Thomas, Hughes, Arvind C. N., Buder, Sven, Mackey, A. D., Spitler, Lee R., Zucker, D. B.
The advent of large-scale stellar spectroscopic surveys naturally leads to the implementation of machine learning techniques to isolate, for example, small sub-samples of potentially interesting stars from the full data set. A recent example is the a
Externí odkaz:
http://arxiv.org/abs/2210.05161
Autor:
Parisi, M. C., Gramajo, L. V., Geisler, D., Dias, B., Clariá, J. J., Da Costa, G., Grebel, E. K.
Publikováno v:
A&A 662, A75 (2022)
We aim to analyze the chemical evolution of the Small Magellanic Cloud adding 12 additional clusters to our existing sample having accurate and homogeneously derived metallicities. We are particularly interested in seeing if there is any correlation
Externí odkaz:
http://arxiv.org/abs/2203.06542
We explore the structural and kinematic properties of the outskirts of the Large Magellanic Cloud (LMC) using data from the Magellanic Edges Survey (MagES) and Gaia EDR3. Even at large galactocentric radii ($8^\circ
Externí odkaz:
http://arxiv.org/abs/2203.05450
Autor:
Salgado, C., Da Costa, G. S., Yong, D., Salinas, R., Norris, J. E., Mackey, A. D., Marino, A. F., Milone, A. P.
Using spectra obtained with the VLT/FORS2 and Gemini-S/GMOS instruments we have investigated carbon, nitrogen and sodium abundances in a sample of red giants in the Small Magellanic Cloud cluster Kron 3. The metallicity and luminosity of this cluster
Externí odkaz:
http://arxiv.org/abs/2202.00849
Autor:
Saracino, S., Kamann, S., Guarcello, M. G., Usher, C., Bastian, N., Cabrera-Ziri, I., Gieles, M., Dreizler, S., Da Costa, G. S., Husser, T. -O., Hénault-Brunet, V.
We report the detection of a black hole (NGC 1850 BH1) in the $\sim$100 Myr-old massive cluster NGC~1850 in the Large Magellanic Cloud. It is in a binary system with a main-sequence turn-off star (4.9 $\pm$ 0.4 M${_\odot}$), which is starting to fill
Externí odkaz:
http://arxiv.org/abs/2111.06506