Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Carlos, Marilia"'
Autor:
Mohandasan, Anjana, Milone, Antonino P., Cordoni, Giacomo, Dondoglio, Emanuele, Lagioia, Edoardo P., Legnardi, Maria Vittoria, Ziliotto, Tuila, Jang, Sohee, Marino, Anna F., Carlos, Marilia
Publikováno v:
A&A 681, A42 (2024)
Binary stars play a major role in determining the dynamic evolution of star clusters. We used images collected with the Hubble Space Telescope to study fourteen Magellanic Clouds star clusters that span an age interval between $\sim 0.6$ and $2.1$ Gy
Externí odkaz:
http://arxiv.org/abs/2310.15345
Autor:
Cordoni, Giacomo, Milone, Antonino P., Marino, Anna F., Vesperini, Enrico, Dondoglio, Emanuele, Legnardi, Maria Vittoria, Mohandasan, Anjana, Carlos, Marilia, Lagioia, Edoardo P., Jang, Sohee, Ziliotto, Tuila
Publikováno v:
A&A 672, A29 (2023)
Binary stars play a crucial role in our understanding of the formation and evolution of star clusters and their stellar populations. We use Gaia Data Release 3 to homogeneously analyze 78 Galactic open clusters and the unresolved binary systems they
Externí odkaz:
http://arxiv.org/abs/2302.03685
Autor:
Cordoni, Giacomo, Milone, Antonino P., Marino, Anna F., Cignoni, Michele, Lagioia, Edoardo P., Tailo, Marco, Carlos, Marília, Dondoglio, Emanuele, Jang, Sohee, Mohandasan, Anjana, Legnardi, Maria V.
Publikováno v:
Nature Communications, 13, 4325 (2022)
The origin of young star clusters represents a major challenge for modern stellar astrophysics. While stellar rotation partially explains the colour spread observed along main-sequence turn-offs, i.e. where stars leave the main-sequence after the exh
Externí odkaz:
http://arxiv.org/abs/2208.09467
Autor:
Spina, Lorenzo, Sharma, Parth, Meléndez, Jorge, Bedell, Megan, Casey, Andrew R., Carlos, Marília, Franciosini, Elena, Vallenari, Antonella
Stellar members of binary systems are formed from the same material, therefore they should be chemically identical. However, recent high-precision studies have unveiled chemical differences between the two members of binary pairs composed by Sun-like
Externí odkaz:
http://arxiv.org/abs/2108.12040
Autor:
Dondoglio, Emanuele, Milone, Antonino P., Lagioia, Edoardo P., Marino, Anna F., Tailo, Marco, Cordoni, Giacomo, Jang, Sohee, Carlos, Marilia G.
We exploit multi-band Hubble Space Telescope photometry to investigate multiple populations (MPs) along the red horizontal branches (HBs) and red clumps of fourteen metal-rich Globular Clusters (GCs), including twelve Milky Way GCs and the Magellanic
Externí odkaz:
http://arxiv.org/abs/2011.03283
We determine lithium (Li) abundances for solar twins in the M67 open cluster to add valuable information about the correlation between Li depletion and stellar age and, then, better understand stellar structure and evolution. We use high resolution a
Externí odkaz:
http://arxiv.org/abs/2001.01850
Autor:
Galarza, Jhon Yana, Meléndez, Jorge, Lorenzo-Oliveira, Diego, Valio, Adriana, Reggiani, Henrique, Carlos, Marilia, Ponte, Geisa, Spina, Lorenzo, Haywood, Raphaëlle D., Gandolfi, Davide
Spectroscopic equilibrium allows us to obtain precise stellar parameters in Sun-like stars. It relies on the assumption of the iron excitation and ionization equilibrium. However, several works suggest that magnetic activity may affect chemical abund
Externí odkaz:
http://arxiv.org/abs/1910.01040
We determine magnesium isotopic abundances of metal poor dwarf stars from the galactic halo, to shed light on the onset of asymptotic giant branch (AGB) star nucleossynthesis in the galactic halo and constrain the timescale of its formation. We obser
Externí odkaz:
http://arxiv.org/abs/1804.01280
Autor:
Karakas, Amanda, Lugaro, Maria, Carlos, Marília, Cseh, Borbála, Kamath, Devika, García-Hernández, D. A.
We present new theoretical stellar yields and surface abundances for asymptotic giant branch (AGB) models with a metallicity appropriate for stars in the Small Magellanic Cloud (SMC, $Z= 0.0028$, [Fe/H] $\approx -0.7$). New evolutionary sequences and
Externí odkaz:
http://arxiv.org/abs/1803.02028
Publikováno v:
A&A 587, A100 (2016)
We want to determine the lithium abundances of solar twin stars as a function of stellar age to provide constraints for stellar evolutions models and to investigate whether there is a connection between low Li abundance and the occurrence of planets.
Externí odkaz:
http://arxiv.org/abs/1601.05054