Zobrazeno 1 - 10
of 970
pro vyhledávání: '"ANISH, M."'
Autor:
Barklem, Paul S., Amarsi, Anish M.
Publikováno v:
A&A 689, A100 (2024)
The negative hydrogen ion H$^-$ is, almost without exception, treated in local thermodynamic equilibrium (LTE) in the modelling of F, G, and K stars, where it is the dominant opacity source in the visual spectral region. This assumption rests in prac
Externí odkaz:
http://arxiv.org/abs/2407.19833
Autor:
Bétrisey, Jérôme, Farnir, Martin, Breton, Sylvain N., García, Rafael A., Broomhall, Anne-Marie, Amarsi, Anish M., Kochukhov, Oleg
Publikováno v:
A&A 688, L17 (2024)
Building on the success of previous missions, asteroseismic modelling will play a key role in future space-based missions, such as PLATO, CubeSpec, and Roman. Despite remarkable achievements, asteroseismology has revealed significant discrepancies in
Externí odkaz:
http://arxiv.org/abs/2407.15655
Autor:
Díaz, Luisa F. Rodríguez, Lagae, Cis, Amarsi, Anish M., Bigot, Lionel, Zhou, Yixiao, Børsen-Koch, Víctor Aguirre, Lind, Karin, Trampedach, Regner, Collet, Remo
Publikováno v:
A&A 688, A212 (2024)
Context: Traditional one-dimensional (1D) hydrostatic model atmospheres introduce systematic modelling errors into spectroscopic analyses of FGK-type stars. Aims: We present an updated version of the STAGGER-grid of 3D model atmospheres, and explore
Externí odkaz:
http://arxiv.org/abs/2405.07872
Autor:
Skúladóttir, Ása, Koutsouridou, Ioanna, Vanni, Irene, Amarsi, Anish M., Lucchesi, Romain, Salvadori, Stefania, Aguado, David
The first (Pop III) stars formed only out of H and He and were likely more massive than present-day stars. Massive Pop III stars in the range 140-260 M$_\odot$ are predicted to end their lives as pair-instability supernovae (PISNe), enriching the env
Externí odkaz:
http://arxiv.org/abs/2404.19086
Publikováno v:
A&A 690, A291 (2024)
Deep imaging of galaxy cluster fields have in recent years revealed tens of candidates for gravitationally lensed stars at redshifts $z\approx$ 1-6, and future searches are expected to reveal highly magnified stars from even earlier epochs. Multi-ban
Externí odkaz:
http://arxiv.org/abs/2404.10817
Publikováno v:
2024, J. Phys. B: At. Mol. Opt. Phys., 57, 055003
The lack of reliable atomic data can be a severe limitation in astrophysical modelling, in particular of events such as kilonovae that require information on all neutron-capture elements across a wide range of ionization stages. Notably, the presence
Externí odkaz:
http://arxiv.org/abs/2403.02829
Publikováno v:
BMC Bioinformatics, Vol 25, Iss S2, Pp 1-15 (2024)
Abstract Background Conventional differential gene expression analysis pipelines for non-model organisms require computationally expensive transcriptome assembly. We recently proposed an alternative strategy of directly aligning RNA-seq reads to a pr
Externí odkaz:
https://doaj.org/article/be4eff8e04bf4b17b00e898db06e75f0
Autor:
Zhou, Yixiao, Amarsi, Anish M., Børsen-Koch, Victor Aguirre, Karlsmose, Klara G., Collet, Remo, Nordlander, Thomas
Publikováno v:
A&A 677, A98 (2023)
Three-dimensional radiation-hydrodynamics (3D RHD) simulations of stellar surface convection provide valuable insights into many problems in solar and stellar physics. However, almost all 3D near-surface convection simulations to date are based on so
Externí odkaz:
http://arxiv.org/abs/2307.05403
Accurate and extensive atomic data are essential for spectroscopic analyses of stellar atmospheres and other astronomical objects. We present energy levels, lifetimes, and transition probabilities for neutral nitrogen, the sixth most abundant element
Externí odkaz:
http://arxiv.org/abs/2302.00228
Autor:
Sharda, Piyush, Amarsi, Anish M., Grasha, Kathryn, Krumholz, Mark R., Yong, David, Chiaki, Gen, Roy, Arpita, Nordlander, Thomas
Star formation models predict that the metal-poor initial mass function (IMF) can be substantially different from that observed in the metal-rich Milky Way. This changeover occurs because metal-poor gas clouds cool inefficiently due to their lower ab
Externí odkaz:
http://arxiv.org/abs/2211.05505