Zobrazeno 1 - 10
of 74
pro vyhledávání: '"Schauer, Anna T. P."'
Autor:
Prole, Lewis R., Schauer, Anna T. P., Clark, Paul C., Glover, Simon C. O., Priestley, Felix D., Klessen, Ralf S.
Molecular hydrogen allows cooling in primordial gas, facilitating its collapse into Population III stars within primordial halos. Lyman-Werner (LW) radiation from these stars can escape the halo and delay further star formation by destroying H$_2$ in
Externí odkaz:
http://arxiv.org/abs/2301.00828
Autor:
Schauer, Anna T. P., Boylan-Kolchin, Michael, Colston, Katelyn, Sameie, Omid, Bromm, Volker, Bullock, James S., Wetzel, Andrew
We study how supersonic streaming velocities of baryons relative to dark matter -- a large-scale effect imprinted at recombination and coherent over $\sim 3$ Mpc scales -- affects the formation of dwarf galaxies at $z \gtrsim 5$. We perform cosmologi
Externí odkaz:
http://arxiv.org/abs/2210.12815
The recent discovery of the extremely lensed Earendel object at $z=6.2$ is remarkable in that it is likely a single star or stellar multiple, observed within the first billion years of cosmic history. Depending on its mass, which is still uncertain b
Externí odkaz:
http://arxiv.org/abs/2207.02863
Autor:
Sameie, Omid, Boylan-Kolchin, Michael, Hopkins, Philip F., Wetzel, Andrew, Ma, Xiangcheng, Bullock, James S., El-Badry, Kareem, Quataert, Eliot, Samuel, Jenna, Schauer, Anna T. P., Weisz, Daniel R.
We perform cosmological hydrodynamical simulations to study the formation of proto-globular cluster candidates in progenitors of present-day dwarf galaxies $(M_{\rm vir} \approx 10^{10}\, {\rm M}_\odot$ at $z=0$) as part of the "Feedback in Realistic
Externí odkaz:
http://arxiv.org/abs/2204.00638
Autor:
Magg, Mattis, Reis, Itamar, Fialkov, Anastasia, Barkana, Rennan, Klessen, Ralf S., Glover, Simon C. O., Chen, Li-Hsin, Hartwig, Tilman, Schauer, Anna T. P.
Mapping Cosmic Dawn with 21-cm tomography offers an exciting new window into the era of primordial star formation. However, self-consistent implementation of both the process of star formation and the related 21-cm signal is challenging, due to the m
Externí odkaz:
http://arxiv.org/abs/2110.15948
Autor:
Magg, Mattis, Schauer, Anna T. P., Klessen, Ralf S., Glover, Simon C. O., Tress, Robin G., Jaura, Ondrej
The lack of observations of abundance patterns originating in pair-instability supernovae has been a long-standing problem in relation to the first stars. This class of supernovae is expected to have an abundance pattern with a strong odd-even effect
Externí odkaz:
http://arxiv.org/abs/2110.15372
Autor:
Schauer, Anna T. P., Bromm, Volker, Boylan-Kolchin, Michael, Glover, Simon C. O., Klessen, Ralf S.
The formation of globular clusters and their relation to the distribution of dark matter have long puzzled astronomers. One of the most recently-proposed globular cluster formation channels ties ancient star clusters to the large-scale streaming velo
Externí odkaz:
http://arxiv.org/abs/2108.08318
The influence of streaming velocities and Lyman-Werner radiation on the formation of the first stars
The first stars in the Universe, the so-called Population III stars, form in small dark matter minihaloes with virial temperatures $T_{\rm vir} < 10^{4}$~K. Cooling in these minihaloes is dominated by molecular hydrogen (H$_{2}$), and so Population I
Externí odkaz:
http://arxiv.org/abs/2008.05663
The launch of the James Webb Space Telescope will open up a new window for observations at the highest redshifts, reaching out to z~15. However, even with this new facility, the first stars will remain out of reach, as they are born in small minihalo
Externí odkaz:
http://arxiv.org/abs/2007.02946
We demonstrate a new approach of indirectly constraining both early star and structure formation via mature galaxy clusters at cosmic noon (z~2), using the cluster XLSSC 122 as an example. With the standard Press Schechter formalism, we infer a rapid
Externí odkaz:
http://arxiv.org/abs/2004.08479