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Akademický článek

Protostellar Chimney Flues: Are Jets and Outflows Lifting Submillimeter Dust Grains from Disks into Envelopes?

Autor: L. Cacciapuoti, L. Testi, L. Podio, C. Codella, A. J. Maury, M. De Simone, P. Hennebelle, U. Lebreuilly, R. S. Klessen, S. Molinari

Publikováno v: The Astrophysical Journal, Vol 961, Iss 1, p 90 (2024)

Low dust opacity spectral indices ( β < 1) measured in the inner envelopes of class 0/I young stellar objects (age ∼10 ^4–5 yr) have been interpreted as the presence of (sub-)millimeter dust grains in these environments. The density conditions a

Externí odkaz: https://doaj.org/article/f2f1f79b974a4b05a83659b516c8ea6c

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Spectral classification of young stars using conditional invertible neural networks I. Introducing and validating the method

Autor: D. E. Kang, V. F. Ksoll, D. Itrich, L. Testi, R. S. Klessen, P. Hennebelle, S. Molinari

Aims. We introduce a new deep learning tool that estimates stellar parameters (such as effective temperature, surface gravity, and extinction) of young low-mass stars by coupling the Phoenix stellar atmosphere model with a conditional invertible neur

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fcd5e40ca7793abb7f614a5e0f84eb78
http://arxiv.org/abs/2304.08398

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Population III X-ray Binaries and their Impact on the Early Universe

Autor: Nina S Sartorio, A Fialkov, T Hartwig, G M Mirouh, R G Izzard, M Magg, R S Klessen, S C O Glover, L Chen, Y Tarumi, D D Hendriks

The first population of X-ray binaries (XRBs) is expected to affect the thermal and ionization states of the gas in the early Universe. Although these X-ray sources are predicted to have important implications for high-redshift observable signals, su

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c0cc384ccd691420171211cdf5130e1d

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Resolved stellar population properties of PHANGS-MUSE galaxies

Publikováno v: Astronomy & Astrophysics. 673:A147

Analyzing resolved stellar populations across the disk of a galaxy can provide unique insights into how that galaxy assembled its stellar mass over its lifetime. Previous work at ~1 kpc resolution has already revealed common features in the mass buil

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aa90824875177252a7201b1ad01aeb08
https://doi.org/10.1051/0004-6361/202245673

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Sub-kiloparsec empirical relations and excitation conditions of HCN and HCO+ J = 3–2 in nearby star-forming galaxies

Publikováno v: Astronomy & Astrophysics. 672:A96

We present new HCN and HCO$^+$ ($J$=3-2) images of the nearby star-forming galaxies (SFGs) NGC 3351, NGC 3627, and NGC 4321. The observations, obtained with the Morita ALMA Compact Array, have a spatial resolution of $\sim$290-440 pc and resolve the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::96a6412cedb07c9f848ea51d0379f984
https://doi.org/10.1051/0004-6361/202244317

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Origin of supermassive black holes in massive metal-poor protoclusters

Autor: D R G Schleicher, B Reinoso, M Latif, R S Klessen, M Z C Vergara, A Das, P Alister, V B Díaz, P A Solar

Publikováno v: MNRAS

While large numbers of supermassive black holes have been detected at z>6, their origin is still essentially unclear. Numerical simulations have shown that the conditions for the classical direct collapse scenario are very restrictive and fragmentati

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5686fe8adee60908fd9d528877ca3ffa

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Linking stellar populations to HII regions across nearby galaxies: I. Constraining pre-supernova feedback from young clusters in NGC1672

Publikováno v: Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, 2022, 662, ⟨10.1051/0004-6361/202243766⟩
A&A

One of the fundamental factors regulating the evolution of galaxies is stellar feedback. However, we still do not have strong observational constraints on the relative importance of the different feedback mechanisms (e.g. radiation, ionised gas press

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::61ed0f2e117ac15543722e53dcf0454b

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The Organization of Cloud-scale Gas Density Structure: High-resolution CO versus 3.6 Î¼m Brightness Contrasts in Nearby Galaxies

Publikováno v: ApJ
The Astrophysical Journal
The Astrophysical Journal, 2021, 913, 16 pp. ⟨10.3847/1538-4357/abf35b⟩
ASTROPHYSICAL JOURNAL

In this paper we examine the factors that shape the distribution of molecular gas surface densities on the 150 pc scale across 67 morphologically diverse star-forming galaxies in the PHANGS-ALMA CO (2-1) survey. Dividing each galaxy into radial bins,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1e792723fb333d6cb6b47fcddd8de4fe

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Gangotri Wave—A High Density Gas Ripple in the Inner Galaxy

Autor: V. S. Veena, P. Schilke, Á. Sánchez-Monge, M. C. Sormani, R. S. Klessen, F. Schuller, D. Colombo, T. Csengeri, M. Mattern, J. S. Urquhart

Publikováno v: Research Notes of the AAS. 6:85

Recently, we reported the discovery of a kpc-scale CO structure in the inner Galaxy which we named the Gangotri wave. The structure is at least 2 kpc in extent and its vertical distribution is wave-like in morphology. The analysis of the velocity dat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ec99e2462ed4fcf4af99da83f1bec232
https://doi.org/10.3847/2515-5172/ac687e

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