Article
Astronomy & Astrophysics
Lichen Liang, Robert Feldmann, Christopher C. Hayward, Desika Narayanan, Onur Catmabacak, Dusan Keres, Claude-Andre Faucher-Giguere, Philip F. Hopkins
Summary: The study explores the relationship between infrared excess and UV spectral slope in galaxies, finding that the galaxies in high-resolution cosmological simulations show a similar relation to observed nearby galaxies. It is suggested that variations in the intrinsic UV spectral slope are the primary driver of the scatter in the relationship.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
Elizabeth Cappellazzo, Tayyaba Zafar, Pablo Corcho-Caballero, David Alexander Kann, Angel Lopez-Sanchez, Adeel Ahmad
Summary: This study models the grain-size distributions of dust particles in the environment of a gamma-ray burst afterglow, GRB 180325A. The results suggest that the contribution of iron nanoparticles is insignificant and there is a degeneracy of carbon abundances. Silicates are found to be dominant and graphite contributes to both the 2175 angstrom bump and the ultraviolet extinction. The study also implies the possibility of dust destruction.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Gareth T. Jones, Elizabeth R. Stanway
Summary: Panchromatic analysis of galaxy spectral energy distributions can provide valuable insights into the properties of interstellar dust. This study simultaneously fits ultraviolet, optical, and infrared observations of stacked galaxy subsamples at different redshifts, and finds a linear increase in dust temperature with redshift. However, the findings are inconsistent with some previous analyses and suggest that an energy-balance formalism may not always be applicable in the distant Universe.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
F. Pozzi, F. Calura, Y. Fudamoto, M. Dessauges-Zavadsky, C. Gruppioni, M. Talia, G. Zamorani, M. Bethermin, A. Cimatti, A. Enia, Y. Khusanova, R. Decarli, O. Le Fevre, P. Capak, P. Cassata, A. L. Faisst, L. Yan, D. Schaerer, J. Silverman, S. Bardelli, M. Boquien, D. Narayanan, M. Ginolfi, N. P. Hathi, G. C. Jones, A. M. Koekemoer, B. C. Lemaux, F. Loiacono, R. Maiolino, D. A. Riechers, G. Rodighiero, M. Romano, L. Vallini, D. Vergani, E. Zucca
Summary: This study used ALMA to explore the dust content of high-redshift galaxies for the first time, revealing that UV selection may miss the most dust-rich galaxies. Comparing the observed dust scaling relations with chemical evolution models suggests that ALPINE galaxies are likely not progenitors of disc galaxies, but of intermediate- and low-mass proto-spheroids.
ASTRONOMY & ASTROPHYSICS
(2021)
Article
Astronomy & Astrophysics
Joseph S. W. Lewis, Pierre Ocvirk, Yohan Dubois, Dominique Aubert, Jonathan Chardin, Nicolas Gillet, Emilie Thelie
Summary: In recent years, the study of interstellar dust in the high redshift Universe has become a crucial topic. This paper investigates the impact of dust on high redshift galaxies and cosmic reionization, using a physical model for dust production coupled with a cosmological simulation code. The results show that dust has a significant impact on the observed properties of high redshift galaxies, including a dramatic effect on the bright end of the UV luminosity function and a reduction in the escape of ionizing photons from massive galaxies.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Irene Shivaei, Leindert Boogaard, Tanio Diaz-Santos, Andrew Battisti, Elisabete da Cunha, Jarle Brinchmann, Michael Maseda, Jorryt Matthee, Ana Monreal-Ibero, Themiya Nanayakkara, Gergo Popping, Alba Vidal-Garcia, Peter M. Weilbacher
Summary: This study investigates the connection between the strength of the observed UV 2175 angstrom bump and the Spitzer/MIPS 24 μm photometry using a sample of 86 star-forming galaxies. The results show that the UV bump amplitude is highly correlated with the PAH strength and stellar mass, suggesting the influence of the mass-metallicity relationship on the manifestation of the UV bump feature.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Francesco Ziparo, Andrea Ferrara, Laura Sommovigo, Mahsa Kohandel
Summary: The recent discovery by the James Webb Space Telescope challenges our current understanding of a population of super-early, massive, and evolved galaxies. These galaxies exhibit blue spectra and minimal dust attenuation, which contradicts our current interpretation. To explain this puzzle, two possible solutions are proposed: dust ejection due to radiation pressure or dust segregation with respect to UV-emitting regions. ALMA observations, including the recent non-detection of 88 μm dust continuum in GHZ2, can help differentiate between these two scenarios, favoring dust ejection.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Gareth T. Jones, Elizabeth R. Stanway, Adam C. Carnall
Summary: The choice of stellar population model and dust emission model has an impact on the derived parameters, particularly due to differences in available far-ultraviolet emission for reprocessing. Including a dusty stellar birth cloud component in the dust emission model provides more flexibility in accommodating the stellar population model.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Yen-Hsing Lin, Hiroyuki Hirashita, Peter Camps, Maarten Baes
Summary: The study investigates the origin of dust in high-redshift galaxies and how differences in extinction curves affect dust attenuation properties. It finds factors that steepen and flatten attenuation curves, as well as how different dust sources can be distinguished using the IRX-beta diagram.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
Gergoe Popping, Irene Shivaei, Ryan L. Sanders, Tucker Jones, Alexandra Pope, Naveen A. Reddy, Alice E. Shapley, Alison L. Coil, Mariska Kriek
Summary: We studied the relation between dust-to-gas mass ratio (DTG) and gas-phase metallicity for luminous galaxies at redshift z = 2.1 - 2.5, and compared it with analogous constraints at redshift z = 0. By observing 10 star-forming main-sequence galaxies in this redshift range, we found a correlation between DTG and gas-phase metallicity, providing relevant constraints for galaxy formation models.
ASTRONOMY & ASTROPHYSICS
(2023)
Article
Astronomy & Astrophysics
J. A. Villa-Velez, V Buat, P. Theule, M. Boquien, D. Burgarella
Summary: By conducting a spectral energy distribution fitting analysis on a COSMOS photometric sample, robust estimates of stellar mass, star-formation rate, and dust attenuation were obtained for 182 objects. The study revealed that attenuation increases with stellar mass and emission lines experience greater attenuation compared to continuum emission. Additionally, a positive correlation between star formation rate and [OIII] emission was found after correcting for dust attenuation.
ASTRONOMY & ASTROPHYSICS
(2021)
Article
Astronomy & Astrophysics
Nicholas S. Martis, Danilo M. Marchesini, Adam Muzzin, Chris J. Willott, Marcin Sawicki
Summary: We present a sample of 65 extremely dust-obscured galaxies at 1 < z < 4 from the UltraVISTA DR3 survey. This sample is selected based on dust attenuation measured by UV-MIR spectral energy distribution (SED) modelling, allowing for extreme attenuation levels. Our panchromatic SED modelling reveals that these galaxies have different stellar and dust properties compared to typical submillimetre galaxy (SMG) samples and Herschel sources, despite comparable total infrared luminosities. Morphological analysis suggests that the majority of our sources have a disc-like morphology. We conclude that these heavily obscured galaxies share characteristics with typical star-forming galaxies, forming a distinct population that is not encompassed by dust emission-selected samples.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Ryu Makiya, Hiroyuki Hirashita
Summary: In this study, we investigate the cosmic evolution of interstellar dust using a semi-analytical galaxy formation model and focus on the change in grain size distribution. The model successfully reproduces the relation between dust-to-gas ratio and metallicity in the local Universe and predicts similar grain size distributions to the observed extinction curve of the Milky Way. We also observe a clear correlation between grain size distribution and galaxy properties, showing different characteristics at different evolutionary stages.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
L. Rodriguez-Munoz, G. Rodighiero, P. G. Perez-Gonzalez, M. Talia, I Baronchelli, L. Morselli, A. Renzini, A. Puglisi, A. Grazian, A. Zanella, C. Mancini, A. Feltre, M. Romano, A. Vidal Garcia, A. Franceschini, B. Alcalde Pampliega, P. Cassata, L. Costantin, H. Dominguez Sanchez, N. Espino-Briones, E. Iani, A. Koekemoer, A. Lumbreras-Calle, J. M. Rodriguez-Espinosa
Summary: The research uses a sample of 706 galaxies to study the differential attenuation of the nebular emission, finding a significant positive correlation with UV attenuation and weaker associations with other factors.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Yung Ying Chen, Hiroyuki Hirashita, Wei-Hao Wang, Naomasa Nakai
Summary: Some studies indicate high dust temperatures in high-redshift LBGs, but there is an observational bias yet to be understood. ALMA tends to miss high-T-d objects, even at high total dust luminosity, and the bias related to dust temperatures in UV-selected LBG samples is complex. There is no tendency of high-T-d LBGs being more easily detected in ALMA Band 6.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
J. Michael Burgess, Damien Begue, Jochen Greiner, Dimitrios Giannios, Ana Bacelj, Francesco Berlato
Article
Astronomy & Astrophysics
Robert M. Yates, Bruno M. B. Henriques, Jian Fu, Guinevere Kauffmann, Peter A. Thomas, Qi Guo, Simon D. M. White, Patricia Schady
Summary: The modified version of the L-GALAXIES 2020 model introduces increased direct metal enrichment of the circumgalactic medium by supernovae, enabling it to reproduce observed gas-phase and stellar metallicity radial profiles, mass-metallicity relations, and their evolution. The model also shows differences in metallicity distribution between high-mass and low-mass disc galaxies, potentially due to enrichment mechanisms and accretion. However, the model struggles to replicate the evolution of metallicity over cosmic time and magnesium abundances in the intracluster medium.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
A. M. Nicuesa Guelbenzu, S. Klose, P. Schady, J. Greiner, D. H. Hartmann, L. K. Hunt, B. Magnelli, N. Masetti, M. J. Michalowski, E. Palazzi, A. Rossi, M. Wieringa, B. Stecklum
Summary: The study characterized the host galaxy of short GRB 050709 using MUSE and found strong line emissions, particularly Hα and [OIII] 5007, as well as weak stellar continuum. The results indicated strong internal reddening in the galaxy, leading to the derivation of an extinction-corrected star formation rate based on the Hα line flux.
ASTRONOMY & ASTROPHYSICS
(2021)
Article
Astronomy & Astrophysics
J. Michael Burgess, Ewan Cameron, Dmitry Svinkin, Jochen Greiner
Summary: This study introduces a new statistically proper and robust algorithm for gamma-ray bursts, utilizing a hierarchical Bayesian forward model learned via random Fourier features to estimate the position of GRBs by fitting each detector's time series data with the appropriate Poisson likelihood. The method can robustly estimate the position of a GRB, generating uncertainties that are more precise compared to the classical method, making it a valuable tool for gravitational wave follow-up.
ASTRONOMY & ASTROPHYSICS
(2021)
Article
Astronomy & Astrophysics
J. Greiner, J. Bolmer, R. M. Yates, M. Habouzit, E. Banados, P. M. J. Afonso, P. Schady
Summary: Recent large-scale surveys have revealed about 300 quasi-stellar objects (QSOs) at redshifts above 6, with surprising properties such as very high black hole masses and spatial correlations with surrounding cold gas. The discovery of luminous high-redshift quasars suggests that some black holes likely have high masses at birth and grow efficiently.
ASTRONOMY & ASTROPHYSICS
(2021)
Article
Astronomy & Astrophysics
K. E. Heintz, G. Bjornsson, M. Neeleman, L. Christensen, J. P. U. Fynbo, P. Jakobsson, J-K Krogager, T. Laskar, C. Ledoux, G. Magdis, P. Moller, P. Noterdaeme, P. Schady, A. de Ugarte Postigo, F. Valentino, D. Watson
Summary: A pilot search of CO emission in three H-2-absorbing, long-duration gamma-ray burst host galaxies at z similar to 2-3 using ALMA was conducted, with non-detections reported for all three hosts. Limits on the host molecular gas masses were placed based on metallicity-dependent CO-to-H-2 conversion factors, showing higher limits for hosts with low stellar masses and gas-phase metallicities. The study suggests a metallicity-dependent CO-to-H2 conversion factor may severely underestimate the molecular gas mass for galaxies at z > 1 with M-* < 10(10) M☉.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
A. M. Nicuesa Guelbenzu, S. Klose, P. Schady, K. Belczynski, D. H. Hartmann, L. K. Hunt, M. J. Michalowski
Summary: This study investigates the potential different types of Short-GRB progenitors and examines the star formation activity in the host galaxy of GRB 080905A. The observations reveal strong line emission and dispersed star-forming regions, but ultimately do not identify a likely birthplace for the Short-GRB progenitor.
ASTROPHYSICAL JOURNAL
(2021)
Article
Astronomy & Astrophysics
Bethan Easeman, Patricia Schady, Stijn Wuyts, Robert M. Yates
Summary: Radial metallicity trends provide important indicators of certain physical processes within a galaxy. This paper investigates the central dips in metallicity observed in galaxies and explores whether these are genuine decreases or artifacts of the diagnostic used. The study finds no clear evidence that the dips are caused by changing values of the ionization parameter within galaxies.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
History & Philosophy Of Science
Volker Schoenfelder, Jochen Greiner
Summary: This article summarizes the achievements of the gamma-ray group at the Max-Planck Institute for Extraterrestrial Physics (MPE) over the past 50 years, covering their contributions to gamma-ray astronomy and involvement in various space missions and instrument developments.
EUROPEAN PHYSICAL JOURNAL H
(2021)
Article
Engineering, Aerospace
J. Greiner, U. Laux
Summary: This study introduces a novel compact 4-channel beam splitter based on a combination of dichroic coatings and internal total reflection, similar to the interference double prism invented by Kosters 90 years ago. When used with a rapidly-slewing 50 cm telescope in space, it has the potential to double the number of gamma-ray bursts at high (> 5) redshift within 2 years.
CEAS SPACE JOURNAL
(2022)
Article
Astronomy & Astrophysics
Aleksandra Lesniewska, M. J. Michalowski, P. Kamphuis, K. Dziadura, M. Baes, J. M. Castro Ceron, G. Gentile, J. Hjorth, L. K. Hunt, C. K. Jespersen, M. P. Koprowski, E. Le Floc'h, H. Miraghaei, A. Nicuesa Guelbenzu, D. Oszkiewicz, E. Palazzi, M. Polinska, J. Rasmussen, P. Schady, D. Watson
Summary: The ISM characteristics of the host galaxy of GRB 111005A differ from those of other GRBs and SNe, suggesting that the progenitor of this event was not a very massive star explosion. However, there are subtle irregularities, such as a higher concentration of atomic gas and lower concentration of molecular gas in the SE part of the galaxy, as well as a region with high Hα equivalent width and anomalous continuum and UV emissions. These irregularities may be due to interactions with two nearby galaxies or a past merger.
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
(2022)
Article
Astronomy & Astrophysics
F. Kunzweiler, B. Biltzinger, J. Greiner, J. M. Burgess
Summary: This study presents a new algorithm and automated data analysis pipeline for detecting slowly rising or long-duration transient events in high-energy electromagnetic sky. The algorithm demonstrates high sensitivity and coverage, and during testing on Fermi-GBM data, it successfully detected over 300 untriggered transient signals, one of which was confirmed to originate from a known astrophysical source.
ASTRONOMY & ASTROPHYSICS
(2022)
Article
Astronomy & Astrophysics
R. Szakats, Cs. Kiss, J. L. Ortiz, N. Morales, A. Pal, T. G. Mueller, J. Greiner, P. Santos-Sanz, G. Marton, R. Duffard, P. Sagi, E. Forgacs-Dajka
Summary: The rotational states of dwarf planet-satellite systems in the trans-Neptunian region are influenced by formation conditions and tidal interaction. Observations indicate that the rotation of Eris is tidally locked to its satellite Dysnomia, with a period of 15.8 days. Simulations suggest that Dysnomia must have a relatively large mass and size to slow down Eris's rotation.
ASTRONOMY & ASTROPHYSICS
(2023)