Article
Astronomy & Astrophysics
L. Pantoni, A. Lapi, M. Massardi, D. Donevski, A. Bressan, L. Silva, F. Pozzi, C. Vignali, M. Talia, A. Cimatti, T. Ronconi, L. Danese
Summary: This study examines 11 (sub-)millimeter-selected DSFGs in the GOODS-S field with confirmed redshifts, aiming to understand their astrophysical properties and their role in galaxy evolution. The results indicate that these galaxies have stellar mass, star formation rate, and dust content consistent with the galaxy main sequence at a redshift of about 2, with high interstellar dust content and rapid enrichment of the interstellar medium. The study also reveals total and molecular gas content in the galaxies, showing a typical depletion timescale and potential presence of accreting SMBHs.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
Skarleth M. Motino Flores, Tommy Wiklind, Rafael T. Eufrasio
Summary: The study presents a sample of 11 potential local analogs to high redshift galaxies and investigates their dust properties, star formation rates, and histories. It found that 6 of the young galaxies in the sample have the lowest gas-phase metallicities, warmer dust, highest specific SFR, and gas mass fractions.
ASTROPHYSICAL JOURNAL
(2021)
Article
Astronomy & Astrophysics
M. Hamed, F. Pistis, M. Figueira, K. Malek, A. Nanni, V. Buat, A. Pollo, D. Vergani, M. Bolzonella, J. Junais, J. Krywult, T. Takeuchi, G. Riccio, T. Moutard
Summary: By studying star-forming galaxies at intermediate redshifts (0.5 < z < 0.8), we have found that galaxy properties, gas-phase metallicity, and galaxy morphology have significant impacts on the IRX-beta dust attenuation relation. Galaxies with higher metallicities exhibit higher IRX and beta values, while more compact galaxies experience greater attenuation. Additionally, the presence of older stars and higher masses are correlated with the IRX-beta scatter. However, galaxy environments do not significantly affect dust attenuation in this sample.
ASTRONOMY & ASTROPHYSICS
(2023)
Article
Astronomy & Astrophysics
D. Burgarella, J. Bogdanoska, A. Nanni, S. Bardelli, M. Bethermin, M. Boquien, V Buat, A. L. Faisst, M. Dessauges-Zavadsky, Y. Fudamoto, S. Fujimoto, M. Giavalisco, M. Ginolfi, C. Gruppioni, N. P. Hathi, E. Ibar, G. C. Jones, A. M. Koekemoer, K. Kohno, B. C. Lemaux, D. Narayanan, P. Oesch, M. Ouchi, D. A. Riechers, F. Pozzi, M. Romano, D. Schaerer, M. Talia, P. Theule, D. Vergani, G. Zamorani, E. Zucca, P. Cassata
Summary: Star-forming galaxies at high redshifts exhibit low stellar mass and low dust attenuation. By combining infrared and submillimeter emissions and utilizing redshift as a spectrograph, the physical properties of these galaxies were studied to decipher the nature of dust cycle and stellar populations. The study also found redshift evolution in the mass-attenuation relation and in the IRX-beta(FUV) diagram.
ASTRONOMY & ASTROPHYSICS
(2022)
Article
Astronomy & Astrophysics
Jose A. Flores Velazquez, Alexander B. Gurvich, Claude-Andre Faucher-Giguere, James S. Bullock, Tjitske K. Starkenburg, Jorge Moreno, Alexandres Lazar, Francisco J. Mercado, Jonathan Stern, Martin Sparre, Christopher C. Hayward, Andrew Wetzel, Kareem El-Badry
Summary: Understanding the rate at which stars form is essential for studying galaxy formation. Observations and simulations have shown that the star formation rates (SFRs) of galaxies vary significantly over time, affecting the sensitivity of H alpha and far-ultraviolet (FUV) continuum SFR indicators. The best-fitting time scales for H alpha and FUV to measure SFR in galaxies differ, and the ratio of SFRs inferred using H alpha versus FUV can be used to probe the burstiness of star formation in galaxies.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
P. Bonfini, A. Zezas, M. L. N. Ashby, S. P. Willner, A. Maragkoudakis, K. Kouroumpatzakis, P. H. Sell, K. Kovlakas
Summary: The study uses the Star Formation Reference Survey to constrain the mass distribution in nearby star-forming galaxies and measure the integrated luminosity density and total stellar mass density. The results indicate that discs dominate the mass density budget and recent star formation primarily happened in massive systems within the discs.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
Suraj Dhiwar, Kanak Saha, Avishai Dekel, Abhishek Paswan, Divya Pandey, Arianna Cortesi, Mahadev Pandge
Summary: We studied the evolution of L-* elliptical galaxies in terms of their star formation history and environment in the colour-magnitude diagram to understand their quenching process. We selected 1109 L-* galaxies from a sample of 36,500 galaxies based on visual extraction and spectroscopic selection. Among them, 51 elliptical galaxies were selected based on their surface-brightness profile. Most of the red-sequence and green-valley L-* elliptical galaxies have either recently been quenched or are still forming stars, while the blue-cloud L-* elliptical galaxies are showing vigorous star formation. The galaxy colour is correlated with the cosmic-web environment.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
K. Kouroumpatzakis, A. Zezas, A. Maragkoudakis, S. P. Willner, P. Bonfini, M. L. N. Ashby, P. H. Sell, T. H. Jarrett
Summary: This study presents new H alpha photometry for the Star Formation Reference Survey (SFRS) and calibrations of H alpha-based star-formation rates, considering the impact of different correction factors. The research compares SFR estimates derived from different methods, studies the dependence of the radio-to-H alpha emission ratio, and quantifies the correlation between galaxy metallicity and extinction.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
S. Phillipps, S. Bellstedt, M. N. Bremer, R. De Propris, P. A. James, S. Casura, J. Liske, B. W. Holwerda
Summary: The correlation between star-formation rate and stellar mass in galaxies is well known. This study extends this correlation to explore any additional dependence on galaxy surface brightness, a proxy for stellar mass surface density. Using a large sample of low-redshift galaxies, it is found that once the overall mass dependence of star-formation rate is taken into account, there is no evidence for a further dependence on stellar surface density in either sample.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
M. Symeonidis, N. Maddox, M. J. Jarvis, M. J. Michalowski, P. Andreani, D. L. Clements, G. De Zotti, S. Duivenvoorden, J. Gonzalez-Nuevo, E. Ibar, R. J. Ivison, L. Leeuw, M. J. Page, R. Shirley, M. W. L. Smith, M. Vaccari
Summary: This study examines the far-infrared (FIR) properties of optically selected QSOs in different redshift ranges and finds that the contribution of AGN to FIR emission increases with AGN power, resulting in a reduction of the 'FIR bump' in average QSO spectral energy distributions. The study also reveals that the mean star formation rates (SFRs) of AGN host galaxies are only dependent on redshift and not on AGN power.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
M. Symeonidis, M. J. Page
Summary: The study shows that the most IR-luminous galaxies are typically powered by AGN, and that the high-luminosity tails of the IR galaxy LF and IR AGN LF converge at different redshifts up to around 2.5. AGN have an impact on the average dust temperatures of galaxies and the shape of the L-IR-T-d(ust) relation.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
I-Da Chiang, Hiroyuki Hirashita, Jeremy Chastenet, Eric W. Koch, Adam K. Leroy, Erik Rosolowsky, Karin M. Sandstrom, Amy Sardone, Jiayi Sun, Thomas G. Williams
Summary: We investigated the impact of local environmental factors, particularly dust surface density (sigma(dust)), dust-to-gas ratio (D/G), and interstellar radiation field, on the dust temperature. By analyzing multiwavelength observations in 46 nearby galaxies, we found that the dust temperature is strongly correlated with the surface density of star formation rate (sigma(SFR)), which is indicative of radiation from young stars. Additionally, the dust temperature decreases as D/G increases, suggesting stronger dust shielding at higher D/G values. Our findings are consistent with the predictions of our proposed analytical model.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
V. Picouet, S. Arnouts, E. Le Floc'h, T. Moutard, K. Kraljic, O. Ilbert, M. Sawicki, G. Desprez, C. Laigle, D. Schiminovich, S. de la Torre, S. Gwyn, H. J. McCracken, Y. Dubois, R. Dave, S. Toft, J. R. Weaver, M. Shuntov, O. B. Kauffmann
Summary: Star formation rate functions (SFRFs) provide a snapshot of the distribution of star formation rates (SFRs) in galaxies at different epochs. In this study, we develop a new method to predict the SFR of galaxies by estimating their infrared luminosity from their rest-frame UV/optical colors. We apply this method to the HSC-CLAUDS survey and provide reliable measurements of the SFR functions in the high- and low-SFR regimes up to z = 2. We compare our results with previous observations and hydrodynamical simulations.
ASTRONOMY & ASTROPHYSICS
(2023)
Article
Astronomy & Astrophysics
Jorge Moreno, Paul Torrey, Sara L. Ellison, David R. Patton, Connor Bottrell, Asa F. L. Bluck, Maan H. Hani, Christopher C. Hayward, James S. Bullock, Philip F. Hopkins, Lars Hernquist
Summary: The study shows that close encounters in interacting galaxies significantly increase cool gas budgets, leading to enhanced star formation. Additionally, galaxies with high global star formation rates experience intense nuclear star formation enhancement in the central region, while those with low global SFR are suppressed in the central region.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
R. M. Gonzalez Delgado, J. E. Rodriguez-Martin, L. A. Diaz-Garcia, A. de Amorim, R. Garcia-Benito, G. Martinez-Solaeche, P. A. A. Lopes, M. Maturi, E. Perez, R. Cid Fernandes, A. Cortesi, A. Finoguenov, E. R. Carrasco, A. Hernan-Caballero, L. R. Abramo, J. Alcaniz, N. Benitez, S. Bonoli, A. J. Cenarro, D. Cristobal-Hornillos, J. M. Diego, R. A. Dupke, A. Ederoclite, J. A. Fernandez-Ontiveros, C. Lopez-Sanjuan, A. Marin-Franch, I Marquez, C. Mendes de Oliveira, M. Moles, I Pintos, L. Sodre, K. Taylor, J. Varela, H. Vazquez Ramio, J. M. Vilchez
Summary: This study demonstrates the potential of J-PAS in detecting and characterizing galaxy populations within galaxy clusters, showing that the proportion of red and quiescent galaxies in clusters increases with stellar mass, while the abundance excess of transition galaxies is modest at lower stellar masses.
ASTRONOMY & ASTROPHYSICS
(2022)
Article
Astronomy & Astrophysics
Minjie Fan, Jue Wang, Vinay L. L. Kashyap, Thomas C. M. Lee, David A. A. van Dyk, Andreas Zezas
Summary: The study introduces a novel nonparametric event list segmentation algorithm that divides the field of view into distinct emission components, allowing identification of diffuse emission and estimation of its surface brightness in the presence of superposed point sources. They construct a graph from the Voronoi tessellation of photon locations and grow segments using a seeded region growing approach. The method can accurately identify irregularly shaped low-surface-brightness emission structures and point-like sources comparable to typical X-ray data.
ASTRONOMICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
R. K. Cochrane, C. C. Hayward, D. Angles-Alcazar, R. S. Somerville
Summary: There is growing interest in using radiative transfer codes to predict observable fluxes for simulated galaxies through post-processing cosmological simulations. However, this method can be slow and requires assumptions when the simulations do not resolve the interstellar medium. Zoom-in simulations offer better resolution of the interstellar medium and stellar-gas geometry but have limited statistics due to the computational cost.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Alexander B. Gurvich, Jonathan Stern, Claude-Andre Faucher-Giguere, Philip F. Hopkins, Andrew Wetzel, Jorge Moreno, Christopher C. Hayward, Alexander J. Richings, Zachary Hafen
Summary: Recent observations and simulations have shown that galaxies undergo substantial evolution from clumpy, irregular, and bursty star formation rates (SFRs) to rotationally supported and steady thin discs similar to those seen in the local Universe. In this study, we analyze three FIRE-2 simulated galaxies with similar mass to the Milky Way at redshift z = 0 to better understand the progenitors of local disc galaxies. We find that all three galaxies transition from bursty to steady SFRs between redshifts z = 0.5 and z = 0.8, coinciding with the emergence of a rotationally supported interstellar medium (ISM) in less than 1 billion years (Gyr).
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Rongjun Huang, Andrew J. Battisti, Kathryn Grasha, Elisabete da Cunha, Claudia del P. Lagos, Sarah K. Leslie, Emily Wisnioski
Summary: Previous studies have shown that the normalization and scatter of the galaxy 'main sequence' (MS), the relation between star formation rate (SFR) and stellar mass (M-*), evolves over cosmic time. We use MAGPHYS + photo-z to fit the UV to radio spectral energy distributions of 12380 galaxies in the COSMOS field at 0.5 < z < 3.0 and quantify the effect on the observed MS scatter. We find that the intrinsic MS scatter for our sample of galaxies is 1.4 to 2.6 times larger than the measurement uncertainty.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Hiddo S. B. Algera, Hanae Inami, Pascal A. Oesch, Laura Sommovigo, Rychard J. Bouwens, Michael W. Topping, Sander Schouws, Mauro Stefanon, Daniel P. Stark, Manuel Aravena, Laia Barrufet, Elisabete da Cunha, Pratika Dayal, Ryan Endsley, Andrea Ferrara, Yoshinobu Fudamoto, Valentino Gonzalez, Luca Graziani, Jacqueline A. Hodge, Alexander P. S. Hygate, Ilse de Looze, Themiya Nanayakkara, Raffaella Schneider, Paul P. van der Werf
Summary: This study uses ALMA observations to investigate the dust content of high-redshift galaxies. The results show that dust-obscured star formation contributes approximately 30% in the interstellar medium of high-redshift galaxies, indicating its continued importance even in the epoch of reionization.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Kung-Yi Su, Greg L. Bryan, Zoltan Haiman, Rachel S. Somerville, Christopher C. Hayward, Claude-Andre Faucher-Giguere
Summary: The role of mechanical feedback in the early growth of black holes in high-redshift galaxies is investigated through high-resolution simulations. It is found that the jet forms a cocoon and its width follows a scaling relation. This feedback mechanism effectively regulates the accretion rate of the black hole.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
K. Kouroumpatzakis, A. Zezas, E. Kyritsis, S. Salim, J. Svoboda
Summary: This study establishes the relationship between infrared emission and extinction and the age of stellar populations in galaxies and provides related calibrations. The results show robust estimations with reduced scatter and biases over a wide range of interstellar medium and stellar masses.
ASTRONOMY & ASTROPHYSICS
(2023)
Article
Astronomy & Astrophysics
Devina Misra, Konstantinos Kovlakas, Tassos Fragos, Margaret Lazzarini, Simone S. Bavera, Bret D. Lehmer, Andreas Zezas, Emmanouil Zapartas, Zepei Xing, Jeff J. Andrews, Aaron Dotter, Kyle A. Rocha, Philipp M. Srivastava, Meng Sun
Summary: This study investigates the effects of various physical assumptions on the synthetic X-ray luminosity functions (XLFs) of high-mass X-ray binaries (HMXBs). The results show an overabundance of XRBs with black hole accretors in certain model parameter combinations, leading to a discrepancy with observations. However, assumptions regarding circularization and criteria for the formation of an X-ray-emitting accretion disk around wind-accreting black holes can reduce this deviation.
ASTRONOMY & ASTROPHYSICS
(2023)
Article
Astronomy & Astrophysics
Camilla Pacifici, Kartheik G. Iyer, Bahram Mobasher, Elisabete da Cunha, Viviana Acquaviva, Denis Burgarella, Gabriela Calistro Rivera, Adam C. Carnall, Yu-Yen Chang, Nima Chartab, Kevin C. Cooke, Ciaran Fairhurst, Jeyhan Kartaltepe, Joel Leja, Katarzyna Malek, Brett Salmon, Marianna Torelli, Alba Vidal-Garcia, Mederic Boquien, Gabriel G. Brammer, Michael J. I. Brown, Peter L. Capak, Jacopo Chevallard, Chiara Circosta, Darren Croton, Iary Davidzon, Mark Dickinson, Kenneth J. Duncan, Sandra M. Faber, Harry C. Ferguson, Adriano Fontana, Yicheng Guo, Boris Haeussler, Shoubaneh Hemmati, Marziye Jafariyazani, Susan A. Kassin, Rebecca L. Larson, Bomee Lee, Kameswara Bharadwaj Mantha, Francesca Marchi, Hooshang Nayyeri, Jeffrey A. Newman, Viraj Pandya, Janine Pforr, Naveen Reddy, Ryan Sanders, Ekta Shah, Abtin Shahidi, Matthew L. Stevans, Dian Puspita Triani, Krystal D. Tyler, Brittany N. Vanderhoof, Alexander de la Vega, Weichen Wang, Madalyn E. Weston
Summary: The study analyzes the uncertainties in spectral energy distribution (SED) modeling and fitting in galaxy evolution. By applying 14 commonly used SED-fitting codes, the study finds agreement on stellar mass but discrepancies in star formation rate (SFR) and dust-attenuation results. The impact of modeling assumptions on derived parameters is explored, and the contribution of modeling choices to uncertainties is measured (0.1 dex in stellar mass, 0.3 dex in SFR, and 0.3 mag in dust attenuation).
ASTROPHYSICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
Marta Frias Castillo, Jacqueline Hodge, Matus Rybak, Paul van der Werf, Ian Smail, Jack E. Birkin, Chian-Chou Chen, Scott C. Chapman, Ryley Hill, Claudia del P. Lagos, Cheng-Lin Liao, Elisabete da Cunha, Gabriela Calistro Rivera, Jianhang Chen, E. F. Jimenez-Andrade, Eric J. Murphy, Douglas Scott, A. M. Swinbank, Fabian Walter, R. J. Ivison, Helmut Dannerbauer
Summary: We present the initial results of a survey targeting the CO(J = 1-0) transition in submillimeter-selected star-forming galaxies at high redshift. Out of the 30 galaxies observed, we detect CO(1-0) emission in 11 targets, with three tentative detections. The total molecular gas masses, gas mass fractions, and depletion times of our sources are in good agreement with predictions from the SHARK semi-analytical model.
ASTROPHYSICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
Sean T. Linden, Aaron S. Evans, Lee Armus, Jeffrey A. Rich, Kirsten L. Larson, Thomas Lai, George C. Privon, U. Vivian, Hanae Inami, Thomas Bohn, Yiqing Song, Loreto Barcos-Munoz, Vassilis Charmandaris, Anne M. Medling, Sabrina Stierwalt, Tanio Diaz-Santos, Torsten Boker, Paul van der Werf, Susanne Aalto, Philip Appleton, Michael J. I. Brown, Christopher C. Hayward, Justin H. Howell, Kazushi Iwasawa, Francisca Kemper, David T. Frayer, David Law, Matthew A. Malkan, Jason Marshall, Joseph M. Mazzarella, Eric J. Murphy, David Sanders, Jason Surace
Summary: We used the NIRCam of the James Webb Space Telescope to investigate the young massive star cluster population in the luminous infrared galaxy VV 114. We identified 374 compact YMC candidates and found that 20% of them are undetected at optical wavelengths. The discovery of hidden sources in VV 114 significantly increased the number of young star clusters and confirmed a steep age distribution slope for all the massive star clusters.
ASTROPHYSICAL JOURNAL LETTERS
(2023)
Article
Astronomy & Astrophysics
Sarah Wellons, Claude-Andre Faucher-Giguere, Philip F. Hopkins, Eliot Quataert, Daniel Angles-Alcazar, Robert Feldmann, Christopher C. Hayward, Dusan Keres, Kung-Yi Su, Andrew Wetzel
Summary: This study investigates the effects of different physical models for supermassive black holes (SMBHs) on galaxy formation simulations. Cosmic rays accelerated by SMBHs play an important role in many models, but there are qualitative errors and the growth of BH mass is closely related to galaxy quenching.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
L. Barrufet, P. A. Oesch, R. Bouwens, H. Inami, L. Sommovigo, H. Algera, E. da Cunha, M. Aravena, P. Dayal, A. Ferrara, Y. Fudamoto, V Gonzalez, L. Graziani, A. P. S. Hygate, I de Looze, T. Nanayakkara, A. Pallottini, R. Schneider, M. Stefanon, M. Topping, P. van der Werf
Summary: In this study, the first observational infrared luminosity function (IRLF) in the Epoch of Reionization (EoR) was measured using ALMA. It was found that a considerable amount of dust exists in the population of galaxies at z=6.4-7.7. By comparing with simulations, it was also revealed that the infrared luminosity contributes at least 10% to the cosmic star formation rate density during the reionization epoch. Therefore, the presence of dust is abundant in the EoR and future ALMA and JWST observations may unveil more dusty galaxies.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
A. P. S. Hygate, J. A. Hodge, E. da Cunha, M. Rybak, S. Schouws, H. Inami, M. Stefanon, L. Graziani, R. Schneider, P. Dayal, R. J. Bouwens, R. Smit, R. A. A. Bowler, R. Endsley, V Gonzalez, P. A. Oesch, D. P. Stark, H. S. B. Algera, M. Aravena, L. Barrufet, A. Ferrara, Y. Fudamoto, J. H. A. Hilhorst, I De Looze, T. Nanayakkara, A. Pallottini, D. A. Riechers, L. Sommovigo, M. W. Topping, P. van der Werf
Summary: We present the observations of REBELS25, a massive and morphologically complex ULIRG at high redshift, and determine its properties such as mass and star formation rate. Our findings suggest that REBELS25 has the potential to evolve into a high-mass quiescent galaxy.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Anshu Gupta, Ravi Jaiswar, Vicente Rodriguez-Gomez, Ben Forrest, Kim-Vy Tran, Themiya Nanayakkara, Anishya Harshan, Elisabete da Cunha, Glenn G. Kacprzak, Michaela Hirschmann
Summary: EELGs, which have extreme emission lines, are commonly found in the early Universe. This study used deep imaging data from the JWST to investigate companion galaxies around EELGs. The results indicate that EELGs are more likely to be experiencing interactions or mergers, and the increased merger rate might be the cause of the overabundance of EELGs at z > 6.
ASTROPHYSICAL JOURNAL LETTERS
(2023)