Article
Astronomy & Astrophysics
Michael Kretschmer, Avishai Dekel, Romain Teyssier
Summary: Observed 'cold' galactic discs at high redshifts may be formed by intense accretion of co-planar, co-rotating gas via cold cosmic-web streams. These discs survive for about 5 orbital periods and are then disrupted by mergers and counter-rotating streams.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Jeremy Fensch, Frederic Bournaud
Summary: The gas mass fraction in high-redshift galaxies plays a crucial role in driving the evolution of giant clumps, with lower gas fractions leading to short-lived clumps and higher gas fractions resulting in long-lived clumps. This suggests that the gas fraction is the primary physical parameter determining the violent disc instabilities and evolution of giant clumps in high-redshift galaxies.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
Annagrazia Puglisi, Ugne Dudzeviciute, Mark Swinbank, Steven Gillman, Alfred L. Tiley, Richard G. Bower, Michele Cirasuolo, Luca Cortese, Karl Glazebrook, Chris Harrison, Edo Ibar, Juan Molina, Danail Obreschkow, Kyle A. Oman, Matthieu Schaller, Francesco Shankar, Ray M. Sharples
Summary: We present the first results from the KMOS Ultra-deep Rotation Velocity Survey (KURVS), which examines the outer rotation curves and dark matter content of 22 star-forming galaxies at z similar to 1.5. Using Hα emission, we analyze individual rotation curves to a radius of 4 times the effective radius, finding that most curves are flat or rising between three and six disc scale radii. Our measurements suggest a declining dark matter fraction with increasing stellar mass and stellar mass surface density. The tension with high stellar mass surface density observations indicates a need to reassess baryonic processes in the most massive galaxies.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
G. C. Jones, D. Vergani, M. Romano, M. Ginolfi, Y. Fudamoto, M. Bethermin, S. Fujimoto, B. C. Lemaux, L. Morselli, P. Capak, P. Cassata, A. Faisst, O. Le Fevre, D. Schaerer, J. D. Silverman, Lin Yan, M. Boquien, A. Cimatti, M. Dessauges-Zavadsky, E. Ibar, R. Maiolino, F. Rizzo, M. Talia, G. Zamorani
Summary: The study investigated high-redshift (z > 4) galaxies using the ALPINE survey, with a focus on kinematic types. Through quantitative analysis, 29 high-mass galaxies were classified into a subset of the star-forming main-sequence, including rotators, mergers, and dispersion-dominated systems. The comparison of rotation curves and dynamical mass profiles revealed high rotational velocities and a variety of rotation curve shapes among the ALPINE rotators.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
Avishai Dekel, Nir Mandelker, Frederic Bournaud, Daniel Ceverino, Yicheng Guo, Joel Primack
Summary: This study investigates the nature of giant clumps in high-z galaxies that experience violent disc instability, distinguishing between long-lived and short-lived clumps. The results show that massive clumps are long-lived and capable of migration.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Michael Kretschmer, Avishai Dekel, Jonathan Freundlich, Sharon Lapiner, Daniel Ceverino, Joel Primack
Summary: In this study, dynamical mass of galaxies is evaluated from kinematic measurements of stars or gas using analytic considerations and cosmological zoom-in simulations. It is found that Jeans or hydrostatic equilibrium is valid for galaxies with larger stellar masses, and a formula for evaluating dynamical mass is proposed.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
Fernanda Roman-Oliveira, Filippo Fraternali, Francesca Rizzo
Summary: The discovery of galaxies with regularly rotating discs at redshifts > 4 challenges existing galaxy formation models, which predict chaotic gas kinematics in the early Universe due to gas accretion, mergers, and efficient feedback. Studies of five highly resolved galaxies at z similar to 4.5 using ALMA observations of the [ C II ] 158 μm emission line reveal that four of them are rotating discs, indicating that early disc formation with dominant rotation is present across different galaxy types.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
E. Parlanti, S. Carniani, A. Pallottini, M. Cignoni, G. Cresci, M. Kohandel, F. Mannucci, A. Marconi
Summary: A study finds that in the first billion years of the Universe, the gas kinematics of high-redshift galaxies are similar to local galaxies, with rotating but turbulent disks.
ASTRONOMY & ASTROPHYSICS
(2023)
Article
Astronomy & Astrophysics
Piyush Sharda, Emily Wisnioski, Mark R. Krumholz, Christoph Federrath
Summary: In this study, the relationship between ionized gas kinematics and gas-phase metallicity gradients in high-redshift galaxies is explored using data from 74 galaxies. The findings suggest a correlation between velocity dispersion and metallicity gradients, with rotation-dominated galaxies showing flat gradients. The analysis highlights the critical role of gas kinematics in shaping metallicity gradients in high-redshift galaxies.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
G. Gururajan, M. Bethermin, P. Theule, J. S. Spilker, M. Aravena, M. A. Archipley, S. C. Chapman, C. De Breuck, A. Gonzalez, C. C. Hayward, Y. Hezaveh, R. Hill, S. Jarugula, K. C. Litke, M. Malkan, D. P. Marrone, D. Narayanan, K. A. Phadke, C. Reuter, J. D. Vieira, D. Vizgan, A. Weiss
Summary: In this study, high-redshift dusty star-forming galaxies were observed to estimate the gas density and radiation field intensity using molecular gas tracers. Lens modeling was performed to reconstruct the kinematics. The cold gas masses of the galaxies were found to be compatible with simple dynamical mass estimates, but with different source kinematics compared to the Milky Way.
ASTRONOMY & ASTROPHYSICS
(2022)
Article
Astronomy & Astrophysics
Kearn Grisdale, Laurence Hogan, Dimitra Rigopoulou, Niranjan Thatte, Miguel Pereira-Santaella, Julien Devriendt, Adrianne Slyz, Ismael Garcia-Bernete, Yohan Dubois, Sukyoung K. Yi, Katarina Kraljic
Summary: By conducting mock observations and analysis, researchers have determined that the HARMONI spectrograph can recover certain physical properties of galaxies, such as star formation rate, dynamical mass, and kinematic structure. They have also found that calculating the dynamical ratio on galaxy scales does not always provide a reliable measure of a galaxy's stability against gravity or act as an indicator of a minor merger.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Alice Concas, Roberto Maiolino, Mirko Curti, Connor Hayden-Pawson, Michele Cirasuolo, Gareth C. Jones, Amata Mercurio, Francesco Belfiore, Giovanni Cresci, Fergus Cullen, Filippo Mannucci, Alessandro Marconi, Michele Cappellari, Claudia Cicone, Yingjie Peng, Paulina Troncoso
Summary: We found evidence of ionized gas outflows in the main-sequence star-forming galaxies, with a higher significance in the most massive galaxies and a negligible role in dwarf galaxies.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Anshu Gupta, Kim-Vy Tran, Trevor Mendel, Anishya Harshan, Ben Forrest, R. L. Davies, Emily Wisnioski, Themiya Nanayakkara, Glenn G. Kacprzak, Lisa J. Kewley
Summary: This paper presents deep K-band spectroscopic observations of galaxies at z = 3 - 4 with composite photometric rest-frame H beta+[O III ] 5007 equivalent widths (EW0) > 600 Å, comparable to the EW of galaxies observed during the epoch of reionization (EoR, z > 6). By stacking the [O III] 5007 emission profiles, evidence of a weak broad component is found, and its strength and velocity width do not change significantly with stellar mass and [O III] 5007 EW0 of the stacked sample. The weak signature of outflows in the EoR analogues may be due to the multiphase nature of supernovae driven outflows or the suppression of winds in the extreme star-forming regime.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Nicolas F. Bouche, Shy Genel, Alisson Pellissier, Cedric Dubois, Thierry Contini, Benoit Epinat, Annalisa Pillepich, Davor Krajnovic, Dylan Nelson, Valentina Abril-Melgarejo, Johan Richard, Leindert Boogaard, Michael Maseda, Wilfried Mercier, Roland Bacon, Matthias Steinmetz, Mark Vogelsberger
Summary: The study reveals a correlation between the specific angular momentum of SFGs and stellar mass, with a significant scatter of the sAM sequence based on the dynamical state. It is suggested that SFGs may undergo a dynamical transformation and lose their sAM before transitioning into a passive state morphologically.
ASTRONOMY & ASTROPHYSICS
(2021)
Article
Astronomy & Astrophysics
Zhihui Li, Charles C. Steidel, Max Gronke, Yuguang Chen, Yuichi Matsuda
Summary: This study presents new spectroscopic observations of Ly alpha Blob 2, revealing extended Ly alpha emission and the presence of a high surface brightness center far from known continuum sources. Radiative transfer models are used to explain the diverse Ly alpha morphologies, indicating outflow-dominated kinematics and a significant correlation between parameter pairs. The results support the scenario of Ly alpha photons being generated by a central powering source and scattering with outflowing H i gas.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
M. Vincenzi, M. Sullivan, A. Moeller, P. Armstrong, B. A. Bassett, D. Brout, D. Carollo, A. Carr, T. M. Davis, C. Frohmaier, L. Galbany, K. Glazebrook, O. Graur, L. Kelsey, R. Kessler, E. Kovacs, G. F. Lewis, C. Lidman, U. Malik, R. C. Nichol, B. Popovic, M. Sako, D. Scolnic, M. Smith, G. Taylor, B. E. Tucker, P. Wiseman, M. Aguena, S. Allam, J. Annis, J. Asorey, D. Bacon, E. Bertin, D. Brooks, D. L. Burke, A. Carnero Rosell, J. Carretero, F. J. Castander, M. Costanzi, L. N. da Costa, M. E. S. Pereira, J. De Vicente, S. Desai, H. T. Diehl, P. Doel, S. Everett, I Ferrero, B. Flaugher, P. Fosalba, J. Frieman, J. Garcia-Bellido, D. W. Gerdes, D. Gruen, G. Gutierrez, S. R. Hinton, D. L. Hollowood, K. Honscheid, D. J. James, K. Kuehn, N. Kuropatkin, O. Lahav, T. S. Li, M. Lima, M. A. G. Maia, J. L. Marshall, R. Miquel, R. Morgan, R. L. C. Ogando, A. Palmese, F. Paz-Chinchon, A. Pieres, A. A. Plazas Malagon, K. Reil, A. Roodman, E. Sanchez, M. Schubnell, S. Serrano, I Sevilla-Noarbe, E. Suchyta, G. Tarle, C. To, T. N. Varga, J. Weller, R. D. Wilkinson
Summary: Cosmological analyses of supernova samples need to consider contamination from different types of supernovae. By analyzing the Dark Energy Survey supernova sample, it is found that the contamination from non-Ia supernovae is between 0.8% and 3.5%, with a classification efficiency of 97.7% to 99.5%. The biases on the dark energy equation-of-state, w, are less than 0.008.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
C. Meldorf, A. Palmese, D. Brout, R. Chen, D. Scolnic, L. Kelsey, L. Galbany, W. G. Hartley, T. M. Davis, A. Drlica-Wagner, M. Vincenzi, J. Annis, M. Dixon, O. Graur, C. Lidman, A. Moller, P. Nugent, B. Rose, M. Smith, S. Allam, D. L. Tucker, J. Asorey, J. Calcino, D. Carollo, K. Glazebrook, G. F. Lewis, G. Taylor, B. E. Tucker, A. G. Kim, H. T. Diehl, M. Aguena, F. Andrade-Oliveira, D. Bacon, E. Bertin, S. Bocquet, D. Brooks, D. L. Burke, J. Carretero, M. Carrasco Kind, F. J. Castander, M. Costanzi, L. N. da Costa, S. Desai, P. Doel, S. Everett, I Ferrero, D. Friedel, J. Frieman, J. Garcia-Bellido, M. Gatti, D. Gruen, J. Gschwend, G. Gutierrez, S. R. Hinton, D. L. Hollowood, K. Honscheid, D. J. James, K. Kuehn, M. March, J. L. Marshall, F. Menanteau, R. Miquel, R. Morgan, F. Paz-Chinchon, M. E. S. Pereira, A. A. Plazas Malagon, E. Sanchez, V Scarpine, I Sevilla-Noarbe, E. Suchyta, G. Tarle, T. N. Varga
Summary: Cosmological analyses with type Ia supernovae often overlook the varying dust properties in host galaxies, resulting in inaccurate conclusions. In this study, we use advanced modeling to characterize the dust parameters of 1100 Dark Energy Survey SN host galaxies and find that host dust has important impacts on SN cosmology, including a wide range of dust law slope R-V, lower R-V in high-stellar mass hosts compared to low-mass hosts, and a significant correlation between the Hubble diagram residuals of red SNe Ia and host R-V. These findings confirm recent predictions based on dust and provide insights into the "mass step" and intrinsic scatter in SN Ia analyses.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
T. Treu, A. Calabro, M. Castellano, N. Leethochawalit, E. Merlin, A. Fontana, L. Yang, T. Morishita, M. Trenti, A. Dressler, C. Mason, D. Paris, L. Pentericci, G. Roberts-Borsani, B. Vulcani, K. Boyett, M. Bradac, K. Glazebrook, T. Jones, D. Marchesini, S. Mascia, T. Nanayakkara, P. Santini, V Strait, E. Vanzella, X. Wang
Summary: Using deep, high-resolution NIRCAM observations, we study the morphology of galaxies during the epoch of reionization and its variation in the rest-frame wavelength range. We find no significant variations in morphology with wavelength and detect signatures of mergers/interactions in a fraction of galaxies. These results suggest that Lyman-break galaxies grow through rapid, galaxy-scale star formation accompanied by the accretion of star-forming clumps and interactions.
ASTROPHYSICAL JOURNAL LETTERS
(2023)
Article
Astronomy & Astrophysics
N. Leethochawalit, M. Trenti, P. Santini, L. Yang, E. Merlin, M. Castellano, A. Fontana, T. Treu, C. Mason, K. Glazebrook, T. Jones, B. Vulcani, T. Nanayakkara, D. Marchesini, S. Mascia, T. Morishita, G. Roberts-Borsani, A. Bonchi, D. Paris, K. Boyett, V Strait, A. Calabro, L. Pentericci, M. Bradac, X. Wang, C. Scarlata
Summary: This study presents the first determination of galaxy properties at 7 < z < 9 based on broadband imaging data from the James Webb Space Telescope/NIRCam. Thirteen galaxies with high signal-to-noise ratio were identified using dropout and photometric redshift selection. The physical properties of these galaxies, including their mass and age, were characterized using a Bayesian spectral energy distribution fitting method. The results demonstrate the potential of JWST in unveiling unprecedented details of galaxy formation in the early universe.
ASTROPHYSICAL JOURNAL LETTERS
(2023)
Article
Astronomy & Astrophysics
Mario Nonino, Karl Glazebrook, Adam J. J. Burgasser, Gianluca Polenta, Takahiro Morishita, Marius Lepinzan, Marco Castellano, Adriano Fontana, Emiliano Merlin, Andrea Bonchi, Diego Paris, Tommaso Treu, Benedetta Vulcani, Xin Wang, Paola Santini, Eros Vanzella, Themiya Nanayakkara, Amata Mercurio, Piero Rosati, Claudio Grillo, Marusa Bradac
Summary: We have discovered a late T-type brown dwarf candidate in JWST NIRCam observations, using the sensitivity of JWST at 4 μm wavelengths and the panchromatic 0.9-4.5 μm coverage of the spectral energy distribution. Comparison with stellar atmospheric models shows that it has a temperature of approximately 650 K and a mass of 0.03 M-?, with an estimated age of 5 Gyr. The candidate is likely to be a thick disk or halo brown dwarf, located at a distance of 570-720 pc perpendicular to the Galactic plane, which highlights the power of JWST in probing the low-mass end of the substellar mass function in the Galactic thick disk and halo.
ASTROPHYSICAL JOURNAL LETTERS
(2023)
Article
Astronomy & Astrophysics
Danilo Marchesini, Gabriel Brammer, Takahiro Morishita, Pietro Bergamini, Xin Wang, Marusa Bradac, Guido Roberts-Borsani, Victoria Strait, Tommaso Treu, Adriano Fontana, Tucker Jones, Paola Santini, Benedetta Vulcani, Ana Acebron, Antonello Calabro, Marco Castellano, Karl Glazebrook, Claudio Grillo, Amata Mercurio, Themiya Nanayakkara, Piero Rosati, Chanita Tubthong, Eros Vanzella
Summary: Understanding how passive galaxies form and the mechanisms that prevent star formation over long timescales is crucial for galaxy evolution. By using JWST-NIRISS grism slitless spectroscopic data, we identified and confirmed two quiescent galaxies at z(spec) = 2.650(-0.006)(+0.004) and -z(spec) = 2.433(-0.016)(+0.032) with stellar masses of ( log M-star/M-?) = 10.59(-0.05)(+0.11) and ( log M-star/M-?) = 10.07(-0.03)(+0.06), respectively (corrected for magnification factors of mu = 2.0 and mu = 2.1). This marks the first spectroscopic confirmation of the existence of low-mass quiescent galaxies at cosmic noon, highlighting the capability of JWST to identify and characterize this elusive population.
ASTROPHYSICAL JOURNAL LETTERS
(2023)
Article
Astronomy & Astrophysics
Helene M. Courtois, Khaled Said, Jeremy Mould, T. H. Jarrett, Daniel Pomarede, Tobias Westmeier, Lister Staveley-Smith, Alexandra Dupuy, Tao Hong, Daniel Guinet, Cullan Howlett, Nathan Deg, Bi-Qing For, Dane Kleiner, Baerbel Koribalski, Karen Lee-Waddell, Jonghwan Rhee, Kristine Spekkens, Jing Wang, O. I. Wong, Frank Bigiel, Albert Bosma, Matthew Colless, Tamara Davis, Benne Holwerda, Igor Karachentsev, Renee C. Kraan-Korteweg, Kristen B. W. McQuinn, Gerhardt Meurer, Danail Obreschkow, Edward Taylor
Summary: The WALLABY pilot survey used ASKAP to form integrated 21-cm Hi line spectra in a different manner than traditional single-dish spectra Tully-Fisher measurements. It is crucial to quantify and understand slight differences in order to maximize the use of upcoming large-scale data. The pilot data consists of 614 galaxy spectra, with 472 of high enough quality for potential distance derivation using the Tully-Fisher relation. The resulting Tully-Fisher distances for the Eridanus, Hydra, Norma, and NGC4636 clusters are 21.5, 53.5, 69.4, and 23.0Mpc, respectively, with uncertainties of 5-10 percent.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Benedetta Vulcani, Tommaso Treu, Antonello Calabro, Jacopo Fritz, Bianca M. Poggianti, Pietro Bergamini, Andrea Bonchi, Kristan Boyett, Gabriel B. Caminha, Marco Castellano, Alan Dressler, Adriano Fontana, Karl Glazebrook, Claudio Grillo, Matthew A. Malkan, Sara Mascia, Amata Mercurio, Emiliano Merlin, Benjamin Metha, Takahiro Morishita, Themiya Nanayakkara, Diego Paris, Guido Roberts-Borsani, Piero Rosati, Namrata Roy, Paola Santini, Michele Trenti, Eros Vanzella, Xin Wang
Summary: We used JWST/NIRCam imaging and MUSE data to study galaxies in the cluster Abell2744 and its surroundings. We found a population of galaxies with red colors in F200W-F444W, even in the field region. These galaxies have normal F115W-F150W colors but are redder than red sequence galaxies in F200W-F444W. Many cluster galaxies show signs of ram pressure stripping, while field galaxies have features resembling interactions and mergers. We hypothesize that these galaxies have dust-enshrouded star formation.
ASTROPHYSICAL JOURNAL LETTERS
(2023)
Article
Astronomy & Astrophysics
Anishya Harshan, Kim-Vy Tran, Anshu Gupta, Glenn G. Kacprzak, Themiya Nanayakkara
Summary: Gas inflow rates in massive galaxies at z >= 2 are influenced by the environment, with satellite galaxies experiencing a decline in inflow rates upon entering cluster haloes. At z = 2, the gas inflow rate of cluster satellite galaxies is determined by their cluster-centric radii, while the gas inflow rate in centre is determined by the host halo mass. This study suggests that the gas accretion inequality between satellite and central galaxies contributes to the starvation of cluster satellite galaxies.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
M. Burak Dogruel, Edward N. Taylor, Michelle Cluver, Francesco D'Eugenio, Anna de Graaff, Matthew Colless, Alessandro Sonnenfeld
Summary: The study aims to quantify the systematic uncertainties in stellar mass estimates made from spectral energy distribution (SED) fitting by using the dynamical mass estimator as an SED-independent check. A statistical model of galaxy properties is constructed, and it is found that the variation in stellar mass is driven by velocity dispersion, Sersic index, and color. Age and dust are the largest sources of uncertainty for quiescent galaxies, while age and metallicity are the leading factors for star-forming galaxies.
ASTROPHYSICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
Stefania Barsanti, Matthew Colless, Francesco D'Eugenio, Sree Oh, Julia J. Bryant, Sarah Casura, Scott M. Croom, Yifan Mai, Andrei Ristea, Jesse van de Sande, Charlotte Welker, Henry R. M. Zovaro
Summary: The activity of central supermassive black holes affects the alignment between galaxy spin axes and cosmic filaments. By analyzing observational data, the study finds that gas and stellar spin-filament alignments are influenced by active galactic nuclei (AGN) and bulge mass, with stellar alignments being more strongly correlated with the black hole mass proxy. Bulge mass is the primary parameter for spin-filament alignments, while black hole activity plays a crucial role in star formation quenching.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Arjun Karki, Varsha P. Kulkarni, Simon Weng, Celine Peroux, Ramona Augustin, Matthew Hayes, Mohammadreza Ayromlou, Glenn G. Kacprzak, J. Christopher Howk, Roland Szakacs, Anne Klitsch, Aleksandra Hamanowicz, Alejandra Fresco, Martin A. Zwaan, Andrew D. Biggs, Andrew J. Fox, Susan Kassin, Harald Kuntschner
Summary: Analyzing 66 well-imaged galaxies, this study investigates the relationship between the morphological and stellar properties of galaxies and their circumgalactic medium (CGM) properties. The findings suggest correlations between CGM properties and star formation rates, galaxy sizes, and emission metallicities.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
P. Armstrong, H. Qu, D. Brout, T. M. Davis, R. Kessler, A. G. Kim, C. Lidman, M. Sako, B. E. Tucker
Summary: As the scale of cosmological surveys increases, the complexity in the analyses also rises, making it difficult to derive the underlying principles. In this paper, a statistically rigorous method is presented to test the consistency of contours produced in cosmological analyses. The results show that while there are some differences between the Pippin pipeline and the approximate Neyman construction, the impact is mitigated when combining with other cosmological probes.
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF AUSTRALIA
(2023)
Article
Astronomy & Astrophysics
T. M. C. Abbott, M. Aguena, A. Alarcon, O. Alves, A. Amon, F. Andrade-Oliveira, J. Annis, B. Ansarinejad, S. Avila, D. Bacon, E. J. Baxter, K. Bechtol, M. R. Becker, B. A. Benson, G. M. Bernstein, E. Bertin, J. Blazek, L. E. Bleem, S. Bocquet, D. Brooks, E. Buckley-Geer, D. L. Burke, H. Camacho, A. Campos, J. E. Carlstrom, A. Carnero Rosell, M. Carrasco Kind, J. Carretero, R. Cawthon, C. Chang, C. L. Chang, R. Chen, A. Choi, R. Chown, C. Conselice, J. Cordero, M. Costanzi, T. Crawford, A. T. Crites, M. Crocce, L. N. da Costa, C. Davis, T. M. Davis, T. de Haan, J. De Vicente, J. DeRose, S. Desai, H. T. Diehl, M. A. Dobbs, S. Dodelson, P. Doel, C. Doux, A. Drlica-Wagner, K. Eckert, T. F. Eifler, F. Elsner, J. Elvin-Poole, S. Everett, W. Everett, X. Fang, I. Ferrero, A. Ferte, B. Flaugher, P. Fosalba, O. Friedrich, J. Frieman, J. Garcia-Bellido, M. Gatti, E. M. George, T. Giannantonio, G. Giannini, D. Gruen, R. A. Gruendl, J. Gschwend, G. Gutierrez, N. W. Halverson, I. Harrison, K. Herner, S. R. Hinton, G. P. Holder, D. L. Hollowood, W. L. Holzapfel, K. Honscheid, J. D. Hrubes, H. Huang, E. M. Huff, D. Huterer, B. Jain, D. J. James, M. Jarvis, T. Jeltema, S. Kent, L. Knox, A. Kovacs, E. Krause, K. Kuehn, N. Kuropatkin, O. Lahav, A. T. Lee, P. -F. Leget, P. Lemos, A. R. Liddle, C. Lidman, D. Luong-Van, J. J. McMahonn, N. MacCrann, M. March, J. L. Marshall, P. Martini, J. McCullough, P. Melchior, F. Menanteau, S. S. Meyer, R. Miquel, L. Mocanu, J. J. Mohr, R. Morgan, J. Muir, J. Myles, T. Natoli, A. Navarro-Alsina, R. C. Nichol, Y. Omori, S. Padin, S. Pandey, Y. Park, F. Paz-Chinchon, M. E. S. Pereira, A. Pieres, A. A. Plazas Malagon, A. Porredon, J. Prat, C. Pryke, M. Raveri, C. L. Reichardt, R. P. Rollins, A. K. Romer, A. Roodman, R. Rosenfeld, A. J. Ross, J. E. Ruhl, E. S. Rykoff, C. Sanchez, E. Sanchez, J. Sanchez, K. K. Schaffer, L. F. Secco, I. Sevilla-Noarbe, E. Sheldon, T. Shin, E. Shirokoff, M. Smith, Z. Staniszewski, A. A. Stark, E. Suchyta, M. E. C. Swanson, G. Tarle, C. To, M. A. Troxel, I. Tutusaus, T. N. Varga, J. D. Vieira, N. Weaverdyck, R. H. Wechsler, J. Weller, R. Williamson, W. L. K. Wu, B. Yanny, B. Yin, Y. Zhang, J. Zuntz
Summary: We present cosmological constraints from the analysis of two-point correlation functions between galaxy positions and galaxy lensing measured in Dark Energy Survey (DES) Year 3 data and measurements of cosmic microwave background (CMB) lensing from the South Pole Telescope (SPT) and Planck. The joint analysis of DES-only two-point functions and DES cross-correlations with CMB lensing yields Omega(m) = 0.344 + 0.030 and S-8 equivalent to sigma(8)(Omega(m)/0.3)(0.5) = 0.773 +/- 0.016. Combining with measurements of the CMB lensing autospectrum, we find omega m = 0.306(-0.021)(+0.018) and S-8 = 0.792 +/- 0.012. The CMB lensing cross-correlations provide consistency tests and suggest possible problems with alternative lens galaxy samples.
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)
