Article
Astronomy & Astrophysics
Christopher C. Lovell, Stephen M. Wilkins, Peter A. Thomas, Matthieu Schaller, Carlton M. Baugh, Giulio Fabbian, Yannick Bahe
Summary: This study introduces a new method using a machine learning framework to explore the relationship between galaxies and dark matter halos in the universe, enabling predictions of galaxy properties at a lower computational cost. By training the model in different environments, researchers can infer the bias of galaxy evolution, allowing application to larger volumes of dark-matter-only simulations.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Federica Loiacono, Roberto Decarli, Carlotta Gruppioni, Margherita Talia, Andrea Cimatti, Gianni Zamorani, Francesca Pozzi, Lin Yan, Brian C. Lemaux, Dominik A. Riechers, Olivier Le Fevre, Matthieu Bethermin, Peter Capak, Paolo Cassata, Andreas Faisst, Daniel Schaerer, John D. Silverman, Sandro Bardelli, Mederic Boquien, Sandra Burkutean, Miroslava Dessauges-Zavadsky, Yoshinobu Fudamoto, Seiji Fujimoto, Michele Ginolfi, Nimish P. Hathi, Gareth C. Jones, Yana Khusanova, Anton M. Koekemoer, Guilaine Lagache, Lori M. Lubin, Marcella Massardi, Pascal Oesch, Michael Romano, Livia Vallini, Daniela Vergani, Elena Zucca
Summary: The study presents the first [C II] 158 μm luminosity function at z ~ 5, identifying 8 out of 14 detections as [C II] lines and 4 as [C II] candidates. The star-formation rate density estimation shows that the clustered sample has a SFRD 10 times higher than UV-selected galaxies, while the field sample has a SFRD 1.6 times higher compared to current estimates from UV surveys.
ASTRONOMY & ASTROPHYSICS
(2021)
Article
Astronomy & Astrophysics
Daniella M. Roberts, Anna M. Nierenberg, Annika H. G. Peter
Summary: Research indicates that the satellite populations of low-mass host galaxies remain mostly unchanged through evolution, and there is a weak dependence between host stellar mass and the number of satellites per host. Additionally, new satellite luminosity function measurements are consistent with Lamda cold dark matter predictions.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
J. R. Weaver, I. Davidzon, S. Toft, O. Ilbert, H. J. Mccracken, K. M. L. Gould, C. K. Jespersen, C. Steinhardt, C. D. P. Lagos, P. L. Capak, C. M. Casey, N. Chartab, A. L. Faisst, C. C. Hayward, J. S. Kartaltepe, O. B. Kauffmann, A. M. Koekemoer, V. Kokorev, C. Laigle, D. Liu, A. Long, G. E. Magdis, C. J. R. Mcpartland, B. Milvang-Jensen, B. Mobasher, A. Moneti, Y. Peng, D. B. Sanders, M. Shuntov, A. Sneppen, F. Valentino, L. Zalesky, G. Zamorani
Summary: This study presents constraints on the shape and evolution of the galaxy stellar mass function (SMF) and the cosmic stellar mass density. The authors utilize data from the COSMOS survey to infer the intrinsic galaxy stellar mass function, its key parameters evolution, and the cosmic stellar mass density. The results indicate a smooth and monotonic evolution in the galaxy SMF since z = 7.5, in agreement with previous studies. Furthermore, a sustained agreement is found between the stellar and dark matter halo mass functions. Star formation in massive halos may be more efficient at early times.
ASTRONOMY & ASTROPHYSICS
(2023)
Article
Astronomy & Astrophysics
Jenifer S. Millard, Benedikt Diemer, Stephen A. Eales, Haley L. Gomez, Rosemary Beeston, Matthew W. L. Smith
Summary: Investigating galactic dust mass evolution through empirical methods and cosmological simulations reveals discrepancies between observed evolution and model predictions, possibly due to cosmic evolution in dust grain properties or limitations in the model, particularly in relation to the fast evolution of neutral gas content in galaxies in the simulation.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
M. Sharma, M. J. Page, A. A. Breeveld
Summary: We present measurements of the rest-frame ultraviolet (UV) galaxy luminosity function (LF) and luminosity density (LD) in the wavelength of far-UV (1500 angstrom) for a redshift range of z = 0.6- 1.2. Our results suggest an increase in star formation activity between redshifts z = 0.7 and z = 1. We also find that the faint-end slope at z = 0.7 is shallower compared to previous studies.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
M. J. Page, T. Dwelly, I McHardy, N. Seymour, K. O. Mason, M. Sharma, J. A. Kennea, T. P. Sasseen, J. Rawlings, A. A. Breeveld, I Ferreras, N. S. Loaring, D. J. Walton, M. Symeonidis
Summary: The study utilized UV imaging data from the XMM-Newton Optical Monitor telescope to measure UV luminosity functions of galaxies with redshifts between 0.6 and 1.2, supplemented by optical and infrared imaging for photometric redshifts. The results indicated that the characteristic absolute magnitude M * is brighter for the redshift range 0.8 < z < 1.2 compared to 0.6 < z < 0.8.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
Nicha Leethochawalit, Michele Trenti, Takahiro Morishita, Guido Roberts-Borsani, Tommaso Treu
Summary: Having accurate completeness functions is crucial for determining the ultraviolet luminosity functions. Different methods have been used to determine completeness functions, and it has been found that considering completeness as a function of both input and output magnitude is the most robust approach. Comparisons between mock observations and real images indicate that uncertainties in the UVLFs are predominantly influenced by small number statistics and cosmic variance.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
L. Bisigello, C. Gruppioni, A. Feltre, F. Calura, F. Pozzi, C. Vignali, L. Barchiesi, G. Rodighiero, M. Negrello
Summary: This study aims to generate simulated catalogues based on Herschel IR luminosity functions of different galaxy populations to consider different populations of galaxies and active galactic nuclei (AGN) consistently. The proposed simulation tool allows for reproducing the number densities of infrared-detected galaxies and is in agreement with observational data from UV to far-IR wavelengths.
ASTRONOMY & ASTROPHYSICS
(2021)
Article
Astronomy & Astrophysics
A. R. Calette, Aldo Rodriguez-Puebla, Vladimir Avila-Reese, Claudia del P. Lagos
Summary: By seeding semi-empirical galaxies into a large N-body dark matter simulation, we extend the local stellar galaxy-(sub)halo connection to the atomic hydrogen component. The relation between the atomic hydrogen mass and dark matter mass is not a monotonic increasing function, but rather increases within a certain mass range before slightly decreasing. The bivariate distribution of atomic hydrogen and dark matter mass is broad and bimodal, impacted by the initial conditions.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
L. Wang, F. Gao, P. N. Best, K. Duncan, M. J. Hardcastle, R. Kondapally, K. Malek, I McCheyne, J. Sabater, T. Shimwell, C. Tasse, M. Bonato, M. Bondi, R. K. Cochrane, D. Farrah, G. Guerkan, P. Haskell, W. J. Pearson, I Prandoni, H. J. A. Roettgering, D. J. B. Smith, M. Vaccari, W. L. Williams
Summary: By cross-matching Herschel sources and LOFAR sources, this study provides the most accurate estimate to date of the bright end of the infrared luminosity functions and the abundance of hyperluminous IR galaxies with IR luminosities >10(13)L(circle dot). The results show a good agreement with previous studies and indicate that the population of HLIRGs has surface densities with variations due to a combination of the applied flux limit and cosmic variance.
ASTRONOMY & ASTROPHYSICS
(2021)
Article
Astronomy & Astrophysics
Kyle A. Oman
Summary: This study presents the most precise determination to date of the number density of extragalactic 21-cm radio sources. The analysis is based on the H I velocity width function (H I WF) of 21,827 sources from the Arecibo Legacy Fast ALFA survey. The results show that the shape of the H I WF is remarkably similar in different sky regions, indicating its potential as a stable tracer of the mass function of dark matter haloes and as a constraint on cosmological models.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
O. B. Kauffmann, O. Ilbert, J. R. Weaver, H. J. McCracken, B. Milvang-Jensen, G. Brammer, I Davidzon, O. Le Fevre, D. Liu, B. Mobasher, A. Moneti, M. Shuntov, S. Toft, C. M. Casey, J. S. Dunlop, J. S. Kartaltepe, A. M. Koekemoer, D. B. Sanders, L. Tresse
Summary: This paper presents a new search for galaxies with redshifts greater than or equal to 7.5 using the COSMOS2020 photometric catalogues. The study explores the challenges of detecting galaxies during the reionisation epoch and utilizes deep imaging surveys to identify the brightest galaxies at high redshifts. The authors constructed catalogues covering an area of 1.4 deg(2) using UltraVISTA data, Spitzer/IRAC COSMOS images, and Hyper-Suprime-Cam Subaru Strategic Program data. They identified new candidate sources as well as confirmed previously published candidates. By comparing different photometric redshift estimates, the authors tested the reliability of their candidates. The study also examined the evolution of the galaxy UV luminosity function in three redshift bins centered at z = 8, 9, and 10.
ASTRONOMY & ASTROPHYSICS
(2022)
Article
Astronomy & Astrophysics
Daisuke Toyouchi, Kohei Inayoshi, Miho N. Ishigaki, Nozomu Tominaga
Summary: Recent observations of active galactic nuclei (AGNs) have shown a high Fe II/Mg II line-flux ratio in their broad-line regions, nearly independent of redshift up to z greater than or similar to 6. The high flux ratio requires rapid production of iron in galactic nuclei to reach an abundance ratio of [Fe/Mg] greater than or similar to 0.2 as high as those observed in matured galaxies in the local universe. We propose a possible explanation of rapid iron enrichment in AGNs by massive star formation that follows a top-heavy initial mass function (IMF) with a power-law index of Gamma larger than the canonical value of Gamma = -2.35 for a Salpeter IMF. Taking into account metal production channels from different types of SNe, we find that the high value of [Fe/Mg] greater than or similar to 0.2 requires the IMF to be characterized with Gamma greater than or similar to -1 (Gamma greater than or similar to 0) and a high-mass cutoff at M-max similar or equal to 100-150 M-circle dot (M-max greater than or similar to 250 M-circle dot). Given the conditions, core-collapse SNe with M-* greater than or similar to 70 M-circle dot and pair-instability SNe give a major contribution for iron enrichment. Such top-heavy stellar IMFs would be a natural consequence from mass growth of stars formed in dense AGN discs under Bondi-like gas accretion that is regulated by feedback at M-* greater than or similar to 10 M-circle dot. The massive stellar population formed in AGN discs also leave stellar-mass black hole remnants, whose mergers associated with gravitational-wave emission account for at most 10 per cent of the merger rate inferred from LIGONirgo observations to simultaneously explain the high [Fe/Mg] ratio with metal ejection.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
S. Santos, D. Sobral, J. Butterworth, A. Paulino-Afonso, B. Ribeiro, E. da Cunha, J. Calhau, A. A. Khostovan, J. Matthee, P. Arrabal Haro
Summary: The study reveals a correlation between Ly alpha luminosity and rest-frame UV, with a higher L-Ly alpha cut leading to a decrease in the number density of faint M-UV and low M-star LAEs. Additionally, the UV and SMF of LAEs slowly approach the measurements of continuum-selected galaxies, indicating a key role of LAEs in the epoch of reionization.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
S. Dye, S. A. Eales, H. L. Gomez, G. C. Jones, M. W. L. Smith, E. Borsato, A. Moss, L. Dunne, J. Maresca, A. Amvrosiadis, M. Negrello, L. Marchetti, E. M. Corsini, R. J. Ivison, G. J. Bendo, T. Bakx, A. Cooray, P. Cox, H. Dannerbauer, S. Serjeant, D. Riechers, P. Temi, C. Vlahakis
Summary: We have conducted the first spatially resolved investigation of the multiphase interstellar medium (ISM) at high redshift, revealing a rotationally-supported gas disc and evidence of a nearby perturber in a strongly lensed submillimeter galaxy. Our estimations suggest the existence of a high-mass reservoir of cool gas that might have been missed in previous studies. The conflict between our mass estimates and dynamical mass estimates in the literature could be due to lower gas-to-tracer ratios in high-redshift galaxies.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Geray S. Karademir, Edward N. Taylor, Chris Blake, Ivan K. Baldry, Sabine Bellstedt, Maciej Bilicki, Michael J. I. Brown, Michelle E. Cluver, Simon P. Driver, Hendrik Hildebrandt, Benne W. Holwerda, Andrew M. Hopkins, Jonathan Loveday, Steven Phillipps, Angus H. Wright
Summary: In this study, a new experimental design using clustering-based redshift inference was used to measure the evolving galaxy luminosity function (GLF). The results showed a relatively constant power-law slope for a certain range of magnitudes and a sharp increase thereafter, which may be attributed to the dominance of globular clusters.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
S. A. Urquhart, G. J. Bendo, S. Serjeant, T. Bakx, M. Hagimoto, P. Cox, R. Neri, M. Lehnert, C. Sedgwick, C. Weiner, H. Dannerbauer, A. Amvrosiadis, P. Andreani, A. J. Baker, A. Beelen, S. Berta, E. Borsato, V Buat, K. M. Butler, A. Cooray, G. De Zotti, L. Dunne, S. Dye, S. Eales, A. Enia, L. Fan, R. Gavazzi, J. Gonzalez-Nuevo, A. Harris, C. N. Herrera, D. Hughes, D. Ismail, R. Ivison, S. Jin, B. Jones, K. Kohno, M. Krips, G. Lagache, L. Marchetti, M. Massardi, H. Messias, M. Negrello, A. Omont, I Perez-Fournon, D. A. Riechers, D. Scott, M. W. L. Smith, F. Stanley, Y. Tamura, P. Temi, C. Vlahakis, A. Weiss, P. van der Werf, A. Verma, C. Yang, A. J. Young
Summary: This study presents spectroscopic measurements for 71 galaxies associated with 62 of the brightest high-redshift submillimetre sources. They obtained reliable redshift measurements for all sources using ALMA and the 12-m Array, and found that the CO(1-0) luminosity is significantly elevated relative to the line-width to CO(1-0) luminosity scaling relation, suggesting the presence of lensing magnification.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
J. P. Crossett, S. L. McGee, T. J. Ponman, M. E. Ramos-Ceja, M. J. Brown, B. J. Maughan, A. S. G. Robotham, J. P. Willis, C. Wood, J. Bland-Hawthorn, S. Brough, S. P. Driver, B. W. Holwerda, A. M. Hopkins, J. Loveday, M. S. Owers, S. Phillipps, M. Pierre, K. A. Pimbblet
Summary: By studying 232 optical spectroscopically selected groups, it can be observed that X-ray overluminous groups are more dynamically evolved compared to X-ray underluminous groups, having more time to develop a luminous intragroup medium and build the mass of the central galaxy.
ASTRONOMY & ASTROPHYSICS
(2022)
Article
Astronomy & Astrophysics
Jacob Maresca, Simon Dye, Aristeidis Amvrosiadis, George Bendo, Asantha Cooray, Gianfranco De Zotti, Loretta Dunne, Stephen Eales, Cristina Furlanetto, Joaquin Gonzalez-Nuevo, Michael Greener, Robert Ivison, Andrea Lapi, Mattia Negrello, Dominik Riechers, Stephen Serjeant, Monica Tergolina, Julie Wardlow
Summary: In this paper, we present modelling of high-resolution imaging of seven strong gravitationally lensed galaxies using ALMA. By careful modelling of visibilities, we determine the mass profiles of the lensing galaxies and investigate the intrinsic properties and morphologies of the lensed submillimetre sources.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
M. J. Doherty, J. E. Geach, R. J. Ivison, K. M. Menten, A. M. Jacob, J. Forbrich, S. Dye
Summary: The detection of ground state rotational emission of ammonia in a gravitationally lensed star-bursting galaxy suggests that the gas responsible for NH3 emission is tracing the global molecular reservoir, with high density pockets. The ratio of NH3 emission to total infrared luminosity in this galaxy is comparable to that observed in star-forming regions in the Milky Way, indicating similarities in the nature of star formation between extreme starbursts in the early Universe and Galactic star-forming regions.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
U. Sureshkumar, A. Durkalec, A. Pollo, M. Bilicki, M. E. Cluver, S. Bellstedt, D. J. Farrow, J. Loveday, E. N. Taylor, J. Bland-Hawthorn
Summary: Investigated the correlation between mid-infrared properties of galaxies and their environment, finding that galaxy clustering is dependent on absolute magnitude and redshift. Also observed a correlation between mid-IR luminosities and environmental properties of galaxies. Explored how different IR galaxy luminosity selections influence clustering measurements.
ASTRONOMY & ASTROPHYSICS
(2023)
Article
Astronomy & Astrophysics
F. Stanley, B. M. Jones, D. A. Riechers, C. Yang, S. Berta, P. Cox, T. J. L. C. Bakx, A. Cooray, H. Dannerbauer, S. Dye, D. H. Hughes, R. J. Ivison, S. Jin, M. Lehnert, R. Neri, A. Omont, P. van der Werf, A. Weiss
Summary: We conducted a survey of CO(1-0) emission in 14 infrared luminous dusty star-forming galaxies (DSFGs) at 2 < z < 4 using the NSF's JVLA. All sources were detected in (CO)-C-12(1-0), with an angular resolution of about 1''. We measured CO luminosities and molecular gas masses, and based on radiative transfer modeling, determined densities and temperatures of the molecular gas. In addition, we found a wide range of CO spectral line energy distributions (SLEDs) and revealed the importance of CO(1-0) observations in combination with higher -J transitions.
ASTROPHYSICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
Maria B. Stone, Clare F. Wethers, Roberto de Propris, Jari Kotilainen, Nischal Acharya, Benne W. Holwerda, Jonathan Loveday, Steven Phillipps
Summary: We investigate the impact of active galaxies on their neighbors by studying the properties of galaxies in the vicinity of Type I quasars. Our findings indicate that there are no significant differences in properties such as neighbor count, morphology, stellar mass, star formation rates, and star formation history between the neighbors of quasars and those around inactive galaxies of the same mass and redshift. This suggests that quasar activity does not significantly affect its neighboring galaxies, implying that nuclear activity is more likely triggered by internal processes.
ASTROPHYSICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
Pankaj C. Bhambhani, Ivan K. Baldry, Sarah Brough, Alexander D. Hill, M. A. Lara-Lopez, J. Loveday, B. W. Holwerda
Summary: Galaxy populations are characterized by a bimodal distribution of colors, with blue star-forming and red quiescent subpopulations. The relative abundance of these subpopulations varies with stellar mass and environment. In this study, we investigate the impact of environment using different types of measurements. We analyze a sample of 49,911 galaxies from the Galaxy And Mass Assembly survey and find that the fraction of red galaxies changes with the environment at a fixed stellar mass. The local environmental measures have a stronger influence on the red fraction compared to the large-scale geometric environment measures. Moreover, combining different environmental densities does not fully explain the observed variation in the red fraction, suggesting that different measures contain distinct information.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Ajay Dev, Simon P. Driver, Martin Meyer, Sambit Roychowdhury, Jonghwan Rhee, Adam R. H. Stevens, Claudia del P. Lagos, Joss Bland-Hawthorn, Barbara Catinella, A. M. Hopkins, Jonathan Loveday, Danail Obreschkow, Steven Phillipps, Aaron S. G. Robotham
Summary: In this study, we determine the relation between atomic hydrogen (HI) and halo mass using data from the Arecibo Legacy Fast ALFA survey at the location of optically selected groups from the Galaxy And Mass Assembly (GAMA) survey. We find that the HI mass of the groups generally increases with halo mass, ranging from 1.3% at 10^11.6 solar masses to 0.4% at 10^13.7 solar masses. Our results are consistent with previous studies and mock observations.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Multidisciplinary Sciences
J. E. Geach, E. Lopez-Rodriguez, M. J. Doherty, Jianhang Chen, R. J. Ivison, G. J. Bendo, S. Dye, K. E. K. Coppin
Summary: This study reports the detection of linearly polarized thermal emission from dust grains in a strongly lensed and intrinsically luminous galaxy that is forming stars at a rate more than 1,000 times that of the Milky Way. The observations support the presence of a 5-kiloparsec-scale ordered magnetic field with a strength of around 500 μG or lower, oriented parallel to the molecular gas disk, indicating the rapid formation of such structures in galaxies early in cosmic history.
Article
Astronomy & Astrophysics
G. J. Bendo, S. A. Urquhart, S. Serjeant, T. Bakx, M. Hagimoto, P. Cox, R. Neri, M. D. Lehnert, H. Dannerbauer, A. Amvrosiadis, P. Andreani, A. J. Baker, A. Beelen, S. Berta, E. Borsato, V Buat, K. M. Butler, A. Cooray, G. De Zotti, L. Dunne, S. Dye, S. Eales, A. Enia, L. Fan, R. Gavazzi, J. Gonzalez-Nuevo, A. Harris, C. N. Herrera, D. H. Hughes, D. Ismail, B. M. Jones, K. Kohno, M. Krips, G. Lagache, L. Marchetti, M. Massardi, H. Messias, M. Negrello, A. Omont, I Perez-Fournon, D. A. Riechers, D. Scott, M. W. L. Smith, F. Stanley, Y. Tamura, P. Temi, P. van der Werf, A. Verma, C. Vlahakis, A. Weiss, C. Yang, A. J. Young
Summary: We present ALMA continuum images of 85 fields selected from Herschel observations. Most of the fields are expected to contain gravitationally lensed or hyperluminous infrared galaxies. We found that about half of the Herschel sources were resolved into multiple ALMA sources and the brightest Herschel sources corresponded to individual ALMA sources. The results suggest that the color temperatures of the sources do not vary significantly with redshift and the dust emissivity indices are largely consistent.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Jonghwan Rhee, Martin Meyer, Attila Popping, Sabine Bellstedt, Simon P. Driver, Aaron S. G. Robotham, Matthew Whiting, Ivan K. Baldry, Sarah Brough, Michael J. Brown, John D. Bunton, Richard Dodson, Benne W. Holwerda, Andrew M. Hopkins, Barbel S. Koribalski, Karen Lee-Waddell, Angel R. Lopez-Sanchez, Jon Loveday, Elizabeth Mahony, Sambit Roychowdhury, Kristof Rozgonyi, Lister Staveley-Smith
Summary: We present early science results from the Deep Investigation of Neutral Gas Origins (DINGO) HI survey conducted with the Australian Square Kilometre Array Pathfinder (ASKAP). The analysis of DINGO early science data, obtained using ASKAP subarrays, shows direct detections of six known and one new sources at z < 0.01. The study also investigates the HI gas content of galaxies in different galaxy colours and examines environmental impacts on the HI gas content.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Proceedings Paper
Instruments & Instrumentation
Roelof S. de Jong, Olga Bellido-Tirado, Joar G. Brynnel, Aida Ezzati Amini, Steffen Frey, Christine Fuesslein, Miklos Gaebler, Domenico Giannone, Diana Johl, Silke Kuba, Ulrike Lemke, Genoveva Micheva, Allar Saviauk, Matthias Steinmetz, Jakob C. Walcher, Roland Winkler, Karin Lind, Jonathan Loveday, Sofia Feltzing, Richard McMahon, Vincenzo Mainieri, Jean-Francois Pirard, Thomas Bensby, Maria Bergemann, Cristina Chiappini, Norbert Christlieb, Maria-Rosa L. Cioni, Johan Comparat, Simon Driver, Isobel Hook, Mike Irwin, Jean-Paul Kneib, Jochen Liske, Andrea Merloni, Ivan Minchev, Johan Richard, Else Starkenburg, Mark Sullivan, Clare Worley, Wolfgang Gaessler, Florence Laurent, Johan Pragt, Alban Remillieux, Florian Rothmaier, Scott Smedley, Ingo Stilz, Nicholas Walton, David M. Alexander, Ross Church, Scott Croom, Luke J. Davies, Caroline Heneka, Nikolay Kacharov, Joerg Knoche, Georges Kordopatis, Mirko Krumpe, Sarah Martell, Peder Norberg, Ingrid Pelisoli, Sanjib Sharma, Jesper Storm, Elmo Tempel
Summary: 4MOST is a new high-multiplex, wide-field spectroscopic survey facility being constructed for ESO's 4m-VISTA telescope in Chile. It has a large field of view and a high multiplex fibre positioner, enabling both high-resolution and low-resolution optical spectroscopy.
GROUND-BASED AND AIRBORNE INSTRUMENTATION FOR ASTRONOMY IX
(2022)