☆ 4.2 Article

MARZ: Manual and automatic redshifting software

ASTRONOMY AND COMPUTING (2016)

期刊

ASTRONOMY AND COMPUTING

卷 15, 期 -, 页码 61-71

出版社

ELSEVIER SCIENCE BV

DOI: 10.1016/j.ascom.2016.03.001

关键词

Online; Spectroscopic; Redshift; Software; Marz

类别

Astronomy & Astrophysics Computer Science, Interdisciplinary Applications

资金

Australian Research Council Centre of Excellence for All-sky Astrophysics (CAASTRO) [CE110001020]

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Protocol

Reagent

摘要

The Australian Dark Energy Survey (OzDES) is a 100-night spectroscopic survey underway on the Anglo-Australian Telescope using the fibre-fed 2-degree-field (2dF) spectrograph. We have developed a new redshifting application MARZ with greater usability, flexibility, and the capacity to analyse a wider range of object types than the RUNZ software package previously used for redshifting spectra from 2dF. MARZ is an open-source, client-based, Javascript web-application which provides an intuitive interface and powerful automatic matching capabilities on spectra generated from the AAOmega spectrograph to produce high quality spectroscopic redshift measurements. The software can be run interactively or via the command line, and is easily adaptable to other instruments and pipelines if conforming to the current FITS file standard is not possible. Behind the scenes, a modified version of the AUTOZ cross-correlation algorithm is used to match input spectra against a variety of stellar and galaxy templates, and automatic matching performance for OzDES spectra has increased from 54% (RUNZ) to 91% (MARZ). Spectra not matched correctly by the automatic algorithm can be easily redshifted manually by cycling automatic results, manual template comparison, or marking spectral features. (C) 2016 Elsevier B.V. All rights reserved.

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GOGREEN: A critical assessment of environmental trends in cosmological hydrodynamical simulations at z ≈ 1

Egidijus Kukstas, Michael L. Balogh, Ian G. McCarthy, Yannick M. Bahe, Gabriella De Lucia, Pascale Jablonka, Benedetta Vulcani, Devontae C. Baxter, Andrea Biviano, Pierluigi Cerulo, Jeffrey C. Chan, M. C. Cooper, Ricardo Demarco, Alexis Finoguenov, Andreea S. Font, Chris Lidman, Justin Marchioni, Sean McGee, Adam Muzzin, Julie Nantais, Lyndsay Old, Irene Pintos-Castro, Bianca Poggianti, Andrew M. M. Reeves, Gregory Rudnick, Florian Sarron, Remco van der Burg, Kristi Webb, Gillian Wilson, Howard K. C. Yee, Dennis Zaritsky

Summary: Recent observations have shown that the environmental quenching of galaxies at z ≈ 1 is different from that in the local Universe. However, the physical origin of these differences is still unclear. In this study, we compare three state-of-the-art simulations with observations to gain insight into the evolution of environmental quenching. We find that while the simulations generally reproduce the stellar content of galaxies in the field, they struggle to capture the observed quenching of satellites in the cluster environment.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2023)

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Article Astronomy & Astrophysics

Deep drilling in the time domain with DECam: survey characterization

Melissa L. Graham, Robert A. Knop, Thomas D. Kennedy, Peter E. Nugent, Eric Bellm, Marcio Catelan, Avi Patel, Hayden Smotherman, Monika Soraisam, Steven Stetzler, Lauren N. Aldoroty, Autumn Awbrey, Karina Baeza-Villagra, Pedro H. Bernardinelli, Federica Bianco, Dillon Brout, Riley Clarke, William Clarkson, Thomas Collett, James R. A. Davenport, Shenming Fu, John E. Gizis, Ari Heinze, Lei Hu, Saurabh W. Jha, Mario Juric, J. Bryce Kalmbach, Alex Kim, Chien-Hsiu Lee, Chris Lidman, Mark Magee, Clara E. Martinez-Vazquez, Thomas Matheson, Gautham Narayan, Antonella Palmese, Christopher A. Phillips, Markus Rabus, Armin Rest, Nicolas Rodriguez-Segovia, Rachel Street, A. Katherina Vivas, Lifan Wang, Nicholas Wolf, Jiawen Yang

Summary: This paper presents a new optical imaging survey using the Dark Energy Camera (DECam) on the 4-m Blanco telescope at the Cerro Tololo Inter-American Observatory (CTIO) to study four deep drilling fields (two Galactic and two extragalactic). The survey provides >4000 images covering 21 deg(2), with multiple epochs and filters, and focuses on characterizing and analyzing the detected sources, including faint and fast variable and transient sources. The paper also presents calibrated light curves and discusses preliminary scientific findings in various areas of research.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2023)

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Article Astronomy & Astrophysics

OzDES Reverberation Mapping Program: Hβ lags from the 6-yr survey

U. Malik, R. Sharp, A. Penton, Z. Yu, P. Martini, C. Lidman, B. E. Tucker, T. M. Davis, G. F. Lewis, M. Aguena, S. Allam, O. Alves, F. Andrade-Oliveira, J. Asorey, D. Bacon, E. Bertin, S. Bocquet, D. Brooks, D. L. Burke, A. Carnero Rosell, D. Carollo, M. Carrasco Kind, J. Carretero, M. Costanzi, L. N. da Costa, M. E. S. Pereira, J. De Vicente, S. Desai, H. T. Diehl, P. Doel, S. Everett, I Ferrero, J. Frieman, J. Garcia-Bellido, D. W. Gerdes, D. Gruen, R. A. Gruendl, J. Gschwend, S. R. Hinton, D. L. Hollowood, K. Honscheid, D. J. James, K. Kuehn, J. L. Marshall, J. Mena-Fernandez, F. Menanteau, R. Miquel, R. L. C. Ogando, A. Palmese, F. Paz-Chinchon, A. Pieres, A. A. Plazas Malagon, M. Raveri, M. Rodriguez-Monroy, A. K. Romer, E. Sanchez, V Scarpine, I Sevilla-Noarbe, M. Smith, M. Soares-Santos, E. Suchyta, M. E. C. Swanson, G. Tarle, G. Taylor, D. L. Tucker, N. Weaverdyck, R. D. Wilkinson

Summary: Reverberation mapping measures the relationship between the size of the broad-line region and luminosity of AGN. This study presents reverberation measurements using H beta from the OzDES program, successfully recovering reverberation lags for eight AGN at higher redshifts. The results are consistent with previous measurements and the observed dependence on accretion rate, providing a foundation for future research.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2023)

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Article Astronomy & Astrophysics

Core-collapse supernovae in the Dark Energy Survey: luminosity functions and host galaxy demographics

M. Grayling, C. P. Gutierrez, M. Sullivan, P. Wiseman, M. Vincenzi, L. Galbany, A. Moller, D. Brout, T. M. Davis, C. Frohmaier, O. Graur, L. Kelsey, C. Lidman, B. Popovic, M. Smith, M. Toy, B. E. Tucker, Z. Zontos, T. M. C. Abbott, M. Aguena, S. Allam, F. Andrade-Oliveira, J. Annis, J. Asorey, D. Bacon, E. Bertin, S. Bocquet, D. Brooks, A. Carnero Rosell, D. Carollo, M. Carrasco Kind, J. Carretero, M. Costanzi, L. N. da Costa, M. E. S. Pereira, J. De Vicente, S. Desai, H. T. Diehl, 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, N. Kuropatkin, G. F. Lewis, U. Malik, M. March, F. Menanteau, R. Miquel, R. Morgan, R. L. C. Ogando, A. Palmese, F. Paz-Chinchon, A. Pieres, A. A. Plazas Malagon, M. Rodriguez-Monroy, A. K. Romer, A. Roodman, E. Sanchez, V Scarpine, I Sevilla-Noarbe, E. Suchyta, G. Tarle, C. To, D. L. Tucker, T. N. Varga

Summary: We present the luminosity functions and host galaxy properties of the Dark Energy Survey (DES) core-collapse supernova (CCSN) sample, consisting of 69 Type II and 50 Type Ibc spectroscopically and photometrically confirmed supernovae over a redshift range 0.045 < z < 0.25. Comparing luminosity functions, the DES and ZTF samples of SNe II are brighter than that of LOSS with significances of 3.0 sigma and 2.5 sigma, respectively. We find that the host galaxies of SNe II in DES are on average bluer than in ZTF, despite having consistent stellar mass distributions.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2023)

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Article Astronomy & Astrophysics

WALLABY pre-pilot and pilot survey: The Tully Fisher relation in Eridanus, Hydra, Norma, and NGC4636 fields

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)

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Article Multidisciplinary Sciences

The nature of an ultra-faint galaxy in the cosmic dark ages seen with JWST

Guido Roberts-Borsani, Tommaso Treu, Wenlei Chen, Takahiro Morishita, Eros Vanzella, Adi Zitrin, Pietro Bergamini, Marco Castellano, Adriano Fontana, Karl Glazebrook, Claudio Grillo, Patrick L. Kelly, Emiliano Merlin, Themiya Nanayakkara, Diego Paris, Piero Rosati, Lilan Yang, Ana Acebron, Andrea Bonchi, Kit Boyett, Marusa Bradac, Gabriel Brammer, Tom Broadhurst, Antonello Calabro, Jose M. Diego, Alan Dressler, Lukas J. Furtak, Alexei V. Filippenko, Alaina Henry, Anton M. Koekemoer, Nicha Leethochawalit, Matthew A. Malkan, Charlotte Mason, Amata Mercurio, Benjamin Metha, Laura Pentericci, Justin Pierel, Steven Rieck, Namrata Roy, Paola Santini, Victoria Strait, Robert Strausbaugh, Michele Trenti, Benedetta Vulcani, Lifan Wang, Xin Wang, Rogier A. Windhorst

Summary: In the early universe, sources of ultraviolet photons played a crucial role in ionizing intergalactic hydrogen, making the universe transparent to UV radiation. Fainter galaxies that are surrounded by neutral gas were believed to dominate the photon budget. By using the James Webb Space Telescope and gravitational lensing, the ultra-faint galaxy JD1 was spectroscopically confirmed at a redshift of z = 9.79, showing a compact and complex morphology with low stellar mass and subsolar metallicity.

NATURE (2023)

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Article Astronomy & Astrophysics

The PAndAS View of the Andromeda Satellite System. IV. Global Properties

Amandine Doliva-Dolinsky, Nicolas F. Martin, Zhen Yuan, Alessandro Savino, Daniel R. Weisz, Annette M. N. Ferguson, Rodrigo A. Ibata, Stacy Y. Kim, Geraint F. Lewis, Alan W. McConnachie, Guillaume F. Thomas

Summary: We built a statistical framework to infer the global properties of the satellite system of the Andromeda galaxy (M31) using the properties of individual dwarf galaxies in a specific survey. This framework helped us determine the slope of the luminosity function, the spatial density distribution, and the size-luminosity relation of the dwarf galaxies. We found that there are still many faint or distant dwarf galaxies yet to be discovered around Andromeda.

ASTROPHYSICAL JOURNAL (2023)

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Article Astronomy & Astrophysics

Detection of the cosmological time dilation of high-redshift quasars

Geraint F. Lewis, Brendon J. Brewer

Summary: A Bayesian-based analysis of 190 cosmologically distant quasars, photometrically observed over two decades, has revealed the long-expected presence of cosmic time dilation owing to the expansion of space imprinted on their variability.

NATURE ASTRONOMY (2023)

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Article Astronomy & Astrophysics

Probing the consistency of cosmological contours for supernova cosmology

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)

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Article Astronomy & Astrophysics

Joint analysis of Dark Energy Survey Year 3 data and CMB lensing from SPT and Planck. III. Combined cosmological constraints

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.

PHYSICAL REVIEW D (2023)

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Article Astronomy & Astrophysics

Spiral-Elliptical automated galaxy morphology classification from telescope images

M. J. Baumstark, G. Vinci

Summary: The classification of galaxy morphologies is important for studying hierarchical structure formation theories. Traditional manual visual classification cannot cope with the large influx of data, leading to the proposal of crowdsourced visual classification and automated computational methods. This study develops two novel galaxy morphology statistics and simplifies existing image statistics, demonstrating their accuracy and effectiveness.

ASTRONOMY AND COMPUTING (2024)

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