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Multi-Modal Image Fusion (MMIF) aims to combine images from different modalities to produce fused images, retaining texture details and preserving significant information. Recently, some MMIF methods incorporate frequency domain information…

Computer Vision and Pattern Recognition · Computer Science 2026-02-05 Yixin Zhu , Long Lv , Pingping Zhang , Xuehu Liu , Tongdan Tang , Feng Tian , Weibing Sun , Huchuan Lu

We present an improved version of FIT3D, a fitting tool for the analysis of the spectroscopic properties of the stellar populations and the ionized gas derived from moderate resolution spectra of galaxies. FIT3D is a tool developed to…

False-positive emission-line detections bias our understanding of astronomical sources; for example, falsely identifying $z\sim3-4$ passive galaxies as $z>10$ galaxies leads to incorrect number counts and flawed tests of cosmology. In this…

Spatially-resolved information of gas-phase emission provided by integral field units (IFUs) are allowing us to perform a new generation of emission-line surveys, based on large samples of HII regions and full two-dimensional coverage. Here…

Cosmology and Nongalactic Astrophysics · Physics 2012-08-28 F. F. Rosales-Ortega , S. F. Sánchez , A. I. Díaz

In this study we use Integral Field Spectroscopic (IFS) observations for one of the closest galaxy to us, the grand design spiral IC 342, to derive physical properties of HII regions at sub-kpc scales. This IFS data represents, to our…

Far-infrared (FIR) emission lines are a powerful tool to investigate the properties of the interstellar medium, especially in high-redshift galaxies, where ALMA observations have provided unprecedented information. Interpreting such data…

Astrophysics of Galaxies · Physics 2020-09-28 Alessandro Lupi , Andrea Pallottini , Andrea Ferrara , Stefano Bovino , Stefano Carniani , Livia Vallini

We present a suite of IDL routines to interactively run GALFIT whereby the various surface brightness profiles (and their associated parameters) are represented by regions, which the User is expected to place. The regions may be saved…

Instrumentation and Methods for Astrophysics · Physics 2011-10-07 R. E. Ryan

We use spatially resolved spectroscopy from the Calar Alto Legacy Field Area (CALIFA) survey to study the nature of the line emitting gas in galaxies of different Hubble types, focusing on the separation of star-forming (SF) regions from…

Ly$\alpha$ emission is an exceptionally informative tracer of the life cycle of evolving galaxies and the escape of ionising photons. However, theoretical studies of Ly$\alpha$ emission are often limited by insufficient numerical…

Astrophysics of Galaxies · Physics 2024-10-08 Yuxuan Yuan , Sergio Martin-Alvarez , Martin G. Haehnelt , Thibault Garel , Debora Sijacki

We present a novel photolithography based technique to efficiently fabricate microlens-fibre based Integral Field Units (IFUs). These IFUs are being developed for Devasthal Optical Telescope Integral Field Spectrograph (DOTIFS) which offer…

Instrumentation and Methods for Astrophysics · Physics 2018-07-18 Sabyasachi Chattopadhyay , Vishal Joshi , A. N. Ramaprakash , Deepa Modi , Abhay Kohak , Haeun Chung

International Large Detector (ILD) adopts Particle Flow Algorithm (PFA) for precise measurement of multiple jets. The electromagnetic calorimeter (ECAL) of ILD has two candidates sensor technologies for PFA, which are pixelized silicon…

Diagnosing the physical and chemical conditions within star-forming galaxies (SFGs) is of paramount importance to understanding key components of galaxy formation and evolution: star-formation, gas enrichment, outflows, and accretion. Well…

We present VLT/VIMOS-IFU emission-line spectroscopy of a volume limited sample of 18 southern ULIRGs selected with z<0.09 and dec<10. By covering a wide range of ULIRG types, this dataset provides an important set of templates for…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-05 Mark Westmoquette , Dave Clements , George Bendo , Sophia Khan

The use of a gas cell as a target for laser weakfield acceleration (LWFA) offers the possibility to obtain stable and manageable laser-plasma interaction process, a mandatory condition for practical applications of this emerging technique,…

Optics · Physics 2019-04-17 F. Brandi , F. Giammanco , F. Conti , F. Sylla , G. Lambert , L. A. Gizzi

LISA PathFinder (LPF) will be flown with the objective to test in space key technologies for LISA. However its sensitivity goals are, for good reason, one order of magnitude less than those which LISA will have to meet, both in drag-free…

The Low Frequency Instrument (LFI) is a radiometer array covering the 30-70 GHz spectral range on-board the ESA Planck satellite, launched on May 14th, 2009 to observe the cosmic microwave background (CMB) with unprecedented precision. In…

This paper provides an overview of the Low Frequency Instrument (LFI) programme within the ESA Planck mission. The LFI instrument has been developed to produce high precision maps of the microwave sky at frequencies in the range 27-77 GHz,…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 N. Mandolesi , M. Bersanelli , R. C. Butler , E. Artal , C. Baccigalupi , A. Balbi , A. J. Banday , R. B. Barreiro , M. Bartelmann , K. Bennett , P. Bhandari , A. Bonaldi , J. Borrill , M. Bremer , C. Burigana , R. C. Bowman , P. Cabella , C. Cantalupo , B. Cappellini , T. Courvoisier , G. Crone , F. Cuttaia , L. Danese , O. D'Arcangelo , R. D. Davies , R. J. Davis , L. De Angelis , G. de Gasperis , A. De Rosa , G. De Troia , G. de Zotti , J. Dick , C. Dickinson , J. M. Diego , S. Donzelli , U. Dörl , X. Dupac , T. A. Enßlin , H. K. Eriksen , M. C. Falvella , F. Finelli , M. Frailis , E. Franceschi , T. Gaier , S. Galeotta , F. Gasparo , G. Giardino , F. Gomez , J. Gonzalez-Nuevo , K. M. Górski , A. Gregorio , A. Gruppuso , F. Hansen , R. Hell , D. Herranz , J. M. Herreros , S. Hildebrandt , W. Hovest , R. Hoyland , K. Huffenberger , M. Janssen , T. Jaffe , E. Keihänen , R. Keskitalo , T. Kisner , H. Kurki-Suonio , A. Lähteenmäki , C. R. Lawrence , S. M. Leach , J. P. Leahy , R. Leonardi , S. Levin , P. B. Lilje , M. López-Caniego , S. R. Lowe , P. M. Lubin , D. Maino , M. Malaspina , M. Maris , J. Marti-Canales , E. Martinez-Gonzalez , M. Massardi , S. Matarrese , F. Matthai , P. Meinhold , A. Melchiorri , L. Mendes , A. Mennella , G. Morgante , G. Morigi , N. Morisset , A. Moss , A. Nash , P. Natoli , R. Nesti , C. Paine , B. Partridge , F. Pasian , T. Passvogel , D. Pearson , L. Pérez-Cuevas , F. Perrotta , G. Polenta , L. A. Popa , T. Poutanen , G. Prezeau , M. Prina , J. P. Rachen , R. Rebolo , M. Reinecke , S. Ricciardi , T. Riller , G. Rocha , N. Roddis , R. Rohlfs , J. A. Rubiño-Martin , E. Salerno , M. Sandri , D. Scott , M. Seiffert , J. Silk , A. Simonetto , G. F. Smoot , C. Sozzi , J. Sternberg , F. Stivoli , L. Stringhetti , J. Tauber , L. Terenzi , M. Tomasi , J. Tuovinen , M. Türler , L. Valenziano , J. Varis , P. Vielva , F. Villa , N. Vittorio , L. Wade , M. White , S. White , A. Wilkinson , A. Zacchei , A. Zonca

Line-intensity mapping (LIM) is quickly attracting attention as an alternative technique to probe large-scale structure and galaxy formation and evolution at high redshift. LIM one-point statistics are motivated because they provide access…

Cosmology and Nongalactic Astrophysics · Physics 2024-03-06 José Luis Bernal

Line intensity mapping (LIM) is a technique for producing 3D maps of the Universe by scanning the sky with a spectrometer sensitive to a range of wavelengths corresponding to the redshifted spectral lines of atoms or molecules, such as…

Cosmology and Nongalactic Astrophysics · Physics 2026-03-16 Samuel H. Kramer , Patrick C. Breysse , Anthony R. Pullen , Faizah K. Siddique , Eric R. Switzer , Peter T. Timbie , Dongwoo Chung

We show that studying of low-frequency internal friction (LFIF) of solid samples at low temperatures allows determining the presence of various gases absorbed, for some reasons, in pores and caverns of the solids. The gases come over to a…

Materials Science · Physics 2016-07-20 A. I. Erenburg , A. Yu. Zakharov , A. V. Leont'eva , A. Yu. Prokhorov
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