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While continuum imaging data at far-infrared to sub-millimeter wavelengths have provided tight constraints on the population properties of dusty star forming galaxies up to high redshifts, future space missions like the Space Infra-Red…

Astrophysics of Galaxies · Physics 2015-06-18 M. Bonato , M. Negrello , Z. -Y. Cai , G. De Zotti , A. Bressan , A. Lapi , C. Gruppioni , L. Spinoglio , L. Danese

Photometric redshifts (photo-z's) provide an efficient alternative to spectroscopic redshifts, enabling redshift estimation for large galaxy samples. However, traditional photo-z methods primarily rely on optical and near-infrared (OIR)…

Cosmology and Nongalactic Astrophysics · Physics 2025-08-15 Pouya Tanouri , Ryley Hill , Douglas Scott , Edward L. Chapin

Investigating the environment of the massive black hole SgrA* at the center of the Galaxy requires the highest angular resolution available to avoid source confusion and to study the physical properties of the individual objects. GCIRS7 has…

Astrophysics · Physics 2009-11-13 J. -U. Pott , A. Eckart , A. Glindemann , S. Kraus , R. Schodel , A. M. Ghez , J. Woillez , G. Weigelt

Debris discs are typically revealed through excess emission at infrared wavelengths. Most discs exhibit excess at mid- and far-infrared wavelengths, analogous to the solar system's Asteroid and Edgeworth-Kuiper belts. Recently, stars with…

Earth and Planetary Astrophysics · Physics 2016-07-20 J. P. Marshall , D. V. Cotton , K. Bott , S. Ertel , G. M. Kennedy , M. C. Wyatt , C. del Burgo , O. Absil , J. Bailey , L. Kedziora-Chudczer

For many years broadband colours have been used to obtain insight into the contents of galaxies, in particular to estimate stellar and dust content. Broadband colours are easy to obtain for large samples of objects, making them ideal for…

Astrophysics · Physics 2019-07-31 Roelof S. de Jong

Luminous and ultra-luminous infrared galaxies ((U)LIRGs) are rare today but are increasingly abundant at high redshifts. They are believed to be dusty starbursts, and hence should have high rates of supernovae (multiple events per year).…

Astrophysics of Galaxies · Physics 2018-10-31 Haojing Yan , Zhiyuan Ma , John F. Beacom , James Runge

Growth curves of the near-infrared (NIR) magnitude as a function of the aperture have been built and used to derive NIR total magnitudes from aperture data taken from the literature. By cross-correlating with optical and redshift data,…

Astrophysics · Physics 2007-05-23 Michel Fioc , Brigitte Rocca-Volmerange

R Coronae Borealis variable stars are suspected to sporadically eject optically thick dust clouds causing, when one of them lies on the line-of-sight, a huge brightness decline in visible light. Mid-infrared interferometric observations of…

Astrophysics · Physics 2009-11-13 I. C. Leao , Patrick De Laverny , O. Chesneau , D. Mekarnia , J. R. De Medeiros

We fit a parametric model comprising a mixture of multi-dimensional Gaussian functions to the 3.6 to 8um colour and optical photo-z distribution of galaxy populations in the ELAIS-N1 and Lockman Fields of SWIRE. For 16,698 sources in…

We have investigated the IRAS colours and the far-IR to optical luminosity ratios of a complete sample of elliptical's and S0's brighter than $B_T = 12$. On the average, elliptical galaxies emit in the far-IR less than 1\% of their…

Astrophysics · Physics 2009-10-22 P. Mazzei , G. De Zotti

We have used the Mid-InfraRed Instrument (MIRI) on the James Webb Space Telescope (JWST) to obtain the first spatially resolved, mid-infrared (mid-IR) images of IIZw096, a merging luminous infrared galaxy (LIRG) at $z = 0.036$. Previous…

We have conducted B, g, V, and R-band imaging in a 45x40 arcmin^2 field containing part of the high Galactic latitude translucent cloud MBM32, and correlated the intensity of diffuse optical light S_\nu(\lambda) with that of 100 micron…

Astrophysics of Galaxies · Physics 2015-06-15 N. Ienaka , K. Kawara , Y. Matsuoka , H. Sameshima , S. Oyabu , T. Tsujimoto , B. A. Peterson

We analyze J, H and Ks near-infrared data for 9 Blue Compact Dwarf (BCD) galaxies, selected from a larger sample that we have already studied in the optical. We present contour maps, surface brightness and color profiles, as well as color…

Astrophysics · Physics 2009-11-07 L. M. Cairos , N. Caon , P. Papaderos , K. Noeske , J. M. Vilchez , B. Garcia-Lorenzo , C. Munoz-Tunon , .

We have mapped four regions of the southern Galactic plane at 31 GHz with the Cosmic Background Imager. From the maps, we have extracted the flux densities for six of the brightest \hii regions in the southern sky and compared them with…

The diagnostic use and detectability of luminous fine structure lines from high redshift galaxies is reviewed in the light of results from COBE concerning the Milky Way and from ISO on low redshift galaxies. At the highest luminosities…

Astrophysics · Physics 2007-05-23 Paul P. van der Werf

(abridged) The overwhelming majority of diagnostic tools for galactic activity are focused on active galaxies. Passive or dormant galaxies are often excluded from these diagnostics which usually employ emission line features. In this work,…

Astrophysics of Galaxies · Physics 2023-11-15 Charalampos Daoutis , Elias Kyritsis , Konstantinos Kouroumpatzakis , Andreas Zezas

Until recently, only a handful of dusty, star-forming galaxies (DSFGs) were known at $z>4$, most of them significantly amplified by gravitational lensing. Here, we have increased the number of such DSFGs substantially, selecting galaxies…

On behalf of the WISE Science team, we present the discovery of a class of distant dust-enshrouded galaxies with extremely high luminosity. These galaxies are selected to have extreme red colors in the mid-IR using NASA's Wide-field…

JWST has revealed a population of compact `Little Red Dots' (LRDs) at $z\gtrsim4$, with red rest-frame optical and blue UV colors. These objects are likely compact dusty starbursts or heavily reddened AGNs, playing a pivotal role in early…

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