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Related papers: The Optical and Infrared Are Connected

200 papers

We intend to show that it is possible to derive the physical parameters of galaxies from their broad-band spectral energy distribution out to a redshift of 1.2. This method has the potential to yield the physical parameters of all galaxies…

We present a new method for inferring photometric redshifts in deep galaxy and quasar surveys, based on a data driven model of latent spectral energy distributions (SEDs) and a physical model of photometric fluxes as a function of redshift.…

Cosmology and Nongalactic Astrophysics · Physics 2017-03-29 Boris Leistedt , David W. Hogg

A method for using the sub-millimeter band to determine photometric redshifts of luminous high-z dusty galaxies is presented. It is based on the observation that local ultra-luminous IR galaxies show an average spectral energy distribution…

Astrophysics · Physics 2007-05-23 Tommy Wiklind

Near infrared adaptive optics observations are crucial to be able to interpret kinematic and dynamical data and study star formation properties within the often extremely dusty interacting luminous IR galaxies (LIRGs). NIR AO data are also…

Cosmology and Nongalactic Astrophysics · Physics 2009-08-26 Petri Vaisanen , Seppo Mattila , Stuart Ryder

We have performed 23 GHz VLA observations of 7 compact, luminous infrared galaxies, selected to have evidence of starburst activity. New and published multi-frequency data are combined to obtain the spectral energy distributions of all 7…

Astrophysics · Physics 2009-11-10 O. R. Prouton , A. Bressan , M. Clemens , A. Franceschini , G. L. Granato , L. Silva

We study a combined sample of 264 star-forming, 51 composite, and 73 active galaxies using optical spectra from SDSS and mid-infrared (mid-IR) spectra from the Spitzer Infrared Spectrograph. We examine optical and mid-IR spectroscopic…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-05 Stephanie M. LaMassa , T. M. Heckman , A. Ptak , D. Schiminovich , M. O'Dowd , B. Bertincourt

New tools from Infrared Space Observatory (ISO) mid-infrared spectroscopy have recently become available to determine the power sources of dust-obscured ultraluminous infrared galaxies (ULIRGs). We compare ISO classifications - starburst or…

Astrophysics · Physics 2009-10-31 D. Lutz , S. Veilleux , R. Genzel

Several recent studies show that bright, intermediate and high redshift optically and radio selected QSOs are positively correlated with nearby galaxies on a range of angular scales up to a degree. Obscuration by unevenly distributed…

Astrophysics · Physics 2009-10-31 Liliya L. R. Williams

The infrared properties of blazars can be studied from the statistical point of view with the help of sky surveys, like that provided by the Wide-field Infrared Survey Explorer (WISE) and the Two Micron All Sky Survey (2MASS). However,…

We perform spectral energy distribution (SED) fitting to 711 luminous X-ray AGN at 0.7 < z < 4.5 using 10-bands of optical and infra-red photometric data for objects within XMM-SERVS. This fitting provided 510 reliable (reduced $\chi ^2 <…

Astrophysics of Galaxies · Physics 2022-07-27 Adam Marshall , Matthew W. Auger-Williams , Manda Banerji , Roberto Maiolino , Rebecca Bowler

This paper describes the methodology currently being implemented in the EIS pipeline for analysing optical/infrared multi-colour data. The aim is to identify different classes of objects as well as possible undesirable features associated…

We are conducting a large observing program with the Spitzer Space Telescope to determine the mid-to-far infrared spectral energy distributions of a well-defined sample of 87 nearby, 12 micron-selected Seyfert galaxies. In this paper we…

Data selection seeks to identify a compact yet informative subset from large-scale training corpora, balancing sample quality against collection diversity. We formulate this problem as a Weighted Independent Set (WIS) on a similarity graph,…

Machine Learning · Computer Science 2026-05-21 Yuan Zhang , Lifeng Guo , Junwen Pan , Wenzhao Zheng , Wen Zhou , Kuan Cheng , Kurt Keutzer , Shanghang Zhang

We utilize a Bayesian approach to fit the observed mid-IR-to-submm/mm spectral energy distributions (SEDs) of 22 WISE-selected and submm-detected, hyperluminous hot dust-obscured galaxies. By adopting the Torus+GB model, we decompose the…

Astrophysics of Galaxies · Physics 2016-06-01 Lulu Fan , Yunkun Han , Robert Nikutta , Guillaume Drouart , Kirsten K. Knudsen

We combine SDSS and WISE photometry for the full SDSS spectroscopic galaxy sample, creating SEDs that cover lambda=0.4-22 micron for an unprecedented large and comprehensive sample of 858,365 present-epoch galaxies. Using MAGPHYS we then…

Astrophysics of Galaxies · Physics 2015-07-10 Yu-Yen Chang , Arjen van der Wel , Elisabete da Cunha , Hans-Walter Rix

We classify the spectral energy distributions (SEDs) of 431,038 sources in the 9 sq. deg Bootes field of the NOAO Deep Wide-Field Survey (NDWFS). There are up to 17 bands of data available per source, including ultraviolet (GALEX), optical…

We aim to investigate the IR excess of 45 MW Cepheids combining different observables to constrain the presence of CSE. We used the SPIPS algorithm, a robust implementation of the parallax-of-pulsation method that combines photometry,…

Solar and Stellar Astrophysics · Physics 2021-07-28 A. Gallenne , A. Mérand , P. Kervella , G. Pietrzyński , W. Gieren , V. Hocdé , L. Breuval , N. Nardetto , E. Lagadec

We calculate the angular correlation function for a sample of 170,000 AGN extracted from the Wide-field Infrared Survey Explorer (WISE) catalog, selected to have red mid-IR colors (W1 - W2 > 0.8) and 4.6 micron flux densities brighter than…

Cosmology and Nongalactic Astrophysics · Physics 2014-09-17 E. Donoso , Lin Yan , D. Stern , R. J. Assef

We use photoionization models designed to reconcile the joint rest-UV-optical spectra of high-z star-forming galaxies to self-consistently infer the gas chemistry and nebular ionization and excitation conditions for ~150 galaxies from the…

Astrophysics of Galaxies · Physics 2018-12-05 Allison L. Strom , Charles C. Steidel , Gwen C. Rudie , Ryan F. Trainor , Max Pettini

The SIRTF InfraRed Spectrograph (IRS) is faced with many of the same calibration challenges that were experienced in the ISO SWS calibration program, owing to similar wavelength coverage and overlapping spectral resolutions of the two…

Astrophysics · Physics 2007-05-23 P. W. Morris , V. Charmandaris , T. Herter , L. Armus , J. Houck , G. Sloan