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The task of flux calibration for LAMOST (Large sky Area Multi-Object Spectroscopic Telescope) spectra is difficult due to many factors. For example, the lack of standard stars, flat fielding for large field of view, and variation of…

The Infrared Array Camera (IRAC) is a four-channel camera on the Spitzer Space Telescope, one of three focal plane science instruments. IRAC uses two pairs of 256x256 pixel InSb and Si:As IBC detectors to provide simultaneous imaging at…

Astrophysics · Physics 2009-11-11 Joseph L. Hora , Brian M. Patten , Giovanni G. Fazio , William J. Glaccum

The Halpha and mid-infrared mean disk surface brightnesses are compared in a sample of nearby spirals observed by ISOCAM. This shows that, in spiral disks, dust emission at 7 and 15 microns provides a reasonable star formation tracer. The…

Astrophysics · Physics 2008-11-26 H. Roussel , M. Sauvage , L. Vigroux , A. Bosma

In preparation for James Webb Space Telescope (JWST), a set of cross calibration programs with HST and Spitzer for suitable primary photometric standards and astrometric fields were developed. NICMOS/HST and IRAC/Spitzer photometry…

Astrophysics · Physics 2007-05-23 Rosa I. Diaz-Miller

Herbig Ae/Be objects are pre-main sequence stars surrounded by gas- and dust-rich circumstellar discs. These objects are in the throes of star and planet formation, and their characterisation informs us of the processes and outcomes of…

Solar and Stellar Astrophysics · Physics 2016-01-20 N. Pascual , B. Montesinos , G. Meeus , J. P. Marshall , I. Mendigutía , G. Sandell

We present Spitzer/IRAC observations of nine $z'$-band dropouts highly magnified (2<mu<12) by the Bullet Cluster. We combine archival imaging with our Exploratory program (SURFS UP), which results in a total integration time of ~30 hr per…

Interstellar dust extinction curves provide valuable information about dust properties, including the composition and size of the dust grains, and are essential to correct observations for the effects of interstellar dust. In this work, we…

We have used the Submillimeter Array to image a flux limited sample of seven submillimeter galaxies, selected by the AzTEC camera on the JCMT at 1.1 mm, in the COSMOS field at 890um with 2" resolution. All of the sources - two radio-bright…

We derive an empirical effective temperature and bolometric luminosity calibration for G and K dwarfs, by applying our own implementation of the InfraRed Flux Method to multi-band photometry. Our study is based on 104 stars for which we…

Astrophysics · Physics 2009-11-11 L. Casagrande , L. Portinari , C. Flynn

Models derived in 2009 to fit mid-infrared (8-24 micron) source counts from the IRAS, ISO and Spitzer missions, provide an excellent fit to deep counts with JWST, demonstrating that the evolution of dusty star-forming galaxies is well…

Astrophysics of Galaxies · Physics 2023-12-07 Michael Rowan-Robinson

We calculate the planet-star flux-density ratios as a function of wavelength from 0.5 microns to 25 microns for the transiting extrasolar giant planets TrES-1 and HD209458b and compare them with the recent Spitzer/IRAC-MIPS secondary…

Astrophysics · Physics 2009-11-10 A. Burrows , I. Hubeny , D. Sudarsky

We aim to estimate and analyse the physical properties of the infrared counterparts of HMPOs by comparing their spectral energy distributions (SED) with those predicted by radiative transfer accretion models of YSOs. The SED of 68 IRCs are…

Solar and Stellar Astrophysics · Physics 2009-11-13 J. M. C. Grave , M. S. N. Kumar

We present here the results of our observations of TrES-2 using the Infrared Array Camera on Spitzer. We monitored this transiting system during two secondary eclipses, when the planetary emission is blocked by the star. The resulting…

Earth and Planetary Astrophysics · Physics 2014-11-20 Francis T. O'Donovan , David Charbonneau , Joseph Harrington , N. Madhusudhan , Sara Seager , Drake Deming , Heather A. Knutson

The atmospheres and accretion disks of planetary-mass and substellar companions provide an unprecedented look into planet and moon formation processes, most notably the frequency and lifetime of circumplanetary disks. In our ongoing effort…

Earth and Planetary Astrophysics · Physics 2022-01-05 Raquel A. Martinez , Adam L. Kraus

We use globular cluster data from the Resolved Stellar Populations Early Release Science (ERS) program to validate the flux calibration for the Near Infrared Camera (NIRCam) on the James Webb Space Telescope (JWST). We find a significant…

Infrared photometry and later infrared spectroscopy provided powerful diagnostics to distinguish between the main emission mechanisms in galaxies: AGN and Starburst. After the pioneering work on infrared photometry with IRAS in the far-IR…

Astrophysics of Galaxies · Physics 2009-01-23 Luigi Spinoglio , Silvia Tommasin , Matthew A. Malkan

Edge-on spiral galaxies offer a unique perspective on disks. One can accurately determine the height distribution of stars and ISM and the line-of-sight integration allows for the study of faint structures. The Spitzer IRAC camera is an…

Astrophysics · Physics 2008-01-21 B. W. Holwerda , R. S. de Jong , A. Seth , J. J. Dalcanton , M. Regan , E. Bell , S. Bianchi

Edge-on spiral galaxies offer a unique perspective on disks. One can accurately determine the height distribution of stars and ISM and the line-of-sight integration allows for the study of faint structures. The Spitzer IRAC camera is an…

Astrophysics · Physics 2007-10-22 B. W. Holwerda , R. S. de Jong , A. Seth , J. J. Dalcanton , M. Regan , E. Bell , S. Bianchi

This paper presents the results of a Spitzer IRAC 3-8 micron photometric search for warm dust orbiting 17 nearby, metal-rich white dwarfs, 15 of which apparently have hydrogen dominated atmospheres (type DAZ). G166-58, G29-38, and GD 362…

Astrophysics · Physics 2009-12-08 J. Farihi , B. Zuckerman , E. E. Becklin

We present an IRAC 3.6+4.5 microns selected catalog in the Extended Groth Strip (EGS) containing photometry from the ultraviolet to the far-infrared and stellar parameters derived from the analysis of the multi-wavelength data. In this…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 Guillermo Barro , P. G. Perez-Gonzalez , J. Gallego , M. L. N. Ashby , M. Kajisawa , S. Miyazaki , V. Villar , T. Yamada , J. Zamorano