scholarly journals Developing wide-field spatio-spectral interferometry for far-infrared space applications

2012 ◽  
Author(s):  
David Leisawitz ◽  
Matthew R. Bolcar ◽  
Richard G. Lyon ◽  
Stephen F. Maher ◽  
Nargess Memarsadeghi ◽  
...  
Keyword(s):  
Far Infrared ◽  
Wide Field ◽  
Space Applications ◽  
Spectral Interferometry

scholarly journals Observations of galaxies at z>6. The properties of large, spectroscopic samples

2006 ◽  
Vol 2 (14) ◽  
pp. 252-252
Author(s):  
Esther M. Hu ◽  
Lennox L. Cowie ◽  
Yuko Kakazu
Keyword(s):  
High Redshift ◽  
Broad Band ◽  
Ccd Camera ◽  
Far Infrared ◽  
Current Status ◽  
Wide Field ◽  
High Redshift Galaxies ◽  
Field Samples ◽  
Multi Wavelength ◽  
Redshift Galaxies

AbstractObserved properties of spectroscopically confirmed galaxies at z≫5 and z≫6 based on selection from deep, multi-wavelength wide-field samples provide a picture of the current status of the properties of high-redshift galaxies and their evolution to yet higher redshifts.In the current presentation, we use results of deep, wide-field spectroscopy with the multi-object Deimos spectrograph on Keck in combination with deep, wide-field multi-color imaging studies using the SuprimeCam CCD camera of Subaru for a number of fields, to evaluate the luminosity function of high-redshift galaxies and its evolution at z>6. High-redshift candidates are selected using both narrow-band Lyman alpha emission and broad-band colors with a high success-rate from a number of SuprimeCam (0.5 degree FOV) fields.Luminosity functions and Lymanα emission line profiles and equivalent widths appear similar between samples at z≃5.7 and z≃6.5, and the galaxy distribution is structured both spatially and in redshift. A large amount of cosmic variance is seen in the distribution of z≫6 galaxies from field to field.The observed properties are discussed in relationship to their impact on strategies for complementary optical surveys of high-redshift galaxies, and in relationship to surveys at very different wavelengths (X-ray, far-infrared, and submillimeter) that cover the same regions.

scholarly journals Probing the cold magnetised Universe with SPICA-POL (B-BOP)

2019 ◽  
Vol 36 ◽  
Author(s):  
Ph. André ◽  
A. Hughes ◽  
V. Guillet ◽  
F. Boulanger ◽  
A. Bracco ◽  
...  
Keyword(s):  
Magnetic Fields ◽  
Dynamic Range ◽  
Signal To Noise Ratio ◽  
European Space Agency ◽  
Dust Emission ◽  
Far Infrared ◽  
High Dynamic Range ◽  
Wide Field ◽  
Infrared Telescope ◽  
Nearby Galaxies

Abstract Space Infrared Telescope for Cosmology and Astrophysics (SPICA), the cryogenic infrared space telescope recently pre-selected for a ‘Phase A’ concept study as one of the three remaining candidates for European Space Agency (ESA's) fifth medium class (M5) mission, is foreseen to include a far-infrared polarimetric imager [SPICA-POL, now called B-fields with BOlometers and Polarizers (B-BOP)], which would offer a unique opportunity to resolve major issues in our understanding of the nearby, cold magnetised Universe. This paper presents an overview of the main science drivers for B-BOP, including high dynamic range polarimetric imaging of the cold interstellar medium (ISM) in both our Milky Way and nearby galaxies. Thanks to a cooled telescope, B-BOP will deliver wide-field 100–350 $\mu$ m images of linearly polarised dust emission in Stokes Q and U with a resolution, signal-to-noise ratio, and both intensity and spatial dynamic ranges comparable to those achieved by Herschel images of the cold ISM in total intensity (Stokes I). The B-BOP 200 $\mu$ m images will also have a factor $\sim $ 30 higher resolution than Planck polarisation data. This will make B-BOP a unique tool for characterising the statistical properties of the magnetised ISM and probing the role of magnetic fields in the formation and evolution of the interstellar web of dusty molecular filaments giving birth to most stars in our Galaxy. B-BOP will also be a powerful instrument for studying the magnetism of nearby galaxies and testing Galactic dynamo models, constraining the physics of dust grain alignment, informing the problem of the interaction of cosmic rays with molecular clouds, tracing magnetic fields in the inner layers of protoplanetary disks, and monitoring accretion bursts in embedded protostars.

Novel far-infrared detectors for space applications

1999 ◽  
Author(s):  
A. G. Unil Perera ◽  
W. Z. Shen ◽  
Hui C. Liu ◽  
Margaret Buchanan ◽  
William J. Schaff
Keyword(s):  
Infrared Detectors ◽  
Far Infrared ◽  
Space Applications ◽  
Far Infrared Detectors

Two-mirror, three-reflection telescopes as candidates for sky surveys in ground and space applications. The MINITRUST: an active optics warping telescope for wide-field astronomy

2002 ◽  
Author(s):  
Roberto F. Viotti ◽  
Cesare D. La Padula ◽  
Agostino Vignato ◽  
Gerard R. Lemaitre ◽  
Pierre Montiel ◽  
...  
Keyword(s):  
Wide Field ◽  
Space Applications ◽  
Active Optics ◽  
Sky Surveys

Infrared Surveys Planned for ASTRO-F

2005 ◽  
Vol 216 ◽  
pp. 347-352
Author(s):  
Hiroshi Shibai
Keyword(s):  
Far Infrared ◽  
Wide Field ◽  
Wavelength Band ◽  
Mid Infrared ◽  
Field Surveys ◽  
Infrared Wavelength ◽  
Sky Surveys ◽  
Sky Survey ◽  
Infrared Surveys ◽  
Higher Sensitivity

The next survey mission, ASTRO-F, is scheduled for launch in 2005. This is the first Japanese satellite dedicated to infrared astronomy. The primary purpose of this project is to investigate the birth and evolution of galaxies in the early universe through deep, wide-field surveys at wavelengths ranging from 2 to 200 microns. In the far-infrared wavelength band, ASTRO-F will conduct an all-sky survey like the IRAS survey with several tens of times higher sensitivity and several times better spatial resolution. In the near- and mid-infrared, wide area sky-surveys will be conducted over pre-selected portions of the sky in 13 bands ranging from 2-200microns. In addition to these photometric surveys, low-resolution spectroscopic capabilities are available for all wavelength bands. The ASTRO-F mission will produce a fundamental database for the next generation of advanced observatories, for example Herschel, and JWST, and will complement the SIRTF mission by virtue of its wide sky coverage.

Developing Spatio-spectral Interferometry in the Lab for Far-IR Space Applications

2013 ◽  
Author(s):  
David Leisawitz ◽  
Stephen A. Rinehart ◽  
Matthew Bolcar ◽  
Steve Maher ◽  
Richard Lyon ◽  
...  
Keyword(s):  
Space Applications ◽  
Spectral Interferometry
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