Debattista3,4 1 department of astronomy and mcdonald observatory, university of texas, austin, tx 78712, usa. Ifs galaxy surveys use integral field spectroscopy. The job of the ifu is to divide the 2d spatial plane into a continuous array. Observations of galaxy isophotes, longslit kinematics, and highresolution photometry suggested a possible dichotomy between two distinct classes of elliptical galaxies. Abstract we present high spatial resolution spectroscopic observations of the proplyd 167317 lv2 near the trapezium cluster in the orion nebula, obtained during the system verification run of the gemini multiobject spectrograph gmos integral field unit ifu at the gemini south observatory. Development of an integral field unit ifu with an image slicer shinobu ozaki, satoshi miyazaki, takuya yamashita, takashi hattori, norio okada, kenji mitsui naoj 20110118 subaru future instrumentation workshop. Visible integralfield replicable unit spectrograph virus.
Nearinfrared integral field spectroscopy of starforming. Integral field unit spectroscopy of 10 early type galactic nuclei. Units ifu concentrates a large fraction of light from the planet within the first. We describe the integral field spectroscopy ifs capability of the gemini nearinfrared spectrograph gnirs installed on the geminisouth telescope. Integral field spectroscopy ifs has become an important subdiscipline of astronomy with the proliferation of large aperture, highresolution telescopes where there is a need to study the spectra of extended objects as a function of position, or of clusters of many discrete stars or point sources in a small field. This technique is distinct from previous spectroscopic surveys in sdss which obtained spectra at only a single point, or longslit spectroscopy which provides some spatial information but. We present optical integral field unit ifu observations vltvimos. Structure and kinematics of earlytype galaxies from. The advanced image slicer ifus is the key technique for future instruments such as tmt, jwst of course for subaru swimsifu is now under developing. Integral field unit spectroscopy of the stellar disk.
Field guide to spectroscopy 2006 ball publications spie. Pdf integral field spectroscopy of planetary nebulae. We used the gemini multiobject spectrograph gmos in integral field unit ifu mode allingtonsmith et al. But these methods are expensive for large galaxy samples. Spatially resolved optical integral field unit spectroscopy. Integral field spectroscopy 101 november, 2015 zach pace as frequent readers know, the sdssivmanga survey plans to obtain spatiallyresolved spectra of somewhere in the neighborhood of 10,000 galaxies using a technique called integralfield spectroscopy or ifs. Vibronic spectroscopy 92 raman spectroscopy 93 lasers 94 fluorescence 95 phosphorescence 96 photoelectron spectroscopy 97 appendix 98 equation summary 98 bibliography 102 index 103 preface. The integral field unit of the near infrared spectrograph. Observing the distant universe with the integral field unit of nirspec. Field guide to spectroscopy 2006 ball publications.
Supernova spectroscopy with an integral field unit spectrograph. The nirspec integral field unit ifu spectroscopy template is to be used for all observations using the ifu spectroscopy mode of nirspec, and this article describes allowed values for all parameters. Instead, integral field spectroscopy can efficiently recognize the shape, dynamics, and stellar population of complete samples of earlytype galaxies etgs. The design, integration and test of the gnirs integral field unit ifu are the responsibility of the university of durhams astronomical instrumentation group. Supernova spectroscopy with an integral field unit spectrograph ifu wfirst is a powerful survey telescope, and will collect such large and deep surveys that we expect the final sn measurements of dark energy to be systematics limited. Hollenbach,7 eiichi egami,8 keith matthews,2 thomas w. Imaging fourier transform spectroscopy ifts is a promising, although technically very challenging, option for widefield hyperspectral imagery. Image slicing is, in principle, the most efficient technique of ifs. The astronomical instrumentation group aig of the university of durham has recently completed an integral field unit ifu for use on the geminisouth telescope with the gemini nearinfrared spectrograph gnirs built by the national optical astronomy observatories noao, usa. This division can be achieved in three ways as described below and illustrated in the figure following. Tarr national solar observatory, 22 ohia ku, makawao, hi 96768, usa. Pdf integral field spectroscopy of planetary nebulae with. With the ifu deployed, integral field spectroscopy is available over a.
In applications of integral field spectroscopy to diffraction limited cases, three. This shows that the best method in theory is image slicing, especially as implemented in the advanced image slicer ais design used in the ifu of the gemini nearinfrared. Integral field unit spectroscopy of 10 earlytype galactic. Such spectroscopic investigations have previously been carried out. Integral field spectroscopy with low surface brightness sensitivity is the tool employed to advance our understanding of the distribution, interplay. Basic principles of integral field spectroscopy sciencedirect. Integral field unit for the gemini nearinfrared spectrograph. There are several possible approaches to building an integral field unit into an infrared spectrograph. Ifu spectroscopy is an observing technique that provides spectral information over a 2d field of view using instruments known as ifus integral field units. The multiobject spectrograph flames also has two integral field units, while the second generation infrared spectrograph kmos has 24 small.
The integral field unit of the near infrared spectrograph for. Gemini multiobject spectrograph integral field unit. Integral field spectrographs are instruments that allow you to gather spectra of the sky over a twodimensional field ofview. Development of an integral field unit with an image slicer. This makes use of the advanced image slicer ais optical concept of content. Integral field spectroscopy ifs produces a spectrum for each spatial element spaxel in the field of view, allowing detailed studies of extended objects without the sampling errors, biases and inefficiencies inherent in slit spectroscopy. At eso, the first dedicated integral field spectrograph was sinfoni, which saw its first light at the very large telescope vlt in 2004. Ifs is able to simultaneously obtain a spectrum for each spatial sample of a twodimensional field. Integral field spectroscopy is that subset of 3d spectroscopy in which all the data for one pointing of the telescope is obtained simultaneously. As such, novices can use this guide to obtain an overview of the field, and experts can use it as a quick reference.
Advice on how to choose values which optimize your science can be found in the miri mrs apt template article. Integral field spectroscopy with the gemini nearinfrared. Very popular option for many projects, whenever the surface density of targets is high e. Integral field spectroscopy ifs has merited much attention in recent years due to its advantages with respect to classical sequential 2d spectroscopic techniques e. Our ifu consists of a micromirror slicer of 45 arrayed, highly narrow, flat metallic mirrors and a pseudopupilmirror array of offaxis conic aspheres forming three pseudo slits of rearranged slicer images. The ifu offers either the option of the standard msa target acquisition, or to simply take an image to verify pointing during postanalysis.
Regardless of the technique used to obtain the data, the final product is usually a datacube, with axes of x, y or ra, dec. Aug 16, 2000 the gemini near ir spectrograph gnirs currently under development at noao and scheduled for delivery in the summer of 2002, will include a powerful and innovative integral field spectroscopy ifs capability. Gmos is converted to this mode by the remote insertion of an integral field unit ifu into the beam in place of the masks used for multiobject spectroscopy. Integral field spectroscopy sinfoni observation of agn at z1. Ifu and wiynsparsepak, and associated archival deep h. Nov, 2015 integral field spectroscopy 101 november, 2015 zach pace as frequent readers know, the sdssivmanga survey plans to obtain spatiallyresolved spectra of somewhere in the neighborhood of 10,000 galaxies using a technique called integral field spectroscopy or ifs. Development of an integral field unit for a nirmos camera.
Optical spectroscopy and modeling are applied to four independent problems related to the structure and evolution of galaxies. The gemini multiobject spectrograph gmos installed on the gemininorth telescope has a facility for integral field spectroscopy over the wavelength range 0. An overview of the capabilities of muse applied to planetary nebulae pne is provided together with the. This paper presents the integralfield spectroscopy ifs mode of nirspec. Integral field spectroscopy with the gemini multiobject. Its spatial 60 arcsecond field and wavelength 48009300a coverage is well suited to detailed imaging spectroscopy of extended planetary nebulae, such as in the galaxy. Techniques and data production 48 july 2005 centre for advanced instrumentation, durham, uk edited by jeremy allingtonsmith, joris gerssen, david robertson.
Integral field spectroscopy as a probe of galaxy evolution. The miri medium resolution integral field unit spectroscopy template is to be used for all observations using the medium resolution spectroscopy mode of miri, and this article describes allowed values for all parameters. This field guide covers a broad spectrum of topics in the field of spectroscopy, condensing the subjects to their essentials. A simple and friendly integral field unit available at the wht. Galaxies free fulltext integral field spectroscopy of. Shock heating energy of umbral flashes measured with integral. Integral field unit spectroscopy of the stellar disk truncation region of ngc 6155. We present an innovative optical design for image slicer integral field unit ifu and a manufacturing method that overcomes optical limitations of metallic mirrors. Pdf the james webb space telescope jwst mission is a collaborative. We present in this paper an introduction to the ifts concept and its advantages and drawbacks, as well as examples of data obtained with a prototype ifts, spiomm, attached to the 1. The problems cover a broad range of lookback time and galaxy mass. University of groningen integralfield spectroscopy of.
Development of an integral field unit for swims summary integral field spectroscopy have an increasing impact on our understanding of galaxy evolution mechanisms. Spie 10706, advances in optical and mechanical technologies for telescopes and instrumentation iii, 107062d 10. Each spaxel or unit of spatial resolution is this a rectangle with a 2. Supernova spectroscopy with an integral field unit. The multiunit spectroscopic explorer muse is a large integral field unit mounted on the eso very large telescope. Integralfield spectroscopy ifs has merited much attention in recent years due to its advantages with respect to. An integral field spectrograph, or a spectrograph equipped with an integral field unit ifu, is an. An integral field spectrograph, or a spectrograph equipped with an integral field unit ifu, is an optical instrument combining spectrographic and imaging capabilities, used to obtain spatially resolved spectra in astronomy and other fields of research such as biomedical science and earth observation or remote sensing. A new photolithography based technique to mass produce. Integral field spectroscopy 101 science blog from the sdss. The instrument provides integral field spectroscopy from 350 nm to 550 nm of ov er 33,600 spatial elements per observation, each 1. Miri medium resolution integral field unit spectroscopy.
Slit vs integral field spectroscopy morphology of real objects do not follow the slit light losses resolution depends on slit itself a spectrum for each spaxel no or limited light losses, full sampling of the target save of telescope time coupled with ao provides unique physical details of the target. Development of micromirror slicer integral field unit for. Nirspec integral field unit ifu spectroscopy template. The gemini multiobject spectrographs gmos are a virtually identical pair of spectrographs installed on the two gem. Pdf the integral field unit on the james webb space. Sinfoni works with an image slicer, on the same principle as the more recent muse instrument, which has a giant ifu. Cover a substantial fraction of the extension of the galaxies. This shows that the best method in theory is image slicing, especially as implemented in the advanced image slicer design used in the integral field unit of the gemini nearinfrared. The near infrared spectrograph nirspec on board of the james webb space telescope jwst will be equipped with an integral field unit ifu which will allow the twodimensional spectral characterization of astronomical objects with unprecedented depths, especially in the 25 micron wavelength range. The systematic errors can be created by the instrument, and these are addressed by design and. A simple and friendly integral field unit available. Shock heating energy of umbral flashes measured with. Integral field spectroscopy and 3d instrumentation. Integral field spectroscopyintegral field spectroscopy pierre antilogus p.
With the ifu deployed, integral field spectroscopy is available over a fullyfilled contiguous field of 5 x 7 arcsec with a sampling of 0. I principal component analysis tomography and nuclear activity by t. The term 3d spectroscopy is often used, perhaps erroneously, 1 to indicate any technique that produces spatiallyresolved spectra over a twodimensional field. Integral field unit spectroscopy of 10 early type galactic. An integral field spectrograph consists of two components. This configuration uses 750 microlenses located at the focal plane of the telescope, 500 of which are used to observe the object and 250 are dedicated to the sky, both separated by 1 arcmin. Of all the field guides published to date, this one may stand out due to its relatively broad topic. Wfirst is a powerful survey telescope, and will collect such large and deep surveys. Frida is a diffractionlimited imager and integralfield spectrometer. The integral field unit will be loaded into the focal plane in the same way as a slit mask to allow a rapid changeover between integral field and aperture spectroscopy. Integral field spectroscopy ifs has become an important sub discipline of astronomy with the proliferation of large.
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