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Infrared spectroscopy in the mid- and far-infrared provides powerful diagnostics for studying the emission regions in active galaxies. The large variety of ionic fine structure lines can probe gas conditions in a variety of physical…

天体物理学 · 物理学 2007-09-27 Luigi Spinoglio

The mid-infrared (IR) range contains many spectral features associated with large molecules and dust grains such as polycyclic aromatic hydrocarbons (PAHs) and silicates. These are usually very strong compared to fine-structure gas lines,…

With the recent discovery of a dozen dusty star-forming galaxies and around 30 quasars at z>5 that are hyper-luminous in the infrared ($\mu$$L_{\rm IR}>10^{13}$ L$_{\odot}$, where $\mu$ is a lensing magnification factor), the possibility…

The SPICA mid and far-infrared telescope will address fundamental issues in our understanding of star formation and ISM physics in galaxies. A particular hallmark of SPICA is the outstanding sensitivity enabled by the cold telescope,…

Mid- to far-infrared (IR) lines are suited to study dust obscured regions in galaxies, because IR spectroscopy allows us to explore the most hidden regions where heavily obscured star formation as well as accretion onto supermassive…

星系天体物理 · 物理学 2021-09-08 Sabrina Mordini , Luigi Spinoglio , Juan Antonio Fernández-Ontiveros

Optical emission line diagnostics, which are a common tool to constrain the properties of the interstellar medium (ISM) of galaxies, become progressively inaccessible at higher redshifts for ground-based facilities. Far-infrared (FIR)…

星系天体物理 · 物理学 2024-07-17 Alice Schimek , Claudia Cicone , Sijing Shen , Davide Decataldo , Pamela Klaassen , Lucio Mayer

We present predictions for number counts and redshift distributions of galaxies detectable in continuum and in emission lines with the Mid-infrared (MIR) Instrument (SMI) proposed for the Space Infrared Telescope for Cosmology and…

星系天体物理 · 物理学 2015-07-15 M. Bonato , M. Negrello , Z. -Y. Cai , G. De Zotti , A. Bressan , T. Wada , K. Kohno , R. Maiolino , C. Gruppioni , F. Pozzi , A. Lapi

The mid- and far-IR spectral ranges are critical windows to characterize the physical and chemical processes that transform the interstellar gas and dust into stars and planets. Sources in the earliest phases of star formation and in the…

星系天体物理 · 物理学 2015-05-14 Javier R. Goicoechea , Jose Cernicharo

This review discussed near- and mid- infrared observations of ultracompact (UC) HII regions. The importance of ISO mid-IR fine-structure nebular lines is emphasised since only a small fraction of UCHII regions are observed directly in the…

天体物理学 · 物理学 2009-11-11 Paul Crowther

Infrared and nebular lines provide some of our best probes of the physics regulating the properties of the interstellar medium (ISM) at high-redshift. However, interpreting the physical conditions of high-redshift galaxies directly from…

Thanks to high sensitivity and angular resolution and broad spectral coverage, SPICA will offer a unique opportunity to better characterize the nature of polycyclic aromatic hydrocarbons (PAHs) and very small grains (VSGs), to better use…

星系天体物理 · 物理学 2015-05-14 O. Berne , C. Joblin , G. Mulas , A. G. G. M. Tielens , J. R. Goicoechea

The near-infrared (NIR) wavelength range offers some unique spectral features, and it is less prone to the extinction than the optical one. Recently, the first flux calibrated NIR library of cool stars from the NASA Infrared Telescope…

太阳与恒星天体物理 · 物理学 2015-03-13 Mary Cesetti , A. Pizzella , V. D. Ivanov , L. Morelli , E. M. Corsini , E. Dalla Bonta`

The intensity mapping of the [CII] 157.7 $\rm \mu$m fine-structure emission line represents an ideal experiment to probe star formation activity in galaxies, especially in those that are too faint to be individually detected. Here, we…

星系天体物理 · 物理学 2015-05-27 Bin Yue , Andrea Ferrara , Andrea Pallottini , Simona Gallerani , Livia Vallini

The far-infrared (far-IR) spectral window plays host to a wide range of spectroscopic diagnostics with which to study planetary disk systems and exoplanets at wavelengths completely blocked by the Earth atmosphere. These include the thermal…

地球与行星天体物理 · 物理学 2010-02-16 J. R. Goicoechea , B. Swinyard

Stellar population studies provide unique clues to constrain galaxy formation models. So far, detailed studies based on absorption line strengths have mainly focused on the optical spectral range although many diagnostic features are…

星系天体物理 · 物理学 2022-05-27 Elham Eftekhari , Alexandre Vazdekis , Francesco La Barbera

We present an overview of SPICA, the Space Infrared Telescope for Cosmology and Astrophysics, a world-class space observatory optimized for mid- and far-IR astronomy (from 5 to ~210um) with a cryogenically cooled ~3.2m telescope (<6 K). Its…

天体物理仪器与方法 · 物理学 2019-08-14 Javier R. Goicoechea , Takao Nakagawa

We present high spatial resolution, medium spectral resolution near-infrared (NIR) H- and K-band long-slit spectroscopy for a sample of 29 nearby (z < 0.01) inactive spiral galaxies, to study the composition of their NIR stellar…

宇宙学与河外天体物理 · 物理学 2015-06-05 J. K. Kotilainen , T. Hyvonen , J. Reunanen , V. D. Ivanov

We make use of our 'minimal' cold interstellar medium (ISM) emission line model that predicts the molecular and atomic line emission per unit dense, star-forming gas mass (Geach & Papadopoulos 2012; Paper I) to examine the utility of key…

宇宙学与河外天体物理 · 物理学 2015-06-05 Padelis P. Papadopoulos , James E. Geach

Mid- and far-infrared (IR) photometric and spectroscopic observations are fundamental to a full understanding of the dust-obscured Universe and the evolution of both star formation and black hole accretion in galaxies. In this work, using…

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