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We study the radial distribution of the temperature of the warm dust and gas-to-dust mass ratios in a sample of 22 spiral galaxies. The heating capabilities of the diffuse interstellar radiation field (ISRF), based on Desert et al. model,…

天体物理学 · 物理学 2009-10-30 Y. D. Mayya , T. N. Rengarajan

This paper explores the effects of FUV radiation fields from external stars on circumstellar disk evolution. Disks residing in young clusters can be exposed to extreme levels of FUV flux from nearby OB stars, and observations show that…

太阳与恒星天体物理 · 物理学 2015-06-16 Kassandra R. Anderson , Fred C. Adams , Nuria Calvet

We analyse the far-infrared properties of $\sim$ 5,000 star-forming galaxies at $z<4.5$, drawn from the deepest, super-deblended catalogues in the GOODS-N and COSMOS fields. We develop a novel panchromatic SED fitting algorithm,…

One of the keys to interpreting the character and evolution of interstellar matter in the galaxy is understanding the distribution of the low density hot (10^5 K -10^6 K) phase of the interstellar medium (ISM). This phase is much more…

天体物理学 · 物理学 2009-10-30 Eric J. Korpela , Stuart Bowyer , Jerry Edelstein

We present magnetohydrodynamic simulations of star formation in the multiphase interstellar medium to quantify the impact of non-ionising far-ultraviolet (FUV) radiation within the \textsc{Silcc Project} simulation framework. Our study…

Protoplanetary discs, when externally irradiated by Far Ultraviolet (FUV) photons from OBA-type stars, lose material through photoevaporative winds, reducing the amount of material available to form planets. Understanding the link between…

Far-ultraviolet (FUV) and far-infrared (FIR) luminosity functions (LFs) of galaxies show a strong evolution from $z = 0$ to $z = 1$, but the FIR LF evolves much stronger than the FUV one. The FUV is dominantly radiated from newly formed…

宇宙学与河外天体物理 · 物理学 2015-06-05 Tsutomu T. Takeuchi , Akane Sakurai , Fang-Ting Yuan , Veronique Buat , Denis Burgarella

Far Ultraviolet radiation has been recognized as the main source of heating of the neutral interstellar gas, and, as a consequence, it determines whether the thermal balance of the neutral gas results in cold ($T\sim 50 - 100 K$) clouds…

天体物理学 · 物理学 2009-11-07 Antonio Parravano , David J. Hollenbach , Christopher F. McKee

A sample of local galaxies for which far infrared and uv fluxes are available is used to estimate the characteristic dust extinction in galaxies and to test whether standard dust properties are plausible. Assuming galaxies can be…

天体物理学 · 物理学 2009-11-07 Michael Rowan-Robinson

Star-forming galaxies (SFGs) adhere to a surprisingly tight scaling relation of dust attenuation parameterized by the infrared excess (IRX=$L_{\rm IR}/L_{\rm UV}$), being jointly determined by the star formation rate (SFR), galaxy size…

Far-ultraviolet photons from OB-type massive stars regulate the heating, ionization, and chemistry of much of the neutral interstellar gas in star-forming galaxies. The interaction of FUV radiation and interstellar matter takes place in…

星系天体物理 · 物理学 2022-09-21 Javier R. Goicoechea , Sara Cuadrado , Franck Le Petit

Interstellar dust plays a central role in shaping the detailed structure of the interstellar medium, thus strongly influencing star formation and galaxy evolution. Dust extinction provides one of the main pillars of our understanding of…

We address the problem of modeling the far-infrared (FIR) spectrum and deriving the star-formation rate (SFR) and the dust mass of spiral galaxies. We use the realistic physical model of Popescu et al. (2000) to describe the overall…

天体物理学 · 物理学 2009-11-10 A. Misiriotis , I. E. Papadakis , N. D. Kylafis , J. Papamastorakis

Infrared (IR) dust emission from galaxies is frequently used as an indicator of star formation rate (SFR). However, the effect of the dust-to-gas ratio (i.e., amount of the dust) on the conversion law from IR luminosity to SFR has not so…

天体物理学 · 物理学 2009-10-31 H. Hirashita , A. K. Inoue , H. Kamaya , H. Shibai

Most low-mass stars form in stellar clusters that also contain massive stars, which are sources of far-ultraviolet (FUV) radiation. Theoretical models predict that this FUV radiation produces photo-dissociation regions (PDRs) on the…

星系天体物理 · 物理学 2024-03-04 Olivier Berné , Emilie Habart , Els Peeters , Ilane Schroetter , Amélie Canin , Ameek Sidhu , Ryan Chown , Emeric Bron , Thomas J. Haworth , Pamela Klaassen , Boris Trahin , Dries Van De Putte , Felipe Alarcón , Marion Zannese , Alain Abergel , Edwin A. Bergin , Jeronimo Bernard-Salas , Christiaan Boersma , Jan Cami , Sara Cuadrado , Emmanuel Dartois , Daniel Dicken , Meriem Elyajouri , Asunción Fuente , Javier R. Goicoechea , Karl D. Gordon , Lina Issa , Christine Joblin , Olga Kannavou , Baria Khan , Ozan Lacinbala , David Languignon , Romane Le Gal , Alexandros Maragkoudakis , Raphael Meshaka , Yoko Okada , Takashi Onaka , Sofia Pasquini , Marc W. Pound , Massimo Robberto , Markus Röllig , Bethany Schefter , Thiébaut Schirmer , Thomas Simmer , Benoit Tabone , Alexander G. G. M. Tielens , Sílvia Vicente , Mark G. Wolfire , Isabel Aleman , Louis Allamandola , Rebecca Auchettl , Giuseppe Antonio Baratta , Clément Baruteau , Salma Bejaoui , Partha P. Bera , John H. Black , Francois Boulanger , Jordy Bouwman , Bernhard Brandl , Philippe Brechignac , Sandra Brünken , Mridusmita Buragohain , Andrew Burkhardt , Alessandra Candian , Stéphanie Cazaux , Jose Cernicharo , Marin Chabot , Shubhadip Chakraborty , Jason Champion , Sean W. J. Colgan , Ilsa R. Cooke , Audrey Coutens , Nick L. J. Cox , Karine Demyk , Jennifer Donovan Meyer , Cécile Engrand , Sacha Foschino , Pedro García-Lario , Lisseth Gavilan , Maryvonne Gerin , Marie Godard , Carl A. Gottlieb , Pierre Guillard , Antoine Gusdorf , Patrick Hartigan , Jinhua He , Eric Herbst , Liv Hornekaer , Cornelia Jäger , Eduardo Janot-Pacheco , Michael Kaufman , Francisca Kemper , Sarah Kendrew , Maria S. Kirsanova , Collin Knight , Sun Kwok , Álvaro Labiano , Thomas S. -Y. Lai , Timothy J. Lee , Bertrand Lefloch , Franck Le Petit , Aigen Li , Hendrik Linz , Cameron J. Mackie , Suzanne C. Madden , Joëlle Mascetti , Brett A. McGuire , Pablo Merino , Elisabetta R. Micelotta , Jon A. Morse , Giacomo Mulas , Naslim Neelamkodan , Ryou Ohsawa , Roberta Paladini , Maria Elisabetta Palumbo , Amit Pathak , Yvonne J. Pendleton , Annemieke Petrignani , Thomas Pino , Elena Puga , Naseem Rangwala , Mathias Rapacioli , Alessandra Ricca , Julia Roman-Duval , Evelyne Roueff , Gaël Rouillé , Farid Salama , Dinalva A. Sales , Karin Sandstrom , Peter Sarre , Ella Sciamma-O'Brien , Kris Sellgren , Matthew J. Shannon , Adrien Simonnin , Sachindev S. Shenoy , David Teyssier , Richard D. Thomas , Aditya Togi , Laurent Verstraete , Adolf N. Witt , Alwyn Wootten , Nathalie Ysard , Henning Zettergren , Yong Zhang , Ziwei E. Zhang , Junfeng Zhen

The relative abundance of the dust grain types in the interstellar medium (ISM) is directly linked to physical quantities that trace the evolution of galaxies. We study the dust properties of the whole disc of M33 at spatial scales of ~170…

The radial profiles of gas, stars, and far ultraviolet radiation in 20 dwarf Irregular galaxies are converted to stability parameters and scale heights for a test of the importance of two-dimensional (2D) instabilities in promoting star…

星系天体物理 · 物理学 2015-06-03 Bruce G. Elmegreen , Deidre A. Hunter

We have cross-correlated Far Infrared (IRAS) and UV (FOCA) observations of galaxies to construct a sample of FIR selected galaxies with a UV observation at 0.2 microns. The FIR and UV properties of this sample are compared to the mean…

天体物理学 · 物理学 2019-08-17 V. Buat , J. Donas , B. Milliard , C. Xu

The ratio between far-ultraviolet (FUV) and infrared (IR) luminosity densities from z=0 to z=1 is discussed by using the luminosity functions (LFs) of both wavelengths. The FUV LF (z=0-1) based on GALEX has been reported by Arnouts et al.…

天体物理学 · 物理学 2009-11-11 Tsutomu T. Takeuchi , Veronique Buat , Denis Burgarella

The far-infrared (FIR) emissivity of dust is an important parameter characterizing the physical properties of the grains. With the availability of stellar databases and far-infrared data from Infrared Space Observatory (ISO) it is possible…

天体物理学 · 物理学 2009-11-11 Cs. Kiss , P. Abraham , R. J. Laureijs , A. Moor , S. M. Birkmann
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