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Related papers: Decoding NGC 628 with radiative transfer methods

200 papers

Infrared carbon stars without visible counterparts are generally known as extreme carbon stars. We have selected a subset of these stars with absorption features in the 10-13 $\mu$m range, which has been tentatively attributed to silicon…

We have carried out a detailed modelling of the dust heating and emission in the nearby, starbursting dwarf galaxy NGC 4214. Due to its proximity and the great wealth of data from the UV to the millimeter range (from GALEX, HST, {\it…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-03 U. Lisenfeld , I. Hermelo , M. Relano , R. Tuffs , J. Fischera , B. Groves , C. Popescu

Motivated by new sounding-rocket wide-field polarimetric images of the Large Magellanic Cloud, we have used a three-dimensional Monte Carlo radiation transfer code to investigate the escape of near-ultraviolet photons from young stellar…

Astrophysics · Physics 2016-08-30 Andrew A. Cole , Kenneth Wood , Kenneth H. Nordsieck

We infer the large-scale source parameters of dusty galaxies from their observed spectral energy distributions (SEDs) using the analytic radiative transfer methodology presented in Chakrabarti & McKee (2005). For local ultra-luminous…

Astrophysics · Physics 2009-11-13 Sukanya Chakrabarti , Christopher F. McKee

B[e] stars are hot stars surrounded by circumstellar gas and dust responsible for the presence of emission lines and IR-excess in their spectra. How dust can be formed in this highly illuminated and diluted environment remains an open…

Solar and Stellar Astrophysics · Physics 2015-05-14 A. Meilland , S. Kanaan , M. Borges Fernandes , O. Chesneau , F. Millour , Ph. Stee , B. Lopez

We present a new model to compute the effects of dust on the integrated spectral properties of galaxies, based on an idealized prescription of the main features of the interstellar medium (ISM). The model includes the ionization of HII…

Astrophysics · Physics 2009-10-31 S. Charlot , S. Michael Fall

We report spatially resolved (FWHM$\sim3.8-4.6"$) mid-IR imaging observations of the planetary nebula (PN) NGC 7027 taken with the 2.5-m telescope aboard the Stratospheric Observatory for Infrared Astronomy (SOFIA). Images of NGC 7027 were…

Astrophysics of Galaxies · Physics 2016-12-21 R. M. Lau , M. Werner , R. Sahai , M. E. Ressler

We report the detection of a ring of warm dust in the edge-on disk surrounding HD 32297 with the Gemini-N/MICHELLE mid-infrared imager. Our N'-band image shows elongated structure consistent with the orientation of the scattered-light disk.…

Astrophysics · Physics 2009-11-13 Michael P. Fitzgerald , Paul G. Kalas , James R. Graham

We reinvestigate the UV spectrum of NGC1535 by means of recently developed fully line-blanketed non-LTE models. These new models account for the wind in spherical geometry while handling the atomic data in a very similar way to the TLUSTY…

Astrophysics · Physics 2007-05-23 L. Koesterke , K. Werner , J. W. Kruk , T. Lanz

Establishing precisely how stars and interstellar medium distribute within the central 100 pc area around an AGN, down to the pc scale, is key for understanding how the very final transfer of matter from kpc scale to the sub-parsec size of…

Astrophysics of Galaxies · Physics 2019-05-29 Daniel Rouan , Lucas Grosset , Damien Gratadour

We present new Herschel-derived images of warm dust in the Andromeda Galaxy, M31, with unprecedented spatial resolution (~ 30 pc), column density accuracy, and constraints on the three-dimensional distributions of dust temperature and dust…

Astrophysics of Galaxies · Physics 2018-08-08 K. A. Marsh , A. P. Whitworth , M. W. L. Smith , O. Lomax , S. A. Eales

We have followed up two ultra-diffuse galaxies (UDGs), detected adjacent to stellar streams, with Hubble Space Telescope (HST) imaging and HI mapping with the Jansky Very Large Array (VLA) in order to investigate the possibility that they…

We have observed NGC 1316 (Fornax A) with the ROSAT HRI. In this paper, we present the results of these observations and we complement them with the spectral analysis of the archival PSPC data. The spectral properties suggest the presence…

Astrophysics · Physics 2009-10-30 Dong-Woo Kim , Giuseppina Fabbiano , Glen Mackie

We present new multi-frequency radio continuum imaging of the dwarf starburst galaxy NGC 625 obtained with the Very Large Array. Data at 20, 6, and 3.6 cm reveal global continuum emission dominated by free-free emission, with only mild…

Astrophysics · Physics 2009-11-10 John M. Cannon , Evan D. Skillman

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,…

Astrophysics · Physics 2009-10-30 Y. D. Mayya , T. N. Rengarajan

In a galaxy cluster, the evolution of spiral galaxies depends on their cluster environment. Ram pressure due to the rapid motion of a spiral galaxy within the hot intracluster medium removes the galaxy's interstellar medium from the outer…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 C. Pappalardo , A. Lancon , B. Vollmer , P. Ocvirk , S. Boissier , A. Boselli

The face-on spiral galaxy M74 (NGC 628) was observed by XMM on 2002 February 2. In total, 21 sources are found in the inner 5' from the nucleus (after rejection of a few sources associated to foreground stars). Hardness ratios suggest that…

Astrophysics · Physics 2009-11-07 Roberto Soria , Albert K. H. Kong

Following from our recent work, we present results of a detailed analysis of a representative sample of nearby galaxies. The photometric parameters of the morphological components are obtained from bulge-disk decompositions, using GALFIT…

Astrophysics of Galaxies · Physics 2023-06-16 Bogdan A. Pastrav

We measure the radial profile of the 12CO(1-0) to H_2 conversion factor (Xco) in NGC 628. The H\alpha emission from the VENGA integral field spectroscopy is used to map the star formation rate surface density (\Sigma_{SFR}). We estimate the…