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Related papers: MSX Observations of Diffuse UV Emission in Orion

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We have used observations taken under the FUSE S405/S505 channel realignment program to explore the diffuse FUV (1000 - 1200 \AA) radiation field. Of the 71 independent locations in that program, we have observed a diffuse signal in 32,…

Astrophysics · Physics 2009-11-10 Jayant Murthy , David J. Sahnow

We present spectra of the diffuse FUV (900 -- 1200 \AA) emission from a region near the Orion Nebula: the first high resolution spectra of the diffuse background radiation. These observations were made using serendipitous FUSE observations…

Astrophysics · Physics 2009-11-10 Jayant Murthy , David J. Sahnow , R. C. Henry

We present the results of a wide-area mapping of the far-infrared continuum emission toward the Orion complex by using a Japanese balloon-borne telescope. The 155-um continuum emission was detected over a region of 1.5 deg^2 around the KL…

We have studied the diffuse radiation in the surroundings of M42 using photometric data from the Galaxy Evolution Explorer (GALEX) in the far-ultraviolet (FUV) and infrared observations of the AKARI space telescope. The main source of the…

Astrophysics of Galaxies · Physics 2018-03-21 Gautam Saikia , P. Shalima , Rupjyoti Gogoi

We present here the continuum submillimeter maps of the molecular cloud around the M42 Nebula in the Orion region. These have been obtained in four wavelength bands (200, 260, 360 and 580 microns) with the ProNaOS two meter balloon-borne…

We report on a preliminary analysis of the diffuse gamma-ray observations of local giant molecular clouds Orion A and B with the Large Area Telescope onboard the Fermi Gamma-ray Space Telescope. The gamma-ray emission of the clouds is well…

High Energy Astrophysical Phenomena · Physics 2019-08-13 Akira Okumura , Tune Kamae

We present integral field spectroscopy of two selected zones in the Orion Nebula obtained with the Potsdam Multi-Aperture Spectrophotometer (PMAS), covering the optical spectral range from 3500 to 7200 A and with a spatial resolution of 1".…

Astrophysics of Galaxies · Physics 2015-05-28 A. Mesa-Delgado , M. Núñez-Díaz , C. Esteban , L. López-Martín , J. García-Rojas

We have modelled diffuse far-ultraviolet spectrum observed by FUSE near M42 as scattering of starlight from the Trapezium stars by dust in front of the nebula. The dust grains are known to be anomalous in Orion with Rv = 5.5 and these are…

Astrophysics · Physics 2009-11-11 P. Shalima , N. V. Sujatha , Jayant Murthy , Richard Conn Henry , David J. Sahnow

We present mid-IR images of a 15'x15' field in the south-west part of the Andromeda galaxy M 31 obtained with the ISOCAM camera on board ISO. We also present a 20" resolution far-UV image of a larger field at 200 nm obtained with the…

Astrophysics · Physics 2007-05-23 L. Pagani , J. Lequeux , D. Cesarsky , J. Donas , B. Milliard , L. Loinard , M. Sauvage

We present a study of the high-energy diffuse emission observed toward Orion by the Energetic Gamma-Ray Experiment Telescope (EGRET) on the Compton Gamma-Ray Observatory. The total exposure by EGRET in this region has increased by more than…

Astrophysics · Physics 2009-10-31 S. W. Digel , E. Aprile , S. D. Hunter , R. Mukherjee , F. Xu

We report on sensitive far-infrared observations of $^{12}$CO pure rotational transitions in the OMC-1 core of Orion. The lines were observed with the Long Wavelength Spectrometer (LWS) in the grating mode on board the Infrared Space…

We report the discovery of diffuse hard (1-5 keV) X-ray emission around Jupiter in a deep 160 ks Suzaku XIS data. The emission is distributed over ~16x8 Jovian radius and spatially associated with the radiation belts and the Io Plasma…

Earth and Planetary Astrophysics · Physics 2015-05-14 Yuichiro Ezoe , Kumi Ishikawa , Takaya Ohashi , Yoshizumi Miyoshi , Naoki Terada , Yasunobu Uchiyama , Hitoshi Negoro

Diffuse far-ultraviolet (FUV: 1370-1670 A) flux from the Taurus molecular cloud region has been observed with the SPEAR/FIMS imaging spectrograph. An FUV continuum map of the Taurus region, similar to the visual extinction maps, shows a…

Diffuse far-ultraviolet stellar emission scattered by dust grains has been observed in a region near the Orion Nebula. In addition to the scattered stellar continuum, emission and absorption features produced by molecular hydrogen have been…

Astrophysics · Physics 2009-11-13 K. France , S. R. McCandliss

We present the first results of an observational programme undertaken to map the fine structure line emission of singly ionized carbon ([CII] 157.7409 micron) over extended regions using a Fabry Perot spectrometer newly installed at the…

We have imaged the enigmatic radio source-I (Orion-I) in the Orion-KL nebula with the VLA at 43 GHz with 34 mas angular resolution. The continuum emission is highly elongated and is consistent with that expected from a nearly edge-on disk.…

Astrophysics · Physics 2009-06-23 M. J. Reid , K. M. Menten , L. J. Greenhill , C. J. Chandler

Large scale far-infrared (FIR) observations of the Orion complex at 205 and 138 micron are presented with an aim of studying the distribution of cold (< 25 K) dust. The maps in these FIR bands extend over approximately 3600 sq. arcmin and…

Astrophysics · Physics 2009-10-31 B. Mookerjea , S. K. Ghosh , T. N. Rengarajan , S. N. Tandon , R. P. Verma

We present the first observations of diffuse radiation in the far ultraviolet (1000 -- 1150 \AA) from the Large Magellanic Cloud based on observations made with the {\it Far Ultraviolet Spectroscopic Explorer}. The fraction of the total…

Astrophysics of Galaxies · Physics 2015-05-19 Ananta C. Pradhan , Amit Pathak , Jayant Murthy

We have mapped the [C I] emission at 492 GHz toward the supernova remnant Cas A. We detect [C I] emission from the periphery of the diffuse Photon Dominated Region (PDR) covering the disk of Cas A, as traced by the carbon recombination…

Astrophysics · Physics 2009-11-11 B. Mookerjea , N. G. Kantharia , D. A. Roshi , M. Masur , ;

The HH 1/2 system has been observed with the two spectrometers on board the Infrared Space Observatory. Diffuse [CII] 158um emission indicate the presence of a Photo-Dissociation Region (PDR) which is only in part due to the external Far-UV…

Astrophysics · Physics 2009-11-07 Sergio Molinari , Alberto Noriega-Crespo
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