منابع مشابه
The Nuclear Starburst in Ngc 253
We have obtained long-slit spectra of NGC 253 in the J, H, K, and N bands, broadband images in the J, H, and K s bands, narrowband images centered at the wavelengths of Brγ and H 2 (1,0)S(1), and imaging spectroscopy centered on [Ne II](12.8µm). We have subtracted a composite stellar spectrum from the galaxy spectrum to measure faint emission lines which otherwise would be buried in the complic...
متن کاملISOCAM view of the starburst galaxies M 82 , NGC 253 , and NGC 1808 ⋆
We present results of mid-infrared λ = 5.0 − 16.5 µm spectrophotometric imaging of the starburst galaxies M 82, NGC 253, and NGC 1808 from the ISOCAM instrument on board the Infrared Space Observatory. The mid-infrared spectra of the three galaxies are very similar in terms of features present. The λ > ∼ 11 µm continuum attributed to very small dust grains (VSGs) exhibits a large spread in inte...
متن کاملXMM - Newton observations of the diffuse X - ray emission in the starburst galaxy NGC 253 ⋆
Aims. We present a study of the diffuse X-ray emission in the halo and the disc of the starburst galaxy NGC 253. Methods. After removing point-like sources, we analysed XMM-Newton images, hardness ratio maps and spectra from several regions in the halo and the disc. We introduce a method to produce vignetting corrected images from the EPIC pn data, and we developed a procedure that allows a cor...
متن کاملBeppoSAX detection of the Fe K line in the nearby starburst galaxy NGC 253
We present BeppoSAX results on the nearby star-burst galaxy NGC 253. Although extended, a large fraction of the X-ray emission comes from the nuclear region. Preliminary analysis of the LECS/MECS/PDS ∼ 0.2-60 keV data from the central 4 region indicates that the continuum is well fitted by two thermal models: a " soft " component with kT ∼ 0.9 keV, and a " hard " component with kT ∼ 6 keV absor...
متن کاملDense Molecular Gas Tracers in the Outflow of the Starburst Galaxy NGC 253
We present a detailed study of a molecular outflow feature in the nearby starburst galaxy NGC 253 using ALMA. We find that this feature is clearly associated with the edge of NGC 253ʼs prominent ionized outflow, has a projected length of ∼300 pc, with a width of ∼50 pc, and a velocity dispersion of ∼40 km s, which isconsistent with an ejection from the disk about 1 Myr ago. The kinematics of t...
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ژورنال
عنوان ژورنال: Proceedings of the International Astronomical Union
سال: 2017
ISSN: 1743-9213,1743-9221
DOI: 10.1017/s1743921317009280