Spatially Resolved 12CO(2–1)/12CO(1–0) in the Starburst Galaxy NGC 253: Assessing Optical Depth to Constrain the Molecular Mass Outflow Rate
نویسندگان
چکیده
منابع مشابه
Dense 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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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 کامل8 - 13 μ m spectroscopy of NGC 253 : a spatially resolved starburst
NGC 253 is a nearby spiral galaxy that is currently undergoing a nuclear burst of star formation in a 100 pc diameter region. We present spatially resolved 8–13 μm lowresolution spectra at four positions along the ridge of 8–13 μm emission. We find that the relative strengths of the ionic, dust emission features, and dust continuum emission vary with position in the galaxy but can be accounted ...
متن کاملHigh - resolution X - ray spectroscopy and imaging of the nuclear outflow of the starburst galaxy NGC 253 ⋆
Aims. Using XMM-Newton data, we have aimed to study the nuclear outflow of the nearby starburst galaxy NGC 253 in X-rays with respect to its morphology and to spectral variations along the outflow. Methods. We analysed XMM-Newton RGS spectra, RGS brightness profiles in cross-dispersion direction, narrow band RGS and EPIC images and EPIC PN brightness profiles of the nuclear region and of the ou...
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...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2018
ISSN: 1538-4357
DOI: 10.3847/1538-4357/aadf32