The Twisting X-Ray Isophotes of the Elliptical Galaxy NGC 720
نویسندگان
چکیده
منابع مشابه
Chandra X-ray Observations of the X-ray Faint Elliptical Galaxy Ngc 4697
A Chandra ACIS S3 observation of the X-ray faint elliptical galaxy NGC 4697 resolves much of the X-ray emission (61% of the counts from within one effective radius) into 90 point sources, of which ∼80 are low mass X-ray binaries (LMXBs) associated with this galaxy. The dominance of LMXBs indicates that X-ray faint early-type galaxies have lost much of their interstellar gas. On the other hand, ...
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We investigate X-ray isophote twists created by triaxiality differences between the luminous stellar distributions and the dark halos in elliptical galaxies. For a typically oblate luminous galaxy embedded in a more prolate halo formed by dissipationless collapse, the triaxiality difference of ∆T ≃ 0.7 leads to typical isophote twists of 〈∆ψX〉 ≃ 16 ± 19 at 3 stellar effective radii. In a model ...
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With NASA’s Chandra X-ray Observatory, we have accumulated over two days of data from NGC 4697, the nearest optically luminous, X-ray faint elliptical galaxy. These observations provide one of the deepest views of low-mass X-ray binaries (LMXBs; binary stars, with one normal star with M.MSun and either a neutron star or black hole, which emit profuse amounts of X-rays) in an elliptical galaxy. ...
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The results from an X-ray spectroscopic study of the giant elliptical galaxy NGC 5044 in the center of a galaxy group are presented. The line dominated soft X-ray spectra (mainly Fe-L and O VIII Lyα) from the diffuse gas are resolved for the first time in this system with the Reflection Grating Spectrometers on-board XMM-Newton and provide a strong constraint on the temperature structure. The s...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 1996
ISSN: 0004-637X,1538-4357
DOI: 10.1086/177680