Fe K LINE COMPLEX IN THE NUCLEAR REGION OF NGC 253
نویسندگان
چکیده
منابع مشابه
BeppoSAX 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...
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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...
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We present observations of a massive star cluster near the nuclear region of the nearby starburst galaxy NGC 253. The peak of near-infrared emission, which is spatially separated by 4 from the kinematic center of the galaxy, is coincident with a super star cluster whose properties we examine with low-resolution (R ∼ 1,200) infrared CTIO spectroscopy and optical/near-infrared HST imaging. Extinc...
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We report the detection of 1720 and 1612 MHz OH ground–state satellite line maser regions in the starburst galaxy NGC 253. We find ten compact maser features all of which are located along the narrow ridge of bright radio continuum emission within the central 10 square arcseconds of the nucleus. The compact OH features appear physically associated with regions of dense molecular gas, supernova ...
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We present high-resolution spectral line and continuum VLBI and VLA observations of the nuclear region of NGC 253 at 22 GHz. While the water vapor masers in this region were detected on arcsecond and milliarcsecond scales, we could not detect any compact continuum emission with a 5σ upper limit of ∼ 1 mJy. The observations reveal that the water maser emission is not related to a possible low-lu...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2011
ISSN: 2041-8205,2041-8213
DOI: 10.1088/2041-8205/742/2/l31