Dynamic Structure of the Horsehead Nebula
نویسندگان
چکیده
منابع مشابه
Density structure of the Horsehead nebula photo-dissociation region
We present high angular resolution images of the H2 1-0 S(1) line emission obtained with the Son of ISAAC (SOFI) at the New Technology Telescope (NTT) of the Horsehead nebula. These observations are analysed in combination with Hα line emission, aromatic dust, CO and dust continuum emissions. The Horsehead nebula illuminated by the O9.5V star σ Ori (χ ∼ 60) presents a typical photodissociation ...
متن کاملAromatic emission from the ionised mane of the Horsehead nebula
Context. This work is conducted as part of the “SPECPDR” program dedicated to the study of very small particles and chemistry in photodissociation regions with the Spitzer Space Telescope (SST). Aims. We study the evolution of the Aromatic Infrared Bands (AIBs) emitters across the illuminated edge of the Horsehead nebula and especially their survival and properties in the HII region. Methods. W...
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We present a series of monitoring observations of the Crab Nebula with the Chandra X-ray Observatory, focusing on the temporal evolution of the structure. This series of 8 observations, spanning a period of approximately six months, shows the dynamic nature of the inner Xray structures. We detected outward moving “wisps” from the recently discovered inner ring seen in optical observations. We a...
متن کاملSCUBA observations of the Horsehead nebula – what did the horse swallow?
We present observations taken with the Submillimetre Common-User Bolometer Array (SCUBA) on the James Clerk Maxwell Telescope (JCMT) of the Horsehead Nebula in Orion (B33), at wavelengths of 450 and 850 μm. We see bright emission from that part of the cloud associated with the photon-dominated region (PDR) at the ‘top’ of the horse’s head, which we label B33-SMM1. We characterise the physical p...
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ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 1987
ISSN: 0074-1809
DOI: 10.1017/s0074180900095073