by APOD Robot » Tue Jul 25, 2023 4:06 am
The Eagle Nebula with X-ray Hot Stars
Explanation: What do the famous
Eagle Nebula star pillars look like in X-ray light? To find out, NASA's orbiting
Chandra X-ray Observatory peered in and through these interstellar mountains of star formation. It was found that in
M16 the
dust pillars themselves do not emit many
X-rays, but a lot of small-but-bright X-ray sources became evident. These sources are shown as bright dots on the
featured image which is a composite of exposures from
Chandra (
X-rays),
XMM (X-rays),
JWST (
infrared),
Spitzer (infrared),
Hubble (
visible), and the
VLT (visible). What
stars produce these X-rays remains a
topic of research, but some are
hypothesized to be hot,
recently-formed, low-mass stars, while others are thought to be hot, older, high-mass stars. These
X-ray hot stars are scattered around the frame -- the
previously identified Evaporating Gaseous Globules (EGGS) seen in
visible light are not currently hot enough to emit X-rays.
[url=https://apod.nasa.gov/apod/ap230725.html] [img]https://apod.nasa.gov/apod/calendar/S_230725.jpg[/img] [size=150]The Eagle Nebula with X-ray Hot Stars[/size][/url]
[b] Explanation: [/b] What do the famous [url=https://apod.nasa.gov/apod/ap221004.html]Eagle Nebula[/url] star pillars look like in X-ray light? To find out, NASA's orbiting [url=https://chandra.harvard.edu/]Chandra X-ray Observatory[/url] peered in and through these interstellar mountains of star formation. It was found that in [url=https://apod.nasa.gov/apod/ap221206.html]M16[/url] the [url=https://apod.nasa.gov/apod/ap201206.html]dust pillars[/url] themselves do not emit many [url=https://science.nasa.gov/ems/11_xrays]X-rays[/url], but a lot of small-but-bright X-ray sources became evident. These sources are shown as bright dots on the [url=https://chandra.si.edu/photo/2023/chandrawebb2/more.html]featured image[/url] which is a composite of exposures from [url=https://www.nasa.gov/mission_pages/chandra/main/index.html]Chandra[/url] ([url=https://science.nasa.gov/ems/11_xrays]X-rays[/url]), [url=https://www.cosmos.esa.int/web/xmm-newton]XMM[/url] (X-rays), [url=https://webb.nasa.gov/]JWST[/url] ([url=https://science.nasa.gov/ems/07_infraredwaves]infrared[/url]), [url=https://www.nasa.gov/mission_pages/spitzer/main/index.html]Spitzer[/url] (infrared), [url=https://www.nasa.gov/mission_pages/hubble/main/index.html]Hubble[/url] ([url=https://science.nasa.gov/ems/09_visiblelight]visible[/url]), and the [url=https://www.eso.org/public/teles-instr/paranal-observatory/vlt/]VLT[/url] (visible). What [url=https://science.nasa.gov/astrophysics/focus-areas/how-do-stars-form-and-evolve]stars[/url] produce these X-rays remains a [url=https://ui.adsabs.harvard.edu/abs/2007ApJ...654..347L/abstract]topic of research[/url], but some are [url=https://i.insider.com/55a67a7a371d22ce178b6624?width=1200&format=jpeg]hypothesized to be[/url] hot, [url=https://en.wikipedia.org/wiki/Young_stellar_object]recently-formed, low-mass stars[/url], while others are thought to be hot, older, high-mass stars. These [url=https://apod.nasa.gov/apod/ap010920.html]X-ray hot stars[/url] are scattered around the frame -- the [url=https://apod.nasa.gov/apod/ap061022.html]previously identified[/url] [url=https://en.wikipedia.org/wiki/Evaporating_gaseous_globule]Evaporating Gaseous Globules[/url] (EGGS) seen in [url=https://apod.nasa.gov/apod/ap080915.html]visible light[/url] are not currently hot enough to emit X-rays.
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