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Judy Schmidt / 772 items

N 3 B 198 C 0 E Aug 23, 2019 F Aug 23, 2019
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An x-ray only image of the core of NGC 1365.

A combined x-ray+visible light image from CXO and HST is here: flic.kr/p/2h4jmwT

An HST-only image is here: flic.kr/p/2h3KPpa

Chandra data: ACIS .30-7.00 keV
Observation IDs: 3554, 6868-6873

North is 19° clockwise from up.

Tags:   x-rays Chandra CXO high energy spiral galaxy active nucleus AGN black hole dust gas x-ray

N 10 B 219 C 0 E Aug 23, 2019 F Aug 23, 2019
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A composite utilizing both HST and CXO data to visualize x-ray emission from the galaxy's nucleus. Its bright central supermassive black hole is actively accreting matter and the surrounding disk is glowing hot with x-rays. Star formation encircling the nucleus also heats interstellar gas to create a diffuse, nebular glow further out from the nucleus.

An article describing the observations used to create this image that serendipitously caught a blob of dust eclipsing the black hole is here: chandra.harvard.edu/photo/2007/ngc1365/

A Chandra-only image is here: flic.kr/p/2h4jXkk
A wider, HST-only image is here: flic.kr/p/2h3KPpa

This image was possible thanks to data from the following Chandra and HST proposals:
Solving the Enigmas of the Nearby Seyfert/Starburst Galaxy NGC1365 with Chandra ACIS-S
Active Galaxies and Quasars
PHANGS-HST: Linking Stars and Gas throughout the Scales of Star Formation

Chandra data:
Violet / Magenta overlay: ACIS .30-7.00 keV
Observation IDs: 3554, 6868-6873

HST data:
Red: WFC3/UVIS F814W
Green: WFC3/UVIS F555W
Blue: WFC3/UVIS F438W/F336W/F275W

North is 19° clockwise from up.

Tags:   x-ray Chandra spiral galaxy dust black hole star formation hot gas

N 20 B 282 C 1 E Aug 22, 2019 F Aug 22, 2019
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A view of the central portion of The Great Barred Spiral Galaxy from Hubble. This was captured as part of a joint survey with ALMA to study many aspects of young star clusters to better understand star formation. This survey is great for producing high quality images of galaxies because it includes five filters: one near-infrared, one visible green, one visible blue, and two near-ultraviolet. It's possible to create an image with some stunning colors with this extended spectrum, and you don't even have to fiddle with the saturation.

PHANGS-HST: Linking Stars and Gas throughout the Scales of Star Formation

Red: WFC3/UVIS F814W
Green: WFC3/UVIS F555W
Blue: WFC3/UVIS F438W/F336W/F275W

North is 19° clockwise from up.

Tags:   HST Hubble barred spiral galaxy dust gas star formation nuv nir near-infrared near-ultraviolet visible

N 16 B 607 C 1 E Aug 15, 2019 F Aug 14, 2019
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Decided to go ahead and post this. It's partly illustration and partly real data. Hubble has grisms that can be used to create spectra for entire fields. I colorized the spectra and overlaid them onto a regular image to show the grism doing its work. Of particular note is how the jet near the top of the image is not a smooth spectrum, but a bumpy one with strong emission lines.

Note the colors do not correspond to real visible light colors. This is near-infrared data, but the same concepts apply to it.

This particular area of the sky shows a young stellar object in a dusty cloud near HH34.

idae05020

Tags:   grism HST Hubble near-infrared HH34 jet YSO Herbig-Haro

N 30 B 808 C 1 E Aug 10, 2019 F Aug 10, 2019
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Fine details are revealed in the windblown cloud of dust and gas surrounding a nascent star. LDN (Lynds Catalog of Dark Nebulae) 1471 is a rather large region of dust, and this is just a tiny part where a star is forming. To the lower left and upper right of the star are also some Herbig-Haro objects, which are puffs of matter emitted from the poles of young stellar objects as they accrete matter through the disks surrounding them. Most of the stuff goes into the star, but some of it ends up sent out along the polar axes at some incredible speeds. I have asked how this happens, and apparently it has something to do with magnetic fields. My bank of knowledge is not equipped to understand such topics further.

I have colorized a single near-infrared image that would otherwise be grayscale.

All channels: WFC3/IR F160W

A Snapshot WFC3 IR Survey of Spitzer/Hershel-Identified Protostars in Nearby Molecular Clouds

North is 47.39° counter-clockwise from up.

Tags:   YSO young stellar object nebula cloud cone wind LDN dust gas accretion Herbig Haro Herbig-Haro


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