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<blockquote style="position: relative; padding-left: 55px;"><section><a href="https://astrodon.social/users/kellylepo/statuses/111063794910776974">Kelly Lepo (kellylepo@astrodon.social)'s status on Friday, 15-Sep-2023 02:19:14 JST</a><a href="https://astrodon.social/@kellylepo" title="kellylepo@astrodon.social"><img src="https://gnusocial.jp/avatar/28639-48-20221116180105.webp" width="48" height="48" alt="Kelly Lepo" style="position: absolute; left: 0; top: 0;">Kelly Lepo</a><div><a href="https://astrodon.social/@kellylepo/111060377197460371" rel="in-reply-to">in reply to</a></div></section><article><p>Lot of neat stuff about JWST observations of supernovas from Tea Temim this morning, including an update on the Cassiopeia A supernova remnant observations.</p><p>What are those bubbles in the area known as the "green monster?" The team's current thinking is that in the past, dense clumps of ejecta shot through the gas near the star, and now interactions between the gas and the supernova shocks are highlighting the "bullet hole" structures.</p><p><a href="https://astrodon.social/tags/JWSTYearOne" rel="tag">#JWSTYearOne</a></p></article><footer><a rel="bookmark" href="https://gnusocial.jp/conversation/2052104#notice-4043192">In conversation</a><time datetime="2023-09-15T02:19:14+09:00" title="Friday, 15-Sep-2023 02:19:14 JST">about a year ago</time> <span>from <span><a href="https://astrodon.social/@kellylepo/111063794910776974" rel="external" title="Sent from astrodon.social via ActivityPub">astrodon.social</a></span></span><a href="https://astrodon.social/@kellylepo/111063794910776974">permalink</a><h4>Attachments</h4><ol><li><label><a rel="external" href="https://gnusocial.jp/attachment/1521059">Cassiopeia A
PI: MilisavljevicA roughly square image is rotated clockwise about 45 degrees, with solid black in the corners on the top left, top right, bottom left, and bottom right. Within the image is a circular-shaped nebula with complex structure. On the circle’s exterior, particularly at the top and left of the image, lie curtains of material glowing orange. Interior to this outer shell lies a ring of mottled filaments of bright pink studded with clumps and knots. At center right, a greenish loop extends from the right side of the ring into the central cavity. A white box highlights a portion of the green loop. Translucent wisps of blue, green, and red appear throughout the image.Blue: F560W, Light Blue: F770W, Cyan: F1000W, Green: F1130W, Yellow: F1280W, Orange: F1800W, Red: F2100W+F2550WJWST Observations:
* Ejecta abundance &amp; structure (asymmetries, clumping)
* Cold ejecta in the interior
* Dust formation and destruction 
* Molecule formation (poster by J. Rho showing CO fundamental bands)
* Structure of the surrounding CSM
 * Nature of the compact object  Milisavljevic et al. 2023, in prepCredits: NASA, ESA, CSA, D. Milisavljévjc (Purdue), T. Temim (Princeton), I. De Looze (Ghent University). Image Processing: J. DePasquale (STScl)</a></label><br><a href="https://cdn.masto.host/astrodonsocial/media_attachments/files/111/063/747/298/567/368/original/af607b54b5dc7f3c.png" rel="external">https://cdn.masto.host/astrodonsocial/media_attachments/files/111/063/747/298/567/368/original/af607b54b5dc7f3c.png</a></li><li><label><a rel="external" href="https://gnusocial.jp/attachment/1521060">A magnified portion of the green loop structure showing a series of bubble-like structures, which look like raindrops hitting a puddle.Supernova ejecta in the remnant interior?
Supernova interaction with the surrounding CSM?
IFU spectroscopy:
 - Warm dust
- Low line velocities
Correlates with X-ray gas with CSM abundances 
De Looze et al. 2023, in prep</a></label><br><a href="https://cdn.masto.host/astrodonsocial/media_attachments/files/111/063/747/345/787/244/original/1090d5a1179c01bb.png" rel="external">https://cdn.masto.host/astrodonsocial/media_attachments/files/111/063/747/345/787/244/original/1090d5a1179c01bb.png</a></li></ol></footer></blockquote>

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Kelly Lepo (kellylepo@astrodon.social)'s status on Friday, 15-Sep-2023 02:19:14 JST Kelly Lepo
in reply to
Lot of neat stuff about JWST observations of supernovas from Tea Temim this morning, including an update on the Cassiopeia A supernova remnant observations.
What are those bubbles in the area known as the "green monster?" The team's current thinking is that in the past, dense clumps of ejecta shot through the gas near the star, and now interactions between the gas and the supernova shocks are highlighting the "bullet hole" structures.
#JWSTYearOne
In conversationabout a year ago from astrodon.socialpermalink
Attachments
1. Cassiopeia A PI: Milisavljevic A roughly square image is rotated clockwise about 45 degrees, with solid black in the corners on the top left, top right, bottom left, and bottom right. Within the image is a circular-shaped nebula with complex structure. On the circle’s exterior, particularly at the top and left of the image, lie curtains of material glowing orange. Interior to this outer shell lies a ring of mottled filaments of bright pink studded with clumps and knots. At center right, a greenish loop extends from the right side of the ring into the central cavity. A white box highlights a portion of the green loop. Translucent wisps of blue, green, and red appear throughout the image. Blue: F560W, Light Blue: F770W, Cyan: F1000W, Green: F1130W, Yellow: F1280W, Orange: F1800W, Red: F2100W+F2550W JWST Observations: * Ejecta abundance & structure (asymmetries, clumping) * Cold ejecta in the interior * Dust formation and destruction * Molecule formation (poster by J. Rho showing CO fundamental bands) * Structure of the surrounding CSM * Nature of the compact object Milisavljevic et al. 2023, in prep Credits: NASA, ESA, CSA, D. Milisavljévjc (Purdue), T. Temim (Princeton), I. De Looze (Ghent University). Image Processing: J. DePasquale (STScl)
  https://cdn.masto.host/astrodonsocial/media_attachments/files/111/063/747/298/567/368/original/af607b54b5dc7f3c.png
2. A magnified portion of the green loop structure showing a series of bubble-like structures, which look like raindrops hitting a puddle. Supernova ejecta in the remnant interior? Supernova interaction with the surrounding CSM? IFU spectroscopy: - Warm dust - Low line velocities Correlates with X-ray gas with CSM abundances De Looze et al. 2023, in prep
  https://cdn.masto.host/astrodonsocial/media_attachments/files/111/063/747/345/787/244/original/1090d5a1179c01bb.png

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