Image de couverture de livre

Shockingly Bright Warm Carbon Monoxide Molecular Features in the Supernova Remnant Cassiopeia A Revealed by JWST

Fuente: arXiv

Enregistré dans:

Détails bibliographiques
Auteurs principaux:	Rho, J., Park, S. -H., Arendt, R., Matsuura, M., Milisavljevic, D., Temim, T., De Looze, I., Blair, W. P., Rest, A., Fox, O., Ravi, A. P., Koo, B. -C., Barlow, M., Burrows, A., Chevalier, R., Clayton, G., Fesen, R., Fransson, C., Fryer, C., Gomez, H. L., Janka, H. -T., Kirchschlarger, F., Laming, J. M., Orlando, S., Patnaude, D., Pavlov, G., Plucinsky, P., Posselt, B., Priestley, F., Raymond, J., Sartorio, N., Schmidt, F., Slane, P., Smith, N., Sravan, N., Vink, J., Weil, K., Wheeler, J., Yoon, S. C.
Format:	Preprint
Publié:	2024
Sujets:	Astrophysics of Galaxies High Energy Astrophysical Phenomena Solar and Stellar Astrophysics
Accès en ligne:	Acceder al recurso
Tags:	Ajouter un tag Pas de tags, Soyez le premier à ajouter un tag!

_version_	1866913380053286912
author	Rho, J. Park, S. -H. Arendt, R. Matsuura, M. Milisavljevic, D. Temim, T. De Looze, I. Blair, W. P. Rest, A. Fox, O. Ravi, A. P. Koo, B. -C. Barlow, M. Burrows, A. Chevalier, R. Clayton, G. Fesen, R. Fransson, C. Fryer, C. Gomez, H. L. Janka, H. -T. Kirchschlarger, F. Laming, J. M. Orlando, S. Patnaude, D. Pavlov, G. Plucinsky, P. Posselt, B. Priestley, F. Raymond, J. Sartorio, N. Schmidt, F. Slane, P. Smith, N. Sravan, N. Vink, J. Weil, K. Wheeler, J. Yoon, S. C.
author_facet	Rho, J. Park, S. -H. Arendt, R. Matsuura, M. Milisavljevic, D. Temim, T. De Looze, I. Blair, W. P. Rest, A. Fox, O. Ravi, A. P. Koo, B. -C. Barlow, M. Burrows, A. Chevalier, R. Clayton, G. Fesen, R. Fransson, C. Fryer, C. Gomez, H. L. Janka, H. -T. Kirchschlarger, F. Laming, J. M. Orlando, S. Patnaude, D. Pavlov, G. Plucinsky, P. Posselt, B. Priestley, F. Raymond, J. Sartorio, N. Schmidt, F. Slane, P. Smith, N. Sravan, N. Vink, J. Weil, K. Wheeler, J. Yoon, S. C.
contents	We present JWST NIRCam (F356W and F444W filters) and MIRI (F770W) images and NIRSpec- IFU spectroscopy of the young supernova remnant Cassiopeia A (Cas A). We obtained the data as part of a JWST survey of Cas A. The NIRCam and MIRI images map the spatial distributions of synchrotron radiation, Ar-rich ejecta, and CO on both large and small scales, revealing remarkably complex structures. The CO emission is stronger at the outer layers than the Ar ejecta, which indicates the reformation of CO molecules behind the reverse shock. NIRSpec-IFU spectra (3 - 5.5 microns) were obtained toward two representative knots in the NE and S fields. Both regions are dominated by the bright fundamental rovibrational band of CO in the two R and P branches, with strong [Ar VI] and relatively weaker, variable strength ejecta lines of [Si IX], [Ca IV], [Ca V] and [Mg IV]. The NIRSpec-IFU data resolve individual ejecta knots and filaments spatially and in velocity space. The fundamental CO band in the JWST spectra reveals unique shapes of CO, showing a few tens of sinusoidal patterns of rovibrational lines with pseudo-continuum underneath, which is attributed to the high-velocity widths of CO lines. The CO also shows high J lines at different vibrational transitions. Our results with LTE modeling of CO emission indicate a temperature of 1080 K and provide unique insight into the correlations between dust, molecules, and highly ionized ejecta in supernovae, and have strong ramifications for modeling dust formation that is led by CO cooling in the early Universe.
format	Preprint
id	arxiv_https___arxiv_org_abs_2406_03685
institution	arXiv
publishDate	2024
record_format	arxiv
spellingShingle	Shockingly Bright Warm Carbon Monoxide Molecular Features in the Supernova Remnant Cassiopeia A Revealed by JWST Rho, J. Park, S. -H. Arendt, R. Matsuura, M. Milisavljevic, D. Temim, T. De Looze, I. Blair, W. P. Rest, A. Fox, O. Ravi, A. P. Koo, B. -C. Barlow, M. Burrows, A. Chevalier, R. Clayton, G. Fesen, R. Fransson, C. Fryer, C. Gomez, H. L. Janka, H. -T. Kirchschlarger, F. Laming, J. M. Orlando, S. Patnaude, D. Pavlov, G. Plucinsky, P. Posselt, B. Priestley, F. Raymond, J. Sartorio, N. Schmidt, F. Slane, P. Smith, N. Sravan, N. Vink, J. Weil, K. Wheeler, J. Yoon, S. C. Astrophysics of Galaxies High Energy Astrophysical Phenomena Solar and Stellar Astrophysics We present JWST NIRCam (F356W and F444W filters) and MIRI (F770W) images and NIRSpec- IFU spectroscopy of the young supernova remnant Cassiopeia A (Cas A). We obtained the data as part of a JWST survey of Cas A. The NIRCam and MIRI images map the spatial distributions of synchrotron radiation, Ar-rich ejecta, and CO on both large and small scales, revealing remarkably complex structures. The CO emission is stronger at the outer layers than the Ar ejecta, which indicates the reformation of CO molecules behind the reverse shock. NIRSpec-IFU spectra (3 - 5.5 microns) were obtained toward two representative knots in the NE and S fields. Both regions are dominated by the bright fundamental rovibrational band of CO in the two R and P branches, with strong [Ar VI] and relatively weaker, variable strength ejecta lines of [Si IX], [Ca IV], [Ca V] and [Mg IV]. The NIRSpec-IFU data resolve individual ejecta knots and filaments spatially and in velocity space. The fundamental CO band in the JWST spectra reveals unique shapes of CO, showing a few tens of sinusoidal patterns of rovibrational lines with pseudo-continuum underneath, which is attributed to the high-velocity widths of CO lines. The CO also shows high J lines at different vibrational transitions. Our results with LTE modeling of CO emission indicate a temperature of 1080 K and provide unique insight into the correlations between dust, molecules, and highly ionized ejecta in supernovae, and have strong ramifications for modeling dust formation that is led by CO cooling in the early Universe.
title	Shockingly Bright Warm Carbon Monoxide Molecular Features in the Supernova Remnant Cassiopeia A Revealed by JWST
topic	Astrophysics of Galaxies High Energy Astrophysical Phenomena Solar and Stellar Astrophysics
url	https://arxiv.org/abs/2406.03685