# High Angular Resolution ALMA Images of Dust and Molecules in the SN 1987A Ejecta

@article{Cigan2019HighAR,
title={High Angular Resolution ALMA Images of Dust and Molecules in the SN 1987A Ejecta},
author={Phil J. Cigan and Mikako Matsuura and Haley L. Gomez and R{\'e}my Indebetouw and F. J. Abell{\'a}n and Michael Gabler and Anita M. S. Richards and Dennis Alp and Timothy A. Davis and Hans-Thomas Janka and Jason Spyromilio and Michael J. Barlow and David N. Burrows and Eli Dwek and Claes Fransson and Bryan M. Gaensler and Josefin Larsson and Patrice Bouchet and Peter Lundqvist and J. M. Marcaide and C-Y. Ng and Sangwook Park and Patrick F. Roche and Jacco Th. van Loon and J. Craig Wheeler and Giovanna Zanardo},
journal={The Astrophysical Journal},
year={2019},
volume={886}
}
• Published 7 October 2019
• Physics, Geology
• The Astrophysical Journal
We present high angular resolution (∼80 mas) ALMA continuum images of the SN 1987A system, together with CO J = 2 1, J = 6 5, and SiO J = 5 4 to J = 7 6 images, which clearly resolve the ejecta (dust continuum and molecules) and ring (synchrotron continuum) components. Dust in the ejecta is asymmetric and clumpy, and overall the dust fills the spatial void seen in Hα images, filling that region with material from heavier elements. The dust clumps generally fill the space where CO J = 6 5 is…
41 Citations

### Thermal Emission and Radioactive Lines, but No Pulsar, in the Broadband X-Ray Spectrum of Supernova 1987A

• Physics
• 2021
Supernova 1987A offers a unique opportunity to study an evolving supernova in unprecedented detail over several decades. The X-ray emission is dominated by interactions between the ejecta and the

### AlFoCS  + F3D – II. Unexpectedly low gas-to-dust ratios in the Fornax galaxy cluster

• Physics
Monthly Notices of the Royal Astronomical Society
• 2021
We combine observations from Atacama Large Millimeter/submillimeter Array (ALMA), Australia Telescope Compact Array, Multi Unit Spectroscopic Explorer (MUSE), and Herschel to study gas-to-dust

### Observational Limits on the Early-time Dust Mass in SN 1987A

• Physics, Geology
The Astrophysical Journal
• 2021
In recent years, dust masses of a few tenths of a solar mass have been found in the expanding ejecta of a number of core-collapse supernovae. How dust forms in such quantities remains poorly

### Final Spitzer IRAC Observations of the Rise and Fall of SN 1987A

• Physics
The Astrophysical Journal
• 2020
Spitzer's final Infrared Array Camera observations of SN 1987A show the 3.6 and 4.5 μm emission from the equatorial ring (ER) continues a period of steady decline. Deconvolution of the images reveals

### Down but Not Out: Properties of the Molecular Gas in the Stripped Virgo Cluster Early-type Galaxy NGC 4526

• Physics
The Astrophysical Journal
• 2022
We present Atacama Large Millimeter/submillimeter Array data on the 3 mm continuum emission, CO isotopologues (12CO, 13CO, and C18O), and high-density molecular tracers (HCN, HCO+, HNC, HNCO, CS, CN,

### NS 1987A in SN 1987A

• Physics
The Astrophysical Journal
• 2020
The possible detection of a compact object in the remnant of SN 1987A presents an unprecedented opportunity to follow its early evolution. The suspected detection stems from an excess of infrared

### Luminous Late-time Radio Emission from Supernovae Detected by the Karl G. Jansky Very Large Array Sky Survey (VLASS)

• Physics
The Astrophysical Journal Letters
• 2021
We present a population of 19 radio-luminous supernovae (SNe) with emission reaching L ν ∼ 1026–1029 erg s−1 Hz−1 in the first epoch of the Very Large Array Sky Survey (VLASS) at 2–4 GHz. Our sample

### Herschel Photometric Observations of Little Things Dwarf Galaxies

• Physics
The Astronomical Journal
• 2021
We present here far-infrared photometry of galaxies in a sample that is relatively unexplored at these wavelengths: low-metallicity dwarf galaxies with moderate star formation rates. Four dwarf

### Indication of a Pulsar Wind Nebula in the Hard X-Ray Emission from SN 1987A

• Physics
• 2021
Since the day of its explosion, SN 1987A (SN87A) was closely monitored with the aim to study its evolution and to detect its central compact relic. The detection of neutrinos from the supernova

### Constraining early-time dust formation in core-collapse supernovae

• Physics, Geology
Monthly Notices of the Royal Astronomical Society
• 2020
There is currently a severe discrepancy between theoretical models of dust formation in core-collapse supernovae (CCSNe), which predict $\gtrsim 0.01 \, {\rm M}_\odot$ of ejecta dust forming within

## References

SHOWING 1-10 OF 167 REFERENCES

### SN 1987A after 18 Years: Mid-Infrared Gemini and Spitzer Observations of the Remnant

• Physics
• 2006
Using the Gemini South 8 m telescope, we obtained high-resolution 11.7 and 18.3 μm mid-IR images of SN 1987A on day 6526 since the explosion. All the emission arises from the equatorial ring. Nearly

### The dust mass in Cassiopeia A from a spatially resolved Herschel analysis

• Physics, Geology
• 2017
Theoretical models predict that core-collapse supernovae (CCSNe) can be efficient dust producers (0.1–1.0 M⊙), potentially accounting for most of the dust production in the early Universe.

### DUST PRODUCTION AND PARTICLE ACCELERATION IN SUPERNOVA 1987A REVEALED WITH ALMA

• Physics
• 2013
Supernova (SN) explosions are crucial engines driving the evolution of galaxies by shock heating gas, increasing the metallicity, creating dust, and accelerating energetic particles. In 2012 we used

### A STUBBORNLY LARGE MASS OF COLD DUST IN THE EJECTA OF SUPERNOVA 1987A

• Physics
• 2014
We present new Herschel photometric and spectroscopic observations of Supernova 1987A, carried out in 2012. Our dedicated photometric measurements provide new 70 μm data and improved imaging quality

### Dust Condensation in the Ejecta of SN 1987A

• Physics, Geology
• 1989
Work at ESO on the formation of dust from newly synthesized elements in the ejecta of SN 1987A began in late January when blue shifts of ≃ 600 km s-1 were found for various optical emission lines in

### Dust in historical Galactic Type Ia supernova remnants with Herschel★

• Physics, Geology
Monthly Notices of the Royal Astronomical Society
• 2012
The origin of interstellar dust in galaxies is poorly understood, particularly the relative contributions from supernovae and the cool stellar winds of low-intermediate-mass stars. Recently, large

### The X-Ray Remnant of SN 1987A

• Physics
• 2000
We present high-resolution Chandra observations of the remnant of SN 1987A in the Large Magellanic Cloud. The high angular resolution of the Chandra X-Ray Observatory permits us to resolve the X-ray

### THE EVOLUTION OF DUST MASS IN THE EJECTA OF SN 1987A

• Physics, Geology
• 2015
We present a new analysis of the infrared (IR) emission from the ejecta of SN 1987A covering days 615, 775, 1144, 8515, and 9090 after the explosion. We show that the observations are consistent with

### A dust twin of Cas A: cool dust and 21 μm silicate dust feature in the supernova remnant G54.1+0.3

• Physics, Geology
Monthly Notices of the Royal Astronomical Society
• 2018
We present infrared (IR) and submillimeter observations of the Crab-like supernova remnant (SNR) G54.1+0.3 including 350μm (SHARC-II), 870μm (LABOCA), 70, 100, 160, 250, 350, 500μm (Herschel) and

### THE INFLUENCE OF SUPERNOVA REMNANTS ON THE INTERSTELLAR MEDIUM IN THE LARGE MAGELLANIC CLOUD SEEN AT 20–600 μm WAVELENGTHS

• Physics
• 2015
We present the analysis of supernova remnants (SNRs) in the Large Magellanic Cloud (LMC) and their influence on the environment at far-infrared (FIR) and submillimeter wavelengths. We use new