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  1. Article

    Open Access

    A radio-detected type Ia supernova with helium-rich circumstellar material

    Type Ia supernovae (SNe Ia) are thermonuclear explosions of degenerate white dwarf stars destabilized by mass accretion from a companion star1, but the nature of their progenitors remains poorly understood. A way...

    Erik C. Kool, Joel Johansson, Jesper Sollerman, Javier Moldón, Takashi J. Moriya… in Nature (2023)

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    Article

    Infant-phase reddening by surface Fe-peak elements in a normal type Ia supernova

    Type Ia supernovae are thermonuclear explosions of white dwarf stars. They play a central role in the chemical evolution of the Universe and are an important measure of cosmological distances. However, outstan...

    Yuan Qi Ni, Dae-Sik Moon, Maria R. Drout, Abigail Polin, David J. Sand… in Nature Astronomy (2022)

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    Article

    Direct evidence for shock-powered optical emission in a nova

    Classical novae are thermonuclear explosions that occur on the surfaces of white dwarf stars in interacting binary systems1. It has long been thought that the luminosity of classical novae is powered by continued...

    Elias Aydi, Kirill V . Sokolovsky, Laura Chomiuk, Elad Steinberg… in Nature Astronomy (2020)

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    Chapter and Conference Paper

    Radio Monitoring of Supernova 2001ig: The First Year

    Supernova 2001ig in NGC 7424 has been observed with the Australia Telescope Compact Array at ∼2 week intervals since its discovery, making this the best-studied Type IIb radio supernova since SN 1993J.We prese...

    Stuart D. Ryder, Elaine Sadler, Ravi Subrahmanyan, Kurt W. Weiler… in Cosmic Explosions (2005)

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    Article

    Circumnuclear Star Formation in M100

    Near-infrared (JHK) images of the nucleus of the barred spiral galaxy M100 (NGC 4321) have been obtained using a high-bandwidth tip-tilt secondary and fast guider system on the 3.8 m United Kingdom Infrared Teles...

    Stuart D. Ryder, Johan H. Knapen in Astrophysics and Space Science (2001)

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    Chapter

    A Near-IR Spectral Atlas of IR-Selected Nearby Spirals

    We have secured long-slit spectra with R~440, covering the K, H and J bands, of 28, 26 and 13 nearby galaxies respectively. The target list comprises complete samples, flux-limited at 25 µm, of ‘normal’ (control)...

    Timothy G. Hawarden, Stuart D. Ryder… in Toward a New Millennium in Galaxy Morpholo… (2000)

  7. No Access

    Article

    A Near-IR Spectral Atlas of IR-Selected Nearby Spirals

    We have secured long-slit spectra with R∼ 440, covering the K, H and J bands, of 28, 26 and 13 nearby galaxies respectively. The target list comprises complete samples, flux-limited at 25 μm, of `normal' (cont...

    Timothy G. Hawarden, Stuart D. Ryder, Richard J. Massey… in Astrophysics and Space Science (1999)