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  1. Why do type Ia supernovas produce more iron than type II

    Jun 13, 2017 · So later, when the type Ia was becoming more common, the - now younger - stars were formed with higher iron abundances. Why are type Ia supernova's better for iron …

  2. supernova - How often do Type Ia supernovae occur? - Astronomy …

    Jan 22, 2020 · Type Ia supernova are used as standard candles. But they also are transient events. This means that to determine the distance of a galaxy using supernovae, you have to …

  3. Difference between Supernova Type Ia and Nova

    Jul 18, 2021 · 6 What is the difference between Supernova Type Ia and Nova? Base on a web search, they seem to have a similar formation process, as they are both white dwarfs in a …

  4. Supernovae - NASA

    There is one type (called type Ia) for which this brightening and dimming is very regular: when the maximum brightness at a distance of 1 light-year is calculated (using the known distance and …

  5. Why do astronomers use supernova to measure distance in space?

    The bomb goes off in exactly the same way with the same amount of identical explosive. That means to a good approximation, measuring the apparent brightness of a type Ia supernova …

  6. What is left behind when a Type 1A supernova occurs?

    Jan 30, 2025 · No, the white dwarf (or dwarfs, in the case of a double-degenerate supernova) is completely destroyed: With Type Ia supernovas, the exploding stars are completely destroyed. …

  7. The two channels of Type Ia SNe and their use as standard candles

    Jan 25, 2022 · Question. If only <20% of Type Ia SNe are single-degenerate and have a fixed luminosity, then how can we use them as standard candles at all? I get the impression from …

  8. White dwarf supernova luminosity - Astronomy Stack Exchange

    Apr 26, 2024 · I understand that the mass limit for a white dwarf is 1.4 solar masses, and therefore approaching it would cause a white dwarf (type Ia) supernova, and thus it is a …

  9. Cepheids/supernova vs redshift (for estimating distances)

    May 24, 2025 · The doubt is whether our model for type 1a supernovae is correct. We see some supernovae have significant hydrogen lines in their (redshifted) spectrum, and some don't …

  10. supernova - How close does a white dwarf need to be to pull mass …

    Oct 6, 2024 · I am thinking about Type Ia supernovas and under what conditions a white dwarf companion might be a sign of a future supernova of this type. I offer my initial thoughts below …