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SUPERSTARS SIGNED

Type Ia supernovae: from explosions to cosmology

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 SUPERSTARS project word cloud

Explore the words cloud of the SUPERSTARS project. It provides you a very rough idea of what is the project "SUPERSTARS" about.

sn    diagnostics    breakthroughs    curves    enrichment    pan    dwarf    mpc    atlas    subtle    evolution    obtain    analysed    generation    made    unprecedented    stellar    start    explosion    instrumental    observations    violent    follow    he    combined    tidal    interaction    timescales    me    material    spectral    dark    deaths    surprising    concluded    night    puts    20000    diversity    gt    normal    zoo    75    white    play    events    2021    feedback    constraining    predicted    precision    lt    zero    times    energy    disruption    explosions    discovery    time    progenitor    mystery    vital    samples    machine    day    mechanisms    question    becomes    data    density    limited    starrs    type    sky    volume    hours    supernovae    dwarfs    cosmology    progenitors    transients    search    galaxy    coverage    transient    circumstellar    incredibly    luminous    binaries    shell    rapid    exotic    degrees    spectroscopic    curve    cadence    lsst    central    differences    team    square    unveil    ia    explode    mergers    companion    luminosities    controversial    position    uncovered    surveys    sne    chemical    light   

Project "SUPERSTARS" data sheet

The following table provides information about the project.

Coordinator
THE PROVOST, FELLOWS, FOUNDATION SCHOLARS & THE OTHER MEMBERS OF BOARD OF THE COLLEGE OF THE HOLY & UNDIVIDED TRINITY OF QUEEN ELIZABETH NEAR DUBLIN 

Organization address
address: College Green
city: DUBLIN
postcode: 2
website: www.tcd.ie

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country Ireland [IE]
 Total cost 1˙876˙496 €
 EC max contribution 1˙876˙496 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2017-STG
 Funding Scheme ERC-STG
 Starting year 2018
 Duration (year-month-day) from 2018-06-01   to  2023-05-31

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    THE PROVOST, FELLOWS, FOUNDATION SCHOLARS & THE OTHER MEMBERS OF BOARD OF THE COLLEGE OF THE HOLY & UNDIVIDED TRINITY OF QUEEN ELIZABETH NEAR DUBLIN IE (DUBLIN) coordinator 1˙768˙506.00
2    THE QUEEN'S UNIVERSITY OF BELFAST UK (BELFAST) participant 107˙989.00

Map

 Project objective

Type Ia supernovae (SNe Ia) are the incredibly luminous deaths of white dwarfs in binaries. They play a vital role in chemical enrichment, galaxy feedback, stellar evolution, and were instrumental in the discovery of dark energy. However, what are the progenitor systems of SNe Ia, and how they explode remains a mystery. My recent work has concluded the controversial result that there may be more than one way to produce SNe Ia. As SN Ia cosmology samples reach higher precision, understanding subtle differences in their properties becomes increasingly important. A surprising diversity in white-dwarf explosions has also been uncovered, with a much wider-than-expected range in luminosities, light-curve timescales and spectral properties. A key open question is ‘What explosion mechanisms result in normal SNe Ia compared to more exotic transients?’

My team will use novel early-time observations (within hours of explosion) of 100 SNe Ia in a volume-limited search (<75 Mpc). The targets will come from the ATLAS and Pan-STARRS surveys that will provide unprecedented sky coverage and cadence (>20000 square degrees, up to four times a night). These data will be combined with key progenitor diagnostics of each SN (companion interaction, circumstellar material, central density studies). The observed zoo of transients predicted to result from white-dwarf explosions (He-shell explosions, tidal-disruption events, violent mergers) will also be investigated, with the goal of constraining the mechanisms by which white dwarfs can explode. My access to ATLAS/Pan-STARRS and my previous experience puts me in a unique position to obtain ‘day-zero’ light curves, rapid spectroscopic follow-up, and late-time observations. The data will be analysed with detailed spectral modelling to unveil the progenitors and diversity of SNe Ia. This project is timely with the potential for significant breakthroughs to be made before the start of the next-generation ‘transient machine’, LSST in ~2021.

 Publications

year authors and title journal last update
List of publications.
2018 S. J. Prentice, K. Maguire, S. J. Smartt, M. R. Magee, P. Schady, S. Sim, T.-W. Chen, P. Clark, C. Colin, M. Fulton, O. McBrien, D. O’Neill, K. W. Smith, C. Ashall, K. C. Chambers, L. Denneau, H. A. Flewelling, A. Heinze, T. W.-S. Holoien, M. E. Huber, C. S. Kochanek, P. A. Mazzali, J. L. Prieto, A. Rest, B. J. Shappee, B. Stalder, K. Z. Stanek, M. D. Stritzinger, T. A. Thompson, J. L. Tonry
The Cow: Discovery of a Luminous, Hot, and Rapidly Evolving Transient
published pages: L3, ISSN: 2041-8213, DOI: 10.3847/2041-8213/aadd90
The Astrophysical Journal 865/1 2020-04-24
2019 M. R. Magee, S. A. Sim, R. Kotak, K. Maguire, A. Boyle
Detecting the signatures of helium in type Iax supernovae
published pages: A102, ISSN: 0004-6361, DOI: 10.1051/0004-6361/201834420
Astronomy & Astrophysics 622 2020-04-24

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