The rest-frame ultraviolet of superluminous supernovae - I. Potential as cosmological probes
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The rest-frame ultraviolet of superluminous supernovae - I. Potential as cosmological probes. / Khetan, Nandita; Cooke, Jeff; Branchesi, Marica.
I: Monthly Notices of the Royal Astronomical Society, Bind 521, Nr. 2, 14.03.2023, s. 2814-2832.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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T1 - The rest-frame ultraviolet of superluminous supernovae - I. Potential as cosmological probes
AU - Khetan, Nandita
AU - Cooke, Jeff
AU - Branchesi, Marica
PY - 2023/3/14
Y1 - 2023/3/14
N2 - Superluminous supernovae (SLSNe) have been detected to z similar to 4 and can be detected to z greater than or similar to 15 using current and upcoming facilities. SLSNe are extremely UV luminous, and hence objects at z greater than or similar to 7 are detected exclusively via their rest-frame UV using optical and infrared facilities. SLSNe have great utility in multiple areas of stellar and galactic evolution. Here, we explore the potential use of SLSNe type-I (SLSNe-I) as high-redshift cosmological distance indicators in their rest-frame UV. Using an SLSN-I sample in the redshift range 1 less than or similar to z less than or similar to 3, we investigate correlations between the peak absolute magnitude in a synthetic UV filter centred at 250 nm and the rise time, colour, and decline rate of SLSNe-I light curves. We observe a linear correlation between M-0(250) and the rise time with an intrinsic scatter of 0.29. Interestingly, this correlation is further tightened (sigma(int) approximate to 0.2) by eliminating those SLSNe that show a pre-peak bump in their light curve. This result hints at the possibility that 'bumpy' SLSNe could belong to a different population. Weak correlations are observed between the peak luminosity and colour indices. No relationship is found between the UV peak magnitude and the decline rate, in contrast to what is typically found in the optical band. The correlations found here are promising, and give encouraging insights into the use of SLSNe as cosmological probes at high redshifts using standardizing relations in the UV. We also highlight the importance of early, and consistent, photometric data for constraining the light-curve properties.
AB - Superluminous supernovae (SLSNe) have been detected to z similar to 4 and can be detected to z greater than or similar to 15 using current and upcoming facilities. SLSNe are extremely UV luminous, and hence objects at z greater than or similar to 7 are detected exclusively via their rest-frame UV using optical and infrared facilities. SLSNe have great utility in multiple areas of stellar and galactic evolution. Here, we explore the potential use of SLSNe type-I (SLSNe-I) as high-redshift cosmological distance indicators in their rest-frame UV. Using an SLSN-I sample in the redshift range 1 less than or similar to z less than or similar to 3, we investigate correlations between the peak absolute magnitude in a synthetic UV filter centred at 250 nm and the rise time, colour, and decline rate of SLSNe-I light curves. We observe a linear correlation between M-0(250) and the rise time with an intrinsic scatter of 0.29. Interestingly, this correlation is further tightened (sigma(int) approximate to 0.2) by eliminating those SLSNe that show a pre-peak bump in their light curve. This result hints at the possibility that 'bumpy' SLSNe could belong to a different population. Weak correlations are observed between the peak luminosity and colour indices. No relationship is found between the UV peak magnitude and the decline rate, in contrast to what is typically found in the optical band. The correlations found here are promising, and give encouraging insights into the use of SLSNe as cosmological probes at high redshifts using standardizing relations in the UV. We also highlight the importance of early, and consistent, photometric data for constraining the light-curve properties.
KW - supernovae: general
KW - cosmology: distance scale
KW - ultraviolet: general
KW - LIGHT CURVES
KW - LUMINOUS SUPERNOVA
KW - BAYESIAN-ANALYSIS
KW - SHOCK-BREAKOUT
KW - HOST GALAXIES
KW - EJECTED MASS
KW - 1ST RELEASE
KW - SPECTRA
KW - RISE
KW - EVOLUTION
U2 - 10.1093/mnras/stad661
DO - 10.1093/mnras/stad661
M3 - Journal article
VL - 521
SP - 2814
EP - 2832
JO - Royal Astronomical Society. Monthly Notices
JF - Royal Astronomical Society. Monthly Notices
SN - 0035-8711
IS - 2
ER -
ID: 345315423