Sökning: onr:"swepub:oai:DiVA.org:su-220247" > Photometric study o...
Fältnamn | Indikatorer | Metadata |
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000 | 03822naa a2200613 4500 | |
001 | oai:DiVA.org:su-220247 | |
003 | SwePub | |
008 | 230822s2023 | |||||||||||000 ||eng| | |
024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-2202472 URI |
024 | 7 | a https://doi.org/10.1093/mnras/stad8412 DOI |
040 | a (SwePub)su | |
041 | a engb eng | |
042 | 9 SwePub | |
072 | 7 | a ref2 swepub-contenttype |
072 | 7 | a art2 swepub-publicationtype |
100 | 1 | a Deckers, M.4 aut |
245 | 1 0 | a Photometric study of the late-time near-infrared plateau in Type Ia supernovae |
264 | c 2023-03-20 | |
264 | 1 | b Oxford University Press (OUP),c 2023 |
338 | a print2 rdacarrier | |
520 | a We present an in-depth study of the late-time near-infrared plateau in Type Ia supernovae (SNe Ia), which occurs between 70 and 500 d. We double the existing sample of SNe Ia observed during the late-time near-infrared plateau with new observations taken with the Hubble Space Telescope, Gemini, New Technology Telescope, the 3.5-m Calar Alto Telescope, and the Nordic Optical Telescope. Our sample consists of 24 nearby SNe Ia at redshift < 0.025. We are able to confirm that no plateau exists in the Ks band for most normal SNe Ia. SNe Ia with broader optical light curves at peak tend to have a higher average brightness on the plateau in J and H, most likely due to a shallower decline in the preceding 100 d. SNe Ia that are more luminous at peak also show a steeper decline during the plateau phase in H. We compare our data to state-of-the-art radiative transfer models of nebular SNe Ia in the near-infrared. We find good agreement with the sub-Mch model that has reduced non-thermal ionization rates, but no physical justification for reducing these rates has yet been proposed. An analysis of the spectral evolution during the plateau demonstrates that the ratio of [Fe II] to [Fe III] contribution in a near-infrared filter determines the light curve evolution in said filter. We find that overluminous SNe decline slower during the plateau than expected from the trend seen for normal SNe Ia. | |
650 | 7 | a NATURVETENSKAPx Fysikx Astronomi, astrofysik och kosmologi0 (SwePub)103052 hsv//swe |
650 | 7 | a NATURAL SCIENCESx Physical Sciencesx Astronomy, Astrophysics and Cosmology0 (SwePub)103052 hsv//eng |
653 | a Surveys – supernovae: general | |
700 | 1 | a Graur, O.4 aut |
700 | 1 | a Maguire, K.4 aut |
700 | 1 | a Shingles, L.4 aut |
700 | 1 | a Brennan, Seán J.,d 1995-u Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC),University College Dublin, Ireland4 aut0 (Swepub:su)sebr3435 |
700 | 1 | a Anderson, J. P.4 aut |
700 | 1 | a Burke, J.4 aut |
700 | 1 | a Chen, T.-W.4 aut |
700 | 1 | a Galbany, L.4 aut |
700 | 1 | a Grayling, M. J. P.4 aut |
700 | 1 | a Gutiérrez, C. P.4 aut |
700 | 1 | a Harvey, L.4 aut |
700 | 1 | a Hiramatsu, D.4 aut |
700 | 1 | a Howell, D. A.4 aut |
700 | 1 | a Inserra, C.4 aut |
700 | 1 | a Killestein, T.4 aut |
700 | 1 | a McCully, C.4 aut |
700 | 1 | a Müller-Bravo, T. E.4 aut |
700 | 1 | a Nicholl, M.4 aut |
700 | 1 | a Newsome, M.4 aut |
700 | 1 | a Padilla Gonzalez, E.4 aut |
700 | 1 | a Pellegrino, C.4 aut |
700 | 1 | a Terreran, G.4 aut |
700 | 1 | a Terwel, J. H.4 aut |
700 | 1 | a Toy, M.4 aut |
700 | 1 | a Young, D. R.4 aut |
710 | 2 | a Stockholms universitetb Institutionen för astronomi4 org |
773 | 0 | t Monthly notices of the Royal Astronomical Societyd : Oxford University Press (OUP)g 521:3, s. 4414-4430q 521:3<4414-4430x 0035-8711x 1365-2966 |
856 | 4 | u https://doi.org/10.1093/mnras/stad841y Fulltext |
856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-220247 |
856 | 4 8 | u https://doi.org/10.1093/mnras/stad841 |
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