FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W3105603963> ?p ?o ?g. }

• W3105603963 endingPage "89" @default.
• W3105603963 startingPage "89" @default.
• W3105603963 abstract "We present 888 visual-wavelength spectra of 122 nearby type II supernovae (SNe II) obtained between 1986 and 2009, and ranging between 3 and 363 days post-explosion. In this first paper, we outline our observations and data reduction techniques, together with a characterization based on the spectral diversity of SNe II. A statistical analysis of the spectral matching technique is discussed as an alternative to nondetection constraints for estimating SN explosion epochs. The time evolution of spectral lines is presented and analyzed in terms of how this differs for SNe of different photometric, spectral, and environmental properties: velocities, pseudo-equivalent widths, decline rates, magnitudes, time durations, and environment metallicity. Our sample displays a large range in ejecta expansion velocities, from ∼9600 to ∼1500 km s−1 at 50 days post-explosion with a median value of 7300 km s−1. This is most likely explained through differing explosion energies. Significant diversity is also observed in the absolute strength of spectral lines, characterized through their pseudo-equivalent widths. This implies significant diversity in both temperature evolution (linked to progenitor radius) and progenitor metallicity between different SNe II. Around 60% of our sample shows an extra absorption component on the blue side of the P-Cygni profile (Cachito feature) between 7 and 120 days since explosion. Studying the nature of Cachito, we conclude that these features at early times (before ∼35 days) are associated with Si ii , while past the middle of the plateau phase they are related to high velocity (HV) features of hydrogen lines." @default.
• W3105603963 created "2020-11-23" @default.
• W3105603963 creator A5001235890 @default.
• W3105603963 creator A5001382808 @default.
• W3105603963 creator A5004776069 @default.
• W3105603963 creator A5006180737 @default.
• W3105603963 creator A5009374040 @default.
• W3105603963 creator A5009503265 @default.
• W3105603963 creator A5010914716 @default.
• W3105603963 creator A5017671909 @default.
• W3105603963 creator A5022259389 @default.
• W3105603963 creator A5028322180 @default.
• W3105603963 creator A5036170427 @default.
• W3105603963 creator A5039189637 @default.
• W3105603963 creator A5044714529 @default.
• W3105603963 creator A5048517806 @default.
• W3105603963 creator A5050993892 @default.
• W3105603963 creator A5051144522 @default.
• W3105603963 creator A5059156687 @default.
• W3105603963 creator A5067479214 @default.
• W3105603963 creator A5074014174 @default.
• W3105603963 creator A5075596553 @default.
• W3105603963 creator A5077055351 @default.
• W3105603963 creator A5081979210 @default.
• W3105603963 creator A5085123408 @default.
• W3105603963 creator A5086015383 @default.
• W3105603963 creator A5086918735 @default.
• W3105603963 creator A5089132014 @default.
• W3105603963 date "2017-11-21" @default.
• W3105603963 modified "2023-10-06" @default.
• W3105603963 title "Type II Supernova Spectral Diversity. I. Observations, Sample Characterization, and Spectral Line Evolution" @default.
• W3105603963 cites W1885094116 @default.
• W3105603963 cites W1972232176 @default.
• W3105603963 cites W1981466136 @default.
• W3105603963 cites W1983633573 @default.
• W3105603963 cites W1986175619 @default.
• W3105603963 cites W1989531472 @default.
• W3105603963 cites W1991577188 @default.
• W3105603963 cites W1994970090 @default.
• W3105603963 cites W2002298511 @default.
• W3105603963 cites W2004564101 @default.
• W3105603963 cites W2010547898 @default.
• W3105603963 cites W2013149592 @default.
• W3105603963 cites W2013978456 @default.
• W3105603963 cites W2016691221 @default.
• W3105603963 cites W2017211670 @default.
• W3105603963 cites W2019295635 @default.
• W3105603963 cites W2029209235 @default.
• W3105603963 cites W2029343094 @default.
• W3105603963 cites W2034171132 @default.
• W3105603963 cites W2035042618 @default.
• W3105603963 cites W2039663338 @default.
• W3105603963 cites W2042378333 @default.
• W3105603963 cites W2042533498 @default.
• W3105603963 cites W2044922085 @default.
• W3105603963 cites W2046550784 @default.
• W3105603963 cites W2047167041 @default.
• W3105603963 cites W2047511827 @default.
• W3105603963 cites W2053876856 @default.
• W3105603963 cites W2055195614 @default.
• W3105603963 cites W2056537647 @default.
• W3105603963 cites W2058041081 @default.
• W3105603963 cites W2061938783 @default.
• W3105603963 cites W2064631236 @default.
• W3105603963 cites W2068082560 @default.
• W3105603963 cites W2070951133 @default.
• W3105603963 cites W2071015796 @default.
• W3105603963 cites W2072320067 @default.
• W3105603963 cites W2073418222 @default.
• W3105603963 cites W2075185642 @default.
• W3105603963 cites W2076226995 @default.
• W3105603963 cites W2076231011 @default.
• W3105603963 cites W2080897018 @default.
• W3105603963 cites W2082378517 @default.
• W3105603963 cites W2095523869 @default.
• W3105603963 cites W2108754507 @default.
• W3105603963 cites W2110177531 @default.
• W3105603963 cites W2110381398 @default.
• W3105603963 cites W2118893895 @default.
• W3105603963 cites W2120470187 @default.
• W3105603963 cites W2120643673 @default.
• W3105603963 cites W2134169725 @default.
• W3105603963 cites W2136292827 @default.
• W3105603963 cites W2139777473 @default.
• W3105603963 cites W2141067605 @default.
• W3105603963 cites W2142235810 @default.
• W3105603963 cites W2142323230 @default.
• W3105603963 cites W2154178173 @default.
• W3105603963 cites W2157733254 @default.
• W3105603963 cites W2159538809 @default.
• W3105603963 cites W2175721333 @default.
• W3105603963 cites W2317595495 @default.
• W3105603963 cites W2323700620 @default.
• W3105603963 cites W2552368478 @default.
• W3105603963 cites W2595810985 @default.
• W3105603963 cites W2949778081 @default.
• W3105603963 cites W2985727267 @default.
• W3105603963 cites W3097988585 @default.

• next