Sökning: onr:"swepub:oai:DiVA.org:kth-185973" >
DISCOVERY OF MOLECU...
DISCOVERY OF MOLECULAR HYDROGEN IN SN 1987A
-
- Fransson, Claes (författare)
- Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)
-
- Larsson, Josefin (författare)
- KTH,Partikel- och astropartikelfysik
-
Spyromilio, Jason (författare)
-
visa fler...
-
Leibundgut, Bruno (författare)
-
McCray, Richard (författare)
-
Jerkstrand, Anders (författare)
-
visa färre...
-
(creator_code:org_t)
- Institute of Physics Publishing, 2016
- 2016
- Engelska.
-
Ingår i: Astrophysical Journal Letters. - : Institute of Physics Publishing. - 2041-8205 .- 2041-8213. ; 821:1
- Relaterad länk:
-
https://urn.kb.se/re...
-
visa fler...
-
https://doi.org/10.3...
-
https://urn.kb.se/re...
-
visa färre...
Abstract
Ämnesord
Stäng
- Both CO and SiO have been observed at early and late phases in SN 1987A. H-2 was predicted to form at roughly the same time as these molecules, but was not detected at early epochs. Here, we report the detection of NIR lines from H-2 at 2.12 and 2.40 mu m in VLT/SINFONI spectra obtained between days 6489 and 10,120. The emission is concentrated to the core of the SN in contrast to Ha and approximately coincides with the [Si I]/[Fe II] emission detected previously in the ejecta. Different excitation mechanisms and power sources of the emission are discussed. From the nearly constant H-2 luminosities, we favor excitation resulting from the Ti-44 decay.
Ämnesord
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Nyckelord
- molecular processes
- supernovae: general
- supernovae: individual (SN 1987A)
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas