Messier 34: Perbedaan antara revisi

Konten dihapus Konten ditambahkan
Andreas Sihono (bicara | kontrib)
Tidak ada ringkasan suntingan
Andreas Sihono (bicara | kontrib)
Tidak ada ringkasan suntingan
Baris 1:
{{terjemah|Inggris}}
{{Cluster
| name = Messier 34
Baris 67 ⟶ 66:
| bibcode=2006MNRAS.370..954I
|arxiv = astro-ph/0605617 }}</ref>
<!--
 
 
The average proportion of elements with higher atomic numbers than helium is termed the [[metallicity]] by astronomers. This is expressed by the logarithm of the ratio of iron to hydrogen, compared to the same proportion in the Sun. For M34, the metallicity has a value of [Fe/H]&nbsp;=&nbsp;+0.07&nbsp;±&nbsp;0.04. This is equivalent to a 17% higher proportion of iron compared to the Sun. Other elements show a similar abundance, with the exception of nickel which is underabundant.<ref>
{{cite journal
| author=Schuler, Simon C. ''et al''
| year=2003
| title=Spectroscopic Abundances of Solar-Type Dwarfs in the Open Cluster M34 (NGC 1039)
| journal=[[Astronomical Journal]]
| volume=125 | issue=4 | pages=2085–2097
| doi=10.1086/373927
| bibcode=2003AJ....125.2085S
}}</ref>
 
At least 19 members of this cluster are [[white dwarf]]s. These are [[stellar remnant]]s of progenitor stars of up to eight [[solar mass]]es that have evolved through the [[main sequence]] and are no longer engaged in [[thermonuclear fusion]] to generate energy. 17 of the white dwarfs are of spectral type DA or DAZ, while one is a type DB and the last is a type DC.<ref>{{cite journal
| author=Rubin, Kate H. R.; Williams, Kurtis A.; Bolte, M.; Koester, Detlev
| year=2008
| title=The White Dwarf Population in NGC 1039 (M34) and the White Dwarf Initial-Final Mass Relation
| journal=[[Astronomical Journal]]
| volume=135 | issue=6 | pages=2163–2176
| doi=10.1088/0004-6256/135/6/2163
| bibcode=2008AJ....135.2163R
}}</ref>
-->
==Referensi==
{{reflist|2}}