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SWIFT
SWIFTsim
Commits
1cb606d3
Commit
1cb606d3
authored
6 years ago
by
Folkert Nobels
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Update the tex file
parent
3129fb04
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!705
Star formation following Schaye08
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theory/Star_Formation/bibliography.bib
+25
-0
25 additions, 0 deletions
theory/Star_Formation/bibliography.bib
theory/Star_Formation/starformation.tex
+22
-4
22 additions, 4 deletions
theory/Star_Formation/starformation.tex
with
47 additions
and
4 deletions
theory/Star_Formation/bibliography.bib
+
25
−
0
View file @
1cb606d3
...
...
@@ -59,3 +59,28 @@ archivePrefix = "arXiv",
adsurl
=
{http://adsabs.harvard.edu/abs/2012MNRAS.426..140D}
,
adsnote
=
{Provided by the SAO/NASA Astrophysics Data System}
}
@ARTICLE
{
schaye2015
,
author
=
{{Schaye}, J. and {Crain}, R.~A. and {Bower}, R.~G. and {Furlong}, M. and
{Schaller}, M. and {Theuns}, T. and {Dalla Vecchia}, C. and
{Frenk}, C.~S. and {McCarthy}, I.~G. and {Helly}, J.~C. and
{Jenkins}, A. and {Rosas-Guevara}, Y.~M. and {White}, S.~D.~M. and
{Baes}, M. and {Booth}, C.~M. and {Camps}, P. and {Navarro}, J.~F. and
{Qu}, Y. and {Rahmati}, A. and {Sawala}, T. and {Thomas}, P.~A. and
{Trayford}, J.}
,
title
=
"{The EAGLE project: simulating the evolution and assembly of galaxies and their environments}"
,
journal
=
{\mnras}
,
archivePrefix
=
"arXiv"
,
eprint
=
{1407.7040}
,
keywords
=
{methods: numerical, galaxies: evolution, galaxies: formation, cosmology: theory}
,
year
=
2015
,
month
=
jan
,
volume
=
446
,
pages
=
{521-554}
,
doi
=
{10.1093/mnras/stu2058}
,
adsurl
=
{http://adsabs.harvard.edu/abs/2015MNRAS.446..521S}
,
adsnote
=
{Provided by the SAO/NASA Astrophysics Data System}
}
This diff is collapsed.
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theory/Star_Formation/starformation.tex
+
22
−
4
View file @
1cb606d3
...
...
@@ -46,8 +46,8 @@ converted to a star particle:
\end{align}
\noindent
In general we use
$
A
=
1
.
515
\cdot
10
^{
-
4
}
~
\text
{
M
}_
\odot
~
\text
{
yr
}^{
-
1
}
~
\text
{
kpc
}^{
-
2
}$
and
$
n
=
1
.
4
$
. In the case of high densities (
$
n
_
\text
{
H
}
>
10
^
3
~
\text
{
cm
}^{
-
3
}$
),
the power law will be steaper and have a value of
$
n
=
2
$
. This will also adjust
and
$
n
=
1
.
4
$
. In the case of high densities (
$
n
_
\text
{
H
,thresh
}
>
10
^
3
~
\text
{
cm
}^{
-
3
}$
),
the power law will be steaper and have a value of
$
n
=
2
$
\citep
{
schaye2015
}
. This will also adjust
the normalization of the star formation law, both need to be equal at the
pressure with a corresponding density. This means we have:
\begin{align}
...
...
@@ -74,7 +74,8 @@ In which $n_\text{H,norm}$ is the normalization of the metallicity dependent
star formation law,
$
Z
$
the metallicity,
$
Z
_
0
$
the normalization metallicity,
and
$
n
_
Z
$
the power law of the metallicity dependence on density. standard
values we take for the EAGLE are
$
n
_
\text
{
H,norm
}
=
0
.
1
~
\text
{
cm
}^{
-
3
}$
,
$
n
_
Z
=-
0
.
64
$
and
$
Z
_
0
=
0
.
002
$
.
$
n
_
Z
=-
0
.
64
$
and
$
Z
_
0
=
0
.
002
$
. Also we impose that the density threshold cannot
exceed the maximum value of
$
n
_
\text
{
H,max,norm
}$
\citep
{
schaye2015
}
.
For the initial pressure determination the EAGLE code uses (Explanation needed):
\begin{align}
...
...
@@ -93,7 +94,24 @@ Besides this we also use the more extended temperature criteria proposed by
\log
_{
10
}
T <
\log
_{
10
}
T
_
\text
{
eos
}
+ 0.5.
\end{align}
\begin{table}
\begin{tabular}
{
l|l|l|l
}
Variable
&
Parameter file name
&
Default value
&
unit
\\
\hline
$
A
$
&
SchmidtLawCoeff
\_
MSUNpYRpKPC2
&
$
1
.
515
\cdot
10
^{
-
4
}$
&
$
M
_
\odot
~yr
^{
-
1
}
~kpc
^{
-
2
}$
\\
$
n
$
&
SchmidtLawExponent
&
$
1
.
4
$
&
none
\\
$
\gamma
$
&
gamma
&
$
\frac
{
5
}{
3
}$
&
none
\\
$
G
$
&
No, in constants
&
-
&
-
\\
$
f
_
g
$
&
fg
&
$
1
.
$
&
none
\\
$
n
_{
high
}$
&
SchmidtLawHighDensExponent
&
$
2
.
0
$
&
none
\\
$
n
_{
H,thresh
}$
&
SchmidtLawHighDens
\_
thresh
\_
HpCM3
&
$
10
^
3
$
&
$
cm
^{
-
3
}$
\\
$
n
_{
H,norm
}$
&
thresh
\_
norm
\_
HpCM3
&
$
.
1
$
&
$
cm
^{
-
3
}$
\\
$
Z
_
0
$
&
MetDep
\_
Z0
&
$
0
.
002
$
&
none
\\
$
n
_
Z
$
&
MetDep
\_
SFthresh
\_
Slope
&
$
-
0
.
64
$
&
none
\\
$
\Delta
$
&
thresh
\_
MinOverDens
&
$
57
.
7
$
&
none
\\
$
T
_{
crit
}$
&
thresh
\_
temp
&
$
10
^
5
$
&
$
K
$
\\
$
n
_{
H,max,norm
}$
&
thresh
\_
max
\_
norm
\_
HpCM3
&
10.0
&
$
cm
^{
-
3
}$
\end{tabular}
\end{table}
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