Isochrone and LF Generator

Description

This page allows one to interpolate isochrones for any [Fe/H] within the bounds of the computed grid (via a web interface to iso_interp_feh) and generate luminosity functions (LFs) from those isochrones (via a web interface to isolf). For more on these programs see the Programs page. Available only for the 1 - 15 Gyr isochrone sets.

Interpolation Options

Interpolation:	Cubic Linear	Cubic is the default. Linear is available.

Output Options

Output:	Isochrones only Isochrones & LFs	Choose the desired type of output.

Age Options

Enter a list of ages in Gyr separated by spaces, e.g. "10.1 10.2 10.3 10.4".
Available range is 1 - 15 Gyr. Leave empty for the default set of ages.
Maximum of 50 ages.

Age=

Isochrone Options

[Fe/H]=		Available range is -2.5 < [Fe/H] < +0.5
Helium:	Y=0.245+1.5*Z Y=0.33 Y=0.40	Helium mass fraction. Y=0.33 and 0.40 only available for [Fe/H] ≤ 0.
[α/Fe]=	-0.2 0 (scaled-solar) +0.2 +0.4 +0.6 +0.8	Options for [α/Fe]. Only [α/Fe]=0 or +0.4 for Y=0.33 and 0.40.
Colors:	--Synthetic-- Gaia DR2 Revised UBV(RI)c + 2MASS + Kepler Washington + DDO51 + Stromgren HST/WFPC2 HST/ACS-WFC HST/ACS-HRC HST/WFC3 Spitzer-IRAC UKIDSS WISE CFHT-MegaCam ugriz SDSS ugriz PanSTARRS SkyMapper DECam --Empirical-- BV(RI)c+Stromgren	Choice of photometric system.

Luminosity Function Options

Filter No.:		Filter in which to build LFs. Consult the table below.
Bin Size=		Bin size in mag.
IMF Type:	Power Law (PL) Log Normal (LN)	Type of initial mass function (IMF).
PL: Slope=		Power Law IMF: dN/dM ∝ MX. For Salpeter x=-2.35.
LN: μ=		Log Normal IMF: μ in solar units
LN: σ=		Log Normal IMF: σ in Solar units

Filter Set

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

Gaia DR2 Revised

G

BP

RP

UB(RI)c + 2MASS + Kepler

U

B

V

R

I

J

H

Ks

Kp

D51

Washington + DDO + Stromgren

C

M

T1

T2

DDO51(vac)

DDO51(f31)

u

v

b

y

HST/WFPC2

F218W

F255W

F300W

F336W

F439W

F450W

F555W

F606W

F622W

F675W

F791W

F814W

F850LP

HST/ACS-WFC

F435W

F475W

F502N

F550M

F555W

F606W

F625W

F658N

F660N

F775W

F814W

F850LP

HST/ACS-HRC

F220W

F250W

F330W

F344N

F435W

F475W

F502N

F550M

F555W

F606W

F625W

F658N

F660N

F775W

F814W

F850LP

F892N

Spitzer IRAC

[3.6]

[4.5]

[5.8]

[8.0]

UKIDSS

Z

Y

J

H

K

WISE

W1

W2

W3

W4

CFHT MegaCam

u

g

r

i (new)

i (old)

z

SDSS

u

g

r

i

z

PanSTARRS

open

g

r

i

z

y

w

SkyMapper

u

v

g

r

i

z

DECam

u

g

r

i

z

Y

Empirical BV(RI)c+uvby

B

V

Rc

Ic

u

v

b

y

c1

m1

NOTE: HST WFC3 filters are too numerous to fit in the table. Click here for a complete list of options.