|
Major
Spectral Emission Lines
(Lines emitted by gases
at low pressure, eg, in nebulae)
(nm = angstroms / 10)
Click
here for graphs
A
spreadsheet with all of the objects listed below and a few more can be found
here
Table: Visible Wavelengths.
Major photographic
lines, ie, bright lines, are in
large
bold;
light pollution lines [sodium, mercury]
are in italics.
Intensities
are normalized to Hb = 100. "nd", no data
available.
Notes (1, etc) are given
below.
|
Element |
State |
Wave-
length
(A)(1) |
Color
(2) |
M42
(3) |
NGC2392
(4) |
NGC7009
(4) |
NGC2440
(4) |
|
Hg
|
nd
|
4050
|
V
|
nd
|
nd
|
nd
|
nd
|
|
S |
II |
4068 |
V |
nd
|
nd
|
3
|
nd
|
|
N |
III |
4097 |
V |
nd
|
nd
|
nd
|
nd
|
|
H |
Delta |
4101 |
V |
25 |
18 |
20 |
20 |
|
He |
I |
4143 |
V |
nd |
nd |
nd |
nd |
|
K[] |
V |
4163 |
V |
nd |
nd |
nd |
nd |
|
He |
II |
4199 |
V |
nd |
nd |
nd |
nd |
|
Fe |
V |
4227 |
V |
nd |
nd |
nd |
nd |
|
C |
II |
4267 |
B |
nd |
nd |
1 |
nd |
|
H |
Gamma |
4340 |
B |
39 |
47 |
40 |
40 |
| Hg |
nd |
4360 |
B |
nd |
nd |
nd |
nd |
|
O |
III |
4363 |
B |
nd |
23 |
8 |
22 |
|
He |
I |
4471 |
B |
nd |
3 |
4 |
3 |
|
He |
II |
4541 |
B |
nd |
nd |
nd |
2 |
|
Fe |
III |
4607 |
B |
nd |
nd |
nd |
nd |
|
N |
III |
4640 |
B |
nd |
nd |
nd |
nd |
|
He |
II |
4686 |
B |
nd |
29 |
7 |
61 |
|
He |
I |
4712 |
B |
nd |
nd |
nd |
nd |
|
Ar |
IV |
4712 |
B |
nd |
nd |
nd |
nd |
|
Ar |
IV |
4740 |
B |
nd |
2 |
3 |
7 |
|
H |
Beta |
4861 |
B |
100 |
100 |
100 |
100 |
|
Fe |
III |
4931 |
G |
nd |
nd |
nd |
nd |
|
O |
III |
4931 |
G |
nd |
nd |
nd |
nd |
|
O |
III |
4959 |
G |
112 |
451 |
417 |
622 |
|
O |
III |
5007 |
G |
348 |
1406 |
500 |
1790 |
|
He |
II |
5411 |
G |
nd |
nd |
1 |
5 |
| Hg |
nd |
5460 |
G |
nd |
nd |
nd |
nd |
|
Cl |
III |
5517 |
G |
nd |
nd |
0.5 |
nd |
|
Cl |
III |
5537 |
G |
nd |
1 |
0.6 |
nd |
| Na |
nd |
5700 |
G |
nd |
nd |
nd |
nd |
| Hg |
nd |
5790 |
Y |
nd |
nd |
nd |
nd |
| Na |
nd |
5830 |
Y |
nd |
nd |
nd |
nd |
|
He |
I |
5876 |
Or |
31 |
11 |
19 |
12 |
| Na |
nd |
6000 |
nd |
nd |
nd |
nd |
nd |
|
K |
IV |
6101 |
Or |
nd |
nd |
nd |
nd |
|
O |
I |
6300 |
Or |
nd |
nd |
0.5 |
33 |
|
S |
III |
6312 |
Or |
nd |
5 |
2 |
nd |
|
Mn |
V |
6393 |
Or |
nd |
nd |
nd |
nd |
|
He |
II |
6406 |
Or |
nd |
nd |
nd |
nd |
|
Ar |
V |
6435 |
Or |
nd |
nd |
nd |
nd |
|
N |
II |
6548 |
R |
nd |
56 |
10 |
418 |
|
H |
Alpha |
6563 |
R |
33 |
395 |
373 |
464 |
|
N |
II |
6584 |
R |
52 |
160 |
31 |
1236 |
|
He |
I |
6678 |
R |
26 |
3 |
5 |
4 |
|
S |
II |
6717 |
R |
nd |
9 |
2 |
8 |
|
S |
II |
6723 |
R |
nd |
nd |
nd |
nd |
Back
Notes:
1
extracted
from Kaler, Stars & Their Spectra, p228-9)
2
From
CRC Handbook, page E204
UV < 4000 Angstroms
(A)
V 4000-4240; 4100
B 4240-4912; 4700
G 4912-5750; 5200
Max visibility = 5560
Y 5750-5850; 5800
Or 5850-6470; 6000
R 6470-7000; 6500
IR > 7000
3
Intensities of emission nebular lines (arbitrary units), estimated
from AMOACP, figure 7.4; Trapezium region of M42.
4
Intensities of planetary nebular
lines (arbitrary units), from
http://home.achilles.net/~jtalbot/data/nebula/
(NGC 2392 = Eskimo; NGC 7009 = Saturn nebula)
Additional sources:
http://www.rdcrisp.darkhorizons.org/spectra_of_planetary_nebulae_page.htm
Ultraviolet Wavelengths
|
Element |
State |
Wavelength
(A)(1) |
Color
(2) |
|
O |
III |
3132 |
Uv |
|
He |
I |
3187 |
Uv |
|
He |
II |
3203 |
Uv |
|
O |
III |
3299 |
Uv |
|
O |
III |
3312 |
Uv |
|
O |
III |
3340 |
Uv |
|
Ne |
III |
3342 |
Uv |
|
Ne |
V |
3425 |
Uv |
|
O |
III |
3425 |
Uv |
|
O |
III |
3444 |
Uv |
|
H |
21 |
3679 |
Uv |
|
O |
II |
3727 |
Uv |
|
O |
III |
3760 |
Uv |
|
H |
10 |
3797 |
Uv |
|
H |
9 |
3835 |
Uv |
|
Ne |
III |
3868 |
Uv |
|
H |
8 |
3889 |
Uv |
|
He |
II |
3923 |
Uv |
|
H |
7 |
3968 |
Uv |
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|