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bigbluestar
2006-Jul-21, 12:33 AM
I use to have a chart that had the known spectral lines and there corresponding elements. I lost it and now know how much I use to use it.....

Does any one know where I can find a list of known absorbtion and emmision lines for elements used in astronomy? I would reallly appreciate it

ToSeek
2006-Jul-21, 04:18 AM
I did some quick Googling but nothing jumped out at me. I'll dig out my astronomy textbooks tomorrow and see if that gives me any ideas for searching.

papageno
2006-Jul-21, 10:35 AM
Maybe the NIST (http://physics.nist.gov/PhysRefData/ASD/index.html) can be of assistance.

ngc3314
2006-Jul-21, 01:59 PM
Here's a file I've kept up of emission lines in the optical and UV. Wavelengths are in Angstroms and sometimes rounded (in the final quasar list, blended doublets are listed once since quasar lines are so broad that 1-2 A separations blend quite thoroughly). As usual in astrophysics [] indicates so-called forbidden transitions, which are essentially never seen in absorption. The H and He lines may be in emission or absorption (my efforts at formatting a better break between H and He columns have been in vain). This list is still missing metal absorption lines seen in stellar photospheres (mostly because I've worked a lot more on the emission lines; my stellar lists are all still on old bits of paper).

Hydrogen lines (and He II counterparts when there's a second value)

Lyman series
1215.67 303.78
1025.72 256.31
992.54 248.02
949.74 237.33
937.803 234.34
limit 911.75 227.84

Balmer
6562.80 H-alpha 1640.401
4861.32 H-beta
4340.46 H-gamma
4101.73 H-delta
3970.07 H-epsilon
3889.05 H8
3835.38 H9
3797.90 H10
3770.63 H11
3750.15 H12
3734.37 H13
3721.94 H14
3711.97 H15
3646.0 limit

Paschen
18751.0 alpha 4685.75
12818.1 beta 3203.16
10938.1 gamma 2733.4
10049.4 delta 2511.3
9545.98 epsilon
9229.02 P9
9014.91 P10
8862.79 P11
8750.47 P12
8205.75 limit 2050.6

He I lines
3187.74
3888.65
4471.5
4921.93
5015.68
5875.76
6678.15
7065.19
7065.71
10830.2
10830.3

[O I]
5577.4
2972.3
6300.32
6363.81


[O II]
2470.3
3726.1
3728.8
7318.6
7319.4
7329.9
7330.7

[O III]
2321.0
4363.2
4958.9
5006.9

strongest O III Bowen resonance-fluorescence lines
3444.10
3428.67
3132.86
3340.74
3312.30
3047.13

[S II]
4068.6
4076.4
6716.42
6730.78
10286.7
10320.5
10336.4
10370,5

[S III]
6312.1
3721.7
3797.4
9531.8
9069.0

[Ne III]
3868.74
3967.5

[Ne V]
3425.9

[N II]
5754.6
6548.10
6583.60

Consolidated UV/optical list for QSO and other AGN spectra:
1025 Ly-beta
1034 O VI (doublet)
1216 Ly-alpha
1240 N V
1398 Si IV
1407 O IV]
1486 N IV]
1549 C IV (doublet)
1640 He II
1663 O III]
1749 N III]
1817 Si II
1909 C III]
2326 C II]
2798 Mg II (doublet)
3132 O III
3187 He I
3203 He II
3312 O III
3346 [Ne V]
3426 [Ne V]
3727 [O II] (doublet)
3760 [Fe VII]
3869 [Ne III]
3889 HeI+H-epsilon
4069-76 [S II]
4101 H-delta
4340 H-gamma
4363 [O III]
4471 He I
4658 [Fe III]
4686 He II
4711 [Ar IV]
4740 [Ar IV]
4861 H-beta
4959 [O III]
5007 [O III]
5159 [Fe VII]
5199 [N I]
5309 [Ca V]
5412 He II
5528 [Cl III]
5577 [O I]
5721 [Fe VII]
5755 [N II]
5876 He I
6087 [Fe VII]
6300 [O I]
6312 [S III]
6363 [O I]
6374 [Fe X]
6435 [Ar V]
6548 [N II]
6563 H-alpha
6583 [N II]
6601 [Fe VII]
6717 [S II]
6731 [S II]
7006 [Ar V]
7065 He I
7136 [Ar III]
7170 [Ar IV]
7319-30 [O II]
7751 [Ar III]
7891 [Fe XI]
8237 He II
8446 O I
8617 [Fe V]
9069 [S III]
9532 [S III]
10830 He I

George
2006-Jul-23, 03:40 AM
To add a little colorful sunlight (http://apod.gsfc.nasa.gov/apod/ap000815.html).

[I just read that in 1898 John Evershed photographed 313 emission lines (334 to 600nm) during an ecliplse (28 Balmer lines). I vaguely recall the line count for the sun is around 25,000.]