Interstellar Dust Cloud Mapping Lab

March 10, 2023

Laboratory Procedure

Please see the printed lab instructions.

Stellar data

These data files are drawn from the same random ensemble. The shorter files are simply truncated versions of it. 20 stars is enough for reasonable results, but you are welcome to do more! You can also draw randomly from a larger list if you are having trouble interpolating some table entries.

References

These are primarily useful for tables of M_V absolute magnitude and B-V intrinsic color index for different spectral types (i.e., spectral class + luminosity class combination). The Bradt and Mihalas tables were used in the Kurucz lab, but the Lang tables are a bit more detailed, requiring somewhat less interpolation.

Although some B-V colors are included in the Lang M_V tables, they are often mixed with others like U-B or R-I, so it's better to refer to Lang's separate B-V tables.

In the Lang B-V tables, use "Population I" (not Zero-Age Main Sequence), and be sure to avoid U-B colors.

Absolute Magnitude vs. Spectral Type (PDF; Lang 1992, pp 137-146)
Color Index vs. Spectral Type (PDF; Lang 1992, pp 149-153)
Stellar Parameters vs. Spectral Type (GIF; Bradt 2008, Table 4.2)
Photometric Colors of Different Stellar Types (PDF; Mihalas + Binney 1981, pp 108-121)
UBV Photometric Filter Response vs. Wavelength (JPG; Carroll + Ostlie 2007, Figure 3-10)