Objects of interest in the GLIMPSE survey region
Click on the range of interest to get MSX 8 micron map ( * ) with positions of sources overlaid. By moving your cursor on and off the image you can "blink" the position of the sources
Colorbar (Watts/m^2/sr) --- Colorbar (MJy/sr)
IDL binary file of IRAS point sources in GLIMPSE area ----
IDL binary file of MSX point sources in GLIMPSE area
Color-Color plots for IR emitting objects
This first image contains models of Whitney et al and is included in the first GLIMPSE paper.
The next plots are based on the excellent paper comparing MSX and 2MASS observations of the LMC by Egan, van Dyk, & Price (2001 AJ 122, 1844)
(J-K) vs (K-A) --- (H-K) vs (K-A) --- MSX band response function
Band A
is centered at 8.3 microns. The response function comes from the
homepage of
Mehrdad Moshir
Bob's rough approximation to A band
response function:
- R=-0.32+ 0.12 *wavelength (wavelength= 6 to 10.6 microns)
The following flux densities correspond to zero magnitude for MSX data:
- 58.49 Jy (Band A)
- 26.51 Jy (Band C)
- 18.29 Jy (Band D)
- 8.75 Jy (Band E)
This comes from Cohen, Hammersley, & Egan (2000 AJ, 120, 3362).
Neglecting (for now) the difference between the MSX 8 micron band and the IRAC 8 micron band, we have roughly the following limits for point source sensitivity/saturation:
- Saturation F=444mJy; [A]=5.3 mag
- MSX limit F=100mJy; [A]=6.9 mag
- GLIMPSE limit (5 sigma) F=2mJy; [A]=11.2 mag
- GLIMPSE limit (1 sigma) F=0.4mJy; [A]=12.9 mag
Absolute magnitudes for IR emitting objects
Histogram of absolute [A] magnitude of color selected HII regions in the LMC (no extinction correction) --- Postscript version
(From Compiled using data from Egan et al. 2001 AJ 122, 1844 )
Compiled by Bob Benjamin
![Histogram of absolute [A] magnitude of color selected HII regions in the LMC (no extinction correction)](LMCSFR_Amag.jpg){kind=link}