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ACES-CMZ / reduction_ACES

Reduction scripts and tools for ACES
https://worldwidetelescope.org/webclient/?wtml=https://data.rc.ufl.edu/pub/adamginsburg/ACES/mosaics/mosaics.wtml
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Total Power + 7M combination: Sgr_A_st_ad_03 #46

Open keflavich opened 2 years ago

keflavich commented 2 years ago

Combination of:

keflavich commented 2 years ago

https://github.com/ACES-CMZ/reduction_ACES/issues/25 https://github.com/ACES-CMZ/reduction_ACES/issues/5

pyhsiehATalma commented 2 years ago

The first thing is to compare flux of TP+7 m feather cubes (smoothed to TP beam size) and TP only data. The idea is to see the flux is conserved in feather cube. Spw 18 (7 m) and spw 19 (TP) cubes were tested. The targets lines are H13CO+/SiO.

Feather is working ok in general, but it appears that the fluxes have 10~13% errors from position to position. I wonder whether this is caused by (1) 7 m clean errors of pipeline product (2) difference of 7 m dirty/clean beam shapes (In case synthesized beam << convolution beam, the brightness is under estimated).

I also try to re-clean the 7 m data with a optimized parameters and to see if it causes the problems of errors of flux. The results remain the same, so it is likely the errors are caused by the beam shapes.

Tp+7m_3 Tp+7m_4 Tp+7m_f1 TP+7m_2

The test looks fine and the next step is to combine 7 m and TP of all spectral windows. I guess we could combine 7 m and TP cubes using default parameters in feather and I don't see any specific issue here.

pyhsiehATalma commented 2 years ago

Just leave a note here of the target line and spectral windows numbers.

7 m TP Lines
spw0 spw 16 spw 17 H13CN (done)
spw 1 spw 18 spw 19 H13CO+/SiO (done)
spw 2 spw 20 spw 21 HCO+ (done)
spw 3 spw 22 spw 23 HNCO (done)
pyhsiehATalma commented 2 years ago

spw 0 | spw 16 | spw 17 | H13CN

Spectra of spw 0. Red: single-dish data. Blue: smoothed 7m data. spec-spw0 Moment 0 map of 7 m image. m0-7m-spw0 Moment 0 map of feather image. m0-feather-spw0

pyhsiehATalma commented 2 years ago

spw 2 | spw 20 | spw 21 | HCO+

Spectra of spw 2. Red: single-dish data. Blue: smoothed 7m data. spec-spw2 Moment 0 map of 7 m image. m0-7m-spw2 Moment 0 map of feather image. m0-feather-spw2

pyhsiehATalma commented 2 years ago

spw 3 | spw 22 | spw 23 | HNCO

Spectra of spw 2. Red: single-dish data. Blue: smoothed 7m data. spec-spw3 Moment 0 map of 7 m image. m0-7m-spw3 Moment 0 map of feather image. m0-spw3-feather

pyhsiehATalma commented 2 years ago
pyhsiehATalma commented 2 years ago

Feathering TP+7m and 12m (product) cubes Results look good, the negative bowls are removed in the combined 12m+7m+TP maps. Ripples of the TP map affect final results in spw 2.

Spw 0: H13CN (upper: 12m+7m+TP, lower: 12m) Spw0-12m7mTPFeather-H13CN-spw0

Spw 1: H13CO+/SiO (upper: 12m+7m+TP, lower: 12m) Spw1-h13coPlus-sio

Spw 2:HCO+ (upper: 12m+7m+TP, lower: 12m) Spw2-hcoPlus

Spw 2: HCO+ (upper: 12m+7m+TP, lower: 12m, TP ripples shown in the combined map) Spw2-tp-issue

Spw 2:HCO+ (upper: 12m+7m+TP, lower: 7m+TP) Spw2-hcoPlus-SD-ripple

Spw 3: HNCO (upper: 12m+7m+TP, lower: 12m) Spw3-hnco