Execution Block ID uid://A001/X15a0/X186 Sgr_A_st_am_03_7M

[keflavich]

Sgr_A_st_am_03_7M
uid://A001/X15a0/X186

• Observations completed?

• Delivered?

• Downloaded? (specify where)

  • hipergator
  • hipergator pipeline run
    • Pipeline Run 20230105T000945
    • Pipeline Run 20230105T011203

• Weblog unpacked

• Weblog Quality Assessment?

• Imaging: Continuum

• Imaging: Lines

  • SPW16 H13CN
  • SPW18 H13CO+/SiO
  • SPW20 HCO+
  • SPW22 HNCO
  • SPW24 Cont 1
  • SPW26 Cont 2

Product Links:

• member.uid___A001_X15a0_X186.Sgr_A_star_sci.spw24.cube.I.pbcor.fits
• member.uid___A001_X15a0_X186.Sgr_A_star_sci.spw20.cube.I.pbcor.fits
• member.uid___A001_X15a0_X186.Sgr_A_star_sci.spw18.cube.I.pbcor.fits
• member.uid___A001_X15a0_X186.Sgr_A_star_sci.spw22.cube.I.pbcor.fits
• member.uid___A001_X15a0_X186.Sgr_A_star_sci.spw26.cube.I.pbcor.fits
• member.uid___A001_X15a0_X186.Sgr_A_star_sci.spw16.cube.I.pbcor.fits
• member.uid___A001_X15a0_X186.Sgr_A_star_sci.spw20.mfs.I.pbcor.fits
• member.uid___A001_X15a0_X186.Sgr_A_star_sci.spw16.mfs.I.pbcor.fits
• member.uid___A001_X15a0_X186.Sgr_A_star_sci.spw24.mfs.I.pbcor.fits
• member.uid___A001_X15a0_X186.Sgr_A_star_sci.spw18.mfs.I.pbcor.fits
• member.uid___A001_X15a0_X186.Sgr_A_star_sci.spw26.mfs.I.pbcor.fits
• member.uid___A001_X15a0_X186.Sgr_A_star_sci.spw22.mfs.I.pbcor.fits
• member.uid___A001_X15a0_X186.Sgr_A_star_sci.spw16_18_20_22_24_26.cont.I.pb.tt0.fits
• member.uid___A001_X15a0_X186.Sgr_A_star_sci.spw16_18_20_22_24_26.cont.I.tt1.pbcor.fits
• member.uid___A001_X15a0_X186.Sgr_A_star_sci.spw16_18_20_22_24_26.cont.I.tt0.pbcor.fits
• member.uid___A001_X15a0_X186.Sgr_A_star_sci.spw16_18_20_22_24_26.cont.I.alpha.fits
• member.uid___A001_X15a0_X186.Sgr_A_star_sci.spw16_18_20_22_24_26.cont.I.alpha.error.fits

Reprocessed Product Links:

• uid___A001_X15a0_X186.s38_0.Sgr_A_star_sci.spw24.cube.I.iter1.image.pbcor.fits
• uid___A001_X15a0_X186.s38_0.Sgr_A_star_sci.spw20.cube.I.iter1.image.pbcor.fits
• uid___A001_X15a0_X186.s38_0.Sgr_A_star_sci.spw26.cube.I.iter1.image.pbcor.fits
• uid___A001_X15a0_X186.s38_0.Sgr_A_star_sci.spw16.cube.I.iter1.image.pbcor.fits
• uid___A001_X15a0_X186.s38_0.Sgr_A_star_sci.spw22.cube.I.iter1.image.pbcor.fits
• uid___A001_X15a0_X186.s38_0.Sgr_A_star_sci.spw18.cube.I.iter1.image.pbcor.fits
• uid___A001_X15a0_X186.s36_0.Sgr_A_star_sci.spw16_18_20_22_24_26.cont.I.iter1.image.tt0.pbcor.fits

[claire-cook]

Weblog shows low QA score for the hif_makeimages target-cube-making task with the note, "MOM8 FC image indicates residual line emission."
hif_findcont's detected continuum ranges for SPW 20 (HCO+):

[d-l-walker]

Just bumping this issue -- looks like nobody is assigned for the QA. I've taken a quick look through the weblog, and I don't see anything fundamentally wrong here.

As @claire-cook pointed out, the continuum selection looks questionable, especially for SPW 20. There is also quite a lot of emission left in the residuals for all SPWs. So this could certainly be improved, but the images are generally OK.

Action items for this would be to:

• Revise continuum selection in all SPWs, with SPW 20 being the highest priority
• Clean deeper in all SPWs

However, I think these are relatively low priority. If someone else can do this, that would be helpful. Otherwise I will get to it eventually, but as a lower priority item.

[ksi85]

Just for completeness: The Tsys of spw24 shows a sharp increase at the low frequency end of the spw as well as a small atmospheric line that are both not flagged.

This leads to quite deep dips at the low frequency end of the spw in the bandpass data:

However, the target data look fine so this does not seem to have a significant impact.

As noted before, the continuum subtraction in spw 20 should be improved and all spw show residual emission.