Telecon: Nov. 13-17, 2017 (Nov. 16, 4 pm German time)

[SihanJiao]

1. Review a paper Sihan read http://adsabs.harvard.edu/abs/2012ApJ...756...40S [Smith+12: The Herschel Exploitation of Local Galaxy Andromeda (HELGA). II. Dust and Gas in Andromeda] (Last week, I did a paper reading report in the star-formation journal club about the dust in M31 using this paper and Draine 2014)

2. Going through working progress SCUBA2 model simulation

3. Check JCMT M31 data

4. Todo list for the following week

[baobabyoo]

For fitting filament profile you may have a look at https://github.com/catherinezucker/radfil/blob/master/RadFil_Tutorial.ipynb

[SihanJiao]

Following work:

1. reduce JCMT M31 data and summary a simple catalog for the point sources in the 850 um image
2. simulation (1) combine with simulated Planck image (2) identify the largest recoverable angular scale of SCUBA2 in a quantitative way (3) test the SCUBA2 simulation using gaussian function
3. fitting filament profile

[baobabyoo]

Once you obtain a point source catelogue and a preliminary derivation of dust mass and temperature, you may consider to propose to NRO-45m, for pointing observations (not OTF) on those point sources, for CO/13CO/C18O 1-0 (http://www.nro.nao.ac.jp/~nro45mrt/html/prop/index-e.html). The angular resolution will be more or less the same with your SCUBA2 850 micron image (wavelength 3 times longer, but dish size is also 3 times bigger). Later can propose complementary JCMT pointing spectra for CO/13CO/C18O 3-2 and IRAM-30m CO/13CO/C18O 2-1.

[baobabyoo]

OK these are the physics we can test http://adsabs.harvard.edu/abs/2014MNRAS.439..936F http://adsabs.harvard.edu/abs/2016MNRAS.461.1684F Please ask some help from Yuxin if needed.

[SihanJiao]

Many thanks! It seems I could finish M31 SCUBA2 data processing at the beginning of next week. I will read these two paper, try to summary the point source catelogue and propose to Nobeyama 45m.

I just received a mail from Matthew Smith and he wants to arrange a telecon to discuss data reduction and plans for the first data at one day over the period 27th November to 10th December. He said HASHTAG is 35% complete, with 100% completion for HARP grade 3 program and 19% complete for the SCUBA-2 grade 2 program. In particular, as 100% completion with HARP CO(3-2) program, he wants people to think on science ideas for the CO(3-2) data.

[baobabyoo]

Hmm, it seems like the CO 3-2 survey area of HASTAG is not overlapped with your SCUBA2 field at all http://www.eaobservatory.org/jcmt/science/large-programs/hashtag/ It is necessary to follow up with your own JCMT and NRO-45m program. For this particular case, I am more into making deeper integration to observe rare isotopologues instead of making OTF mapping.

[baobabyoo]

Once you're ready with the point source catelogue, we might consider to team up with Fujimoto and Hsi-An. It is useful to obtain some theoretical input from Fujimoto (although I don't know him in person yet).

[baobabyoo]

And you can obtain some help from Zhiyu Zhang to reduce your own CO 3-2 data. https://github.com/ZhiyuZhang/MALATANG I recall that Zhiyu is formally your co-I? It might help the proposal of NRO-45m.

[SihanJiao]

Yes, Zhiyu is co-I of all our M31 proposal. And then I will try to reduce our own CO 3-2 data.

[baobabyoo]

You can let Zhiyu help you. He has a rather automatic pipeline to convert JCMT data to class format, and then can reduce using his class pipeline. It is better than the JCMT official pipeline.

[SihanJiao]

I just finished the M31 SCUBA2 850 um data reduction and uploaded on the Github. https://github.com/SihanJiao/M31-project/blob/master/M31%2BSCUBA2%2B850%2Bum%2Bimage%2Band%2Bpoint%2Bsources.ipynb

Using DS9, I measured a rms noise of ~0.0059 mJy/arcsec**2 from the image center. Considering an angule resolution of 14", our 850 um image's rms is ~1.19 mJy/beam and is deeper than previous image (1.6 mJy/beam). I will try combination and to make a catalogue of these point sources tomorrow.

[baobabyoo]

Very nice image!