Task answer notes from luisa - Revision history

Hoette: /* Task 9 */

2010-12-21T08:02:25Z

Task 9

Hoette: /* Task 9 */

2010-12-21T07:52:02Z

Task 9

Hoette: /* Task 9 */

2010-12-21T02:15:29Z

Task 9

Hoette: /* Task 9 */

2010-12-21T01:51:37Z

Task 9

Rebull at 22:19, 20 December 2010

2010-12-20T22:19:50Z

Rebull: /* Task 9 */

2010-12-20T21:11:37Z

Task 9

Rebull: /* Task 1 */

2010-12-20T20:38:09Z

Task 1

Rebull at 20:35, 20 December 2010

2010-12-20T20:35:55Z

Rebull: /* Task 9 */

2010-12-20T20:32:12Z

Task 9

Rebull: /* Task 9 */

2010-12-20T20:31:05Z

Task 9

@@ Line 398: / Line 398: @@
 hint: use region files and ds9.
-Here are some quick-and-dirty things I did.  Most of you have already figured out that most of the surviving YSOs are on the far right (West) of the image.  [[media:cg4region.reg.txt|my region file if you want to copy it]]-- save this file to disk and change the extension to ".reg" to use it in ds9.  (Viv says, you can just choose all files in DS9 and load a region file that is a txt.)
+Here are some quick-and-dirty things I did.  Most of you have already figured out that most of the surviving YSOs are on the far right (West) of the image.  [[media:cg4region.reg.txt|my region file if you want to copy it]]-- save this file to disk and change the extension to ".reg" to use it in ds9.
 [[image:ysosonirac1.png]]

@@ Line 418: / Line 418: @@
 [[image:ysobygradeoni4.png]]
-YSO candidates by grade (previously known YSO = "Y", then A, B, C in order from highest to lowest confidence). THIS one is nice. Shows that our highest-confidence ones ARE clustered. Good news.  Viv: Luisa, this is my favorite graphic. Thank you!
+YSO candidates by grade (previously known YSO = "Y", then A, B, C in order from highest to lowest confidence). THIS one is nice. Shows that our highest-confidence ones ARE clustered. Good news.
 =Task 10=

@@ Line 418: / Line 418: @@
 [[image:ysobygradeoni4.png]]
-YSO candidates by grade (previously known YSO = "Y", then A, B, C in order from highest to lowest confidence). THIS one is nice. Shows that our highest-confidence ones ARE clustered. Good news.
+YSO candidates by grade (previously known YSO = "Y", then A, B, C in order from highest to lowest confidence). THIS one is nice. Shows that our highest-confidence ones ARE clustered. Good news.  Viv: Luisa, this is my favorite graphic. Thank you!
 =Task 10=

@@ Line 398: / Line 398: @@
 hint: use region files and ds9.
-Here are some quick-and-dirty things I did.  Most of you have already figured out that most of the surviving YSOs are on the far right (West) of the image.  [[media:cg4region.reg.txt|my region file if you want to copy it]]-- save this file to disk and change the extension to ".reg" to use it in ds9.
+Here are some quick-and-dirty things I did.  Most of you have already figured out that most of the surviving YSOs are on the far right (West) of the image.  [[media:cg4region.reg.txt|my region file if you want to copy it]]-- save this file to disk and change the extension to ".reg" to use it in ds9.  (Viv says, you can just choose all files in DS9 and load a region file that is a txt.)
 [[image:ysosonirac1.png]]

@@ Line 61: / Line 61: @@
 *073114.6-465842
 *073114.9-470055 - noted in image inspection as faint m1 -
-*073121.8-465745 - because of multiple source issue, i'm expecting rotten photom here - actually well-matched except i3; m1 a little off. prob original better.
+*073121.8-465745 - because of multiple source issue, i'm expecting rotten photom here - actually well-matched except i3; m1 a little off. prob original better. (NB: "original" means inheriting some photometry from one of the dropped sources!)
-*073136.6-470013 - nothing should be unusual here, but irac photom wildly different all bands except i2, and m1 very different too. what?
+*073136.6-470013 - nothing should be unusual here, but irac photom wildly different all bands except i2, and m1 very different too. what? looking at SED, original photometry is better.
-*073137.4-470021 - i1i3 both very different.
+*073137.4-470021 - i1i3 both very different. what? looking at SED, original photometry is better.
 *073143.8-465818
 *073144.1-470008 - noted in image inspection as could be messy irac phot due to source proximity - got different i1 on redo. but this is faint obj next to bright obj. high error measurement anyway. m1 a little different, keep original.
@@ Line 82: / Line 82: @@
 *073109.9-465750 - use new m1 (942 +/- 66 uJy, 9.70 +/- 0.08 mag)
 *073110.8-470032 - new IRAC fluxes look much better. use those.  [[media:examplenewsed.gif]]  (i1: 98177+/- 4918 uJy, 8.64+/-0.05 mag; i2: 92211 +/- 4620 uJy, 8.22 +/- 0.05 mag; i3 unchanged; i4: 71660 +/- 3591 uJy, 7.38 +/- 0.05 mag)
-*073136.6-470013 - no change - original photom better
+*073121.8-465745 - take the JHK and m1 fluxes accidently assigned to 073121.8-465744 and assign them here.
 *073243.5-464941 - no change, except can add m1 LIMIT ( <324 uJy, >10.86 mag)
-My final, best list of [[media:justysos+opt.cat.tbl_20dec.txt|fluxes]] and [[media:ysoseds_20dec.pdf|SEDs]]. NOTE THAT there are limits now in the file of fluxes. Be careful when you import it to xls.
+My final, best list of [[media:justysos+opt.cat.tbl_20dec.txt|fluxes]] and [[media:ysoseds_20dec.pdf|SEDs]]. NOTE THAT there are limits now in the file of fluxes. Be careful if/when you import it to xls.
 =Task 2=
@@ Line 327: / Line 326: @@
 *073548.5-470727 meh. no 24um possible, weird that no 2mass or optical. weak candidate because of lack of data.
 <font color="red">UPDATE Mon Dec 20 11:03:00 PST 2010</font> after redoing phot:
@@ Line 332: / Line 332: @@
 YSO candidates! 6 independent rediscoveries of previously-identified YSOs and 19 entirely new YSO candidates -- among them, based on available data, 10 reasonably high-confidence YSO candidates, 4 mid-grade confidence, and 5 low-grade confidence.  We will need to obtain spectra of all of the new ones to confirm or reject them as YSOs.
-*073049.1-470209 new - mid-grade
+*073049.1-470209 new mid-grade
-*073049.8-465806 new - mid-grade
+*073049.8-465806 new mid-grade
-*073053.6-465742 new
+*073053.6-465742 new hi-grade
-*073057.5-465611 re-disc
+*073057.5-465611 re-discovery of previously-known YSO
 *073106.5-465454 new mid-grade
-*073108.4-470130 new.
+*073108.4-470130 new hi-grade
-*073109.9-465750 new
+*073109.9-465750 new hi-grade
-*073110.8-470032 re-disc
+*073110.8-470032 re-discovery of previously-known YSO
-*073114.6-465842 new
+*073114.6-465842 new hi-grade
-*073114.9-470055 new
+*073114.9-470055 new hi-grade
-*073121.8-465745 re-disc
+*073121.8-465745 re-discovery of previously-known YSO
-*073136.6-470013 re-disc.
+*073136.6-470013 re-discovery of previously-known YSO
-*073137.4-470021 re-disc.
+*073137.4-470021 re-discovery of previously-known YSO
-*073143.8-465818 new.
+*073143.8-465818 new hi-grade
-*073144.1-470008 new
+*073144.1-470008 new hi-grade
-*073145.6-465917 new
+*073145.6-465917 new hi-grade
 *073243.5-464941 new low-grade
-*073326.8-464842 re-disc
+*073326.8-464842 re-discovery of previously-known YSO
 *073337.0-465455 new low-grade
-*073337.6-464246 new
+*073337.6-464246 new hi-grade
-*073406.9-465805 new
+*073406.9-465805 new hi-grade
 *073425.3-465409 new mid-grade
 *073439.9-465548 new low-grade

← Older revision		Revision as of 21:11, 20 December 2010
Line 415:		Line 415:

	YSO candidates by SED class on IRAC-4. I was hoping that this would show all the objects of a particular class clustered. It doesn't. This means we probably have contaminants in our list! :)		YSO candidates by SED class on IRAC-4. I was hoping that this would show all the objects of a particular class clustered. It doesn't. This means we probably have contaminants in our list! :)
		+
		+	[[image:ysobygradeoni4.png]]
		+
		+	YSO candidates by grade (previously known YSO = "Y", then A, B, C in order from highest to lowest confidence). THIS one is nice. Shows that our highest-confidence ones ARE clustered. Good news.

	=Task 10=		=Task 10=

@@ Line 17: / Line 17: @@
 <font color="red">Updates from Luisa, Mon Dec 20 09:23:45 PST 2010</font>. In order to check my own photometry, I did things in two pieces. Before finding YSO candidates, I made a variety of CMD plots to make sure that the overall distribution looked like I expected it to. (See the wiki discussion of photometry for more on this.)  Then, I proceeded with the analysis below, selecting YSO candidates, looking at images, and making SEDs. If you look at my notes below, you'll see that I made notes where there was possible or likely photometry problems. I then did a more detailed check of the YSO candidate photometry. (This is an iterative process. It always is.) Here are more notes on that.
-WARNING -- in the process of doing this, i rediscovered the factor of ~18 that was lingering last June. I think Russ merged the wrong generation of mosaics into the big mosaic. This shouldn't matter for making pretty pictures, but will definitely matter for doing photometry!
+WARNING -- in the process of doing this, i rediscovered the fact that we should not be using the big merged mosaic at MIPS for photometry, because Russ had to normalize it to get it to work. This shouldn't matter for making pretty pictures, but it will matter a lot for photometry! I went back to my smaller mosaics for the photometry at MIPS bands.
 First, a raw check of the photometry, then notes on what I was looking for/expecting to find.

← Older revision		Revision as of 20:35, 20 December 2010
Line 415:		Line 415:

	YSO candidates by SED class on IRAC-4. I was hoping that this would show all the objects of a particular class clustered. It doesn't. This means we probably have contaminants in our list! :)		YSO candidates by SED class on IRAC-4. I was hoping that this would show all the objects of a particular class clustered. It doesn't. This means we probably have contaminants in our list! :)
		+
		+	=Task 10=
		+
		+	''TASK: [...] something to do with the galaxy.''
		+
		+	I searched in [http://nedwww.ipac.caltech.edu/ NED] by position. I found that it is also called ESO 257- G 019. [http://nedwww.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=ESO+257-+G+019&extend=no&hconst=73&omegam=0.27&omegav=0.73&corr_z=1&out_csys=Equatorial&out_equinox=J2000.0&obj_sort=RA+or+Longitude&of=pre_text&zv_breaker=30000.0&list_limit=5&img_stamp=YES search results].

← Older revision		Revision as of 20:32, 20 December 2010
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	[[image:ysobyclassoni4.png]]		[[image:ysobyclassoni4.png]]

−	YSO candidates by SED class on IRAC-4	+	YSO candidates by SED class on IRAC-4. I was hoping that this would show all the objects of a particular class clustered. It doesn't. This means we probably have contaminants in our list! :)

← Older revision		Revision as of 20:31, 20 December 2010
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	YSO candidates on MIPS-1		YSO candidates on MIPS-1
		+
		+	[[image:ysobyclassoni4.png]]
		+
		+	YSO candidates by SED class on IRAC-4