Notes on SEDs from BRC27

First pass, september

• 070349.6-112346 - we need to check the photometry for i2, i3, i4 - either i2 is low or i3 is high, or i3+i4 are both a little high. If this is a YSO, it is a very low excess, probably not significant.
• 070349.8-112822 - Shevchenko 88 - no IR excess.
• 070351.1-112054 - yuk. drop.
• 070352.2-112100 - Chauhan 109 - disjoint, problem child. extended emission at 2mass bands, that could be affecting photometry at all bands. could also be intrinsic variability. Need to chase down missing photometry at one of the irac bands
• 070352.7-112313 - ogura 2/chauhan 81 - no IR excess.
• 070352.7-112416 - drop
• 070353.2-112403 - ogura 3 - nice little YSO. double-check i3i4 phot to be sure.
• 070353.5-112350 - shev 90 - bright star, likely early type (check lit tables), POSSIBLE excess at i3i4
• 070352.7-112428 - ogura 4/chauhan 82 - check i3i4 photometry
• 070354.4-112829 - shev 92/gregorio 69 - also bright early type, only i2i4 data. prob no excess.
• 070354.6-112011 - chauhan 108 - one of hte problem children. disjoint. extended emission. can we resolve into two sources? if this resolved in 2mass, we should be able to resolve it in irac; need to chase photmetry.
• 070354.9-112514 - ogura5 - why only 3 bands of irac - chase that photometry, prob no excess?
• 073557.7-112031 - gregorio71 - no excess. not a lot of data either.
• 070357.1-112432 - ogura 7 - nice disk
• 070358.4-112325 - check i3 photometry. without that point, could be a nice SED.
• 070359.7-112309 - ditch it
• 070400.7-112323 - nice little SED, high Av in JHK points, strong disk at m24, but could worry abotu source confusion (e.g., more stars than just one in the mips beam). check images for contaminating sources.
• 070401.2-112531 - nice little SED
• 070401.2-112242 - check irac photometry.
• 070401.2-112233 - nice little sed
• 070401.3-112334 - greg74 - really nice SED, check i3
• 070401.6-112406 - go look in the images - i think this may be a galaxy. go check irac photometry too.
• 070401.6-112132 - check irac 3 photometry - nice
• 070402.1-112512 - check all irac bands
• 070402.2-112542 - this is a galaxy - 8 um point is high, and it's a flat sed. check the images to be sure, but my guess is it's a QSO.
• 070402.3-112539 - little bit of excess, very bright,
• 070402.7-112325 - probably a galaxy. check images.
• 070402.9-112337 - ogura8+9 - nice SED.
• 070403.0-112350 - ogura10 - check i3, nice SED
• 070403.1-112327 - chauhan 107 - one of our problem children with extended emission in 2mass.
• 070403.9-112609 - shev102 - bright obj, slight IR excess if at all.
• 070403.9-112326 - check i3, could be a nice one
• 070404.2-112355 - ogura12/chauhan86 - nice one
• 070404.5-112555 - ogura13 - i wish we had 2 more points. no disk?
• 070404.7-112339 - ogura 14 - check i3
• 070404.9-112245 - drop
• 070405.1-112313 - ogura15/chauhan 88 - nice
• 070405.5-112337 - check irac photom all bands - iffy. likely bad photometry
• 070405.6-112354 - drop?? check for why no 2mass, is in the catalog but with bad photqual flags.
• 070405.7-112123 - check i3 phot. icky otherwise.
• 070405.9-112209 - drop
• 070405.9-112358 - ogura 16 - nice one!
• 070406.0-112315 - ogura 17 - nice one. check i3.
• 070406.4-112336 - ogura 18 - nice one. check i3
• 070406.5-112227 - yeah, could be - check i3i4
• 070406.5-112128 - icky, drop
• 070406.5-112316 - ogura 19 - nice one. check i3i4
• 070407.9-112311 - ogura 21: - icky? check photometry - make sure that there is good photometry actually of this source.
• 070408.0-112354 - ogura 22 - nice one. worry about src conf m24
• 070508.1-112313 - ogura 21+23: - icky? check photometry - make sure that there is good photometry actually of this source.
• 070408.1-112309 - ogura 23:, chauhan 98 - check photometry - make sure that there is good photometry actually of this source. only 2 two mass, what happened to 3rd.
• 070409.9-112316 - wiram23/ogura25/chau100 - nice one
• 070411.2-111647 - greg78 - only 2 bands irac but looks like there might be a disk. chekc photom.
• 070413.2-111900 - shev 111/greg 81 - nice sed with one opt point off maybe source mismatch, or extended emission or legitimate variability given that the other points line up.

TO DO LIST:

• check that i copied the cross ids into this file correctly... i was working as we talked, so it might be wrong! (Done 11/9, LMR)
• check photometry for the ones that need checking (Done by the whole team, 11/9)
• check images for the ones that need checking
• compare this list to our problem children from before - any of the problem children on the old list not identified as such here too? (Done by Chelen, october)
• decide out of this assessment which ones are being dropped for sure and being kept for sure
• chase the 3 deep in bright nebulosity for which there are only 2 bands of irac data and for which there are not irac phot in the catalog. can we get viable phot out? are they disky ysos?
• see if we can add WISE photometry to any object, especially those known YSOs with only partial IRAC coverage. (partially done, LMR, 29 sep)
• count up number of objects in which bins: rediscovered as having ir excess, newly discovered as having IR excess, checked and noted as not having IR excess, dropped because we think they're galaxies, and dropped for bad phot (for our records, in case anyone asks)
• make color-color and color mag plots of these groupings of objects. are they in the 'right' regions of the diagrams?
• look at locations on the images of these groupings of objects. are they in 'good' regions of sky? (are YSO candidates near nebulosity, for example, and galaxies far away from it?)
• fit slopes to SED to obtain classes, and count up ones in each bin (0, I, flat, II, III) (john's made headway on this)
• possibly obtain and add optical data
• if/when more optical data, go back through and reassess SEDs for feasibility in this same vein
• if/when more optical data, make more color mag and color color plots to assess for viability.

repeat for BRC 34 ...

second pass, 10 Nov

• 070349.6-112346 - with the new and improved i3, it no longer shows up as having an IR excess. --> DROP THIS
• 070349.8-112822 - Shevchenko 88 - no IR excess. Keep because previously known.
• 070351.1-112054 - still drop.
• 070352.2-112100 - Chauhan 109 - problem child. extended emission at 2mass bands. Oregon notes: "i3 difficult, i4 little blob, but I don’t think the photometry is reasonable". Florida only contributors to i4 flux. Large dispersion in i3 measurements from all of us. Took average of FL,OR,MN for i3, FL for i4 (with a large error). WISE is undoubtedly subject to the same issues. Need to spend some more time thinking about what is going on here.
• 070352.7-112313 - ogura 2/chauhan 81 - no IR excess. Notes from group xls: "i4 very low and difficult to extract." no one reported i4 values; two (OR, MN) reported i3 values. took average of i3 values, with very large error bar. Possibly this should be converted to a limit, not clear. Definitely no excess, though. Keep because previously known YSO.
• 070352.7-112416 - still drop
• 070353.2-112403 - ogura 3 - took average of reported redone values for i3i4. IR excess still there, though low.
• 070353.5-112350 - shev 90 - bright star, A0 in the literature. before, noted there might have been a small exess i3i4; took average of your new values, now clear no excess. keep because previously known. notes from xls: "Lots of extra light from nearby star in annulus in i1 & i2" but it's doing ok -- look at the SED. so it can't be too contaminated!
• 070352.7-112428 - ogura 4/chauhan 82 - i3i4 was high before. took average of reported redone values for i3i4. i3 changed a lot, i4 not so much. This thing *may* have a small excess at i4.

STOPPPED HERE

• 070354.4-112829 - shev 92/gregorio 69 - also brightB2, only i2i4 data. prob no excess. NOT IN GROUP XLS!
• 070354.6-112011 - chauhan 108 - one of hte problem children. disjoint. extended emission. can we resolve into two sources? if this resolved in 2mass, we should be able to resolve it in irac; need to chase photmetry.
• 070354.9-112514 - ogura5 - why only 3 bands of irac - chase that photometry, prob no excess?
• 073557.7-112031 - gregorio71 - no excess. not a lot of data either.
• 070357.1-112432 - ogura 7 - nice disk
• 070358.4-112325 - check i3 photometry. without that point, could be a nice SED.
• 070359.7-112309 - ditch it
• 070400.7-112323 - nice little SED, high Av in JHK points, strong disk at m24, but could worry abotu source confusion (e.g., more stars than just one in the mips beam). check images for contaminating sources.
• 070401.2-112531 - nice little SED
• 070401.2-112242 - check irac photometry.
• 070401.2-112233 - nice little sed
• 070401.3-112334 - greg74 - really nice SED, check i3
• 070401.6-112406 - go look in the images - i think this may be a galaxy. go check irac photometry too.
• 070401.6-112132 - check irac 3 photometry - nice
• 070402.1-112512 - check all irac bands
• 070402.2-112542 - this is a galaxy - 8 um point is high, and it's a flat sed. check the images to be sure, but my guess is it's a QSO.
• 070402.3-112539 - little bit of excess, very bright,
• 070402.7-112325 - probably a galaxy. check images.
• 070402.9-112337 - ogura8+9 - nice SED.
• 070403.0-112350 - ogura10 - check i3, nice SED
• 070403.1-112327 - chauhan 107 - one of our problem children with extended emission in 2mass.
• 070403.9-112609 - shev102 - bright obj, slight IR excess if at all.
• 070403.9-112326 - check i3, could be a nice one
• 070404.2-112355 - ogura12/chauhan86 - nice one
• 070404.5-112555 - ogura13 - i wish we had 2 more points. no disk?
• 070404.7-112339 - ogura 14 - check i3
• 070404.9-112245 - drop
• 070405.1-112313 - ogura15/chauhan 88 - nice
• 070405.5-112337 - check irac photom all bands - iffy. likely bad photometry
• 070405.6-112354 - drop?? check for why no 2mass, is in the catalog but with bad photqual flags.
• 070405.7-112123 - check i3 phot. icky otherwise.
• 070405.9-112209 - drop
• 070405.9-112358 - ogura 16 - nice one!
• 070406.0-112315 - ogura 17 - nice one. check i3.
• 070406.4-112336 - ogura 18 - nice one. check i3
• 070406.5-112227 - yeah, could be - check i3i4
• 070406.5-112128 - icky, drop
• 070406.5-112316 - ogura 19 - nice one. check i3i4
• 070407.9-112311 - ogura 21: - icky? check photometry - make sure that there is good photometry actually of this source.
• 070408.0-112354 - ogura 22 - nice one. worry about src conf m24
• 070508.1-112313 - ogura 21+23: - icky? check photometry - make sure that there is good photometry actually of this source.
• 070408.1-112309 - ogura 23:, chauhan 98 - check photometry - make sure that there is good photometry actually of this source. only 2 two mass, what happened to 3rd.
• 070409.9-112316 - wiram23/ogura25/chau100 - nice one
• 070411.2-111647 - greg78 - only 2 bands irac but looks like there might be a disk. chekc photom.
• 070413.2-111900 - shev 111/greg 81 - nice sed with one opt point off maybe source mismatch, or extended emission or legitimate variability given that the other points line up.