Talk:CG4 Spring work - Revision history

Rebull at 22:57, 21 April 2010

2010-04-21T22:57:46Z

Rebull at 22:35, 21 April 2010

2010-04-21T22:35:42Z

Hoette at 22:28, 21 April 2010

2010-04-21T22:28:08Z

Mccarron at 22:15, 21 April 2010

2010-04-21T22:15:16Z

Mccarron at 22:14, 21 April 2010

2010-04-21T22:14:21Z

Rebull at 04:13, 15 April 2010

2010-04-15T04:13:48Z

Rebull at 04:13, 15 April 2010

2010-04-15T04:13:05Z

Mccarron at 23:03, 14 April 2010

2010-04-14T23:03:01Z

Mccarron at 22:59, 14 April 2010

2010-04-14T22:59:14Z

Mccarron at 22:38, 14 April 2010

2010-04-14T22:38:30Z

@@ Line 104: / Line 104: @@
 =For Apr 28: CHELEN -- Kim 2005 =
-http://articles.adsabs.harvard.edu/cgi-bin/nph-iarticle_query?2003ASPC..287..275K&data_type=PDF_HIGH&whole_paper=YES&type=PRINTER&filetype=.pdf
+http://adsabs.harvard.edu/abs/2005AJ....129.1564K
 ==''Main Point''==

@@ Line 82: / Line 82: @@
 Full Paper link click here. [http://origins.colorado.edu/cs12/proceedings/poster/kimxx.pdf]
-==''Main Point''== High mass stars can terminate low mass star formation (LMSF) or they can trigger it.
+==''Main Point''==
-==''High Level Summary''== Pressure induced by winds and radiation from high mass stars and by radiation can sweep away low density clouds surrounding low mass stars, but can also collapse the surrounding clouds and start low mass star formation (LMSF) in the cores of these remnant clouds. Cometary globules in places like the Gum Nebula are perfect places to study this triggered LMSF. CGs are evaporating molecular cloud cores with head-tail geometry.  The head points towards the HMS source of the winds and radiation causing the evaporation.
+==''High Level Summary''==
-==''What they did''== They analyzed X-Ray ROSAT/HRI data, Optical Data for photometry from CTIO/0.9m, and Near-IR using JHK images from the CIRIM detector on the CTIO/1.5m telescope.
+==''What they did''==
-==''Most Interesting''== Section 3.2 addresses our CG4.  They did optical photometry.
+==''Most Interesting''==
 ==''I agree with this''==
-==''I disagree with this''== Did they get different object data on different telescopes of the same or different regions.  I'll explain better on the phone.
+==''I disagree with this''==
-==''Why we should care''== Summary states that "There are indeed candidate PMS stars in .... CG4 .....  They think there are a few PMS stars in CG4; that there are none around the eroded head of CG4 and suggest that there is an age gradient from the head to the tail. The suggested explanation is that the LMSF in the region may have been gradual and under the influence of the high mass stars in Vela OB2.
+==''Why we should care''==

@@ Line 82: / Line 82: @@
 Full Paper link click here. [http://origins.colorado.edu/cs12/proceedings/poster/kimxx.pdf]
-==''Main Point''==
+==''Main Point''== High mass stars can terminate low mass star formation (LMSF) or they can trigger it.
-==''High Level Summary''==
+==''High Level Summary''== Pressure induced by winds and radiation from high mass stars and by radiation can sweep away low density clouds surrounding low mass stars, but can also collapse the surrounding clouds and start low mass star formation (LMSF) in the cores of these remnant clouds. Cometary globules in places like the Gum Nebula are perfect places to study this triggered LMSF. CGs are evaporating molecular cloud cores with head-tail geometry.  The head points towards the HMS source of the winds and radiation causing the evaporation.
-==''Most Interesting''==
+==''What they did''== They analyzed X-Ray ROSAT/HRI data, Optical Data for photometry from CTIO/0.9m, and Near-IR using JHK images from the CIRIM detector on the CTIO/1.5m telescope.
 ==''I agree with this''==
-==''I disagree with this''==
+==''I disagree with this''== Did they get different object data on different telescopes of the same or different regions.  I'll explain better on the phone.
-==''Why we should care''==
+==''Why we should care''== Summary states that "There are indeed candidate PMS stars in .... CG4 .....  They think there are a few PMS stars in CG4; that there are none around the eroded head of CG4 and suggest that there is an age gradient from the head to the tail. The suggested explanation is that the LMSF in the region may have been gradual and under the influence of the high mass stars in Vela OB2.

@@ Line 43: / Line 43: @@
 ==''Not sure about this''==
 Questions and Kevin trying to dodge the answers
 TiO and MgH
 using the width and

@@ Line 42: / Line 42: @@
 ==''Not sure about this''==
-Quesitons and Kevin trying to dodge the questions
+Questions and Kevin trying to dodge the answers
 TiO and MgH
 using the width and

@@ Line 112: / Line 112: @@
 =For May 5: CAROLYN -- Choudhury and Bhatt 2008  =
 http://arxiv.org/PS_cache/arxiv/pdf/0811/0811.4389v1.pdf
-    the ADS entry is http://adsabs.harvard.edu/abs/2009MNRAS.393..959C
+the ADS entry is http://adsabs.harvard.edu/abs/2009MNRAS.393..959C  and I downloaded the real journal article for you (easier to read!) here: [[media:choud.pdf]]
 ==''Main Point''==

@@ Line 1: / Line 1: @@
-For Apr 14:
+=For Apr 14: KEVIN -- Reipurth and Pettersson 1993 =
-    * KEVIN -- Reipurth and Pettersson 1993
+==''Main Point''==
 Found 8 new YSOs in Gum Nebula (near CG4 and Sa101 and CG13) using IR photometry, UBV photometry and spectroscopy.
-*''High Level Summary''
+==''High Level Summary''==
 Surveyed 5 fields with 15 cometary globules
 Found 8 new YSOs
@@ Line 25: / Line 23: @@
 ruled out forground/background with spectra and
-*''Most Interesting''
+==''Most Interesting''==
 Introduction:
 Good description of cometary nebulae
@@ Line 43: / Line 41: @@
 M2, M3-4, K7-M0, K7, K2-5, K5, M1-2, K2
-*''Not sure about this''
+==''Not sure about this''==
 Quesitons and Kevin trying to dodge the questions
 TiO and MgH
@@ Line 58: / Line 56: @@
-*''I agree with this''
+==''I agree with this''==
 found eight new YSOs in the area
@@ Line 65: / Line 63: @@
 Found late-type premain sequence stars
-*''I disagree with this''
+==''I disagree with this''==
 found there are different ages (spectra and movement away from globule)
 probably continuous (from 8 stars?)
-*''Why we should care''
+==''Why we should care''==
 found seven new YSOs in the area
@@ Line 79: / Line 77: @@
-For Apr 21:
+=For Apr 21: VIVIAN -- Kim et al 2003=
-    *VIVIAN -- Kim et al 2003 http://adsabs.harvard.edu/abs/2003csss...12..799K
+http://adsabs.harvard.edu/abs/2003csss...12..799K
-     Full Paper link click here. [http://origins.colorado.edu/cs12/proceedings/poster/kimxx.pdf]
+Full Paper link click here. [http://origins.colorado.edu/cs12/proceedings/poster/kimxx.pdf]
-*''Main Point''
+==''Main Point''==
-*''High Level Summary''
+==''High Level Summary''==
-*''Most Interesting''
+==''Most Interesting''==
-*''I agree with this''
+==''I agree with this''==
-*''I disagree with this''
+==''I disagree with this''==
-*''Why we should care''
+==''Why we should care''==
-For Apr 28:
+=For Apr 28: CHELEN -- Kim 2005 =
-    *CHELEN -- Kim 2005
+http://articles.adsabs.harvard.edu/cgi-bin/nph-iarticle_query?2003ASPC..287..275K&data_type=PDF_HIGH&whole_paper=YES&type=PRINTER&filetype=.pdf
-*''Main Point''
+==''Main Point''==
-*''High Level Summary''
+==''High Level Summary''==
-*''Most Interesting''
+==''Most Interesting''==
-*''I agree with this''
+==''I agree with this''==
-*''I disagree with this''
+==''I disagree with this''==
-*''Why we should care''
+==''Why we should care''==
-For May 5:
+=For May 5: CAROLYN -- Choudhury and Bhatt 2008  =
-    *CAROLYN -- Choudhury and Bhatt 2008
+http://arxiv.org/PS_cache/arxiv/pdf/0811/0811.4389v1.pdf
      the ADS entry is http://adsabs.harvard.edu/abs/2009MNRAS.393..959C
      and I downloaded the real journal article for you (easier to read!) here: [[media:choud.pdf]]
-*''Main Point''
+==''Main Point''==
-*''High Level Summary''
+==''High Level Summary''==
-*''Most Interesting''
+==''Most Interesting''==
-*''I agree with this''
+==''I agree with this''==
-*''I disagree with this''
+==''I disagree with this''==
-*''Why we should care''
+==''Why we should care''==

@@ Line 29: / Line 29: @@
 Good description of cometary nebulae
 Good rundown of CG formation theory
 .  OB starformed nearby and the UV radiation scrunched and eroded nearby nebula (some evidence in this paper for this method)
 .  or SN went off nearby and shockwave scrunched and eroded nearby nebula
 CG4 might have been evaporating for 1,000,000years

@@ Line 14: / Line 14: @@
 Equipment Used
-Ha spectroscopy                      CTIO 60/90cm Curtis Schmidt telescope with 6deg prism    1-2hrs
+  Ha spectroscopy                      CTIO 60/90cm Curtis Schmidt telescope with 6deg prism    1-2hrs
-JHK IR photometry (sort of like us)  ESO 1m        J-H and H-K
+  JHK IR photometry (sort of like us)  ESO 1m        J-H and H-K
-UBV photometry (like us)             ESO 1m
+  UBV photometry (like us)             ESO 1m
-Point source spectroscopy            ESO 1.52m and 3.6m        3700A to 7000A                    10-40 min
+  Point source spectroscopy            ESO 1.52m and 3.6m        3700A to 7000A                    10-40 min
 found there are different ages (spectra and movement away from globule)