==========================================================================
J/ApJ/716/474 The Rosette star-forming complex. III. (Wang+, 2010)
The following files can be converted to FITS (extension .fit or fit.gz)
table[12].dat table3.dat table4.dat
==========================================================================
Query from: http://vizier.cds.unistra.fr/viz-bin/VizieR?-source=J/ApJ/716/474
==========================================================================
drwxr-xr-x 21 cats archive 4096 Jul 13 2012 [Up]
drwxr-xr-x 2 cats archive 323 Jan 13 2023 [TAR file]
-rw-r--r-- 1 cats archive 493 Dec 19 2022 .message
-r--r--r-- 1 cats archive 13382 Jul 8 2012 ReadMe
-rw-r--r-- 1 cats archive 1005 Dec 3 2012 +footg5.gif
-rw-r--r-- 1 cats archive 2490 Dec 3 2012 +footg8.gif
-r--r--r-- 1 cats archive 13650 May 30 2012 table1.dat [txt] [txt.gz] [fits] [fits.gz] [html]
-r--r--r-- 1 cats archive 3990 May 30 2012 table2.dat [txt] [txt.gz] [fits] [fits.gz] [html]
-r--r--r-- 1 cats archive 6396 May 30 2012 table3.dat [txt] [txt.gz] [fits] [fits.gz] [html]
-r--r--r-- 1 cats archive 15382 May 30 2012 table4.dat [txt] [txt.gz] [fits] [fits.gz] [html]
Beginning of ReadMe :J/ApJ/716/474 The Rosette star-forming complex. III. (Wang+, 2010)
================================================================================
A Chandra study of the Rosette star-forming complex.
III. The NGC 2237 cluster and the regions star formation history
Wang J., Feigelson E.D., Townsley L.K., Broos P.S., Roman-Zuniga C.G.,
Lada E., Garmire G.
<Astrophys. J., 716, 474-489 (2010)>
=2010ApJ...716..474W
================================================================================
ADC_Keywords: X-ray sources ; Cross identifications ; Clusters, open ;
Stars, pre-main sequence ; YSOs
Keywords: ISM: individual objects (Rosette Nebula) -
open clusters and associations: individual (NGC 2237, NGC 2244) -
stars: formation - stars: pre-main sequence - X-rays: stars
Abstract:
We present high spatial resolution Chandra X-ray images of the
NGC 2237 young stellar cluster on the periphery of the Rosette Nebula.
We detect 168 X-ray sources, 80% of which have stellar counterparts in
USNO, Two Micron All Sky Survey, and deep FLAMINGOS images. These
constitute the first census of the cluster members with
0.2< M< 2M_sun_. Star locations in near-infrared color-magnitude
diagrams indicate a cluster age around 2Myr with a visual extinction
of 1< A_V_< 3 at 1.4kpc, the distance of the Rosette Nebula's main
cluster NGC 2244. We derive the K-band luminosity function and the
X-ray luminosity function of the cluster, which indicate a population
400-600 stars. The X-ray-selected sample shows a K-excess disk
frequency of 13%. The young Class II counterparts are aligned in an
arc 3pc long suggestive of a triggered formation process induced by
the O stars in NGC 2244. The diskless Class III sources are more
dispersed. Several X-ray emitting stars are located inside the
molecular cloud and around gaseous pillars projecting from the cloud.
This X-ray view of young stars on the western side of the Rosette
Nebula complements our earlier studies of the central cluster NGC 2244
and the embedded clusters on the eastern side of the Nebula. The
large-scale distribution of the clusters and molecular material is
consistent with a scenario in which the rich central NGC 2244 cluster
formed first, and its expanding HII region triggered the formation of
the now-unobscured satellite clusters Rosette Molecular Cloud (RMC) XA
and NGC 2237. A large swept-up shell material around the HII region is
now in a second phase of collect-and-collapse fragmentation, leading
to the recent formation of subclusters.
Description:
The NGC 2237 region was observed with the Imaging Array of the Chandra
Advanced CCD Imaging Spectrometer (ACIS-I) which has a field of view
17'x17'. The 20ks ACIS-I observation was conducted on 2007 February 9.