Cookie consent

AstroBin saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing AstroBin without changing the browser settings, you grant us permission to store that information on your device.

I agree
Getting plate-solving status, please wait...

CED 111 Chameleon I Cloud Complex

Technical card


Astrometry.net job: 3563344

RA center: 11h 5' 32"

DEC center: -77° 34' 59"

Pixel scale: 1.422 arcsec/pixel

Orientation: 5.640 degrees

Field radius: 0.675 degrees


Resolution: 2420x2420

Data source: Amateur hosting facility

Remote source: DeepSkyWest

Description

CED 111 Chameleon I Cloud Complex

OTA: TAO 150 (f/7.3)
Camera: FLI - ML16200 (1.13 arcseconds/pixel)
Observatory: Deep Sky West, Chile
EXPOSURES:
Red: 16 x 600 sec.
Blue: 17 x 600
Green: 17 x 600
L: 20 x 600
Total exposure ~11.3 hours
Image Width: ~1 deg
Processed by Alex Woronow (2020) using PixInsight, Skylum, Topaz, SWT

CED 111, Chameleon I Cloud, lies at -77 deg declination, a distance of only 500 ly, and far enough above the galactic plane such that foreground stars are scarce. This positions it well for identifying and characterizing faint young stars-and young stars abound. The overlay locates abundant YSOs (Young Stellar Objects), HH (Herbig-Haro Objects), TTau (T-Tauri ) pre-main sequence stars, IR stars, and proto-stars. Infrared observations detect most of the latter three objects, which range from accreting and compressionally heated gas/dust balls still embedded in their parent cloud to very recently ignited stars. At the tip of the red-orange streak at about (11h 9m , -77d 44m) are two T-Tauri stars, and a reasonable interpretation is that the streak itself is a flare of heated gases driven by the recent ignition.

Unlike many other star nurseries (e.g., M 78, IC 2944, NGC 1769, NGC 6334,....), which boast giant O and B stars in their stellar nurseries, CED 111’s new stars, predominantly, are low mass . Not unreasonably, different star-formational processes could account for this difference. The new stars forming in CED 111 largely arise from gravitation, cold accretion from a relatively low-density cloud, as opposed to the violence-driven accretion in the OB nurseries where shock-waves from mechanisms like cloud-cloud collisions, and the ignition of the giant stars themselves, create high-density knots in the nebula that perpetuate star-burst activity.

Comments

Author

Alex_Woronow
Alex Woronow
License: None (All rights reserved)
2664
Like

Revisions

Sky plot

Sky plot

Histogram

CED 111 Chameleon I Cloud Complex, 



    
        

            Alex Woronow