The tiny globulettes in the Carina nebula

@article{Grenman2014TheTG,
  title={The tiny globulettes in the Carina nebula},
  author={Tiia Grenman and Gosta F. Gahm},
  journal={Astronomy and Astrophysics},
  year={2014},
  volume={565}
}
Context. Small molecular cloudlets are abundant in many Hii regions surrounding newborn stellar clusters. In optical images these so-called globulettes appear as dark silhouettes against the bright nebular background. Aims. We aim to make an inventory of the population of globulettes in the Carina nebula complex, and to derive sizes and masses for comparisons with similar objects found in other Hii regions. Methods. The globulettes were identified from H images collected at the Hubble Space… 

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References

SHOWING 1-10 OF 41 REFERENCES

Mass and motion of globulettes in the Rosette Nebula

Context. Tiny molecular clumps are abundant in many H II regions surrounding newborn stellar clusters. In optical images these so-called globulettes appear as dark patches against the background of

Globulettes as Seeds of Brown Dwarfs and Free-Floating Planetary-Mass Objects

Some H II regions surrounding young stellar clusters contain tiny dusty clouds, which on photos look like dark spots or teardrops against a background of nebular emission. From our collection of Hα

Numerous Proplyd Candidates in the Harsh Environment of the Carina Nebula

We report the discovery of dozens of compact objects in the Carina Nebula (NGC 3372) that closely resemble proplyds (photoablating protoplanetary disks and dark silhouette disks) seen previously in

Herschel far-infrared observations of the Carina Nebula complex - I. Introduction and global cloud structure

The Carina Nebula represents one of the most massive galactic star forming regions and displays a high level of massive star feedback. We used SPIRE and PACS onboard of Herschel to map the full

Herschel far-infrared observations of the Carina Nebula complex II: The embedded young stellar and protostellar population

Context. The Carina Nebula represents one of the largest and most active star forming regions known in our Galaxy. It contains numerous very massive (M > 40 M� ) stars that strongly affect the

Disks, Microjets, Windblown Bubbles, and Outflows in the Orion Nebula

New deep narrowband images of the Orion Nebula obtained with WFPC2 on the Hubble Space Telescope (HST) and spectra taken with the HIRES spectrometer at the Keck Observatory are presented. We report

The clump mass function of the dense clouds in the Carina Nebula

Context. The question how the initial conditions in a star-forming region affect the resulting mass function of the forming stars is one of the most fundamental open topics in star formation theory.

Carina's defiant Finger: HST observations of a photoevaporating globule in NGC 3372 *

We present Hubble Space Telescope Wide Field Planetary Camera 2 images of a prominent externally-ionized molecular globule in the Carina Nebula (NGC 3372), supplemented with ground-based infrared

Cloud Fragmentation and Proplyd-like Features in H II Regions Imaged by the Hubble Space Telescope

We have analyzed Hubble Space Telescope ACS and WFPC2 new and archival images of eight H II regions to look for new protoplanetary disks (proplyds) similar to those found in the Orion Nebula. We find

Direct Imaging of Circumstellar Disks in the Orion Nebula

We present observations of the Orion Nebula made with the Hubble Space Telescope in which a number of stars are seen surrounded by dark silhouettes seen projected against the bright background H II