Stellar cluster NGC 1850 in the LMC

Eso_eso9920e_1024

eso_eso9920e February 27th, 1999

Credit: ESO

Colour a composite of three individual exposures, taken with FORS1 at the VLT UT1 on 3 February 1999. They were obtained through B (blue), V (green), and H-alpha (red) filters, and each of them was bias-subtracted and flat-fielded before combination. The field-of-view is 6.8 x 6.8 arcmin 2, corresponding to an area of just over 300 x 300 light-years 2 at the distance of the Large Magellanic Cloud. The exposure times were 60, 60 and 450 seconds and the image quality was 1.0, 0.7 and 0.8 arcsec (FWHM) for the B, V, and H-alpha frames, respectively. The intensity scale is linear for the B and V images and logarithmic for H-alpha, in order to enhance the fine structure of the faintest parts of the nebulosity. North is 33° to the right of the vertical. It is a composite of blue and green images plus an image in the light of Hydrogen. It shows that there is indeed still much gas around NGC 1850. While part of this may well be the remnant of the "parent" gas cloud (i.e. the one from which both clusters were born), the presence of filaments and of various sharp "shocks", e.g. to the left and below NGC 1850, offers support to the theory of supernova-induced star birth in the younger of the two clusters. Some "protostars" are located near or in some of the filaments — this is interpreted as additional evidence for that theory. The nebulosity directly above the main cluster, that is shaped like a "3", is the well-known supernova remnant N103B which itself may also be associated with NGC 1850.

Provider: European Southern Observatory

Image Source: https://www.eso.org/public/images/eso9920e/

Curator: European Southern Observatory, Garching bei München, Germany

Image Use Policy: Creative Commons Attribution 4.0 International License

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Image Details

Image Type
Observation
Object Name
Large Magellanic Cloud LMC NGC 1850
Subject - Local Universe
Star > Grouping > Cluster
Eso_eso9920e_128
 

Position Details

Position (ICRS)
RA = 5h 8m 45.7s
DEC = -68° 45’ 39.1”
Orientation
North is 33.2° CW
Field of View
6.8 x 6.8 arcminutes
Constellation
Dorado

Color Mapping

  Telescope Spectral Band Wavelength
Red VLT (FORS1) Optical (H-alpha) -
Green VLT (FORS1) Optical (V) -
Blue VLT (FORS1) Optical (B) -
Eso_eso9920e_1280
×
ID
eso9920e
Subject Category
C.3.6.4  
Subject Name
Large Magellanic Cloud, LMC, NGC 1850
Credits
ESO
Release Date
1999-02-27T00:00:00
Lightyears
Redshift
Reference Url
https://www.eso.org/public/images/eso9920e/
Type
Observation
Image Quality
Distance Notes
Approximate distance in light years from: http://adsabs.harvard.edu/abs/2008A%26A...480L..37P
Facility
Very Large Telescope, Very Large Telescope, Very Large Telescope
Instrument
FORS1, FORS1, FORS1
Color Assignment
Red, Green, Blue
Band
Optical, Optical, Optical
Bandpass
H-alpha, V, B
Central Wavelength
Start Time
Integration Time
Dataset ID
Notes
Coordinate Frame
ICRS
Equinox
J2000
Reference Value
77.190579, -68.760854
Reference Dimension
1040.0, 1039.0
Reference Pixel
525.723142038, 516.644688899
Scale
-0.00010905726, 0.00010905726
Rotation
-33.15693543346
Coordinate System Projection:
TAN
Quality
Full
FITS Header
Notes
Creator (Curator)
European Southern Observatory
URL
http://www.eso.org/
Name
Email
Telephone
Address
Karl-Schwarzschild-Strasse 2
City
Garching bei München
State/Province
Postal Code
D-85748
Country
Germany
Rights
Creative Commons Attribution 4.0 International License
Publisher
European Southern Observatory
Publisher ID
eso
Resource ID
eso9920e
Metadata Date
2009-01-07T14:39:38+01:00
Metadata Version
1.1
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Detailed color mapping information coming soon...

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There is no distance meta data in this image.

 

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