VdB 158, LBN 534 in Andromeda

  Size: 1800 px      
© Velimir Popov & Emil Ivanov 2011 - 2017

VdB 158 is a reflection nebula in the constellation Andromeda. It is located about two degrees north of the mag. 3.8 star λ Andromedae, and is the illuminated part of a long dark cloud of gas and dust that extends in northeast-southwest direction, known as LBN 534 (or GAL 110 - 13), the elongated shape of which would be the result of the collision between two molecular clouds. The cloud is illuminated by two white-blue dwarfs of spectral class B9V, cataloged as HD 222046 and HD 222086, to which is added a third star of spectral class B8V, HD 222142, the main responsible for the light received from the cloud. These three stars show a common motion, indicating that it is a group of stars physically linked to each other and having a common origin. Moreover, their distance of about 400 parsecs (1435 light years) places them in the same region as Lacerta OB1, an OB association, whose brightest star is 10 Lacertae. These star formation phenomena could also have been favored by the explosion of a supernova generated by one of the most massive members of the Lac OB1 association, as well as by the stellar wind action of the most massive components of the system, which also contributed to modeling the GAL 110-13 cloud. The event of the supernova explosion would also be confirmed by the presence of some fugitive stars observed in the vicinity of the association. The tiny planetary nebula PLN 110-12.1 could be found at upper left (see mouseover).

Image details:


Center of field RA 23:38:17 (h:m:s)
Center of field DE +48:33:26 (deg:m:s)
Size 80.5 x 56.7 (arcmin)
Pixel scale: 2.03 (arcsec/pixel)
Orientation: Up is 271 degrees E of N
Charts and image details obtained from Astrometry.net
Optic(s): ASA 12" Astrograph @ f/3.6 (Newton)
Mount: ASA DDM85 Standard
Camera: SBIG STL 11000 M
Filters: Luminance, Red, Green, Blue, Astronomik filters
Dates/Times: 17,18 Aug. 2012
Location: IRIDA Observatory, BG, longitude: E 24 44' 18", latitude: N 41 41' 42"
Exp. Details: L:12x10min., R:7x10 min, G:7x10 min, B:8x10 min, Bin 1, Total Exposure Time - 340 min (540h).
More details: Dark and flat frames reduction,
Processing: PixInsight / PS
Copyright: Velimir Popov and Emil Ivanov 2013 - 2017. All Rights Reserved
e-mail: info@irida-observatory.org
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