L1157

L 1157
Dark nebula
Observation data: J2000 epoch
Right ascension20h 39.5m [1]
Declination+68° 00.7′[1]
Distance1,400 ly   (440[1] pc)
ConstellationCepheus
See also: Lists of nebulae

L 1157 is a dark nebula in the constellation Cepheus. It was catalogued in 1962 by U.S. astronomer Beverly T. Lynds in her Catalogue of Dark Nebulae, becoming the 1157th entry in the table; hence the designation.[2] The cloud contains an estimated 3,900 Solar masses of material.[1] It includes protostars that are ejecting material in bipolar outflows, forming bow shocks in the surrounding ambient gas. Formamide and HCNO have been detected in these shocked regions, among other compounds.[3]

  1. ^ a b c d Cite error: The named reference Kun2008 was invoked but never defined (see the help page).
  2. ^ Cite error: The named reference Lynds1962 was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference Mendoza2014 was invoked but never defined (see the help page).