|Observation data: J2000 epoch|
|Right ascension||20h 39.5m|
|Distance||1,400 ly (440 pc)|
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. The cloud contains an estimated 3,900 Solar masses of material. 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.
- Kun, M. et al. (December 2008), Reipurth, Bo, ed., "Star Forming Regions in Cepheus", Handbook of Star Forming Regions 1: p. 136, Bibcode 2008hsf1.book..136K1
- Lynds, Beverly T. (May 1962), "Catalogue of Dark Nebulae", Astrophysical Journal Supplement 7: 1, Bibcode 1962ApJS....7....1L, doi:10.1086/190072.
- Mendoza, Edgar et al. (November 2014), "Molecules with a peptide link in protostellar shocks: a comprehensive study of L1157", Monthly Notices of the Royal Astronomical Society 445 (1): 151–161, arXiv:1408.4857, Bibcode 2014MNRAS.445..151M, doi:10.1093/mnras/stu1718.
As a reminder, article comments are only for discussions on how to improve the article. Please direct other comments to a user's talk page. Please be formal and do not use excessive uppercase. Please be advised you may receive an automatic block if you break the article comments policy. For information regarding what is acceptable/not acceptable in article comments, please message Joey (talk), Natalia (talk), ynoss (talk), or Daniel (older account/talk).
|Wikimedia Commons has media related to L1157.|
Lua error in package.lua at line 95: loop or previous error loading module 'Module:Buffer'.