Far-infrared characteristics of K dwarfs with H-alpha emission

Abstract

view Abstract Citations (7) References (21) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Far-Infrared Characteristics of K Dwarfs with H alpha Emission Johnson, H. M. Abstract A sample of K dwarfs with H-alpha emission have counterparts in the IRAS Point Source Catalog. They show two types of infrared spectral behavior, either net decline of emergent flux density from 0.55 micron to at least 12 microns, approximately like normal K dwarfs without H-alpha emission, or net rise in this spectral range, as though with radiation from cool circumstellar matter. Behavior type is not well associated with H-alpha emission strength. Declining spectra are detectable with IRAS to about 30 pc, but rising spectra are not found in this volume so they must be less abundant. Stars with rising spectra may be associated with nebulosity, but one of them, TW Hya, is an exception to the later dependence. Publication: The Astrophysical Journal Pub Date: January 1986 DOI: 10.1086/163813 Bibcode: 1986ApJ...300..401J Keywords: Dwarf Stars; Emission Spectra; Far Infrared Radiation; H Alpha Line; Infrared Stars; K Stars; Late Stars; Infrared Astronomy Satellite; Optical Properties; Radiant Flux Density; Stellar Envelopes; Astrophysics; INFRARED: SOURCES; STARS: EMISSION-LINE; STARS: LATE-TYPE full text sources ADS | data products SIMBAD (19)