155 Micron Continuum Emission from the Galactic Plane near l = 50 Degrees Observed by IRTS

Publications of the Astronomical Society of Japan

Nakagawa, Takao¹  Matsuhara, Hideo²  Hiromoto, Norihisa³  Makiuti, Sin'itirou¹  Okumura, Ken'ichi³  Okuda, Haruyuki¹  Shibai, Hiroshi¹ 

[1] The Institute of Space and Astronautical Science, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 229;Department of Physics, School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-01;Communications Research Laboratory, 4-2-1 Nukui-Kitamachi, Koganei, Tokyo 184 E-mail (KO):

关键词: "Galaxies: Milky Way";    "Infrared: spectra";    "Interstellar: dust";    "Interstellar: medium";    Spacecraft;   

DOI  :  10.1093/pasj/48.6.L123

学科分类：天文学(综合)

来源: Oxford University Press

【 摘 要 】

The155μmcontinuumemissionfromthegalacticplanearoundl=50°wasobservedwithan8′×13′beambytheFar-InfraredLineMapper(FILM)aboardtheInfraredTelescopeinSpace(IRTS).TheobservedmapnoticeablyresemblestheIRAS100μmmap.Thedusttemperaturecalculatedfromtheirfluxratioisalmostconstant(16–18K)throughouttheobservedarea,exceptfortheHIIregions.ThedusttemperaturesintheHIIregionsaresignificantlyhigherthaninthesurroundingregion;thereisaclearboundarybetweenthecoldandhotregions.Theobserveduniformityofthedusttemperature,exceptforintheHIIregions,impliesthatthestrengthoftheaverageinterstellarradiationfield(ISRF)alongeachlineofsightisalmostconstant(i.e.,variesbylessthanafactorof2)intheobservedregionofthegalacticplane.

【 授权许可】

Unknown