Publications of the Astronomical Society of Japan | |
155 Micron Continuum Emission from the Galactic Plane near l = 50 Degrees Observed by IRTS | |
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
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