Reddening behaviors of young stellar objects in Spitzer /IRAC bands

被引：0
|
作者：
机构：
[1] Sim, Chae Kyung
[2] 1,Kim, Sungsoo S.
[3] 1,Lee, Jeong-Eun
[4] 1,Kim, Sang Joon
来源：
| 1600年 / EDP Sciences卷 / 556期
关键词：
We investigate the reddening behaviors of young stellar objects (YSOs) in the photometric system of the InfraRed Array Camera (IRAC) onboard the Spitzer Space Telescope. We constructed a couple of model extinction laws for the IRAC wavelength range that are composed of a power-law function and a 9.7 μm absorption bump by silicates. We then calculated reddened colors of the YSOs in 3 different evolutionary stages with various masses and disk inclinations by convolving the adopted model spectral energy distributions (SEDs) with the spectral response functions of the IRAC bands for KS-band extinction values of up to 8 mag. We find that the reddening vectors of YSOs in the [3.6]-[4.5] vs. [5.8]-[8.0] diagrams are considerably SED-dependent and can be highly nonlinear in some cases. Many YSOs show a bluening (as opposed to the reddening) in the [5.8]-[8.0] color owing to the 9.7 μm bump in the extinction law. Our findings imply that dereddening in a color-color or color-magnitude diagram involving the [8.0] band might be highly unreliable unless the SED of the source and the extinction law are at least approximately known. © ESO; 2013;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Journal article (JA)
引用
收藏
相关论文
共 50 条
  • [41] Mass loss in young stellar objects
    Bastien, P
    ASTROPHYSICS AND SPACE SCIENCE, 1998, 260 (1-2) : 135 - 144
  • [42] Outflow collimation in young stellar objects
    Mellema, G
    Frank, A
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1997, 292 (04) : 795 - 807
  • [43] Mass Loss in Young Stellar Objects
    P. Bastien
    Astrophysics and Space Science, 1998, 260 : 135 - 144
  • [44] Magnetic activities in Young Stellar Objects
    Tsuboi, Y
    Hamaguchi, K
    Koyama, K
    Yamauchi, S
    ASTRONOMISCHE NACHRICHTEN, 1999, 320 (4-5) : 175 - 176
  • [45] The submillimetre colour of young stellar objects
    Dent, WRF
    Matthews, HE
    Ward-Thompson, D
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1998, 301 (04) : 1049 - 1063
  • [46] CIRCUMSTELLAR MATERIALS OF YOUNG STELLAR OBJECTS
    SATO, S
    PROGRESS OF THEORETICAL PHYSICS SUPPLEMENT, 1988, (96): : 37 - 49
  • [47] YOUNG STELLAR OBJECTS DETECTED BY IRAS
    CLARK, FO
    ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 1991, 75 (02): : 611 - 628
  • [48] Magnetic environments of young stellar objects
    Chrysostomou, A
    Curran, R
    Aitken, D
    Jenness, T
    Davis, C
    ASTROPHYSICS AND SPACE SCIENCE, 2003, 287 (1-4) : 161 - 164
  • [49] On the interferometric sizes of young stellar objects
    Monnier, JD
    Millan-Gabet, R
    ASTROPHYSICAL JOURNAL, 2002, 579 (02): : 694 - 698
  • [50] Emission Objects in Young Stellar Clusters
    Solovyeva, Y. N.
    Fabrika, S. N.
    Vinokurov, A. S.
    Sholukhova, O. N.
    Valeev, A. F.
    STARS: FROM COLLAPSE TO COLLAPSE, 2017, 510 : 58 - 59
12345