SIMBAD references

2014ApJ...797...39B - Astrophys. J., 797, 39 (2014/December-2)

Trigonometric distance and proper motion of IRAS 20056+3350: a massive star-forming region on the solar circle.

BURNS R.A., NAGAYAMA T., HANDA T., OMODAKA T., NAKAGAWA A., NAKANISHI H., HAYASHI M. and SHIZUGAMI M.

Abstract (from CDS):

We report our measurement of the trigonometric distance and proper motion of IRAS 20056+3350, obtained from the annual parallax of H2 O masers. Our distance of D = 4.69–0.51+0.65 kpc, which is 2.8 times larger than the near kinematic distance adopted in the literature, places IRAS 20056+3350 at the leading tip of the Local arm and proximal to the solar circle. Using our distance, we reevaluate past observations to reveal IRAS 20056+3350 as a site of massive star formation at a young stage of evolution. This result is consistent with the spectral energy distribution of the source evaluated with published photometric data from UKIDSS, WISE, AKARI, IRAS, and the submillimeter continuum. Both analytical approaches reveal the luminosity of the region to be 2.4x104 L, and suggest that IRAS 20056+3350 is forming an embedded star of ≥ 16 M. We estimated the proper motion of IRAS 20056+3350 to be (µαcos δ, µδ) = (-2.62±0.33, -5.65±0.52) mas/yr from the group motion of H2 O masers, and use our results to estimate the angular velocity of Galactic rotation at the Galactocentric distance of the Sun, Ω0= 29.75±2.29 km/s./kpc, which is consistent with the values obtained for other tangent point and solar circle objects.

Abstract Copyright:

Journal keyword(s): Galaxy: fundamental parameters - Galaxy: structure - masers - stars: individual: IRAS 20056+3350

CDS comments: Sources in table 4 are not in SIMBAD.

Simbad objects: 14

goto Full paper

goto View the reference in ADS

To bookmark this query, right click on this link: simbad:2014ApJ...797...39B and select 'bookmark this link' or equivalent in the popup menu


2019.11.12-02:59:27

© Université de Strasbourg/CNRS

    • Contact