2020/11/05 by Helong Guo, H. -L. Guo, B. -Q. Chen +13
Physics and Astronomy · #Astronomy #Astrophysics #Astrophysics and Star Formation Studies #Galaxies: Formation, Evolution, Phenomena #Galaxy #Physics #Planck #Quadrant (abdomen) #Stars #Stellar, planetary, and galactic studies #Virial theorem #astro-ph.GA #astro-ph.SR
paper · pdf · doi:10.1093/mnras/staa3478
9 pages, 5 figures, accepted for publication in MNRAS
arxiv created 2020/11/05 · openalex publication_date 2020/11/09 · arxiv updated 2020/11/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
ABSTRACT Determining the distances to the Planck Galactic cold clumps (PGCCs) is crucial for the measurement of their physical parameters and the study of their Galactic distribution. Based on two large catalogues of stars with robust distances and reddening estimates from the literature, we have estimated accurate distances to 61 PGCCs in the second Galactic quadrant. For this purpose, we have selected stars along the sightlines overlapping with the cores of the sample clumps and fitted the reddening profiles with a simple reddening model. The typical uncertainties of the resultant distances of these PGCCs are less than 8 per cent. The new estimates differ significantly from the kinematic values, well known to suffer from large errors. With the new distances, we have updated the physical properties including the radii, masses, and virial parameters of the cores of the PGCCs.