Astrophysical parameters of Galactic open clusters

By N. Kharchenko, A. Piskunov, S. Röser, E. Schilbach, R. Scholz. 2005

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We present a catalogue of astrophysical data for 520 Galactic open clusters. These are the clusters for which at least three most probable members (18 on average) could be identified in the ASCC-2.5, a catalogue of stars based on the Tycho-2 observations from the Hipparcos mission. We applied homogeneous methods and algorithms to determine angular sizes of cluster cores and coronae, heliocentric distances, mean proper motions, mean radial velocities, and ages. For the first time we derive distances for 200 clusters, radial velocities for 94 clusters, and ages of 196 clusters. This homogeneous new parameter set is compared with earlier determinations, where we find, in particular, that the angular sizes were systematically underestimated in the literature.

Subfields: Astronomy and Astrophysics, Instrumentation

View Paper: https://www.semanticscholar.org/paper/673f97eaf910704c55f1636b7e1ac489b961dc94

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Citations in the corpus

A high-resolution spectropolarimetric survey of Herbig Ae/Be stars – I. Observations and measurements (2012, unknown): “…(2006); (n) Guetter (1979); (o) Guetter (1981); (p) Harvey et al. (2008); (q) Herbst (1975); (r) Herbst & Shevchenko (1999); (s) Høg et al. (2000); (t) Kharchenko et al. (2005); (u) Kun, Vinkó & Szabados (2000); (v) Kun (1998); (w) Manset, Bastien & Bertout (2005); (x) Merı́n et al. (2004); (y)…”
Improved angular momentum evolution model for solar-like stars (2013, background): “NGC 6811 The cluster NGC6811 is 1000 ± 170 Myr old (Kharchenko et al. 2005; Meibom et al. 2011; Janes et al. 2013) located at a distance of 1106+95 −88 − 1240 pc (Kharchenko et al. 2005; Janes et al. 2013).”
Global survey of star clusters in the Milky Way II. The catalogue of basic parameters (2013, result): “In Table 1 we compare the basics of the current survey with our previous work on open clusters (Kharchenko et al. 2005a,b), here referred to as COCD (catalogue of open cluster data), which was based on the shallower ASCC-2.”
Discovery of an Extraordinarily Massive Cluster of Red Supergiants (2006, background): “In particular, the Galactic cluster mass function (Kharchenko et al. 2005) and stellar initial mass function (Salpeter 1955; Kroupa 2002) are both decreasing with mass and RSGs only evolve from relatively massive stars having Minitial∼8 to 25 M⊙ and ages of 6 to 15 Myr.”
Astrophysical supplements to the ASCC‐2.5: Ia. Radial velocities of ∼55000 stars and mean radial velocities of 516 Galactic open clusters and associations (2007, methodology): “Several open clusters represent association cores (e.g. ASCC 16; Briceño et al. 2005; Kharchenko et al. 2005b).”
Revisiting the population of Galactic open clusters (2005, methodology): “5 we found 520 of about 1700 known clusters (Kharchenko et al. 2004b, hereafter Paper I) and discovered 130 new open clusters (Kharchenko et al. 2005b, hereafter Paper III).”
CONSTRAINTS ON MACHO DARK MATTER FROM COMPACT STELLAR SYSTEMS IN ULTRA-FAINT DWARF GALAXIES (2016, background): “The first is the time for it to puff up to its observed size from the ∼2 pc core radius of a typical Galactic star cluster (Kharchenko et al. 2005; Harris 1996, 2010 edition).”
Clusters and mirages: cataloguing stellar aggregates in the Milky Way (2019, background): “…OC Collinder 471 110.90 13.08 2003 2210 Yes(∗) OC Sánchez et al. (2018) Basel 5 359.77 −1.87 766 995 Yes OC Angelo et al. (2019a) Svolopoilos (1966) Loden 1 281.02 −0.17 360 786 Yes OC Kharchenko et al. (2005) Han et al. (2016) corresponds to a physical velocity dispersion of less than 5 km s−1.”
The mass function of young star clusters in spiral galaxies (2008, result): “This is in fair agreement with the estimate by LAM05 (based on the catalogue of Kharchenko et al. 2005) that the most massive cluster formed within 600 pc over the past few Gyr had an initial mass of ∼105 M .”
Contact Binaries with Additional Components. I. The Extant Data (2006, methodology): “For EM Cep a distance of d = 794 pc was adopted assuming its membership in NGC7160 (Kharchenko et al. 2005).”
Chemical evolution with radial mixing (2008, methodology): “To plot these data on a consistent scale with R0 = 7.5 kpc, we have when possible recalculated the galactocentric distances from the heliocentric distances, taking the latter from Kharchenko et al. (2005) or Loktin & Beshenov (2003) when possible.”
An analytical description of the disruption of star clusters in tidal fields with an application to Galactic open clusters (2005, methodology): “To demonstrate this method we have applied it to the age distribution of open clusters in the solar neighbourhood within 600 pc based on the new cluster catalogue by Kharchenko et al. (2005).”