SIMBAD references

2002A&A...390..931O - Astronomy and Astrophysics, volume 390, 931-935 (2002/8-2)

The very reddened open clusters Pismis 23 (Lynga 10) and Stephenson 2.


Abstract (from CDS):

Pismis 23 and Stephenson 2 are two very reddened open clusters, projected close to the Galactic plane. We present VI and JH photometry for Pismis 23 and I and Gunn z for Stephenson 2. We derive a relatively old age of ∼700Myr for Pismis 23, with a reddening value of E(B-V)=1.73 and a distance d≃2.6kpc from the Sun. Stephenson 2 has a clump of red supergiants, indicating a young age of about 20Myr, somewhat younger and more distant (d≃6kpc) than recently reported in the literature. The age estimate for such a young object is crucial for the distance estimate. The high reddening of these two clusters relative to predictions from the diffuse interstellar medium at their distances is due to discrete intervening clouds.

Abstract Copyright:

Journal keyword(s): open clusters and associations: individual: Pismis 23, Stephenson 2 - stars: Hertzsprung-Russell (HR) and C-M diagrams

VizieR on-line data: <Available at CDS (J/A+A/390/931): pismis23.dat stephen2.dat>

Nomenclature: Table 2: Cl* Pismis 23 OBB NNNN (Nos 1-5426). Table 3: Cl* Stephenson 2 OBB NNNN (Nos 1-2687).

Status at CDS : All or part of tables of objects will not be ingested in SIMBAD.

Simbad objects: 13

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