SIMBAD references

2014MNRAS.438.1451L - Mon. Not. R. Astron. Soc., 438, 1451-1465 (2014/February-3)

Sejong Open Cluster Survey (SOS) - II. IC 1848 cluster in the HII region W5 West.


Abstract (from CDS):

IC 1848 is one of the young open clusters in the giant star-forming Cas OB6 association. Several interesting aspects relating to star formation processes in giant star-forming regions attracted us to study the initial mass function (IMF), star formation mode and properties of pre-main-sequence (PMS) stars. A UBVI and Hα photometric study of the young open cluster IC 1848 was conducted as part of the `Sejong Open Cluster Survey'. We have selected 105 early-type members from photometric diagrams. Their mean reddening is <E(B - V)> = 0.660±0.054mag. Using the published photometric data with near- and mid-infrared archival data we confirmed the normal reddening law (RV = 3.1) towards the cluster (IC 1848). A careful zero-age main-sequence fitting gives a distance modulus of V0 - MV = 11.7±0.2mag, equivalent to 2.2±0.2 kpc. Hα photometry and the list of young stellar objects identified by Koenig et al. permitted us to select a large number of PMS stars comprising 196 Hα emission stars, 35 Hα emission candidates, 5 Class I, 368 Class II and 24 transition disc candidates. From the Hertzsprung-Russell diagram using stellar evolution models, we estimate an age of 5Myr from several evolved stars and 3Myr from the PMS stars. The IMF was derived from stars with mass larger than 3M, and the slope is slightly steeper (Γ = -1.6±0.2) than the Salpeter/Kroupa IMF. Finally, we estimated the mass accretion rate of PMS stars with an ultraviolet excess. The mean mass accretion rate is about 1.4x10–8M/yr in the mass range of 0.5-2M, whereas intermediate-mass stars ( ≥ 2.5M) exhibit a much higher accretion rate of {dot}M > 10^-6  M_☉   yr^-1.

Abstract Copyright: © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2013)

Journal keyword(s): accretion, accretion discs - circumstellar matter - stars: luminosity function, mass function - open clusters and associations: individual: IC 1848

VizieR on-line data: <Available at CDS (J/MNRAS/438/1451): table3.dat>

Nomenclature: Table 3: [LSK2014] NNNNN (Nos 1-14998).

Status in Simbad:  could be processed

Simbad objects: 39

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