J/AJ/162/140 The SOS. VII. UBVI photometry of open cluster IC 1590 (Kim+, 2021)
The Sejong Open cluster Survey (SOS).
VII. A photometric study of the young open cluster IC 1590.
Kim S., Lim B., Bessell M.S., Kim J.S., Sung H.
<Astron. J., 162, 140-140 (2021)>
=2021AJ....162..140K 2021AJ....162..140K (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, open; H II regions; Star Forming Region;
Stars, pre-main sequence; Photometry, UBVRI; Colors
Keywords: Open star clusters; Star formation; Star-forming regions
Pre-main sequence stars; Initial mass function
Abstract:
Young open clusters are ideal laboratories to understand the star
formation process. We present deep UBVI and Hα photometry for
the young open cluster IC1590 in the center of the HII region NGC281.
Early-type members are selected from UBV photometric diagrams, and
low-mass pre-main-sequence (PMS) members are identified by using
Hα photometry. In addition, the published X-ray source list and
Gaia astrometric data are also used to isolate probable members. A
total of 408 stars are selected as members. The mean reddening
obtained from early-type members is <E(B-V)≥0.40±0.06(s.d.). We
confirm the abnormal extinction law for the intracluster medium. The
distance modulus to the cluster determined from the zero-age
main-sequence fitting method is 12.3±0.2mag (d=2.88±0.28kpc),
which is consistent with the distance d=2.70-0.20+0.24kpc from the
recent Gaia parallaxes. We also estimate the ages and masses of
individual members by means of stellar evolutionary models. The mode
of the age of PMS stars is about 0.8Myr. The initial mass function of
IC1590 is derived. It appears to be a steeper shape
(Γ=-1.49±0.14) than that of the Salpeter/Kroupa initial mass
function for the high-mass regime (m>1M☉). The signature of mass
segregation is detected from the difference in the slopes of the
initial mass functions for the inner (r<2.5') and outer regions of
this cluster. We finally discuss the star formation history in NGC281.
Description:
The UBVI CCD observations of the young open cluster IC1590 were
conducted on 2005 August 9 using the AZT-22 1.5m telescope with the
SITe 2000x00 CCD (0.66"/pixel) at the Maidanak Astronomical
Observatory in Uzbekistan. The typical seeing was ∼1".
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table2.dat 108 1593 Photometric data for IC 1590
--------------------------------------------------------------------------------
See also:
III/274 : Galactic O-Star Spectroscopic Survey (GOSSS) (Sota+, 2014)
J/ApJS/190/1 : A survey of stellar families (Raghavan+, 2010)
J/AJ/143/41 : UBVIc CCD photometry of star clusters Tr14 & Tr16 (Hur+, 2012)
J/AJ/144/192 : Spitzer survey of Orion A & B. I. YSO catalog (Megeath+, 2012)
J/A+A/537/A146 : Stellar models rotation. 0.8<M<120, Z=0.014 (Ekstrom+, 2012)
J/A+A/538/A74 : Massive binaries in Cepheus OB2/3 region (Peter+, 2012)
J/A+A/539/A74 : NGC1893 Chandra X-ray catalog (Caramazza+, 2012)
J/PASJ/64/107 : Multiwavelength study of NGC 281 complex (Sharma+, 2012)
J/other/Sci/337.444 : RV curves of Galactic massive O stars (Sana+, 2012)
J/MNRAS/438/1451 : UBVIHα photometry of IC 1848 (Lim+, 2014)
J/MNRAS/443/454 : UBVIHα photometry in NGC 1893 (Lim+, 2014)
J/AJ/149/127 : The SOS project. IV. NGC 1624 and NGC 1931 (Lim+, 2015)
J/MNRAS/446/3797 : Westerlund 2 UBVIc photometry (Hur+, 2015)
J/A+A/594/A82 : XMM sources in IC 1805 (Rauw+, 2016)
J/A+A/600/A20 : Lupus YSOs X-shooter spectroscopy (Alcala+, 2017)
J/ApJS/230/3 : Optical & Spitzer photometry in IC 1805 (Sung+, 2017)
J/MNRAS/473/849 : Mass segregation in Galactic stellar clusters (Dib+, 2018)
J/MNRAS/477/1993 : NGC 1893 stars LSR velocities (Lim+, 2018)
J/ApJS/244/28 : The 3rd MSFRs Omnibus X-ray Catalog (MOXC3) (Townsley+, 2019)
J/MNRAS/490/2521 : Fractal Statistics in Young Star Clusters (Hetem+, 2019)
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 I4 --- ID [1/1593] Internal index number
6 I1 h RAh [00] Hour of Right Ascension (J2000)
8- 9 I2 min RAm [52/53] Minute of Right Ascension (J2000)
11- 14 F4.1 s RAs Second of Right Ascension (J2000)
16 A1 --- DE- [+] Sign of the Declination (J2000)
17- 18 I2 deg DEd [56] Degree of Declination (J2000)
20- 21 I2 arcmin DEm [33/43] Arcminute of Declination (J2000)
23- 26 F4.1 arcsec DEs Arcsecond of Declination (J2000)
28- 32 F5.2 mag Imag [8.98/20.2]? Apparent I band magnitude
34- 38 F5.2 mag Vmag [8.34/21.9]? Apparent V band magnitude
40- 43 F4.2 mag V-I [0.15/3.6]? The (V-I) color
45- 49 F5.2 mag B-V [-2.48/2.37]? The (B-V) color
51- 55 F5.2 mag U-B [-0.86/2.37]? The (U-B) color
57- 61 F5.2 mag Ha [-2.03/0.77]? Hα index (1)
63- 66 F4.2 mag e_Imag [0.01/0.6]? Uncertainty in Imag
68- 72 F5.2 mag e_Vmag [0.01/10]? Uncertainty in Vmag
74- 77 F4.2 mag e_V-I [0.01/0.6]? Uncertainty in V-I
79- 83 F5.2 mag e_B-V [0.01/10]? Uncertainty in B-V
85- 89 F5.2 mag e_U-B [0.01/10]? Uncertainty in U-B
91- 94 F4.2 mag e_Ha [0.01/0.3]? Uncertainty in Ha
96 I1 --- NImag [0/5] Number of observations in Imag
98 I1 --- NVmag [0/4] Number of observations in Vmag
100 I1 --- NV-I [0/4] Number of observations in V-I
102-102 I1 --- NB-V [0/4] Number of observations in B-V
104 I1 --- NU-B [0/4] Number of observations in U-B
106 I1 --- NHa [0/2] Number of observations in Ha
108 A1 --- Em? Hα emission detected? (2)
--------------------------------------------------------------------------------
Note (1): Where Ha=mHα-(V+I)/2 defined by
Sung & Bessell, 2000PASJ...17..244S 2000PASJ...17..244S.
Note (2): Flag as follows:
H = An Hα emission star (39 occurrences)
h = An Hα emission candidate (15 occurrences)
--------------------------------------------------------------------------------
History:
From electronic version of the journal
References:
Lim et al. Paper II : 2014MNRAS.438.1451L 2014MNRAS.438.1451L cat. J/MNRAS/438/1451
Lim et al. Paper III : 2014MNRAS.443..454L 2014MNRAS.443..454L cat. J/MNRAS/443/454
Lim et al. Paper IV : 2015AJ....149..127L 2015AJ....149..127L cat. J/AJ/149/127
Sung et al. Paper VI : 2019MNRAS.486.3473S 2019MNRAS.486.3473S
(End) Prepared by [AAS], Coralie Fix [CDS], 13-Dec-2021