J/PASJ/64/96 Near-infrared survey of bright rimmed clouds (Hayashi+, 2012)
Near-infrared survey of bright rimmed clouds.
Hayashi Y., Itoh Y., Oasa Y.
<Publ. Astron. Soc. Jap., 64, 96 (2012)>
=2012PASJ...64...96H 2012PASJ...64...96H
ADC_Keywords: YSOs ; Molecular clouds ; Photometry, infrared
Keywords: infrared: stars - stars: formation - stars: low-mass, brown dwarfs -
stars: luminosity function, mass function
Abstract:
We conducted wide-field near-infrared imaging observations of 32
bright rimmed clouds (BRCs). Given a detection limit of 17.7mag at
the K-band, we identified 2099 objects as young stellar object
(YSO) candidates that displayed near-infrared excesses. Their masses,
estimated from luminosities, range from 0.006M☉ to 2.7M☉.
The candidates are not uniformly distributed. For 21 BRCs, more than
half of the associated YSO candidates are located inside the cloud. We
found clear evidence of triggered star formation. The number of YSO
candidates is not correlated with the core mass of the molecular
clouds. Instead, the YSO number increases with increasing UV photon
flux from the exciting star illuminating the cloud surface. UV
radiation activates star formation in the BRCs.
Description:
Wide-field near-infrared imaging observations were carried out on 2009
October 15 with the Wide Field Infrared Camera (WFCam) mounted on the
United Kingdom Infrared Telescope (UKIRT).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tables.dat 155 2099 YSO candidates in 31 BRC regions
(Bright Rimmed Clouds; tables E1-E31 of the paper)
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See also:
J/AJ/123/2597 : Hα stars and HH objects near BRCs (Ogura+, 2002)
J/MNRAS/396/964 : T Tauri in and around bright-rimmed clouds (Chauhan+, 2009)
Byte-by-byte Description of file: tables.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- BRC Bright Rimmed Cloud region number
4- 6 I3 --- ID Star number within the region
8- 9 I2 h RAh Right ascension (J2000)
11- 12 I2 min RAm Right ascension (J2000)
14- 18 F5.2 s RAs Right ascension (J2000)
20 A1 --- DE- Declination sign (J2000)
21- 22 I2 deg DEd Declination (J2000)
24- 25 I2 arcmin DEm Declination (J2000)
27- 30 F4.1 arcsec DEs Declination (J2000)
32- 36 F5.2 mag Jmag UKIRT J-band magnitude
38- 41 F4.2 mag e_Jmag rms uncertainty on Jmag
43- 47 F5.2 mag Hmag UKIRT H-band magnitude
49- 52 F4.2 mag e_Hmag rms uncertainty on Hmag
54- 58 F5.2 mag Kmag UKIRT K-band magnitude
60- 63 F4.2 mag e_Kmag rms uncertainty on Kmag
65-155 A91 --- Ident Identification(s) (1)
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Note (1): List for identifications:
[BKP1999] = Belikov et al. (1999, Cat. J/A+AS/134/525)
<Cl* NGC 6611 BKP NNNNN> in Simbad
[BML2009] = Beltran et al. (2009, Cat. J/A+A/504/97)
<[BML2009] NIR NNNNA> in Simbad
[CHS2001] = Carpenter et al. (2001, Cat. J/AJ/121/3160)
[CMB2010] = Choudhury et al. (2010, Cat. J/ApJ/717/1067)
[CPO2009] = Chauhan et al. (2009, Cat. J/MNRAS/396/964)
[GFG2007] = Getman et al. (2007, Cat. J/ApJ/654/316)
[GMD2009] = Guarcello et al. (2009, Cat. J/A+A/496/453)
<Cl* NGC 6611 GMD NNNN> in Simbad
[GMM2009] = Gutermuth et al. (2009, Cat. J/ApJS/184/18)
[HMS1993] = Hillenbrand et al. (1993, Cat. J/AJ/106/1906)
[ISW2008] = Ikeda et al. (2008, Cat. J/AJ/135/2323)
[NMV2001] = Nisini et al. (2001A&A...376..553N 2001A&A...376..553N)
[OJV2009] = Oliveira et al. (2009, Cat. J/MNRAS/392/1034)
[OSP2002] = Ogura et al. (2002, Cat. J/AJ/123/2597)
[R2009] = Roman-Lopes (2009, Cat. MNRAS/398/1368)
[SHB2004] = Sicilia-Aguilar et al. (2004, Cat. J/AJ/128/805)
[W1961] = Walker (1961ApJ...133..438W 1961ApJ...133..438W)
[WFT2009] = Wang et al. (2009, Cat. J/ApJ/696/47)
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 05-Feb-2013