J/AJ/136/1372 Very low-mass YSOs in NGC 1333 (Oasa+, 2008)
Luminosity and mass functions at the very low mass side in NGC 1333.
Oasa Y., Tamura M., Sunada K., Sugitani K.
<Astron. J., 136, 1372-1387 (2008)>
=2008AJ....136.1372O 2008AJ....136.1372O
ADC_Keywords: Nebulae ; Photometry, infrared ; YSOs
Keywords: infrared: stars - ISM: individual (NGC 1333) - stars: formation -
stars: low-mass, brown dwarfs -
stars: luminosity function, mass function - stars: pre-main sequence
Abstract:
We present the results of a deep near-infrared (NIR) imaging survey
searching for very low mass young stellar objects (YSOs) in the
embedded cluster associated with the Perseus molecular cloud. Our
observations cover an area of ∼5'x5' in the NGC 1333-S region at J-,
H-, and Ks-bands. The 10σ limiting magnitudes exceed 18mag in
all three bands. Based on NIR color-color diagrams, embedded YSO
candidates were identified using NIR excesses.
Description:
JHKs imaging observations of the star-forming core in NGC 1333 were
conducted during the period from 1997 September 22-October 1 using the
facility infrared array camera (OASIS) mounted on the 1.88m telescope
of the Okayama Astronomical Observatory (OAO) in Japan.
The region in common with the OASIS survey was imaged in the
JHKs-bands with the Simultaneous-Color InfraRed Imager for Unbiased
Survey (SIRIUS) on the 2.2m University of Hawaii telescope on Mauna
Kea, Hawaii, on the night of 2000 August 15.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 76 76 NIR sources in the NGC 1333 region
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See also:
J/A+AS/106/165 : Near-IR imaging photometry of NGC 1333 (Aspin+ 1994)
J/AJ/111/1964 : JHK photometry of NGC1333 (Lada+, 1996)
J/AJ/127/1131 : NGC 1333 low-mass stars infrared photometry (Wilking+, 2004)
J/ApJ/575/354 : Young stellar objects in the NGC 1333 (Getman+, 2002)
J/ApJ/655/958 : 90-GHz observations in NGC 1333 (Walsh+, 2007)
J/ApJ/674/336 : Spitzer observations of NGC 1333 (Gutermuth+, 2008)
Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Seq Sequential number, <[OTS2008] NN> in Simbad
4 I1 h RAh Right ascension (J2000)
6- 7 I2 min RAm Right ascension (J2000)
9- 13 F5.2 s RAs Right ascension (J2000)
15 A1 --- DE- Declination sign (J2000)
16- 17 I2 deg DEd Declination (J2000)
19- 20 I2 arcmin DEm Declination (J2000)
22- 26 F5.2 arcsec DEs Declination (J2000)
28- 32 F5.2 mag Jmag J magnitude
33 A1 --- n_Jmag [d] Source saturated in J (1)
35- 38 F4.2 mag e_Jmag ?=0.00 rms uncertainty on Jmag
40- 44 F5.2 mag Hmag H magnitude
45 A1 --- n_Hmag [d] Source saturated in H (1)
47- 50 F4.2 mag e_Hmag ?=0.00 rms uncertainty on Hmag
52- 56 F5.2 mag Kmag Ks magnitude
57 A1 --- n_Kmag [d] Source saturated in Ks (1)
59- 62 F4.2 mag e_Kmag ?=0.00 rms uncertainty on Kmag
64- 68 F5.2 mag J0mag ? Reddening-corrected J magnitude (2)
70 I1 --- Type [1/4] Numerical type (3)
71 A1 --- n_Type [d] Source saturated (1)
73- 75 I3 --- ASR ? ASR number (4)
76 A1 --- n_ASR [e] if sources not resolved in
Aspin et al. 1994A&AS..106..165A 1994A&AS..106..165A
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Note (1): 'd' indicates sources saturated in this survey.
The values are substituted with Aspin et al., 1994A&AS..106..165A 1994A&AS..106..165A
Note (2): For Class II objects, the J luminosity is corrected for the
extinction and translated using the distance modulus.
Note (3): Our source classification flag as follows:
1 = source classified as Class I object candidate
2 = source classified as Class II object candidate
3 = source classified as Class III object and field star candidate
4 = sources lying below the CTTS locus and to the right of reddening lines
Note (4): Sources previously identified in the NIR survey by Aspin et al.,
1994A&AS..106..165A 1994A&AS..106..165A
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 06-Apr-2011