J/ApJ/797/40 YSO candidates in the IR dust bubble N6 (Yuan+, 2014)
Expanding shell and star formation in the infrared dust bubble N6.
Yuan J.-H., Wu Y., Li J.Z., Liu H.
<Astrophys. J., 797, 40 (2014)>
=2014ApJ...797...40Y 2014ApJ...797...40Y (SIMBAD/NED BibCode)
ADC_Keywords: YSOs ; Photometry, infrared ; Stars, masses ;
Effective temperatures
Keywords: H II regions - ISM: bubbles - ISM: clouds - radio lines: ISM -
stars: early-type - stars: formation
Abstract:
We have carried out a multiwavelength study of the infrared dust
bubble N6 to extensively investigate the molecular environs and
star-forming activities therein.
99 young stellar objects (YSOs) have been identified based on their
infrared colors. A group of YSOs reside inside the ring, indicating
active star formation in N6. Although no confirmative features of
triggered star formation are detected, the bubble and the enclosed HII
region have profoundly reconstructed the natal cloud and altered the
dynamics therein.
Description:
Observations of the infrared dust bubble N6 in J=1-0 transitions of
12CO (115.272 GHz) and 13CO (110.201 GHz) were carried out with the
Purple Mountain Observatory (PMO) 13.7m telescope on 2012 June 29. The
on-the-fly mode was used to map a 21'x25' region with a reference
point at RA(J2000)=18 14 39.3, DE(J2000)=-18 24 42.9. The half-power
beam width of the PMO 13.7 m telescope was about 52" at both 115GHz
and 110GHz. The pointing and tracking accuracies were determined to
be better than 5" by scanning planets (e.g., Jupiter and Venus).
Public survey data at wavelengths ranging from infrared to centimeter
were retrieved from GLIMPSE (Cat. II/293), MIPSGAL (Carey et al.,
2009PASP..121...76C 2009PASP..121...76C), and MAGPIS (Cat. J/AJ/131/2525) surveys.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table5.dat 136 99 Magnitudes of YSO candidates
table6.dat 95 87 Model parameters of YSO candidates
table7.dat 92 8 Exciting Star Candidates
--------------------------------------------------------------------------------
See also:
II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
II/293 : GLIMPSE Source Catalog (I + II + 3D) (IPAC 2008)
VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)
VIII/58 : A Survey of Radio H II Regions in the Northern Sky
(Lockman+ 1989)
J/A+A/308/573 : Ammonia on YSOs IRAS sources (Molinari+ 1996)
J/ApJ/649/759 : Bubbles in the galactic disk (Churchwell+, 2006)
J/ApJ/670/428 : Bubbles in the galactic disk. II. (Churchwell+, 2007)
J/ApJS/184/18 : Spitzer survey of young stellar clusters (Gutermuth+, 2009)
J/ApJ/674/336 : Spitzer observations of NGC 1333 (Gutermuth+, 2008)
J/AJ/131/2525 : MAGPIS 20cm survey (Helfand+, 2006)
J/ApJ/582/756 : Velocities of HII regions (Kolpak+, 2003)
J/A+A/457/637 : Synthetic photometry of Galactic O stars (Martins+, 2006)
J/A+A/505/405 : A catalogue of Spitzer dark clouds (Peretto+, 2009)
J/ApJ/696/1278 : M17 extended star-forming environment (Povich+, 2009)
J/ApJ/699/1153 : Kinematic distances to GRS mol. clouds (Roman-Duval+, 2009)
J/ApJ/754/62 : HRDS III. HII region kinematic distances (Anderson+, 2012)
J/MNRAS/424/2442 : Catalog of bubbles from Milky Way Project (Simpson+, 2012)
J/ApJ/783/130 : Parallaxes of high mass star forming regions (Reid+, 2014)
J/A+A/566/A122 : JHK and IRAC photometry of Sh2-90 YSOs (Samal+, 2014)
Byte-by-byte Description of file: table5.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 I2 --- Seq [1/99] Sequential number
4- 10 A7 --- --- [SSTGLMC]
12- 28 A17 --- SSTGLMC GLIMPSE designation
( in SIMBAD)
30- 37 F8.4 deg RAdeg Right Ascension (J2000)
39- 46 F8.4 deg DEdeg Declination (J2000)
48- 52 F5.2 mag Jmag [11.82/15.56]? 2MASS J band magnitude
54- 57 F4.2 mag e_Jmag [0.02/0.08]? Uncertainty in Jmag
59- 63 F5.2 mag Hmag [10.2/14.29]? 2MASS H band magnitude
65- 68 F4.2 mag e_Hmag [0.02/0.09]? Uncertainty in Hmag
70- 74 F5.2 mag Ksmag [8.77/13.66]? 2MASS Ks band magnitude
76- 79 F4.2 mag e_Ksmag [0.02/0.09]? Uncertainty in Ksmag
81- 85 F5.2 mag 3.6mag [7.34/13.91]? Spitzer/IRAC 3.6um band magnitude
87- 90 F4.2 mag e_3.6mag [0.03/0.19]? Uncertainty in 3.6mag
92- 96 F5.2 mag 4.5mag [6.51/13.13]? Spitzer/IRAC 4.5um band magnitude
98-101 F4.2 mag e_4.5mag [0.04/0.19]? Uncertainty in 4.5mag
103-107 F5.2 mag 5.8mag [5.44/11.83]? Spitzer/IRAC 5.8um band magnitude
109-112 F4.2 mag e_5.8mag [0.03/0.2]? Uncertainty in 5.8mag
114-118 F5.2 mag 8.0mag [4.63/11.28]? Spitzer/IRAC 8.0um band magnitude
120-123 F4.2 mag e_8.0mag [0.02/0.2]? Uncertainty in 8.0mag
125-128 F4.2 mag 24mag [1.07/8.34]? Spitzer/MIPS 24um band magnitude
130-133 F4.2 mag e_24mag [0.01/0.13]? Uncertainty in 24mag
135-136 A2 --- Class Class (I, II, and "transition disk" TD)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table6.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 I2 --- Seq Sequential number
4- 10 A7 --- --- [SSTGLMC]
12- 28 A17 --- SSTGLMC GLIMPSE designation
( in SIMBAD)
30- 34 F5.2 Msun Mstar [0.92/16.03]? Stellar mass
36- 39 F4.2 Msun e_Mstar [0.01/5.19]? Uncertainty in Mstar
41- 44 F4.2 [K] logT [3.62/4.51]? Effective temperature
46- 49 F4.2 [K] e_logT [0.01/0.3]? Uncertainty in logT
51- 54 F4.2 [Lsun] logL [0.93/4.4]? Total star luminosity
56- 59 F4.2 [Lsun] e_logL [0.01/0.73]? Uncertainty in logL
61- 65 F5.2 [Msun/yr] Mdot.E [-9/-2.52]?=9.0 Envelope accretion rate
67- 70 F4.2 [Msun/yr] e_Mdot.E [0.01/2.84]? Uncertainty in Mdot.E
72- 76 F5.2 [Msun] logMd [-8.04/-0.49]? Disk mass
78- 81 F4.2 [Msun] e_logMd [0.01/1.99]? Uncertainty in logMd
83- 86 F4.2 [yr] logAge [3.42/6.78]? Stellar age
88- 91 F4.2 [yr] e_logAge [0.01/1.37]? Uncertainty in logAge
93- 95 A3 --- Stage YSO evolutionary stage (0/I, II, III)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table7.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 I2 --- Seq Sequential number
4- 10 A7 --- --- [SSTGLMC]
12- 28 A17 --- SSTGLMC GLIMPSE designation
( in SIMBAD)
30- 34 F5.2 mag Jmag [10.62/15.18] 2MASS J band magnitude
36- 40 F5.2 mag Hmag [9.77/12.64] 2MASS H band magnitude
42- 46 F5.2 mag Ksmag [9.31/11.31] 2MASS Ks band magnitude
48- 52 F5.2 mag AV [7.01/24.77] Interstellar extinction
54- 58 F5.2 mag JMAG [-4.96/-3.46] Absolute J band magnitude
60- 64 F5.2 mag HMAG [-4.85/-3.35] Absolute H band magnitude
66- 70 F5.2 mag KsMAG [-4.62/-3.12] Absolute Ks band magnitude
72- 76 F5.2 mag (J-H)0 [-0.11/-0.11] Intrinsic (J-H)0color
78- 82 F5.2 mag (H-Ks)0 [-0.25/-0.13] Intrinsic (H-Ks)0 color
84- 92 A9 --- SpType Spectral type
--------------------------------------------------------------------------------
History:
From electronic version of the journal
(End) Marianne Brouty [CDS] 29-Dec-2016