J/ApJ/788/122 IR photometry of YSO candidates toward SNR IC 443 (Su+, 2014)
Molecular environment of the supernova remnant IC 443: discovery of
the molecular shells surrounding the remnant.
Su Y., Fang M., Yang J., Zhou P., Chen Y.
<Astrophys. J., 788, 122 (2014)>
=2014ApJ...788..122S 2014ApJ...788..122S (SIMBAD/NED BibCode)
ADC_Keywords: Supernova remnants ; YSOs ; Photometry, infrared
Keywords: ISM: individual: IC 443, G189.1+3.0 - ISM: molecules -
ISM: supernova remnants
Abstract:
We have carried out 12CO, 13CO, and C18O observations toward the
mixed morphology supernova remnant (SNR) IC 443. The observations
cover a 1.5°x1.5° area and allow us to investigate the overall
molecular environment of the remnant. Some northern and northeastern
partial shell structure of CO gas is around the remnant. One of the
partial shells, about 5' extending beyond the northeastern border of
the remnant's bright radio shell, seems to just confine the faint
radio halo. On the other hand, some faint CO clumps can be discerned
along the eastern boundary of the faint remnant's radio halo.
Connecting the eastern CO clumps, the northeastern partial shell
structures, and the northern CO partial shell, we can see that a half
molecular ring structure appears to surround the remnant. The LSR
velocity of the half-ring structure is in the range of -5 km/s to -2 km/s,
which is consistent with that of the -4 km/s molecular clouds. We
suggest that the half-ring structure of the CO emission at VLSR~-4 km/s
is associated with the SNR. The structures are possibly swept up by
the stellar winds of SNR IC 443's massive progenitor. Based on the
Wide-field Infrared Survey Explorer and the Two Micron All Sky Survey
near-IR database, 62 young stellar object (YSO) candidates are
selected within the radio halo of the remnant. These YSO candidates
concentrated along the boundary of the remnant's bright radio shell
are likely to be triggered by the stellar winds from the massive
progenitor of SNR IC 443.
Description:
The infrared (IR) photometric data used in this work were from the Two
Micron All Sky Survey (2MASS; Skrutskie et al. 2006AJ....131.1163S 2006AJ....131.1163S,
Cat. VII/233) and the survey of the Wide-field Infrared Survey
Explorer (WISE; Wright et al. 2010AJ....140.1868W 2010AJ....140.1868W). The 2MASS survey
provides the near-IR photometry in the JHKS bands with 10σ limiting
magnitudes of ∼15.8, 15.1, and 14.3 mag, respectively. The WISE survey
covered the IC 443 region at the wavelengths of 3.4, 4.6, 12, and 22 um
with spatial resolutions of 6.1", 6.4", 6.5", and 12.0", respectively.
The 10σ limiting magnitudes are estimated to be ∼15.7, 14.7, 10.4,
and 7.1 mag in the WISE [3.4], [4.6], [12], and [22] bands, respectively.
Objects:
--------------------------------------------------------
RA (ICRS) DE Designation(s)
--------------------------------------------------------
06 18 02.7 +22 39 36 IC 443 = SNR G189.0+03.0
--------------------------------------------------------
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table3.dat 110 98 The Infrared Photometric Magnitudes of the YSO
Candidates toward SNR IC 443
--------------------------------------------------------------------------------
See also:
VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)
II/311 : WISE All-Sky Data Release (Cutri+ 2012)
II/327 : AKARI Far-Infrared Surveyor YSO catalog (Toth+, 2014)
J/A+A/279/541 : Sub-mm observations of SNR IC 443 (van Dishoeck+ 1993)
J/AJ/130/1145 : YSO near-infrared properties (Doppmann+, 2005)
Byte-by-byte Description of file: table3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 I2 --- Seq [1/98] YSO candidate running number
4- 22 A19 --- WISE WISE identifier (JHHMMSS.ss+DDMMSS.s)
24- 28 F5.2 mag Jmag ? 2MASS J band magnitude (1.25 mum)
30- 33 F4.2 mag e_Jmag ? Uncertainty in Jmag
35- 39 F5.2 mag Hmag ? 2MASS H band magnitude (1.65 mum)
41- 44 F4.2 mag e_Hmag ? Uncertainty in Hmag
46- 50 F5.2 mag Ksmag ? 2MASS Ks band magnitude (2.17 mum)
52- 55 F4.2 mag e_Ksmag ? Uncertainty in Ksmag
57- 61 F5.2 mag W1mag WISE W1 band magnitude (3.4 mum)
63- 66 F4.2 mag e_W1mag Uncertainty in W1mag
68- 72 F5.2 mag W2mag WISE W2 band magnitude (4.6 mum)
74- 77 F4.2 mag e_W2mag Uncertainty in W2mag
79- 83 F5.2 mag W3mag WISE W3 band magnitude (12 mum)
85- 88 F4.2 mag e_W3mag ? Uncertainty in W3mag
90- 93 F4.2 mag W4mag WISE W4 band magnitude (22 mum)
95- 98 F4.2 mag e_W4mag Uncertainty in W4mag
100-104 F5.2 mag Av ? Absorption in V band
106-110 F5.2 --- alpha ? IR spectral slope α
--------------------------------------------------------------------------------
History:
From electronic version of the journal
(End) Prepared by Tiphaine Pouvreau [CDS] 13-Jul-2017