J/ApJ/629/288 Infrared sources near AFGL 5142 (Chen+, 2005)
Near-infrared imaging of the star formation region AFGL 5142.
Chen Y., Yao Y., Yang J., Zeng Q., Sato S.
<Astrophys. J., 629, 288-298 (2005)>
=2005ApJ...629..288C 2005ApJ...629..288C
ADC_Keywords: Associations, stellar ; Infrared sources
Keywords: ISM: individual (AFGL 5142) - ISM: jets and outflows -
ISM: lines and bands - open clusters and associations: general
Abstract:
Near-infrared JHK' and H2 v=1-0 S(1) imaging observations of the
star-forming region AFGL 5142 are presented. A cluster of young stars
is confirmed to be embedded in the dense molecular cloud core. Many
point sources are newly detected. The cluster's K'-magnitude
distribution and [H-K'] color peak have brighter and redder magnitudes
than those outside the cluster. Many of the cluster sources exhibit
infrared excesses typical of T Tauri stars, Herbig Ae/Be stars, and
protostars. The observations also reveal new H2 line emission around
the cluster, exhibiting several jets, filaments, and a faint
elliptical structure. The jets are associated with the CO outflows in
the region. The powering sources of the jets, the CO outflows, and the
small faint elliptical structure are identified and analyzed
individually. The strong H2 jets and faint diffuse emission further
confirm that the cluster is in an early stage of evolution.
Description:
Under photometric conditions, images of AFGL 5142 were taken with
Okayama Astrophysical System for Infrared Imaging and Spectroscopy
at the 1.88m telescope at Okayama Astronomical Observatory in Japan in
1997 October, 1999 November, and 2000 November.
Objects:
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RA (2000) DE Designation(s)
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05 30 45.9 +33 47 56 AFGL 5142 = RAFGL 5142
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 38 164 Near-Infrared Photometry of AFGL 5142
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Seq Sequential number, [CYY2005] NIRS NNN in Simbad
4 A1 --- n_Seq [cd] Note on Seq (1)
6- 12 F7.2 arcsec DRA Offset in right ascension (2)
13- 18 F6.1 arcsec DDE Offset in declination (2)
20- 24 F5.2 mag K'mag K' magnitude
26- 30 F5.2 mag [H-K'] ?=- [H-K'] colour index
32- 35 F4.2 mag [J-H] ?=- [J-H] colour index
37- 38 I2 --- [HTT95] ?=- Number given to the point source in Table 2
of Hunter et al., (1995A&A...302..249H 1995A&A...302..249H),
[HTT95] IR NN in Simbad
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Note (1):
c = IRS 1 (Hunter et al., 1995A&A...302..249H 1995A&A...302..249H), [HTT95] IRS 1
d = IRS 2 (Hunter et al., 1995A&A...302..249H 1995A&A...302..249H), [HTT95] IRS 2
Note (2): DRA and DDE offsets from NIRS 30 at
05:30:46.04+33:47:54.7 (J2000.0) in POSS.
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History:
* 25-Aug-2006: From electronic version of the journal
* 28-Sep-2006: For [CYY2005] NIRS 1, [HTT95] 55 corrected into [HTT95] 19
([HTT95] IRS 1 = [HTT95] 19 in Simbad)
(End) Patricia Vannier [CDS] 25-Aug-2006