J/A+A/567/A108 Rosette globulettes and shells in the IR (Makela+, 2014)
Rosette globulettes and shells in the infrared.
Makela M.M., Haikala L.K., Gahm G.F.
<Astron. Astrophys. 567, A108 (2014)>
=2014A&A...567A.108M 2014A&A...567A.108M
ADC_Keywords: Globules ; Stars, pre-main sequence ; Photometry, infrared
Keywords: stars: formation - stars: pre-main-sequence - stars: protostars -
dust, extinction - HII regions -
ISM: individual objects: Rosette Nebula (except planetary nebulae)
Abstract:
The compressed molecular shells around the central clusters in HII
regions break up into morphologically distinct fragments due to the UV
light from the central OB stars. Tiny, dense, sub-solar mass clumps
called globulettes are one of such distinct features.
The objective of this study is to study the globulettes and the shells
in the Rosette Nebula. Their extinction, surface brightness in the
cores and rims, and density have been estimated through NIR
observations. The star-formation activity has also been studied.
The NIR JHKs photometry is used in creating visual extinction maps and
studying the density of individual globulettes.
Description:
The JHKs photometry of stars in four overlapping 5'x5' fields in the
northwestern region of the Rosette Nebula and in one 5'x5' field 10'
east of the overlapping fields are presented. The observations were
carried out with the SOFI instrument on NTT. A reddening-free
reference region, OFF, (5'x5') has also been observed.
The magnitudes have been converted to the 2MASS system and the
positional accuracy is better than 0.6". The smallest errors have been
rounded up to 0.01mag.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table5.dat 99 1777 Stellar JHKs photometry in the ON region
table6.dat 99 389 Stellar JHKs photometry in the OFF region
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See also:
J/ApJ/428/693 : Rosette Nebula and Maddalena Cloud structures (Williams+ 1994)
J/A+A/384/890 : NGC 2244 X-ray stars BVRIHalpha photometry (Berghoefer+, 2002)
J/ApJ/675/464 : Chandra observations of NGC 2244 (Wang+, 2008)
J/ApJ/696/47 : Chandra study of Rosette star-forming complex. II. (Wang+, 2009
J/ApJ/716/474 : The Rosette star-forming complex. III. (Wang+, 2010)
J/A+A/557/A29 : Young stellar clusters in the Rosette (Cambresy+, 2013)
Byte-by-byte Description of file: table5.dat table6.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- Seq [1/1777] Sequential star number within the region
6- 24 A19 --- Name Stellar identification, JHHMMSS.ss+DDMMSS.s
26- 27 I2 h RAh Right ascension (J2000)
29- 30 I2 min RAm Right ascension (J2000)
32- 36 F5.2 s RAs Right ascension (J2000)
38 A1 --- DE- Declination sign (J2000)
39- 40 I2 deg DEd Declination (J2000)
42- 43 I2 arcmin DEm Declination (J2000)
45- 48 F4.1 arcsec DEs Declination (J2000)
50- 54 F5.2 mag Jmag [12.3/20.7] SOFI J magnitude
56- 59 F4.2 mag e_Jmag [0.01/0.13] Formal error on Jmag
61- 65 F5.2 mag Hmag [12.1/19.8] SOFI H magnitude
67- 70 F4.2 mag e_Hmag [0.01/0.14] Formal error on Hmag
72- 76 F5.2 mag Ksmag [12.0/19.6] SOFI Ks magnitude
78- 81 F4.2 mag e_Ksmag [0.01/0.14] Formal error on Ksmag
83- 87 F5.2 mag J-H J-H colour index
89- 93 F5.2 mag H-K H-Ks colour index
95- 99 A5 --- 2M [2MASS ] Star in the 2MASS catalog (II/246)
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Acknowledgements:
Minja M. Makela, minja.makela(at)helsinki.fi
(End) Minja Makela [Univ. of Helsinki], Patricia Vannier [CDS] 23-May-2014