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J/A+A/453/911   VLA and IR observations of the S235A-B region     (Felli+, 2006)

New signposts of massive star formation in the S235A-B region. Felli M., Massi F., Robberto M., Cesaroni R. <Astron. Astrophys., 453, 911-922 (2006)> =2006A&A...453..911F
ADC_Keywords: H II regions ; Radio sources ; Infrared sources Keywords: stars: formation - ISM: individual objects: S235A-B - ISM: jets and outflows - radio continuum: ISM - masers Abstract: We report on new aspects of the star-forming region S235AB revealed through high-resolution observations at radio and mid-infrared wavelengths. Using the Very Large Array, we carried out sensitive observations of S235AB in the cm continuum (6, 3.6, 1.3, and 0.7) and in the 22GHz water maser line. These were complemented with Spitzer Space Telescope Infrared Array Camera archive data to clarify the correspondence between radio and IR sources. We made also use of newly presented data from the Medicina water maser patrol, started in 1987, to study the variability of the water masers found in the region. Description: The observations carried out with the VLA of the National Radio Astronomy Observatory (NRAO) were made with the VLA in the C configuration on February 26 and on March 7, 2004. The single-dish Medicina radio telescope (HPBW 1.9') observations are part of a monitoring project of a large sample of water masers. Spitzer-IRAC observations of a large area around the S235A-B region in the four wavelengths (3.6, 4.5, 5.8, and 8µm) were extracted from the Spitzer public archive. The observations are part of the GTO program 201 "The Role of Photodissociation Regions in High Mass Star Formation" (Principal Investigator G. Fazio). File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 66 15 MIR fluxes for the Spitzer-IRAC sources towards the mm core
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 2 I2 --- Seq Sequential number, [FMR2006b] IR NN in Simbad 3 A1 --- n_Seq [a] N-E of a close by source only visible in the 5.8um band 5- 14 A10 --- OName Other name 16- 17 I2 h RAh Right ascension (J2000) 19- 20 I2 min RAm Right ascension (J2000) 22- 25 F4.1 s RAs Right ascension (J2000) 27 A1 --- DE- Declination sign (J2000) 28- 29 I2 deg DEd Declination (J2000) 31- 32 I2 arcmin DEm Declination (J2000) 34- 35 I2 arcsec DEs Declination (J2000) 37 A1 --- l_F3.6um Limit flag on F3.6um 38- 41 F4.1 mJy F3.6um Flux density at 3.6um 43- 45 F3.1 mJy e_F3.6um ? rms uncertainty on F3.6um 47- 50 F4.1 mJy F4.5um Flux density at 4.5um 52- 54 F3.1 mJy e_F4.5um rms uncertainty on F4.5um 56 A1 --- l_F5.8um Limit flag on F5.8um 57- 58 I2 mJy F5.8um Flux density at 5.8um 60 I1 mJy e_F5.8um ? rms uncertainty on F5.8um 62 A1 --- l_F8.0um Limit flag on F8.0um 63- 64 I2 mJy F8.0um Flux density at 8.0um 66 I1 mJy e_F8.0um ? rms uncertainty on F8.0um
Table 3: Radio continuum fluxes. Upper limits are 3sigma noise levels. -------------------------------------------------------------------------------- Source Position Flux density (in mJy) -------------------------------------------------------------------------------- RA (J2000) DE S0.7cm S1.3cm S3.6cm S6cm -------------------------------------------------------------------------------- S235A 05 40 52.70 35 42 21 114.±3. a 172.±1 248.±2 257.±7 VLA-1 05 40 53.60 35 41 43 0.59±0.08 0.44±0.03 0.39±0.08 <0.27 VLA-2 05 40 52.40 35 41 30 0.48±0.08 0.47±0.03 <0.24 <0.27 -------------------------------------------------------------------------------- Note: a: Corrected for primary beam attenuation. Table 45: Water masers: fluxes, positions and line luminosities -------------------------------------------------------------------------------- Name RA (J2000) DE L(H2O) ΔVlsr Vlsr Snu -------------------------------------------------------------------------------- H2O/1 05 40 53.27 +35 41 50.0 3.1 9 to -1 7 1.20 3 0.50 H2O/2 05 40 53.63 +35 41 43.0 3.3 -17 to -30 -18 0.16 -25 0.52 -29 1.66 H2O/3 05 40 53.38 +35 41 48.6 4.1 -55 to -71 -58 0.37 -62 0.23 -64 0.22 -68 1.44 History: From electronic version of the journal
(End) Patricia Vannier [CDS] 16-Jan-2007
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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