Access to Astronomical Catalogues

← Click to display the menu
J/A+A/447/221       Dust continuum emission from IRAS sources   (Beltran+, 2006)

Search for massive protostar candidates in the southern hemisphere. II. Dust continuum emission. Beltran M.T., Brand J., Cesaroni R., Fontani F., Pezzuto S., Testi L., Molinari S. <Astron. Astrophys., 447, 221-233 (2006)> =2006A&A...447..221B
ADC_Keywords: Infrared sources ; Interstellar medium Keywords: stars: circumstellar matter - stars: formation - ISM: clouds - radio continuum: ISM - infrared: ISM Abstract: In an ongoing effort to identify and study high-mass protostellar candidates we have observed in various tracers a sample of 235 sources selected from the IRAS Point Source Catalog (Cat. II/125), mostly with delta←30°, with the SEST antenna at millimeter wavelengths. The sample contains 142 Low sources and 93 High, which are believed to be in different evolutionary stages. Both sub-samples have been studied in detail by comparing their physical properties and morphologies. Description: The 1.2-mm continuum observations were carried out with the 37-channel bolometer array SIMBA (SEST Imaging Bolometer Array) at the SEST (Swedish-ESO Submillimetre Telescope), on July 16-20, 2002 and July 9-13, 2003. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 64 235 Observed IRAS sources table2.dat 70 667 Offset position, angular diameter, linear diameter, integrated flux density at 1.2mm, mass, and density of the clumps detected towards each IRAS source
See also: II/125 : IRAS catalogue of Point Sources, Version 2.0 (IPAC 1986) J/A+A/432/921 : Massive protostellar candidates (Fontani+, 2005) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 10 A10 --- IRAS IRAS name (HHMMm-DDMM, B1950) 12 A1 --- [HL] H(igh) or L(ow) according to the classification of Palla et al. (1991, Cat. J/A+A/246/249) 14- 15 I2 h RAh Right ascension (J2000) 17- 18 I2 min RAm Right ascension (J2000) 20- 23 F4.1 s RAs Right ascension (J2000) 25 A1 --- DE- Declination sign (J2000) 26- 27 I2 deg DEd Declination (J2000) 29- 30 I2 arcmin DEm Declination (J2000) 32- 33 I2 arcsec DEs Declination (J2000) 35- 38 F4.1 kpc Dnear ?=- Near kinematic distance (1) 39 A1 --- n_Dnear [cfghi] Note (2) 41- 44 F4.1 kpc Dfar ?=- Far kinematic distance (1) 45 A1 --- n_Dfar [cfghi] Note (2) 47- 53 F7.2 10+3solLum Lum ?=- Luminosities calculated by integrating the IRAS flux densities 54 A1 --- n_Lum [cfghi] Note (2) 57- 63 F7.1 solMass Mass ?=- Mass (3) 64 A1 --- n_Mass [cefdghi] Note (2)
Note (1): Kinematic distance estimated from the NH3 or CS line velocity using the rotation curve of Brand & Blitz (1993, Cat. J/A+A/275/67) Note (2): Flags as follows: c = No CS detected towards the IRAS source (Fontani et al., 2005, Cat. J/A+A/432/921) f = Far distance more than 200pc from the galactic plane d = No source detected at millimeter wavelengths e = Millimeter sources located at >90"' from the nominal IRAS point source position g = Dnear<100pc. Luminosity and mass estimated assuming Dfar h = No CS or C17O observed i = Galactocentric distance <2kpc Note (3): Sum of the mass estimated from the 1.2mm continuum for clumps located at <90" from the IRAS position
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 10 A10 --- IRAS IRAS name 11 A1 --- n_IRAS [h] Note on IRAS (1) 13- 14 I2 --- Clump ?=- Clump sequential number 15 A1 --- n_Clump [d] Note on Clump (1) 17- 21 I5 arcsec Dx ?=- Offset along x axis 23- 26 I4 arcsec Dy ?=- Offset along y axis 28- 29 A2 --- l_theta [< ] Limit flag on theta 30- 34 F5.2 arcsec theta ?=- Clump position angle 35 A1 --- n_theta [f] Note on theta (2) 36- 37 A2 --- l_Dist [< ] Limit flag on Dist 38- 42 F5.3 pc Dist ?=- Distance of the clump 43 A1 --- n_Dist [cfg] Note on Dist (1) 46- 50 F5.2 Jy S1.2mm ?=- Flux at 1.2mm 52- 58 F7.1 solMass Mclump ?=- Clump mass (2) 59 A1 --- n_Mclump [cg] Note on Mclump (1) 60- 66 F7.1 10+4cm-3 nH2 ?=- H_2_ volume density of the clump (2) 67 A1 --- n_nH2 [cg] Note on nH2 (1) 69 A1 --- MSX [PDN] Clump associated with MSX emission (3) 70 A1 --- n_MSX [e] Note on MSX (1)
Note (1): Flags as follows: c = No kinematic distance estimate d = No source detected at millimeter wavelengths e = MSX point source within 40" of nominal IRAS position, or diffuse MSX emission f = Unresolved source g = Linear size, mass and density estimated assuming the far kinematic distance h = The clumps listed have been detected in a field offset by 4.7' from the nominal IRAS point source position Note (2): The mass of the clump, Mclump, and the H2 volume density, nH2, are estimated from the 1.2mm continuum for a dust temperature of 30K, and using a gas-to-dust mass ratio of 100. Note (3): MSX emission as follows: P = MSX point source within 40" from the millimeter clump peak emission position D = diffuse MSX emission N = No MSX emission
History: From electronic version of the journal
(End) Patricia Vannier [CDS] 16-Nov-2006
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

catalogue service

© UDS/CNRS

Contact