Access to Astronomical Catalogues

← Click to display the menu
J/ApJ/669/446    Observations of SiO masers        (Nakashima+, 2007)

Correlation between infrared colors and intensity ratios of SiO maser lines. Nakashima J.-I., Deguchi S. <Astrophys. J., 669, 446-458 (2007)> =2007ApJ...669..446N
ADC_Keywords: Infrared sources ; Masers ; Stars, late-type ; Photometry, infrared Keywords: masers - stars: AGB and post-AGB - stars: late-type - stars: mass loss - stars: statistics Abstract: We present the results of SiO millimeter line observations of a sample of known SiO maser sources covering a wide dust temperature range. A cold part of the sample was selected from the SiO maser sources found in our recent SiO maser survey of cold dusty objects. The aim of the present research is to investigate the causes of the correlation between infrared colors and SiO maser intensity ratios among different transition lines. In particular, the correlation between infrared colors and SiO maser intensity ratio among the J=1-0 v=1, 2, and 3 lines are our main concern in this paper. We observed in total 75 SiO maser sources with the Nobeyama 45m telescope quasi-simultaneously in the SiO J=1-0 v=0, 1, 2, 3, 4 and J=2-1 v=1, 2 lines. We also observed the sample in the 29SiO J=1-0 v=0 and J=2-1 v=0 lines, 30SiO J=1-0 v=0 line, and the H2O 61,6-52,3 line. Description: SiO line observations with the Nobeyama 45m telescope were made in two separated periods: 2004 May 11-19 and 2006 February 15-19. In the first period we observed, in total, 38 objects with the cooled SIS-mixer receivers, S40 and S100. The frequency coverage of S40 and S100 was roughly 500MHz. In the second period we observed, in total, 53 objects with the HEMT receiver H40 with a frequency coverage of roughly 2.0GHz. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 63 75 List of the Observing Targets table3.dat 80 550 Results of line observations (for the 75 targets plus W51)
See also: II/125 : IRAS catalogue of Point Sources, Version 2.0 (IPAC 1986) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 10 A10 --- IRAS IRAS name (HHMMm+DDMM) 12- 15 F4.1 mag Jmag 2MASS J magnitude 17- 20 F4.1 mag Hmag 2MASS H magnitude 22- 25 F4.1 mag Kmag 2MASS K magnitude 27- 32 F6.1 Jy F12um IRAS flux density at 12um 34- 39 F6.1 Jy F25um IRAS flux density at 25um 41- 45 F5.1 Jy Fa ?=- MSX flux density in A band (8.28um) 47- 52 F6.1 Jy Fc ?=- MSX flux in density in C band (12.13um) 54- 58 F5.1 Jy Fe ?=- MSX flux in density in E band (21.3um) 60- 63 F4.2 kpc Dist ?=- Luminosity distances to the target (1)
Note (1): These luminosity distances were calculated from bolometric fluxes obtained by integrating infrared fluxes given in Table 1 under the assumption of 8000L, which is a typical absolute luminosity of stellar SiO maser sources (e.g., Nakashima et al., 2000PASJ...52..275N)
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 10 A10 --- IRAS IRAS name (HHMMm+DDMM) 12- 20 A9 --- OName Other name 22- 39 A18 --- Trans Observed transition 41- 45 F5.1 km/s VLSR ? Local standard of rest radial velocity 47- 52 F6.2 K TPeak ? Peak intensity 54 A1 --- l_S Limit flag on S 55- 61 F7.2 S Velocity-integrated intensity 63- 67 F5.3 K rms The rms noise level 69- 80 A12 --- Obs.Date Date of the observation (YYYY/MM/DD.d)
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 16-Jan-2010
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