J/other/NewA/9.509 IRAS observations of Be stars (Zhang+, 2004)
A new approach to IRAS observations of Be stars. Zhang P., Chen P.S., He J.H. <New Astronomy, 9, 509-524 (2004)> =2004NewA....9..509Z
ADC_Keywords: Stars, Be ; Infrared sources Keywords: Stars: emission-line, Be - Infrared: stars Abstract: The IRAS associations for 193 Be stars are identified in this paper. From the infrared colors, the IRAS low-resolution spectra (LRS) and the spectral types, some physical properties and environment of the samples are discussed. It can be concluded that not only free-free emission or free-bound emission from the circumstellar ionized gas can be responsible for the large IR excesses of Be stars as suggested previously, but also, for some Be stars, thermal radiation from the circumstellar dust and/or nebula around the star can produce large IR excess as well. It is also found that the far IR excess of Be stars increases. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 154 193 IRAS associations of Be stars
See also: III/67 : Catalogue of Be stars (Jaschek+, 1982) II/125 : IRAS catalogue of Point Sources, Version 2.0 (IPAC 1986) III/197 : IRAS Low Resolution Spectra (IRAS team, 1987) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 4 I4 --- [JE82] Star number (from Cat. III/67 recno) 6- 19 A14 --- SpType MK spectral type from Cat. III/67 21- 32 A12 --- Name Common name 33- 42 A10 --- IRAS IRAS designation 44- 45 I2 h RAh Right ascension (B1950.0) 47- 48 I2 min RAm Right ascension (B1950.0) 50- 54 F5.2 s RAs Right ascension (B1950.0) 56 A1 --- DE- Declination sign (B1950.0) 57- 58 I2 deg DEd Declination (B1950.0) 60- 61 I2 arcmin DEm Declination (B1950.0) 63- 66 F4.1 arcsec DEs Declination (B1950.0) 68- 72 A5 --- LRS LRS classification (1) 74- 78 F5.2 mag Vmag V magnitude from Cat. III/67 80- 86 F7.3 Jy F12um ? IRAS flux at 12µm 88- 94 F7.3 Jy F25um ? IRAS flux at 25µm 96-103 F8.3 Jy F60um ? IRAS flux at 60µm 105-154 A50 --- Note Extended source name from IRAS PSC (II/125) and/or dust feature from IRAS LRS (III/197)
Note (1): LRS classification from Kwok et al., 1997, Cat. J/ApJS/112/557 or from the LRS Atlas (1986, Cat. III/197) in the bracket.
History: Prepared via OCR at CDS.
(End) Patricia Vannier [CDS] 01-Nov-2005
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