J/A+AS/146/437 IR spectra of oxygen-rich evolved stars (Speck+, 2000)
Dust features in the 10-µm infrared spectra of oxygen-rich evolved stars.
Speck A.K., Barlow M.J., Sylvester R.J., Hofmeister A.M.
<Astron. Astrophys. Suppl. Ser. 146, 437 (2000)>
=2000A&AS..146..437S 2000A&AS..146..437S
ADC_Keywords: Stars, supergiant ; Spectra, infrared
Keywords: (stars:) circumstellar matter - stars: mass-loss -
stars: AGB and post-AGB - (stars:) supergiants - infrared: stars -
stars: variables: other
Abstract:
We have analyzed the 8-13.5µm UKIRT CGS3 spectra of 142 M-type
stars including 80 oxygen-rich AGB stars and 62 red supergiants, with
a view to understanding the differences and similarities between the
dust features of these stars. We have classified the spectra into
groups according to the observed appearance of the infrared features.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 135 73 AGB stars observed
table2.dat 135 41 Supergiant stars in the sample
table3.dat 27 70 10µm classifications of AGB stars
table4.dat 28 39 10µm classifications of supergiant stars
table5.dat 32 59 Comparing classifications - AGB star features
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See also:
II/125 : IRAS catalogue of Point Sources, Version 2.0 (IPAC 1986)
Byte-by-byte Description of file: table1.dat table2.dat
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Bytes Format Units Label Explanations
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1- 2 I2 h RAh Right Ascension J2000 (hours) from SIMBAD
4- 5 I2 min RAm Right Ascension J2000 (minutes)
7- 10 F4.1 s RAs Right Ascension J2000 (seconds)
12 A1 --- DE- Declination J2000 (sign)
13- 14 I2 deg DEd Declination J2000 (degrees)
16- 17 I2 arcmin DEm Declination J2000 (minutes)
19- 20 I2 arcsec DEs Declination J2000 (seconds)
22- 32 A11 --- Name Source name (1)
34- 43 A10 --- IRAS IRAS name
45- 87 A43 --- Names Other names
89- 92 A4 --- Var Variability type (2)
94-102 A9 --- SpType Spectral type
105-112 A8 "DD/MM/YY" Obs Observation date
114-126 A13 --- Cal Calibrator
129-135 F7.3 10-12W/m2/um S8um 8.0µm flux
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Note (1): For T Cet and V Eri, it is unclear whether each star is a giant or a
supergiant - see Sect. 2.2.
Note (2): Variability type: M = Mira; SR = semi-regular variable.
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Byte-by-byte Description of file: table3.dat table4.dat
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Bytes Format Units Label Explanations
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1- 11 A11 --- Name Object name
13- 28 A16 --- AGB 10µm classification (1)
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Note (1): The dust features of the AGB stars are classified into six groups:
broad AGB, where the feature extends from 8µm to about 12.5µm
with little structure;
broad+sil AGB, which consists of a broad feature with an
emerging 9.7µm silicate bump;
and four silicate AGB groups in which a ``classic'' 9.7µm
silicate feature gets progressively narrower.
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 11 A11 --- Name Source name
13- 14 A2 --- Var Variability type (1)
16- 26 A11 ---- Class Our class
28- 31 A4 --- SP95 Sloan & Price (1995ApJ...451..758S 1995ApJ...451..758S) class (2)
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Note (1): Variability type: M = Mira; SR = semi-regular variable.
Note (2): Sloan & Price Silicat Emission classification:
from SE1 (broadest profile) to SE8 (narrowest profile)
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History:
From A&AS electronic version
(End) James Marcout, Patricia Bauer [CDS] 13-Nov-2000