J/ApJS/112/557 Classification of IRAS Sources (Kwok+ 1997)
Classification and Identification of IRAS Sources With Low-Resolution Spectra
Kwok S., Polk K., Bidelman W.P.
<Astrophys. J. Suppl. Ser. 112, 557 (1997)>
=1997ApJS..112..557K 1997ApJS..112..557K
ADC_Keywords: Infrared sources; Cross identifications; Spectral types;
Interstellar medium
Keywords: catalogs - circumstellar matter - infrared stars -
stars: AGB and post-AGB - stars: fundamental parameters
Abstract:
IRAS low-resolution spectra were extracted for 11,224 IRAS sources.
These spectra were classified into astrophysical classes, based on the
presence of emission and absorption features and on the shape of the
continuum. Counterparts of these IRAS sources in existing optical and
infrared catalogs are identified, and their optical spectral types are
listed if they are known. The correlations between the photospheric/
optical and circumstellar/infrared classifications are discussed.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 139 11224 IDs, classes, 12 micron fluxes, 12-25um colors
table1.tsv 91 11224 Tab-separated form of Table 1 (per AAS CD-ROM)
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See also:
III/197 : IRAS Low Resolution Spectra (IRAS team, 1987)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 11 A11 --- IRAS *IRAS Source name (Cat. II/125)
12- 17 I6 --- SAO *? SAO designation (Cat. I/131)
18- 29 A12 --- HD_BD *HD or BD designation
30- 41 A12 --- GCVS *GCVS designation (Cat. B/gcvs)
42- 48 A7 --- IRC *IRC designation (Cat. II/2)
49- 60 A12 --- AFGL *AFGL designation (Cat. II/94)
61- 94 A34 --- Other *Other designation
95-124 A30 --- Sp *Optical MK spectral type
125 A1 --- LRS LRS classification (see Cat. III/197, Note 1)
126-131 I6 Jy S12 12um IRAS flux
133-137 F5.2 --- C12-25 12um-25um color
139 A1 --- p12 *[x] 12um Peaker
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Note on IRAS:
The IRAS sources in order of increasing right ascension (J1950) with
the PSC designation.
Note on SAO:
The probable SAO catalog number of the source, taken mainly but not
entirely from the PSC. Because of the SAO catalog's accurate
positions, identifications with its stars are considerably more
secure than those with less accurate coordinates.
Note on HD_BD:
Probable identifications with Henry Draper stars, or, for objects
not included therein, with stars listed in the Bonner or Cordoba
Durchmusterungs. Henry Draper Extension numbers are not used. The
use of the Cordoba catalog for the entire southern sky seems
appropriate for red stars that would perhaps not be contained in the
Cape Photographic Durchmusterung (CPD); note that this is not the
convention followed in the HD or SAO catalogs. A very few CPD
designations have been used for stars not in the Cordoba
Durchmusterung. The Durchmusterung designation originally
contained an extended ASCII character for the degree symbol,
(0xf8, decimal 248). This has been replaced with a blank to
separate the declination from the number (e.g. +26 4746).
Note on GCVS:
Variable star name from the General Catalogue of Variable Stars
(GCVS; Kholopov et al. 1985-1987), or in the New Catalogue of
Variable Stars (NSV; Kukarkin et al. 1982).
Note on IRC:
Identification from the CalTech Two-Micron Survey (Neugebauer &
Leighton 1969; see Cat. II/2).
Note on AFGL:
Identification from the Revised AFGL Infrared Sky Survey Catalogue
(Price & Murdock 1983; see Cat. II/94).
Note on Other:
Identification from the Bright Star Catalogue (Hoffleit 1982), with
either their Bayer Greek letter or Flamsteed numbers or with their
HR numbers. Identifications with carbon and S-type stars from
Stephenson's (1984, 1989) comprehensive catalogs use "CS" or "SS",
respectively. Also listed are the objects included in the First
Interim Equatorial Catalog (EIC; Sweeney et al. 1978). Various other
identifications are made with HII regions, planetary nebulae,
emission-line objects contained in the Mount Wilson catalog and so
on.
Note on Sp:
Optical spectral types of the IRAS sources that are considered
stellar, compiled from a number of disparate sources by
W. P. Bidelman. The symbols in parenthesis are interpreted as
follows:
(PN) = the object is thought to be a planetary nebula
(neb) = the source is believed to be a nebula
(H II) = the source either has been detected as an H II region by
radio continuum observations or is a well-known bright nebula
(SiC) = the object has not been optically classified as a carbon
star but the LRS spectrum shows the 11.3um emission feature of SiC.
Note on p12:
"25um Peakers" (see Bidelman 1987, in IAU Symp. 122, Circumstellar
Matter, ed. I. Appenzeller & C. Jordan (Dordrecht: Reidel), 217),
IRAS sources whose flux density at 25um is higher than their flux
densities at 12 and 60um.
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Remarks:
As submitted by the authors to the AAS CD-ROM Series, fields in table1.dat
were separated by tabs. To meet the CDS/ADC standards, these have been
translated at ADC into fixed-width fields.
References:
Bidelman, W.P, =1987IAUS..122..217B 1987IAUS..122..217B
Hoffleit D., =1982bsc..book....H (Catalog: V/25B)
Kholopov P.N. et al., =1992BICDS..40...15K 1992BICDS..40...15K (Catalog: II/139B)
Kukarkin B.V. et al., =1982ncsv.book.....K 1982ncsv.book.....K (Catalog: II/140)
Neugebauer, G. & Leighton, R. B., =1969tmss.book.....N 1969tmss.book.....N (Catalog: II/2B)
Price, S.D. & Murdock, T.L., =1983AFGL..161.....P 1983AFGL..161.....P (Catalog: II/94)
Stephenson C.B., =1989PW&SO...3...53S 1989PW&SO...3...53S (Catalog: III/156)
Stephenson C.B., =1984gcss.book.....S 1984gcss.book.....S (Catalog: III/168)
Sweeney L.H. et al. 1978, Interim Equatorial Infrared Catalog,
TR-0078-(3409-20)-1, Aerospace Corp.
Origin: AAS CD-ROM series, Volume 9, 1997 Lee Brotzman [ADS] 27-Jul-97
History:
* 27-Jul-1997: Prepared by Lee Brotzman for AAS CD-ROM series, Volume 9, 1997
* 29-Jan-1999: Standardized ReadMe by James E. Gass [SSDOO/ADC]
* 27-Mar-1999: Corrections made at CDS by Fabienne Woelfel and
Francois Ochsenbein on table1.dat (table1.tsv unchanged):
GCVS names for sources IRAS 11472-0800, 12276-6435, 14281-6318,
17237-3011, 18320-1918, 18320-3502 ;
PK (planetary nebulae) for sources IRAS 04395+3601, 09530-5704,
12171-6238, 17383-3004 (K 1-4 removed)
IRAS number of RAFGL 4611S changed from 07316+2851 to 07316+2851
(End) James E. Gass [SSDOO/ADC] 29-Jan-1999