J/A+A/425/489 Late-type stars in the inner Milky Way (Comeron+, 2004)
A search for late-type supergiants in the inner regions of the Milky Way.
Comeron F., Torra J., Chiappini C., Figueras F., Ivanov V.D., Ribas S.J.
<Astron. Astrophys. 425, 489 (2004)>
=2004A&A...425..489C 2004A&A...425..489C
ADC_Keywords: Stars, late-type ; Stars, supergiant ; Equivalent widths ;
Photometry, infrared; Spectra, infrared
Keywords: stars: late-type - Galaxy: abundances - Galaxy: disk -
Galaxy: stellar contents - Galaxy: structure
Abstract:
We present the results of a narrow-band infrared imaging survey of a
narrow strip (12' wide) around the Galactic equator between 6° and
21° of galactic longitude aimed at detecting field stars with
strong CO absorption, mainly late-type giants and supergiants. Our
observations include follow-up low resolution spectroscopy (R=980) of
191 selected candidates in the H and K bands.
Description:
The file table1.dat includes the complete Table 1 of the paper with
the positions, 2MASS photometry, and selected spectrophotometric
indices of a number of features measured on the near-infrared (H and K
band) spectra of 195 cool stars observed with the SOFI instrument at
the New Technology Telescope (NTT) on La Silla. The files in "sp"
subdirectory contain the spectra of each star expressed as flux (in
arbitrary units) as a function of wavelength in microns.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 115 195 Position, 2MASS photometry and equivalent widths
of selected features of all the observed stars
sp/* . 195 Individual spectra
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Seq Object identification number
5- 6 I2 h RAh Right ascension (J2000)
8- 9 I2 min RAm Right ascension (J2000)
11- 15 F5.2 s RAs Right ascension (J2000)
17 A1 --- DE- Declination sign
18- 19 I2 deg DEd Declination (J2000)
21- 22 I2 arcmin DEm Declination (J2000)
24- 27 F4.1 arcsec DEs Declination (J2000)
29- 33 F5.2 mag Jmag 2MASS J magnitude
35- 39 F5.2 mag Hmag 2MASS H magnitude
41- 45 F5.2 mag Ksmag 2MASS Ks magnitude
47- 52 F6.3 0.1nm EWSiI Equivalent width, SiI feature (1.599um)
54- 59 F6.3 0.1nm EWCO63 Equivalent width, CO(6,3) feature (1.620um)
61- 66 F6.3 0.1nm EWNaI Equivalent width, NaI feature (2.207um)
68- 73 F6.3 0.1nm EWFeI Equivalent width, FeI feature (2.227um)
75- 80 F6.3 0.1nm EWCaI Equivalent width, CaI feature (2.263um)
82- 87 F6.3 0.1nm EWMgI Equivalent width, MgI feature (2.281um)
89- 94 F6.3 0.1nm EWCO20 Equivalent width, CO(2,0) feature (2.293um)
97-103 F7.4 --- IH2O H2O index
105-115 A11 --- SpFile Name of spectrum file in "sp" subdirectory
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Byte-by-byte Description of file: sp/*
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Bytes Format Units Label Explanations
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1- 8 F8.6 um Lambda Wavelength (microns)
11- 16 F6.4 --- Flux Flux (arbitrary units)
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Acknowledgements: Fernando Comeron
(End) Patricia Vannier [CDS] 28-Jun-2004