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J/A+AS/123/135 Spectral classifications of 180 IR stars (Ginestet+ 1997)
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Spectral classifications in the near infrared of stars with composite spectra.
II. Study of a sample of 180 stars.
Ginestet N., Carquillat J.-M., Jaschek C., Jaschek M.
<Astron. Astrophys. Suppl. Ser. 123, 135 (1997)>
=1997A&AS..123..135G (SIMBAD/NED BibCode)
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ADC_Keywords: Spectra, infrared ; MK spectral classification
Keywords: stars: classification - infrared: stars - binaries: spectroscopic
Abstract:
A sample of 180 supposedly composite-spectrum stars has been studied
on the basis of spectra obtained in the near infrared (8370-8780{AA})
at a dispersion of 33{AA}/mm. The objective was to study the cooler
components of the systems. Of our sample, 120 are true composite
spectra, 35 are hot spectra of types B, F and 25 are Am stars. We find
a strong concentration of the cooler components of the composite
spectra around G8III. In view of the difficulty of classifying
composite spectra, because of the superposition of an early type dwarf
and a late type giant or supergiant spectrum, we have made several
tests to control the classification based upon the infrared region.
Since all tests gave positive results, we conclude that our
classifications can be considered as being both reliable and
homogeneous.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1 242 120 Classifications of the cool components, SP(IR),
of stars with composite spectra
table2 55 60 Stars of the sample which exhibit a hot spectrum
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Byte-by-byte Description of file: table1
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Bytes Format Units Label Explanations
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1- 8 A8 --- HD/BD HD of BD number of the star
10- 11 I2 h RAh Right ascension (J2000)
13- 14 I2 min RAm Right ascension (J2000)
16- 19 F4.1 s RAs Right ascension (J2000)
21 A1 --- DE- Declination sign
22- 23 I2 deg DEd Declination (J2000)
25- 26 I2 arcmin DEm Declination (J2000)
28- 29 I2 arcsec DEs Declination (J2000)
31- 35 F5.2 mag Vmag V magnitude
36 A1 --- u_Vmag Uncertainty flag on Vmag
38- 41 F4.2 mag B-V ? B-V color index
44- 54 A11 --- SpIR This work spectral type (1)
55 A1 --- n_SpIR [*] Note on the object (2)
57- 72 A16 --- Sp1 Spectral type
74- 91 A18 --- r_Sp1 References for spectral type (3)
93-106 A14 --- Sp2 Spectral type
107 A1 --- n_Sp2 [*] Note on the object (2)
108-125 A18 --- r_Sp2 References for spectral type (3)
127-142 A16 --- Sp3 Spectral type
144-160 A17 --- r_Sp3 References for spectral type (3)
162-173 A12 --- Sp4 Spectral type
175-190 A16 --- r_Sp4 References for spectral type (3)
192-197 A6 --- Sp5 Spectral type
199-213 A15 --- r_Sp5 References for spectral type (3)
215-225 A11 --- Sp6 Spectral type
227-242 A16 --- r_Sp6 References for spectral type (3)
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Note (1): A - or + sign following the Sp(IR) luminosity class indicates that the
object is probably slightly more or less luminous.
Note (2): Individual notes:
HD 18715: classification based on the cool component, since both
components are well separated (8")
HD 26630: standard MK G0 Ib
HD 51250: standard of radial velocity
HD 74395: standard MK G1 Ib
HD 84367: the secondary is probably an Am star
HD 197177: standard MK G8 IIb
HD 199378: the authors suspect the object to be composite (G5III+A)
HD 209278: visual binary, separated 3.7", but the classification is
based on the combined light
HD 212391: the classification is based on the spectrum of the cool
star since the separation of 4.3" permits to observe
individually each component.
Note (3): Abt (1977) =1977PASP...89...29A
Abt (1981) =1981ApJS...45..437A
Abt (1984) =1984ApJ...285..247A
Abt (1985) =1985ApJS...59...95A
Abt (1986) =1986ApJ...309..260A
Appenzeller (1967) =1967PASP...79..102A
Arellano (1986) =1986ApJ...302..767A
Bahng (1958) =1958ApJ...128..572B
Batten (1989) =1989PDAO...17....1B
Beavers (1982) =1982ApJS...49..273B
Bertaud (1970) =1970A&AS....1....7B
Bidelman (1954) =1954ApJS....1..175B
Bidelman (1957a) =1957PASP...69..147B
Bidelman (1957b) =1957PASP...69..326B
Bidelman (1958) =1958PASP...70..168B
Bidelman (1988) =1988PASP..100.1084B
Burki (1983) =1983A&A...124..256B
Catalogue HD =Catalogue <III/135>
Corbally (1984) =1984ApJS...55..657C
Cowley (1969) =1969AJ.....74..375C
Cowley (1971) =1971PASP...83..296C
Cowley (1976) =1976PASP...88...95C
Cowley (1979) =1979PASP...91...83C
Edwards (1976) =1976AJ.....81..245E
Evans (1979) =1979ApJ...228..497E
Griffin (1976) =1976Obs....96..153G
Griffin (1988) =1988JApA....9..193G
Griffin (1989) =1989JApA...10..433G
Griffin (1990) =1990JApA...11..281G
Griffin (1992) =1992A&A...254..289G
Griffin (1994) =1994MNRAS.270..409G
Harlan (1974) =1974AJ.....79..682H
Harmer (1983) =1983MNRAS.204..927H
Heard (1956) =1956PDDO....2..105H
Hendry (1978) =1978AJ.....83..615H
Hendry (1981) =1981AJ.....86..271H
Hoffleit (1982) =Catalogue <V/50>
Houk (1982) =Catalogue <III/80>
Houk (1988) =Catalogue <III/133>
Hynek (1959) =1959PASP...71..310H
Jaschek (1991) =1991A&A...252..229J
Keenan (1989) =Catalogue <III/150>
Kuhi (1963) =1963PASP...75..448K
Malaroda (1973) =1973PASP...85..328M
Malaroda (1975) =1975AJ.....80..637M
Markowitz (1969) Ph.D thesis, Ohio State Univ.
McAlister (1982) =1982AJ.....87..563M
Meisel (1968) =1968AJ.....73..350M
Moore (1950) =1950ApJ...112...48M
Olsen (1980) =1980A&AS...39..205O
Roman (1949) =1949ApJ...110..205R
Sato (1990) =1990A&AS...85.1069S
Slettebak (1955) =1955ApJ...121..653S
Slettebak (1969) =1969AJ.....74..373S
Stebbins (1956) =1956ApJ...123..440S
Stephenson (1960) =1960AJ.....65...60S
Stephenson (1969) =1969AJ.....74..689S
Stickland (1988) =1988IUE88...2...27S
Strassmeier (1990) =1990A&A...230..389S
Underhiller (1990) =1990A&A...230..389S
Underhill (1954) =1954AJ.....59..332U
Walker (1966) =1966Obs....86..154W
Wellmann (1951) =1951AN....279..257W
Wright (1970) =1970VA.....12..147W
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Byte-by-byte Description of file: table2
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Bytes Format Units Label Explanations
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1- 6 A6 --- HD/BD HD or BD name
8- 12 F5.2 mag Vmag Vmangitude
13 A1 --- u_Vmag Uncertainty flag on Vmag
14- 18 F5.2 mag B-V ? B- V color index
21- 36 A16 --- Sp Spectral type
37 A1 --- n_Sp [*] * when individual note (1)
39- 53 A15 --- SpIR This work spectral type
55 A1 --- n_SpIR [*] * when individual note (1)
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Note (1):
HD 14262: also classed A7V (Palmer et al., 1968RGOB..135..385P)
HD 16646: F4Vwl (Abt, 1984ApJ...285..247A)
HD 24346: slightly weak-lined F type star (Bidelman, 1988PASP..100.1084B)
HD 41724: Am (Bidelman, 1988PASP..100.1084B;
Carquillat et al., 1988A&AS...75..305C)
HD 48953: G5Ia+A5V (Markowitz, 1969, Ph.D thesis, Ohio State Univ.),
Ap Sr-Eu (Bidelman, 1988PASP..100.1084B)
HD 51565: G2IIIe (Kuhi, 1963PASP...75..448K); Am (Smith, 1973ApJS...25..277S)
HD 60178: Castor B
HD 68119: larger proper motion (CDS); moderatly weak-lines F type star
(Bidelman, 1988PASP..100.1084B)
HD 76369: appears normal (Bidelman, 1988PASP..100.1084B)
HD 76370: G5III+A0V (Markovitz, 1969, Ph.D thesis, Ohio State Univ.)
HD 83270: Am (Bidelman, 1988PASP..100.1084B;
Ginestet et al., 1991A&AS...91..265G)
HD 83808: SB2. The dominating spectrum is that of an Am star, the secondary
could be a late F type. Also classified A1V+F6II
(Markovitz, 1969, Ph.D thesis, Ohio State Univ.) and
A5V+F8III (Parsons, 1983ApJS...53..553P)
HD 86167: Am (Abt, 1984ApJ...285..247A)
HD 88923: F2Vwl (Abt, 1984ApJ...285..247A)
HD 91172: Fm Delta Del (Houk & Smoth-Moore, 1988 Catalogue <III/133>)
HD 97336: Bidelman (1988PASP..100.1084B): "not composite"
HD 107054: A8V (Palmer et al., 1968RGOB..135..385P);
A9IVn (Gray & Garrison, 1989ApJS...69..301G)
HD 114519: RS CVn (SB2), Algol eclipsing type binary;
Batten et al (19899PDAO...17....1B): F4IV-V+K0IV;
Strassmeier & Fekel (1990A&A...230..389S): F6IV+G8IV.
The spectrum is difficult to classify because of the high
rotation, but the Ti/Fe ratios suggest a secondary at least as
late as K4.
HD 120544: F7V (Cowley, 1976PASP...88...95C)
HD 123102: A9IV (Abt, 1981ApJS...45..437A); visual double, sep. 13.5"
HD 187949: A1V+F4III: (Markowitz, 1969Ph.D thesis, Ohio State Univ.);
Algol type eclipsing binary.
HD 206088: F0p Sr (Bertaud, 1959JO.....42...45B)
HD 208132: Am (Bertaud, 1965JO.....48..211B)
HD 209790: Am (Slettebak, 1963ApJ...138..118S)
HD 209791: F7V (Slettebak, 1963ApJ...138..118S)
HD 214605: Am (Bidelman, 1988PASP..100.1084B)
HD 239746: B2V comp.? (Niedzielski & Muciek, 1988AcA....38..225N)
HD 239933: is not in the CDS database
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References:
Ginestet et al., Paper I =1994A&AS..108..359G
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(End) Patricia Bauer [CDS] 27-Sep-1996