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J/A+AS/123/135      Spectral classifications of 180 IR stars (Ginestet+ 1997)

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)
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 (8370-8780Å) at a dispersion of 33Å/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:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 242 120 Classifications of the cool components, SP(IR), of stars with composite spectra table2.dat 55 60 Stars of the sample which exhibit a hot spectrum
Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
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)
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
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
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)
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
References: Ginestet et al., Paper I =1994A&AS..108..359G
(End) Patricia Bauer [CDS] 27-Sep-1996
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