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J/A+AS/119/271 Be stars uvby{beta} photometry (Fabregat+, 1996)
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Be stars in open clusters. I. uvby{beta} photometry.
Fabregat J., Torrejon J.M., Reig P., Bernabeu G., Busquets J.,
Marco A., Reglero V.
<Astron. Astrophys. Suppl. Ser. 119, 271 (1996)>
=1996A&AS..119..271F (SIMBAD/NED BibCode)
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ADC_Keywords: Stars, Be; Photometry, uvby, beta
Keywords: techniques: photometric - stars: emission-line, Be -
open clusters and associations: general
Description:
We present uvby{beta} photometry for Be stars in eight open clusters
and two OB associations. It is shown that Be stars occupy anomalous
positions in the photometric diagrams, which can be explained in terms
of the circumstellar continuum radiation contribution to the
photometric indices. In the (b-y)_0_-M_V_ plane Be stars appear redder
than the non emission B stars, due to the additional reddening caused
by the hydrogen free-bound and free-free recombination in the
circumstellar envelope. In the c_0_-M_V_ plane the earlier Be stars
present lower c_0_ values than absorption-line B stars, which is
caused by emission in the Balmer discontinuity, while the later Be
stars deviate towards higher c_0_ values, indicating absorption in the
Balmer discontinuity of circumstellar origin.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1 104 22 Catalogue of 22 observed stars
tab5-14 114 80 Photometric data for Be stars
table15 105 56 Photometric data for B stars not classified as Be
tables.tex 79 616 LaTeX version of tables
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Byte-by-byte Description of file: table1
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Bytes Format Units Label Explanations
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2- 12 A11 --- Name Star name
17- 21 F5.3 mag Vmag V magnitude
24- 29 F6.3 mag b-y b-y color index
32- 37 F6.3 mag m1 m1 color index
40- 45 F6.3 mag c1 c1 color index
47- 51 F5.3 mag Hbeta Hbeta color index
53- 54 I2 --- N Number of measures
56- 58 I3 mmag e_Vmag ? rms uncertainty on Vmag
60- 62 I3 mmag e_b-y ? rms uncertainty on b-y
64- 66 I3 mmag e_m1 ? rms uncertainty on m1
68- 70 I3 mmag e_c1 ? rms uncertainty on c1
72- 74 I3 mmag e_Hbeta ? rms uncertainty on Hbeta
77- 80 I4 mmag DVmag Standard value minus transformed value
83- 86 I4 mmag Db-y Standard value minus transformed value
89- 92 I4 mmag Dm1 Standard value minus transformed value
95- 98 I4 mmag Dc1 Standard value minus transformed value
101-104 I4 mmag DHbeta ? standard value minus transformed value
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Byte-by-byte Description of file: tab5-14 table15
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Bytes Format Units Label Explanations
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1- 13 A13 --- Cluster Open cluster or association name
15- 18 I4 --- No Star number (1)
20- 27 A8 --- Name HD or BD designation
28 A1 --- n_Name Note on name (table13)
29- 34 F6.3 mag Vmag V magnitude
36- 41 F6.3 mag b-y b-y color index
43- 48 F6.3 mag m1 m1 color index
50- 55 F6.3 mag c1 c1 color index
57- 61 F5.3 mag Hbeta Hbeta color index
63- 67 F5.3 mag e_Vmag ? rms uncertainty on Vmag
69- 73 F5.3 mag e_b-y ? rms uncertainty on b-y
75- 79 F5.3 mag e_m1 ? rms uncertainty on m1
81- 85 F5.3 mag e_c1 ? rms uncertainty on c1
87- 91 F5.3 mag e_Hbeta ? rms uncertainty on Hbeta
93- 94 I2 --- N Number of individual measurements
96- 97 I2 --- Ref ? References (only for tab5-14) (2)
99-101 A3 --- Note [*1-4 ,] Notes (3)
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Note (1): the following designations were taken:
h and chi Per: star number from Oosterhoff (1937AnLei..17a...1O)
NGC 663: star number from Wallenquist (1929MeUpp..42.....W)
Pleiades: star number from Hertzsprung (1947AnLei..19....3H)
alpha Per: star number from Heckmann et al. (1956AN....283..109H)
Orion OB1: star number from Warren and Hesser (1977ApJS...34..115W)
NGC 2323: star number from Cuffey (1941ApJ....94...55C)
NGC 2422: star number from Schewick (1966VeBon..74....1V)
NGC 6611: star number from Walker (1961ApJ...133..438W)
NGC 7654: star number from Lundby (1946UppAn...1j...1L)
Cepheus OB3: star number from Blaauw et al. (1959ApJ...130...69)
Note (2): the numbers refer to the following references:
1.- Wackerling (1970MmRAS..73..153W)
2.- Hardorp et al., (1965), Catalogue <III/76>
3.- Slettebak (1968ApJ...154..933S)
4.- Fabregat et al., (1994, Be Star News. 29, 8)
5.- Schild & Romanishin (1976ApJ...204..493S)
6.- Gonzalez & Gonzalez (1954BOTT....1i...3G)
7.- Slettebak (1985ApJS...59..769S)
8.- Merrill & Burwell (1943ApJ....98..153M)
9.- Merrill & Burwell (1933ApJ....78...87M)
10.- Schild (1965ApJ...141..979S)
11.- Merrill & Burwell (1949ApJ...110..387M)
12.- Sanduleak & Bidelman (1980PASP...92...72S)
13.- Coyne et al. (1978VatOP...1..257C)
14.- Sanduleak (1990AJ....100.1239S)
15.- Dolidze (1975, Bull. Abastumani Astrophys. Obs. 47, 3)
16.- Bidelman (1976IAUS...70..457B)
17.- Irvine (1975ApJ...196..773I)
18.- Morgan et al. (1995ApJS....2...41M)
19.- Lesh (1968ApJS...17..371L)
20.- Bartkus (1964VilOB..13...29B)
21.- MacConnell (1961A&AS...44..387M)
22.- Dworetski (1976AJ.....80..131D)
23.- Walker (1961ApJ...133..438W)
24.- Hiltner (1956ApJS....2..389H)
25.- Bond (1973PASP...85..405B)
26.- Blaauw et al. (1959ApJ...130...69B)
Note (3): The following symbols are used in the notes:
*: Possible non-members (tab5-14)
1: Used as standard (table15)
2: Nonmember of the cluster or association (table15)
3: Chemically peculiar star (Ap or Am, Renson 1988A&AS...76..127R)
(table15)
4: Variable star IL Cephei. Herbig Ae/Be star. (table15)
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References:
Bartkus R. 1964, Bull. Vilnius Astr. Obs. 13, 29 (1964VilOB..13...29B)
Bidelman W.P. =1976IAUS...70..457B
Blaauw A., Hiltner W.A., Johnson H.L. =1959ApJ...130...69B
Bond H.E. =1973PASP...85..405B
Coyne G.V. et al., 1978, Publ. Vatican Obs. 1, 257. (1978VatOP...1..257C)
Cuffey J. =1941ApJ....94...55C
Dolidze M.V. 1975, Bull. Abastumani Astrophys. Obs. 47, 3
Dworetski M.M. =1976AJ.....80..131D
Fabregat J., Torrejon J.M., Bernabeu G. 1994b, Be Star News. 29, 8
Gonzalez et al., 1954, Bol. Obs. Tonantz. Tacub. 9, 3 (1954BOTT....1i...3G)
Hardorp J., Theile I., Voight H.H. 1965 =Catalogue <III/76>
Heckmann O. et al., 1956, Astr. Nachr. 283, 109 (1956AN....283..109H)
Hertzsprung E. 1947, Ann. Sterrewatch Leiden 19, 3 (1947AnLei..19....3H)
Hiltner W.A. =1956ApJS....2..389H
Irvine N.J. =1975ApJ...196..773I
Lesh J.R. =1968ApJS...17..371L
Lundby A. 1946, Uppsala Astr. Obs. Ann. 1, 10 (1946UppAn...1j...1L)
MacConnell D.J. =1981A&AS...44..387M
Merrill P.W., Burwell C.G. =1933ApJ....78...87M
Merrill P.W., Burwell C.G. =1943ApJ....98..153M
Merrill P.W., Burwell C.G. =1949ApJ...110..387M
Morgan W.W., Code A.D., Withford A.E. =1955ApJS....2...41M
Oosterhoff P.T., 1937, Ann. Sterrewatch Leiden 17, 1 (1937AnLei..17a...1O)
Renson P. 1988, =1988A&AS...76..127R
Sanduleak N. =1990AJ....100.1239S
Sanduleak N., Bidelman W.P. =1980PASP...92...72S
Schewick H. 1966, Veroff. Astr. Inst. Bonn, 74 (1966VeBon..74....1V)
Schild R.E. =1965ApJ...141..979S
Schild R.E., Romanishin W. =1976ApJ...204..493S
Slettebak A. =1968ApJ...154..933S
Slettebak A. =1985ApJS...59..769S
Wackerling L.R. 1970, Mem. R.A.S. 73, 153 (1970MmRAS..73..153W)
Walker M.F. =1961ApJ...133..438W
Wallenquist A. 1929, Medd. Astr. Obs. Uppsala 42 (1929MeUpp..42.....W)
Warren W.H., Hesser J.E. =1977ApJS...34..115W
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(End) Patricia Bauer [CDS] 07-May-1996