J/ApJ/652/458 BVRHα photometry of candidates Be stars (Wisniewski+, 2006)
The role of evolutionary age and metallicity in the formation of classical Be
circumstellar disks. I. New candidate Be stars in the LMC, SMC, and Milky Way.
Wisniewski J.P., Bjorkman K.S.
<Astrophys. J., 652, 458-471 (2006)>
=2006ApJ...652..458W 2006ApJ...652..458W
ADC_Keywords: Magellanic Clouds ; Stars, Be ; Photometry
Keywords: circumstellar matter - galaxies: clusters: individual: Bruck 60,
Bruck 107, HW 43, LH 72, NGC 371, NGC 456, NGC 458, NGC 460, NGC 465,
NGC 1850, NGC 1858, NGC 1955, NGC 2027, NGC 2186, NGC 2383, NGC 2439 -
Magellanic Clouds - stars: emission-line, Be - techniques: photometric
Abstract:
We present B, V, R, and Hα photometry of eight clusters in the
Small Magellanic Cloud, five in the Large Magellanic Cloud, and three
Galactic clusters and use two-color diagrams (2-CDs) to identify
candidate Be star populations in these clusters. We find evidence that
the Be phenomenon is enhanced in low-metallicity environments, based
on the observed fractional early-type candidate Be star content of
clusters of age 10-25Myr.
Description:
Our photometry was obtained at the Cerro Tololo Inter-American
Observatory (CTIO) 0.9m telescope using the direct-imaging CCD, a
multiamplifier CCD, operated in the quad amplifier mode. Observations
were made on 2002 Oct 12-16.
Objects:
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RA (2000) DE Designation(s)
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00 51 41.7 -73 13 47 Bruck 60 = DEM S 60
01 01 44 -71 39 48 Bruck 107 = Bruck 107
01 01 07.1 -71 45 14 HW 43 = HW 43
05 32 12 -66 27 LH 72 = LH 72
01 03 25 -72 04 24 NGC 371 = Cl Melotte 5
01 14 00 -73 16 NGC 456 = Cl Lindsay 94
01 14 53.4 -71 32 59 NGC 458 = Cl Lindsay 96
01 14 41.5 -73 17 51 NGC 460 = Cl Lindsay 97
01 15 48 -73 19 NGC 465 = Cl Lindsay 99
05 08 45.8 -68 45 39 NGC 1850 = BRHT 5a
05 09 56.1 -68 54 06 NGC 1858 = LH 31
05 26 12 -67 29 54 NGC 1955 = KMHK 888
05 35 00 -66 55 00 NGC 2027 = KMHK 1105
06 12 06 +05 28 NGC 2186 = C 0609+054
07 24 41 -20 56 42 NGC 2383 = C 0722-208
07 40 48 -31 41 NGC 2439 = C 0738-315
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table4.dat 75 530 Photometric properties of the candidate Be stars
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See also:
J/A+AS/119/271 : Be stars uvbyβ photometry (Fabregat+, 1996)
J/A+AS/125/75 : UBV photometry of Be stars (Pavlovski+ 1997)
J/A+AS/129/289 : Long-term spectrophotometry of Be stars (Moujtahid+ 1998)
J/A+AS/134/489 : Be stars in MC young clusters (Keller+ 1999)
J/A+A/317/448 : BVRHalpha photometry of NGC 1818 (Grebel 1997)
J/A+A/376/144 : BV(RI)CHα photometry of NGC 663 (Pigulski+, 2001)
J/other/NewA/9.509 : IRAS observations of Be stars (Zhang+, 2004)
J/other/NewA/10.325 : 2MASS observations of Be stars (Zhang+, 2005)
J/MNRAS/361/1055 : BVI photometry of LMC Be stars (Sabogal+, 2005)
J/ApJ/622/1052 : byHα photometry of NGC 3766 (McSwain+, 2005)
J/A+A/462/683 : Velocities in SMC field of NGC 330 (Martayan+, 2007)
J/A+A/472/577 : NGC 330 Be stars and binaries (Martayan+, 2007)
J/A+A/478/659 : OGLE Be stars in Galactic Bulge (Sabogal+, 2008)
Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Cluster Cluster name
11- 14 A4 --- --- [WBBe]
16- 18 I3 --- Star Star number within the cluster (1)
20 I1 h RAh Hour of Right Ascension (J2000)
22- 23 I2 min RAm Minute of Right Ascension (J2000)
25- 28 F4.1 s RAs Second of Right Ascension (J2000)
30 A1 --- DE- Sign of the Declination (J2000)
31- 32 I2 deg DEd Degree of Declination (J2000)
34- 35 I2 arcmin DEm Arcminute of Declination (J2000)
37- 40 F4.1 arcsec DEs Arcsecond of Declination (J2000)
42- 46 F5.2 mag Vmag The V band magnitude
48- 51 F4.2 mag e_Vmag The error in Vmag
53- 57 F5.2 mag B-V The (B-V) color index
59- 62 F4.2 mag e_B-V The error in B-V
64- 68 F5.2 mag R-Ha The (R-Hα) color index
70- 73 F4.2 mag e_R-Ha The error in R-Ha
75 A1 --- St [CP] Be star status, as Candidate or Possible
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Note (1): Stars identified as WBBe Cluster Star, e.g.
"WBBe Bruck 60 2" for "Bruck 60 WBBe 2".
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 25-Jul-2008