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J/A+A/493/79     UBVRI photometry in Pismis 11 and Alicante 5    (Marco+, 2009)

The open cluster Pismis 11 and the very luminous blue supergiant HD 80077. I. Physical parameters of the cluster. Marco A., Negueruela I. <Astron. Astrophys. 493, 79 (2009)> =2009A&A...493...79M
ADC_Keywords: Clusters, open ; Photometry, UBVRI Keywords: open clusters and associations: individual: Pismis 11 - stars : Hertzsprung-Russell (HR) and C-M diagrams - stars: early-type Abstract: The very luminous blue supergiant HD 80077 has been claimed to be a member of the young open cluster Pismis 11, and hence a hypergiant. Membership of the cluster would mean that it is one of the brightest stars in the Galaxy, and one of the few evolved very massive stars whose distance can be accurately determined. We carry out a comprehensive study of the open cluster Pismis 11, which allows us to derive with accuracy its distance and reddening. We obtained UBVRI photometry of the cluster field and low-resolution spectroscopy of a number of putative members. We derive spectral types from the spectra and determine that the reddening in this direction is standard. We then carry out a careful photometric analysis that allows us to determine individual reddening values, deriving unreddened parameters that are used for the main sequence fit. Description: Coordinates and photometry for stars in the open cluster Pismis 11 and the new open cluster Alicante 5. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 64 145 Position in the map of stars with photometry in the field of Pismis 11 (No. 1 to 147) table3.dat 95 145 Photometry for stars in Pismis 11 table5.dat 95 105 Photometry for stars in Alicante 5 table6.dat 64 105 Position in the map of stars with photometry in Alicante 5 (No. 1 to 105) table8.dat 64 43 Photometry for membership in Pismis 11 table9.dat 64 22 Photometry for membership in Alicante 5
Byte-by-byte Description of file: table[26].dat
Bytes Format Units Label Explanations
1- 3 I3 --- Seq [1/147] Number of the star in our nomenclature 5- 11 F7.2 pix Xpos ?=- X-Pixel position in the map 13- 19 F7.2 pix Ypos ?=- Y-Pixel position in the map 21- 22 I2 h RAh ? Right ascension (J2000.0) 24- 25 I2 min RAm ? Right ascension (J2000.0) 27- 32 F6.3 s RAs ? Right ascension (J2000.0) 34 A1 --- DE- Declination sign (J2000.0) 35- 36 I2 deg DEd ? Declination (J2000.0) 38- 39 I2 arcmin DEm ? Declination (J2000.0) 41- 45 F5.2 arcsec DEs ? Declination (J2000.0) 47- 58 A12 --- USNOB1 ?=- USNOB-1 identification 60- 64 A5 --- Note [2MASS ] For stars that have not identification in USNOB-1, we use 2MASS identification
Byte-by-byte Description of file: table[35].dat
Bytes Format Units Label Explanations
1- 3 I3 --- Seq [1/147] Number of the star in our nomenclature 5- 10 F6.3 mag Vmag ?=- Magnitude in V band 12- 16 F5.3 mag e_Vmag ?=- Deviation Standard in V 18 I1 --- o_Vmag ?=- Number of measurements in V 20- 25 F6.3 mag V-R ?=- Color index (V-R) 27- 31 F5.3 mag e_V-R ?=- Deviation Standard in (V-R) 33 I1 --- o_V-R ?=- Number of measurements in (V-R) 35- 41 F7.4 mag V-I ?=- Color index (V-I) 43- 47 F5.3 mag e_V-I ?=- Deviation Standard in (V-I) 49 I1 --- o_V-I ?=- Number of measurements in (V-I) 51- 56 F6.3 mag U-B ?=- Color index (U-B) 58- 62 F5.3 mag e_U-B ?=- Deviation Standard in (U-B) 64 I1 --- o_U-B ?=- Number of measurements in (U-B) 66- 71 F6.3 mag Bmag ?=- Magnitude in B 73- 77 F5.3 mag e_Bmag ?=- Deviation standard in B 79 I1 --- o_Bmag ?=- Number of measurements in B 81- 85 F5.3 mag B-V ? Color index (B-V) 87- 91 F5.3 mag e_B-V ? Deviation Standard in (B-V) 93 I1 --- o_B-V ? Number of measurements in (B-V) 95 A1 --- Flag [*] * indicates "Photometry for membership" in tables 8 and 9 (for tables 3 and 5 resp.)
Byte-by-byte Description of file: table[89].dat
Bytes Format Units Label Explanations
1- 3 I3 --- Seq [1/147] Number of the star in our nomenclature 5- 10 F6.3 mag V0mag Deredening magnitude in V band 12- 16 F5.3 mag e_V0mag Deviation Standard in V0 18- 22 F5.3 mag E(B-V) Color excess in (B-V) 24- 28 F5.3 mag e_E(B-V) Deviation Standard in E(B-V) 30- 34 F5.3 mag AV ?=- Absorption in V band 36- 40 F5.3 mag e_AV ?=- Deviation standard in AV 42- 47 F6.3 mag (B-V)0 Intrinsic color in (B-V) 49- 53 F5.3 mag e_(B-V)0 Deviation Standard in (B-V)0 55- 64 A10 --- SpType Spectral type obtained by photometry
Acknowledgements: Amparo Marco Tobarra, tobarra(at)dfists.ua.es
(End) Patricia Vannier [CDS] 20-Oct-2008
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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