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J/AJ/123/1570       alpha Persei and Praesepe Clusters       (Patience+, 2002)

A high angular resolution multiplicity survey of the open clusters α Persei and Praesepe. Patience J., Ghez A.M., Reid I.N., Matthews K. <Astron. J. 123, 1570 (2002)> =2002AJ....123.1570P
ADC_Keywords: Clusters, open ; Stars, double and multiple ; Stars, variable ; Keywords: binaries: general - open clusters and associations: individual (alpha Persei, Praesepe) Abstract: Two hundred forty-two members of the Praesepe and alpha Persei clusters have been surveyed with high angular resolution 2.2µm speckle imaging on the 3m Infrared Telescope Facility, the 5m Hale, and the 10m Keck telescopes, along with direct imaging using the near-infrared camera (NICMOS) aboard the Hubble Space Telescope. The observed stars range in spectral type from B (∼5M) to early M (∼0.5M), with the majority of the targets more massive than ∼0.8M. The one quadruple and 39 binary systems detected encompass separations from 0.053" to 7.28"; 28 of the systems are new detections, and there are nine candidate substellar companions. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 104 142 alpha Persei sample table2.dat 104 100 Praesepe sample table4a.dat 133 21 alpha Persei stellar binaries table4b.dat 133 9 alpha Persei faint doubles table5a.dat 133 12 Praesepe binaries table6.dat 86 152 alpha Persei single stars table7.dat 86 111 Praesepe single stars
See also: I/257 : Proper Motions in Praesepe (Wang+, 1995) I/68 : Positions & Proper Motions in alpha Per (Fresneau, 1980) III/55 : Radial Velocities in Open Clusters (Mermilliod 1979) J/A+A/354/881 : Radial velocities of Praesepe + Hyades Am stars (Debernardi+, 2000) J/A+A/375/989 : JHK photometry of Praesepe low-mass stars (Bouvier+, 2001) J/A+AS/109/29 : Very low mass stars in Praesepe (Hambly+, 1995) J/A+AS/129/9 : Delta Sct stars in Praesepe (Pena+ 1998) J/AJ/106/637 : ICCD speckle observations. IX (Mason+, 1993) J/AJ/106/1080 : Lithium in Praesepe (Soderblom+, 1993) J/AJ/109/1379 : Praesepe + M 67 spectral standards (Allen+ 1995) J/ApJ/521/682 : Binaries in the Praesepe and Coma clusters (Abt+, 1999) J/A+A/298/115 : ROSAT study of Praesepe (Randish+, 1995) J/ApJ/448/683 : Hyades RASS observations (Stern+ 1995) J/AN/319/201 : Alpha Per cluster low-mass members. I. (Prosser+, 1998) J/AN/319/215 : Alpha Per cluster low-mass members. II. (Prosser+, 1998) Byte-by-byte Description of file: table[12].dat
Bytes Format Units Label Explanations
1- 8 A8 --- Name Name (G1) 10- 18 A9 --- BD BD designation 20- 24 I5 --- HD ? HD designation 26- 27 I2 h RAh Right ascension (J2000.0) (1) 29- 30 I2 min RAm Right ascension (J2000.0) (1) 32- 37 F6.3 s RAs Right ascension (J2000.0) (1) 39 A1 --- DE- Declination sign (J2000.0) (1) 40- 41 I2 deg DEd Declination (J2000.0) (1) 43- 44 I2 arcmin DEm Declination (J2000.0) (1) 46- 50 F5.2 arcsec DEs Declination (J2000.0) (1) 52- 57 F6.3 mag Vmag V magnitude (1) 58- 63 F6.3 mag B-V ? B-V colour index (1) 64- 73 A10 --- SpType Spectral type (1) 75- 80 F6.3 mag Kmag ? 2MASS K magnitude 81 A1 --- n_Kmag [e] e: Not in 2MASS database 82 A1 --- l_logLX Limit flag on logLX 83- 87 F5.2 [10-7W] logLX ? X-ray luminosity (2) 89 A1 --- l_logLX2 Limit flag on logLX2 90- 94 F5.2 [10-7W] logLX2 ? X-ray luminosity from Randich et al., 1996A&A...305..785R 96 A1 --- l_vsini Limit flag on vsini 97- 99 I3 km/s vsini ? Rotational velocity 101-104 A4 --- Tel Telescope (3)
Note (1): From C.F. Prosser (ftp://cfa-ftp.harvard.edu/pub/stauffer/clusters ) or SIMBAD Note (2): X-ray luminosity from: table1: Prosser et al., 1996AJ....112.1570P table2: Randich & Schmitt, 1995, Cat. J/A+A/298/115 and Stern et al., 1995, Cat. J/ApJ/448/683 Note (3): Telescopes as follows: I = IRTF P = Palomar K = Keck H = HST
Table 3: Observing summary -------------------------------------------------------------------------------- Telescope Date Obs Technique -------------------------------------------------------------------------------- alpha Per -------------------------------------------------------------------------------- Palomar 1997 Oct 8 45 Speckle 1997 Dec 4-9 43/3 Speckle + shift-and-add/shift-and-add only IRTF 1998 Feb 18-20 14/33 Speckle + shift-and-add/shift-and-add only HST 1998 Feb 28; 1998 Jul 25; 33 Imaging 1998 Aug 8, 23, 26-28, 31 Keck 1999 Jan 6-7 7 Speckle + shift-and-add -------------------------------------------------------------------------------- Praesepe -------------------------------------------------------------------------------- Palomar 1995 Nov 12-13 8 Speckle 1996 Jan 8-9 26 Speckle 1998 Feb 18-20 20/23 Speckle + shift-and-add/shift-and-add only IRTF 1999 Feb 13-15 35 Speckle + shift-and-add Keck 1999 Jan 6-7 11 Speckle + shift-and-add Byte-by-byte Description of file: table4a.dat table4b.dat table5a.dat
Bytes Format Units Label Explanations
1- 8 A8 --- Name Name (G1) 9- 10 A2 --- m_Name Multiplicity index on Name 12- 18 A7 --- Tel Telescope 20- 29 A10 "YYYY/MM/DD" Date Observation date 31- 35 F5.3 arcsec Sep Separation 37- 41 F5.3 arcsec e_Sep rms uncertainty on Sep 43- 49 F7.3 deg PA Position angle 51- 55 F5.3 deg e_PA rms uncertainty on PA 57- 61 F5.3 mag DF140W F140W (1.3µm) detection limit for unseen companions for the single stars 63- 67 F5.3 mag e_DF140W rms uncertainty on DF140W 69- 72 F4.2 solMass M1 ? Mass of the first component 73 A1 --- n_M1 [G] G: Giant 74- 77 F4.2 solMass M2 ? Mass of the second component 79- 83 F5.3 --- q ? Mass ratio, M2/M1 85 I1 --- NComp ? Number of component 87-133 A47 -- Com Comments (G2)
Byte-by-byte Description of file: table6.dat table7.dat
Bytes Format Units Label Explanations
1- 8 A8 --- Name Name (G1) 10- 16 A7 --- Tel Telescope 18- 27 A10 "YYYY/MM/DD" Date Observation date 29- 32 F4.2 mag DF140W ? F140W (1.3µm) detection limit for companions at a separation of 0.15" 34- 37 F4.2 --- q ? Mass ratio at 0.15" 38 A1 --- n_q [G] G: giant 40 A1 --- qlim Mass ratio limit 42- 86 A45 --- Com Comments (G2)
Global notes: Note (G1): Nomenclature: alpha Persei: AP nnn = Cl* Melotte 20 AP nnn, Prosser et al., 1996AJ....112.1570P HE nnnn = Cl Melotte 20 nnnn, Heckmann et al., 1956AN....283..109H Praesepe: KW nnn = Cl* NGC 2632 KW nnn, Klein Wassink, 1927PGro...41....1K A nnnn = Cl* NGC 2632 Art nnnn, Artiukhina, 1971SoSht.172....3A Note (G2): Comments: Single (S), binary (B), or triple (T), and separation or period: AW99: Abt & Willmarth, 1999, Cat. J/ApJ/521/682 ADS: Aitken, 1932ADS...C......0A B91: Bolte, 1991ApJ...376..514B B&C: Burkhart & Coupry, 1989A&A...220..197B IDS: Jeffers & van den Bos, 1963IDS...C......0J M: Mason et al., 1993, Cat. J/AJ/106/637 MM99: Mermilliod & Mayor, 1999A&A...352..479M M&A: Morrell & Abt, 1992ApJ...393..666M P&W: Peterson & White, 1984AJ.....89..824P P: Prosser, 1992, Cat. V/80
History: From electronic version of the journal
(End) James Marcout, Patricia Bauer [CDS] 13-May-2002
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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