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J/AJ/132/1517       Spectroscopy of M dwarfs in Praesepe     (Kafka+, 2006)

Spectroscopy of active and inactive M dwarfs in Praesepe. Kafka S., Honeycutt R.K. <Astron. J., 132, 1517-1526 (2006)> =2006AJ....132.1517K
ADC_Keywords: Clusters, open ; Stars, dwarfs ; Stars, late-type ; Equivalent widths Keywords: open clusters and associations: individual (Praesepe) - stars: activity - stars: late-type Abstract: Spectroscopy of 222 late-type dwarfs in the Praesepe open cluster is used to measure the strengths of molecular and atomic features and to examine their sensitivity to chromospheric activity as measured by the strength of Hα emission. Description: Our spectra were acquired using the multiobject spectrograph (MOS) Hydra and the T2KC CCD camera on the WIYN3 3.5m telescope on four nights in 2003 (March 7-10 UT) and seven nights in 2004 (January 7-10, February 2, and May 9-10). The weather during both the 2003 and 2004 observing runs was partly cloudy, with variable seeing. Objects: ----------------------------------------- RA (2000) DE Designation(s) ----------------------------------------- 08 40.4 +19 41 Praesepe = M 44 ----------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 81 224 Stars Observed
See also: J/AJ/106/1080 : Lithium in Praesepe (Soderblom+, 1993) J/A+AS/109/29 : Very low mass stars in Praesepe (Hambly+, 1995) I/257 : Proper Motions in Praesepe (Wang+, 1995) J/A+A/298/115 : ROSAT study of Praesepe (Randish+, 1995) J/AJ/109/1379 : Praesepe + M 67 spectral standards (Allen+ 1995) J/A+AS/129/9 : Delta Sct stars in Praesepe (Pena+ 1998) J/ApJ/521/682 : Binaries in the Praesepe and Coma clusters (Abt+, 1999) J/A+A/354/881 : Praesepe + Hyades Am stars radial velocities (Debernardi+ 2000) J/A+A/375/989 : JHK photometry of Praesepe low-mass stars (Bouvier+, 2001) J/AJ/123/1570 : alpha Persei and Praesepe Clusters (Patience+, 2002) J/AJ/124/1570 : JHKs photometry in Praesepe (Adams+, 2002) J/MNRAS/342/1241 : Low-mass stars in M45 and M44 (Pinfield+, 2003) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 3 I03 --- HSHJ Star ID from Hambly et al. (1995, Cat. J/A+AS/109/29), Cl* NGC 2632 HSHJ in Simbad 5- 9 F5.2 mag Rmag Hambly et al. (1995, Cat. J/A+AS/109/29) R band magnitude (R at 590nm) 11- 14 F4.2 mag R-I Hambly et al. (1995, Cat. J/A+AS/109/29) (R-I) color index (I at 715nm) 16- 19 F4.2 mag V-I The (V-I) color index 21- 26 F6.2 0.1nm EW(Ha) Hα equivalent width in Angstroms 28- 31 F4.2 0.1nm EW(KI) ? K I (7699) equivalent width in Angstroms 33- 37 F5.2 0.1nm EW(NaI)1 ? Na I (8183) equivalent width in Angstroms 39- 42 F4.2 0.1nm EW(NaI)2 ? Na I (8194) equivalent width in Angstroms 44- 48 F5.2 0.1nm EW(CaII)1 ? Ca II (8498) equivalent width in Angstroms 50- 55 F6.2 0.1nm EW(CaII)2 ? Ca II (8542) equivalent width in Angstroms 57- 61 F5.2 0.1nm EW(CaII)3 ? Ca II (8662) equivalent width in Angstroms 63- 66 F4.2 --- CaOH ? The CaOH index 68- 71 F4.2 --- TiO2 ? The TiO2 index 73- 76 F4.2 --- TiO4 ? The TiO4 index 78- 81 F4.2 --- TiO5 ? The TiO5 index
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 11-Jul-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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