J/MNRAS/416/2233 Rotation velocity of dwarfs K5 stars (Houdebine, 2011)
Observation and modelling of main-sequence star chromospheres.
XVI. Rotation of dK5 stars.
Houdebine E.R.
<Mon. Not. R. Astron. Soc., 416, 2233-2246 (2011)>
=2011MNRAS.416.2233H 2011MNRAS.416.2233H
ADC_Keywords: Stars, dwarfs ; Rotational velocities
Keywords: stars: late-type - stars: rotation - subdwarfs
Abstract:
Using two different spectrographs, High Accuracy Radial velocity
Planet Search (HARPS) (European Southern Observatory) and SOPHIE
(Observatoire de Haute Provence), we have measured vsini for a sample
of dK5 stars. These are the first measurements of vsini for most of
the stars studied here.
We measured vsini to an accuracy of 0.3km/s and a detection limit of
about 0.5-1km/s. All our targets have similar (R-I)c colour. This is
an advantage and facilitates the determination of the narrowest line
profiles for vsini∼0. In our total sample, we detected rotation for 22
stars (three dK5e and 19 dK5 stars), and we did not detect rotation in
a further 22 stars. This result shows that there are many dK5 slow
rotators, and many more than for dM1 stars. We also report on a newly
discovered dK5e star, McC 522, which is also the fastest rotator in
our sample.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
stars.dat 66 88 List of studied stars
table1.dat 100 160 Parameters for the stars observed by HARPS (ESO),
UVES (ESO), SOPHIE (OHP) and ELODIE (OHP)
table2.dat 77 43 vsini for the stars in our sample
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See also:
J/MNRAS/403/2157 : Main-sequence star chromospheres (Houdebine+, 2010)
J/MNRAS/407/1657 : Rotation velocities of dwarf M stars (Houdebine, 2010)
Byte-by-byte Description of file: stars.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Name Star name
12- 13 I2 h RAh Simbad Hour of Right Ascension (J2000.0)
15- 16 I2 min RAm Simbad Minute of Right Ascension (J2000.0)
18- 21 F4.1 s RAs Simbad Second of Right Ascension (J2000.0)
23 A1 --- DE- Simbad Sign of the Declination (J2000.0)
24- 25 I2 deg DEd Simbad Degree of Declination (J2000.0)
27- 28 I2 arcmin DEm Simbad Arcminute of Declination (J2000.0)
30- 31 I2 arcsec DEs Simbad Arcsecond of Declination (J2000.0)
34- 39 F6.3 mag Bmag ? Simbad B band magnitude
41- 46 F6.3 mag Vmag Simbad V band magnitude
48- 55 A8 --- SpType Simbad MK spectral type
57- 66 A10 --- SName Simbad name
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 A10 --- Name Star name
12- 18 F7.4 [Sun] [M/H] ?=- Metallicity from literature
20- 25 F6.3 mag Vmag V magnitude from literature
27- 31 F5.3 mag R-I Cousins Rc-Ic colour index from literature
33- 36 I4 K Teff Effective temperature
38- 40 I3 K e_Teff rms uncertainty on Teff
42 I1 --- r_Teff Reference for Teff (1)
44- 49 A6 --- SpType MK spectral type
51- 56 F6.2 mas plx ?=- Parallax from HIP (Cat. I/239)
58- 62 F5.2 mas e_plx ? rms uncertainty on Plx
64- 67 F4.2 mag VMAG ? Absolute V magnitude
69- 72 F4.2 mag e_VMAG ? rms uncertainty on VMAG
74- 77 F4.2 Rsun R* ?=- Stellar radius
79- 82 F4.2 Rsun e_R* ?=- rms uncertainty on R*
84- 86 I3 --- S/NH ? HARPS@5000 signal-to-noise ratio of the
best spectrum
88- 90 I3 --- S/NS ? SOPHIE signal-to-noise ratio of the
best spectrum
91- 92 A2 --- n_S/NS [HR HE] SOPHIE mode (resolutions are
75000 for HR mode and 40000 for HE mode)
94- 96 I3 --- S/NE ? ELODIE signal-to-noise ratio of the
best spectrum
98-100 I3 --- S/NU ? UVES@5000 signal-to-noise ratio of the
best spectrum
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Note (1): References for Teff as follows:
1 = Soubiran et al. (2010A&A...515A.111S 2010A&A...515A.111S, Cat. B/pastel)
2 = Ammons et al. (2006ApJ...638.1004A 2006ApJ...638.1004A, Cat. V/136)
3 = Teff calculated used the formulae of Ramirez & Melendez
(2005ApJ...626..465R 2005ApJ...626..465R)
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Name Star name
12- 17 F6.4 0.1nm FWHMH ?=- HARPS FWHM
19- 24 F6.4 0.1nm e_FWHMH ? rms uncertainty on HARPS FWHM
26- 31 F6.4 0.1nm FWHMS ?=- SOPHIE FWHM
33- 38 F6.4 0.1nm e_FWHMS ? rms uncertainty on SOPHIE FWHM
40 A1 --- l_vsiniH Limit flag for vsiniH
41- 44 F4.2 km/s vsiniH ?=- HARPS vsini
46 A1 --- l_vsiniS Limit flag for vsiniS
47- 50 F4.2 km/s vsiniS ?=- SOPHIE vsini
52- 54 F3.1 km/s vsini1 ? Other authors vsini (1)
56- 59 F4.1 km/s vsini2 ? Other authors vsini (1)
62 A1 --- l_vsini Limit flag for vsiniS
63- 66 F4.2 km/s vsini ?=- Adopted vsini
70 A1 --- l_P/sini Limit flag on P/sini
71- 76 F6.2 d P/sini ?=- Rotation period
77 A1 --- r_P/sini [v] value for P/sini from Vaughan et al.
(1981ApJ...250..276V 1981ApJ...250..276V)
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Note (1): We also give the measurements from other sources:
* Vaughan et al. 1981ApJ...250..276V 1981ApJ...250..276V;
* Benz & Mayor 1984A&A...138..183B 1984A&A...138..183B;
* Saar & Osten 1997MNRAS.284..803S 1997MNRAS.284..803S).
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History:
From electronic version of the journal
References:
Houdebine & Doyle, Paper I 1994A&A...289..169H 1994A&A...289..169H
Houdebine & Doyle, Paper II 1994A&A...289..185H 1994A&A...289..185H
Houdebine et al., Paper III 1995A&A...294..773H 1995A&A...294..773H
Houdebine & Doyle, Paper IV 1995A&A...302..861H 1995A&A...302..861H
Houdebine et al., Paper V 1996A&A...305..209H 1996A&A...305..209H
Houdebine & Stempels, Paper VI 1997A&A...326.1143H 1997A&A...326.1143H
Houdebine, Paper VII 2008MNRAS.390.1081H 2008MNRAS.390.1081H
Houdebine et al., Paper VIII 2009A&A...503..929H 2009A&A...503..929H
Houdebine, Paper IX 2010A&A...509A..65H 2010A&A...509A..65H
Houdebine, Paper X 2010MNRAS.403.2157H 2010MNRAS.403.2157H, Cat. J/MNRAS/403/2157
Houdebine, Paper XII 2009MNRAS.397.2133H 2009MNRAS.397.2133H
Houdebine et al., Paper XIII 2009MNRAS.400..238H 2009MNRAS.400..238H
Houdebine, Paper XIV 2010MNRAS.407.1657H 2010MNRAS.407.1657H, Cat. J/MNRAS/407/1657
Houdebine, Paper XV 2011MNRAS.411.2259H 2011MNRAS.411.2259H
(End) Patricia Vannier [CDS] 06-Apr-2012