J/A+AS/138/87 UBVRI photometry of EUV stellar sources (Cutispoto+ 1999)
Classification of EUV stellar sources detected by the ROSAT WFC
I. Photometric and radial velocity studies
Cutispoto G., Pastori L., Tagliaferri G., Messina S., Pallavicini R.,
Rodono M.
<Astron. Astrophys. Suppl. Ser. 138, 87 (1999)>
=1999A&AS..138...87C 1999A&AS..138...87C (SIMBAD/NED BibCode)
ADC_Keywords: Radio sources ; Ultraviolet ; Photometry, UBVRI ;
Radial velocities
Keywords: stars: activity - stars: late-type - stars: pre-main sequence -
stars: variables - X-rays: stars
Abstract:
We present the results of high-precision UBV(RI)c photometric
observations and of spectroscopic radial velocity measurements
obtained at the European Southern Observatory for a sample of 51 cool
stars detected in the EUV by the ROSAT Wide Field Camera (WFC). Using
also recent results from HIPPARCOS, we infer spectral types and
investigate the single or binary nature of the sample stars. Optical
variability, with periods in the 0.4-13 day range, has been detected
for the first time in 15 of these stars.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 98 50 UBVRI maximum luminosity and colors
table2.dat 69 50 Observational data
table5.dat 50 142 Heliocentric radial velocities
tables.tex 153 444 LaTeX version of tables 1-5
lcurves.dat 67 555 UBVRI light curves
dcurves.dat 87 441 Differential magnitudes
average.dat 92 35 Average differential magnitudes
phot.dat 80 75 Comparison stars UBVRI photometry
figures.dat 80 82 Figure captions
fig/* . 28 Figures (1 to 27)
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See also:
J/A+AS/119/281 : Long-term monitoring of active stars. V. (Cutispoto, 1996)
J/A+AS/121/369 : Long-term monitoring of active stars. VI. (Cutispoto, 1997)
J/A+AS/127/207 : Long-term monitoring of active stars. VII. (Cutispoto 1998)
J/A+AS/131/321 : Long-term monitoring of active stars. VIII. (Cutispoto 1998)
J/A+AS/115/41 : UBV(RI) photometry of cool stars (Cutispoto+, 1996)
J/MNRAS/260/77 : ROSAT Wide Field Camera EUV Bright Sources (Pounds+ 1993)
IX/10 : ROSAT All-Sky Bright Source Catalogue (1RXS) (Voges+ 1996)
IX/11 : ROSAT PSPC Source Catalog (Voges+ 1994)
IX/12 : The WGACAT version of ROSAT sources (White+ 1995)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Name Star name
12- 16 F5.2 mag Vmag V magnitude at maximum luminosity
17 A1 --- n_Vmag [*] Note on Vmag (1)
19- 22 F4.2 mag U-B ? U-B colour index at maximum luminosity
24- 27 F4.2 mag B-V B-V colour index at maximum luminosity
28 A1 --- u_B-V Uncertainty flag on B-V
30- 33 F4.2 mag V-R ? V-R colour index at maximum luminosity
35- 38 F4.2 mag V-I ? V-I colour index at maximum luminosity
39 A1 --- u_V-I Uncertainty flag on V-I
41- 43 A3 --- Epoch Epoch of observation code (2)
45- 64 A20 --- spType Spectral Type inferred from the colors
66 A1 --- l_d(H) Limit flag on d(H)
67- 69 I3 mas d(H) Hipparcos (Cat. I/239) parallax
70 A1 --- u_d(H) Uncertainty flag on d(H)
72 A1 --- l_d(ph) Limit flag on d(ph)
73- 75 I3 mas d(ph) Photometric parallax
76 A1 --- u_d(ph) Uncertainty flag on d(ph)
79- 80 I2 h RAh Right Ascension J2000 (hours) (3)
82- 83 I2 min RAm Right Ascension J2000 (minutes) (3)
85- 88 F4.1 s RAs Right Ascension J2000 (seconds) (3)
90 A1 --- DE- Declination J2000 (sign) (3)
91- 92 I2 deg DEd Declination J2000 (degrees) (3)
94- 95 I2 arcmin DEm Declination J2000 (minutes) (3)
97- 98 I2 arcsec DEs Declination J2000 (seconds) (3)
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Note (1): *: Vmag from HIPPARCOS (Cat. I/239) catalogue or from SIMBAD
Note (2): Epoch: N93: 19 Nov - 03 Dec 1993
N94: 24 Nov - 04 Dec 1994
J95: 15 Jan - 28 Jan 1995
A95: 19 Aug - 03 Sep 1995
D96: 03 Dec - 30 Dec 1996
P1 : Cutispoto, 1991A&AS...89..435C 1991A&AS...89..435C
P2 : Cutispoto, 1990A&AS...84..397C 1990A&AS...84..397C
P3 : Cutispoto, 1996, Cat. J/A+AS/115/41
P4 : Cutispoto, 1998, Cat. J/A+AS/131/321
P5 : Cutispoto, 1997IBVS.4419....1C 1997IBVS.4419....1C
Note (3): Position added at CDS from SIMBAD data-base.
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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
11 A1 --- n_Name [bd] Note on Name (1)
13- 21 A9 --- VName Variable name
23- 27 F5.2 mag Vmaxl Maxixmun V magnitude reported in the literature
28 A1 --- n_Vmaxl [c] Note on Vmaxl (2)
30- 34 F5.2 mag Vmax ? Observed maximum V magnitude
35 A1 --- n_Vmax [c] Note on Vmax (2)
37- 40 F4.2 mag DVmag ? Observed amplitude of variation
42 A1 --- l_Per Limit flag on Per
43- 52 F10.7 d Per ? Photometric or orbital period
53 A1 --- n_Per [*] Note on Per (3)
55 A1 --- l_vsini Limit flag on vsini
56- 57 I2 km/s vsini ? Observed rotational velocity
59 I1 km/s e_vsini ? rms uncertainty on vsini
60 A1 --- n_vsini [av] Note on vsini (4)
62- 64 I3 0.1pm EW ? Measured Ca I 6717.7Å equivalent width
65 A1 --- n_EW2 [+]
66- 68 I3 0.1pm EW2 ? Second Ca I equivalent width
69 A1 --- n_EW [e] Note on EW (5)
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Note (1): b: the photometry refers to the whole system, the vsini only to the
primary component
d: the photometry refers to the whole system, the vsini only to the
secondary component
Note (2): c: SAO 232842 is included
Note (3): *: data from the literature, else measured by us
Note (4): a: both components have vsini>60
v: variable
Note (5): e: used for the Ca I 6717.7Å vs. B-V calibration
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Name Star name
14- 25 F12.4 d HJD Heliocentric Julian date
27- 32 F6.1 km/s HRV Heliocentric radial velocity
34- 37 F4.1 km/s e_HRV rms uncertainty on HRV
39- 40 I2 --- Nline Number of line used
42- 45 A4 --- SR Spectral region
47- 50 A4 --- Notes Notes (1)
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Note (1): SB1, SB2: spectroscopic binary
C: constant radial velocity
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Byte-by-byte Description of file: lcurves.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Name Star name (1)
12- 23 F12.4 d HJD Heliocentric Julian date
25- 31 F7.5 --- Phase ? [0/1] Phase
32- 37 F6.3 mag Vmag V magnitude
39- 44 F6.3 mag U-B ? U-B colour index
47- 51 F5.3 mag B-V ? B-V colour index
54- 58 F5.3 mag V-R V-R colour index
61- 65 F5.3 mag V-I ? V-I colour index
67 A1 --- Note [EF] Note
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Note (1): Average photometry of HD 24916:
V=8.030(.005), U-B=1.029(.009), B-V=1.126(.005),
V-R=0.680(.004), V-I=1.297(.007)
For HD 37572 (= UY Pic):
Phases are reckoned from the ephemerid JDo=2449700.0+4.52xE
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Byte-by-byte Description of file: dcurves.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Name Star name
12- 21 A10 --- Comp1 First comparison star name
22 A1 --- --- [-]
23- 32 A10 --- Comp2 Second comparison star name
34- 45 F12.4 d HJD Heliocentric Julian date
48- 52 F5.4 --- Phase ? [0/1] Phase (1)
54- 59 F6.3 mag DUmag ? Differential U magnitude (Comp1-Comp2)
61- 66 F6.3 mag DBmag ? Differential B magnitude (Comp1-Comp2)
68- 73 F6.3 mag DVmag ? Differential V magnitude (Comp1-Comp2)
75- 80 F6.3 mag DRmag ? Differential R magnitude (Comp1-Comp2)
82- 87 F6.3 mag DImag ? Differential I magnitude (Comp1-Comp2)
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Note (1): Phases computed using the ephemerid:
HD 10216 - HD 10002 : HJD=2449681.1627+0.476533xE
HD 273975 - HD 35471 : HJD=2449950.0+0.690(.004)xE
HD 36379 - HD 36561 : HJD=2449730.0+1.31xE(.01)
HD 44019 - HD 44517 : HJD=2449310.0+1.15(.01)xE
HD 49947 - HD 45538 : HJD=2449730.0+2.65(.04)xE
HD 78564 - HD 78429 : HJD=2449732.0+0.840(.004)xE
HD 140722 - HD 139696 : HJD=2449730.0+2.72(.05)xE
HD 157881 - HD 156893 : HJD=2449950.0+0.655xE
HD 196573 - HD 196124 : HJD=2449950.279+0.52175xE (22)
HD 40347 - HD 41433 : HJD=2449311.5+3.8xE
BD+12 90 - BD+08 107 : HJD=2449950.0+0.2937xE
SAO 111121-SAO 111207 : HJD=2449950.0+0.5473(.0010)xE
SAO 170680- HD 37653 : HJD=2450420.0+1.78(.01)xE
HD 44007 - HD 43306 : HJD=2449314.93+4.977xE
HD 35471 - HD 36702 : HJD=2450422.0+1.422(.007)xE
HD 39062 - HD 37991 : HJD=2450420.0+1.87(.02)xE
Phases reckoned from the ephemerid:
HD 42683 - HD 41700 : HJD=2449732.0+3.3(.1)xE
HD 44007 - HD 43306 : JDo=2449700.0+7.2(.2)xE
HD 49947 - HD 46730 : JDo=2449700.0+2.60(.04)xE
HD 71622 - HD 71334 : JDo=2449732.0+1.35(.01)xE
HD 76927 - HD 75687 : JDo=2450435.5+0.4085(.0011)xE
HD 94808 - HD 95741 : JDo=2449732.5+6.9(.3)xE
HD 128227 - HD 125881 : JDo=2449954.0+0.646(.003)xE
HD 140861 - HD 141702 : JDo=2449730.0+2.20(.03)xE
HD 143766 - HD 144253 : HJD=2449949.85+0.91(.01)xE
HD 197711 - HD 199014 : JDo=2449949.5+0.75xE
HD 62181 - HD 60779 : JDo=2449732.5+1.36(.01)xE
HD 874 - HD 1352 : JDo=2449900.0+1.820(.015)xE
Phases reckoned to the ephemeris:
BD+12 90 - BD+08 107 : HJD=2450421.5+2.24(.04)xE
SAO 170680- HD 37653 : HJD=2450421.5+1.90(.01)xE
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Byte-by-byte Description of file: average.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Name Star name
12- 21 A10 --- Comp1 First comparison star name
22 A1 --- --- [-]
23- 32 A10 --- Comp2 Second comparison star name
34- 39 F6.3 mag DUmag Average differential U magnitude (Comp1-Comp2)
41- 44 F4.3 mag e_DUmag rms uncertainty on Umag
46- 51 F6.3 mag DBmag Average differential B magnitude (Comp1-Comp2)
53- 56 F4.3 mag e_DBmag rms uncertainty on Bmag
58- 63 F6.3 mag DVmag Average differential V magnitude (Comp1-Comp2)
65- 68 F4.3 mag e_DVmag rms uncertainty on Vmag
70- 75 F6.3 mag DRmag Average differential R magnitude (Comp1-Comp2)
77- 80 F4.3 mag e_DRmag rms uncertainty on Rmag
82- 87 F6.3 mag DImag Average differential I magnitude (Comp1-Comp2)
89- 92 F4.3 mag e_DImag rms uncertainty on Imag
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Byte-by-byte Description of file: phot.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Comp Comparison star name
12- 16 F5.2 mag Umag U magnitude
18- 20 F3.2 mag e_Umag rms uncertainty on Umag
22- 26 F5.2 mag Bmag B magnitude
28- 30 F3.2 mag e_Bmag rms uncertainty on Bmag
32- 36 F5.2 mag Vmag V magnitude
38- 40 F3.2 mag e_Vmag rms uncertainty on vmag
42- 46 F5.2 mag Rmag R magnitude
48- 50 F3.2 mag e_Rmag rms uncertainty on Rmag
52- 55 F4.2 mag Imag I magnitude
57- 59 F3.2 mag e_Imag rms uncertainty on Imag
61- 64 F4.2 mag U-B U-B colour index
66- 69 F4.2 mag B-V B-V colour index
71- 74 F4.2 mag V-R V-R colour index
76- 79 F4.2 mag V-I V-I colour index
80 A1 --- n_Comp [*] *: Program star
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Byte-by-byte Description of file: figures.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Fig Figure number (postscript file in subdirectory
fig)
4- 13 A10 --- Name Star name
16-100 A85 --- Text Caption of the figure
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Acknowledgements: Giuseppe Cutispoto
(End) Patricia Bauer [CDS] 01-Jul-1999