J/ApJ/788/81 BANYAN III. RVel and rotation of low-mass stars (Malo+, 2014)
BANYAN.
III. Radial velocity, rotation, and X-ray emission of low-mass star candidates
in nearby young kinematic groups.
Malo L., Artigau E., Doyon R., Lafreniere D., Albert L., Gagne J.
<Astrophys. J., 788, 81 (2014)>
=2014ApJ...788...81M 2014ApJ...788...81M
ADC_Keywords: Rotational velocities ; Radial velocities ; X-ray sources ;
Photometry, infrared; Proper motions ; Associations, stellar
Keywords: solar neighborhood; stars: low-mass; stars: pre-main sequence;
techniques: spectroscopic
Abstract:
Based on high-resolution spectra obtained with PHOENIX at Gemini
South, CRIRES at VLT-UT1, and ESPaDOnS at the Canada-France-Hawaii
Telescope, we present new measurements of the radial and projected
rotational velocities of 219 low-mass stars. The target likely
membership was initially established using the Bayesian analysis tool
recently presented in Malo et al. (Paper I: 2013, J/ApJ/762/88),
taking into account only the position, proper motion, and photometry
of the stars to assess their membership probability. In the present
study, we include radial velocity as an additional input to our
analysis, and in doing so we confirm the high membership probability
for 130 candidates: 27 in β Pictoris, 22 in Tucana-Horologium, 25
in Columba, 7 in Carina, 18 in Argus and 18 in AB Doradus, and 13 with
an ambiguous membership. Our analysis also confirms the membership of
57 stars proposed in the literature. A subsample of 16 candidates was
observed at 3 or more epochs, allowing us to discover 6 new
spectroscopic binaries. The fraction of binaries in our sample is 25%,
consistent with values in the literature. Of the stars in our sample,
20% show projected rotational velocities (vsin i) higher than 30 km/s
and therefore are considered as fast rotators. A parallax and other
youth indicators are still needed to fully confirm the 130 highly
probable candidates identified here as new bona fide members. Finally,
based on the X-ray emission of bona fide and highly probable group
members, we show that for low-mass stars in the 12-120Myr age range,
the X-ray luminosity is an excellent indicator of youth and better
than the more traditionally used RXparameter, the ratio of X-ray to
bolometric luminosity.
Description:
Observations were performed using two near-infrared spectrographs,
PHOENIX (at Gemini-South; in 2009 and 2010) and CRIRES (at VLT-UT1),
and one optical spectrograph, ESPaDOnS (at CFHT; starting in 2010).
File Summary:
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FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table2.dat 63 403 Individual radial and projected rotational
velocity measurements for 219 stars
table7.dat 227 187 Properties of candidate members of young
kinematic groups
table8.dat 172 187 Membership probabilities of all candidates
refs.dat 83 59 References
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See also:
B/eso : ESO Science Archive Catalog (ESO, 1991-2015)
B/cfht : Log of CFHT Exposures (CADC, 1979-)
III/272 : RAVE 4th data release (Kordopatis+, 2013)
III/257 : RAVE second data release (Zwitter+, 2008)
J/ApJ/798/73 : BANYAN All-Sky Survey. V. Nearby YMGs (Gagne+, 2015)
J/AJ/147/85 : Solar neighborhood. XXXIII. 45 M dwarfs (Riedel+, 2014)
J/ApJ/783/121 : BANYAN II. Nearby young assoc. cand. members (Gagne+, 2014)
J/ApJS/208/9 : Intrinsic colors and temperatures of PMS stars (Pecaut+, 2013)
J/AJ/145/102 : Spectro of bright M dwarfs in the northern sky (Lepine+, 2013)
J/ApJ/762/88 : Young stellar kinematic group candidate members (Malo+, 2013)
J/ApJ/758/56 : Young M dwarfs within 25pc. II. Kinematics (Shkolnik+, 2012)
J/A+A/546/A61 : Radial velocities for XHIP catalogue (de Bruijne+, 2012)
J/ApJ/754/44 : The AstraLux Large M-dwarf Survey (Janson+ 2012)
J/AJ/144/8 : Spectroscopy of ∼100 G/K/M-type Sco-Cen members (Song+, 2012)
J/MNRAS/421/3189 : CaII and Hα data for dK5/dM4 stars (Houdebine, 2012)
J/AJ/143/93 : Rotational velocities in early-M stars (Reiners+, 2012)
J/AJ/143/80 : Low-mass stars of beta Pic & AB Dor groups (Schlieder+, 2012)
J/AJ/142/138 : All-sky catalog of bright M dwarfs (Lepine+, 2011)
J/A+A/520/A15 : RACE-OC project: YSOs within 100pc (Messina+, 2010)
J/AJ/140/119 : βPic and AB Dor moving groups members (Schlieder+, 2010)
J/A+A/514/A97 : High-res. spectra of late-type stars (Lopez-Santiago+ 2010)
J/A+A/508/833 : SACY III. Li abundances (da Silva+, 2009)
J/ApJ/704/975 : Rotational velocities for M dwarfs (Jenkins+, 2009)
J/ApJ/699/649 : Young M dwarfs within 25pc. I. (Shkolnik+, 2009)
J/A+A/499/129 : Old MS stars in young moving groups (Lopez-Santiago+, 2009)
J/ApJS/181/444 : RASS/SDSS X-emitting stars (Agueros+, 2009)
J/MNRAS/389/585 : Fundamental parameters of M dwarfs (Casagrande+, 2008)
J/A+A/460/695 : Associations Containing Young stars (Torres+, 2006)
J/AJ/131/3016 : Low-mass objects in Upper Scorpius (Slesnick+, 2006)
J/A+A/433/151 : Spectrocopic data on ROSAT late-type stars (Zickgraf+, 2005)
J/AJ/126/3007 : Spectroscopy of faint red NLTT dwarfs (Reid+, 2003)
J/ApJS/141/503 : Radial Velocities for 889 late-type stars (Nidever+, 2002)
J/AJ/123/3356 : Palomar/MSU nearby star spectrosc. survey III. (Gizis+, 2002)
J/MNRAS/328/45 : Late-type stars members of young groups (Montes+, 2001)
J/A+A/331/581 : Rotation and activity in field M dwarfs (Delfosse+ 1998)
J/A+A/325/159 : Companions to M dwarfs within 5pc (Leinert+ 1997)
http://www.rave-survey.org/ : RAVE - the Radial Velocity Experiment home page
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 17 A17 --- 2MASS 2MASS identifier (JHHMMSSss+DDMMSSs)
18- 19 A2 --- m_2MASS Multiple component (1)
22- 31 A10 "DD/MM/YYYY" Date Date of the observation
33- 40 A8 --- Inst Instrument used: PHOENIX, CRIRES or ESPADONS
42- 46 F5.1 km/s RVel [-54.1/117] Radial velocity
48- 50 F3.1 km/s e_RVel [0.2/8] Uncertainty in RVel
52 A1 --- l_vsini Limit flag on vsini
53- 58 F6.1 km/s vsini [1.9/117.2] Projected rotational velocity
60- 63 F4.1 km/s e_vsini [0.9/17]? Uncertainty in vsini
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Note (1): J10120908-312445124b has been replaced by J10120908-3124451b and the
two J14252913-411332313 by J14252913-4113323 at CDS.
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table7.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 29 A29 --- Assoc Nearby Young Association full name
31- 47 A17 --- 2MASS 2MASS identifier (JHHMMSSss+DDMMSSs)
49- 53 F5.2 mag Icmag [8.5/12.6] DENIS catalog Ic-band magnitude (1)
55- 58 F4.2 mag e_Icmag [0/0.2] Uncertainty in Icmag
60- 61 A2 --- r_Icmag Source of Icmag (see refs.dat file)
63- 67 F5.2 mag Jmag [7.2/11] 2MASS J band magnitude
69- 72 F4.2 mag e_Jmag [0.02/0.04] Uncertainty in Jmag
74- 79 F6.1 mas/yr pmRA [-482/315] Proper motion along RA
times cos(DE) (3)
81- 83 F3.1 mas/yr e_pmRA [0/9.1] Uncertainty in pmRA
85- 86 A2 --- r_pmRA Source of proper motion (see refs.dat file)
88- 93 F6.1 mas/yr pmDE [-239/387.1] Proper motion along DE (3)
95- 98 F4.1 mas/yr e_pmDE [0/32] Uncertainty in pmDE
100-101 A2 --- r_pmDE Source of proper motion (see refs.dat file)
103-112 A10 --- SpT MK spectral type (4)
114-119 F6.2 [mW/m2] logfX [-13/-7]? Log ROSAT X-ray flux; erg/s/cm2 (5)
121-124 F4.1 0.1nm Ha [-2/60]? Hα equivalent width (Å) (6)
126-127 A2 --- r_Ha Source of Ha (see refs.dat file)
129 A1 --- l_Li Limit flag on Li
130-132 I3 10-13m Li [0/710]? Lithium equivalent width (mÅ) (7)
134-135 A2 --- r_Li Source of Li (see refs.dat file)
139 A1 --- l_vsini Limit flag on vsini
140-144 F5.1 km/s vsini [2.6/117.2]? Projected rotational velocity (8)
146-149 F4.1 km/s e_vsini [0.2/13.1]? Uncertainty in vsini
151-152 A2 --- r_vsini Source of vsini (see refs.dat file)
154-158 F5.1 km/s RVm [-26.3/33.4] Measured Radial Velocity (9)
160-162 F3.1 km/s e_RVm [0/8] Uncertainty in RVm
164-165 A2 --- r_RVm Source of RVm (see refs.dat file)
167-171 F5.1 km/s RVp [-24.1/31.3]? Predicted Radial Velocity (10)
173-175 F3.1 km/s e_RVp [0.5/2.1]? Uncertainty in RVp
177-180 F4.1 pc dpi [11.8/96.2]? Trigonometric distance (11)
182-185 F4.1 pc e_dpi [0.4/12]? Uncertainty in dpi
187-188 A2 --- r_dpi Source of dpi (see refs.dat file)
190-191 I2 pc ds [3/90]? Statistical distance (10)
193-194 I2 pc e_ds [1/13]? Uncertainty in ds
196-199 F4.1 % P [0/100]? Membership probability (12)
201 A1 --- f_P [l] probable binary (13)
203-206 F4.1 % Pv [89.5/100]? Membership probability (14)
208 A1 --- f_Pv [l] probable binary (13)
210-214 F5.2 [10-7W] logLx [28/31]? Log ROSAT X-ray luminosity; erg/s (15)
216-219 F4.2 [10-7W] e_logLx [0.1/0.4]? Uncertainty in logLx
221-227 A7 --- Ref Reference(s) (see refs.dat file)
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Note (1): Unless stated otherwise. DENIS catalog (Epchtein et al. 1997,
B/denis).
Note (3): From UCAC3 catalog (Zacharias et al. 2009, I/315), unless stated
otherwise.
Note (4): Spectral type with asterisk is for the whole unresolved system.
Note (5): Calculated from Riaz et al. (see Section 5; 2006, J/AJ/132/866).
Note (6): From Riaz et al. (2006, J/AJ/132/866), unless stated otherwise.
Note (7): From Mentuch et al. (2008ApJ...689.1127M 2008ApJ...689.1127M), unless stated otherwise.
Note (8): From this work, unless stated otherwise.
Note (9): From Montes et al. (2001, J/MNRAS/328/45), unless stated otherwise.
Note (10): Derived by our analysis (see Malo et al. (2013, J/ApJ/762/88)
Section 5).
Note (11): From van Leeuwen (2007, I/311), unless stated otherwise.
Note (12): Without considering the RV or parallax information.
Note (13):
l = Membership probability for which the binary hypothesis is higher.
Note (14): With considering the RV (see Malo et al. 2013 (J/ApJ/762/88)
Section 5).
Note (15): Calculated from
http://heasarc.gsfc.nasa.gov/W3Browse/all/rassdsstar.html.
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Byte-by-byte Description of file: table8.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 17 A17 --- 2MASS 2MASS identifier (JHHMMSSss+DDMMSSs)
19- 22 F4.1 % bPicP [0/100] βPic MG membership probability
24 A1 --- f_bPicP [b] binary hypothesis probable (1)
26- 29 F4.1 % bPicP1 [0/100] βPic MG membership probability (2)
31 A1 --- f_bPicP1 [b] binary hypothesis probable (1)
33- 36 F4.1 % bPicP3 [0/100]? βPic MG membership probability (3)
38 A1 --- f_bPicP3 [b] binary hypothesis probable (1)
40- 43 F4.1 % TWAP [0/100] TW Hya assoc. membership probability
45 A1 --- f_TWAP [b] binary hypothesis probable (1)
47- 50 F4.1 % TWAP1 [0/100] TW Hya assoc. membership probability (2)
52 A1 --- f_TWAP1 [b] binary hypothesis probable (1)
54- 57 F4.1 % TWAP3 [0/100]? TW Hya membership probability (3)
59 A1 --- f_TWAP3 [b] binary hypothesis probable (1)
61- 64 F4.1 % THAP [0/100] Tuc-Hor Assoc. membership probability
66 A1 --- f_THAP [b] binary hypothesis probable (1)
68- 71 F4.1 % THAP1 [0/100] Tuc-Hor membership probability (2)
73 A1 --- f_THAP1 [b] binary hypothesis probable (1)
75- 77 F3.1 % THAP3 [0/100]? Tuc-Hor membership probability (3)
79- 82 F4.1 % ColP [0/100] Columba membership probability
84 A1 --- f_ColP [b] binary hypothesis probable (1)
86- 89 F4.1 % ColP1 [0/100] Columba membership probability (2)
91 A1 --- f_ColP1 [b] binary hypothesis probable (1)
93- 96 F4.1 % ColP3 [0/100]? Columba membership probability (3)
98 A1 --- f_ColP3 [b] binary hypothesis probable (1)
100-103 F4.1 % CarP [0/100] Car asspc. membership probability
105 A1 --- f_CarP [b] binary hypothesis probable (1)
107-110 F4.1 % CarP1 [0/100] Car asspc. membership probability (2)
112 A1 --- f_CarP1 [b] binary hypothesis probable (1)
114-116 F3.1 % CarP3 [0/100]? Car asspc. membership probability (3)
118-121 F4.1 % ArgP [0/100] Argus Assoc. membership probability
123 A1 --- f_ArgP [b] binary hypothesis probable (1)
125-128 F4.1 % ArgP1 [0/100] Argus Assoc. membership probability (2)
130 A1 --- f_ArgP1 [b] binary hypothesis probable (1)
132-135 F4.1 % ArgP3 [0/100]? Argus Assoc. membership probability (3)
137 A1 --- f_ArgP3 [b] binary hypothesis probable (1)
139-142 F4.1 % ABDorP [0/100] AB Dor MG membership probability
144 A1 --- f_ABDorP [b] binary hypothesis probable (1)
146-149 F4.1 % ABDorP1 [0/100] AB Dor MG membership probability (2)
151 A1 --- f_ABDorP1 [b] binary hypothesis probable (1)
153-156 F4.1 % ABDorP3 [0/100]? AB Dor MG membership probability (3)
158 A1 --- f_ABDorP3 [b] binary hypothesis probable (1)
160-163 F4.1 % FldP [0/34] Field membership probability
165-167 F3.1 % FldP1 [0/10] Field membership probability (2)
169-172 F4.1 % FldP3 [0/100]? Field membership probability (3)
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Note (1):
b = Membership probability (P or P1 or P3) for which the binary
hypothesis has a higher probability.
Note (2): Including radial velocity information.
Note (3): Including radial velocity and parallax information.
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 A2 --- Ref Reference code
4- 22 A19 --- BibCode Bibcode
24- 42 A19 --- Aut Author's name(s)
44- 83 A40 --- Com Comment
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History:
From electronic version of the journal
References:
Malo et al. Paper I. 2013ApJ...762...88M 2013ApJ...762...88M Cat. J/ApJ/762/88
Gagne et al. Paper II. 2014ApJ...783..121G 2014ApJ...783..121G Cat. J/ApJ/783/121
Malo et al. Paper IV. 2014ApJ...792...37M 2014ApJ...792...37M
Gagne et al. Paper V. 2015ApJ...798...73G 2015ApJ...798...73G Cat. J/ApJ/798/73
Artigau et al. Paper VI. 2015ApJ...806..254A 2015ApJ...806..254A
Gagne et al. Paper VII. 2015ApJS..219...33G 2015ApJS..219...33G Cat. J/ApJS/219/33
Boucher et al. Paper VIII. 2016ApJ...832...50B 2016ApJ...832...50B
Gagne et al. Paper IX. 2017ApJS..228...18G 2017ApJS..228...18G
Desrochers et al. Paper X. 2018ApJ...852...55D 2018ApJ...852...55D
Gagne et al. Paper XI. 2018ApJ...856...23G 2018ApJ...856...23G Cat. J/ApJ/856/23
Gagne et al. Paper XII. 2018ApJ...860...43G 2018ApJ...860...43G Cat. J/ApJ/860/43
Gagne et al. Paper XIII. 2018ApJ...862..138G 2018ApJ...862..138G
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 21-May-2015