J/ApJ/745/118 UCAC3 proper motion survey. II. -47<DEC<0° (Finch+, 2012)
UCAC3 proper motion survey.
II. Discovery of new proper motion stars in UCAC3 with 0.40"/yr>µ≥0.18"/yr
between declinations -47° and 00°.
Finch C.T., Zacharias N., Boyd M.R., Henry T.J., Hambly N.C.
<Astrophys. J., 745, 118 (2012)>
=2012ApJ...745..118F 2012ApJ...745..118F
ADC_Keywords: Stars, nearby ; Proper motions ; Surveys ; Photometry ;
Stars, distances
Keywords: astrometry - solar neighborhood - stars: distances -
stars: statistics - surveys
Abstract:
We present 474 new proper motion stellar systems (500 objects) in the
southern sky having no previously known components, with
0.40"/yr>µ≥0.18"/yr between declinations -47° and 0°. In
this second paper utilizing the U.S. Naval Observatory third CCD
Astrograph Catalog (UCAC3) we complete our sweep of the southern sky
for objects in the proper motion range targeted by this survey with R
magnitudes ranging from 9.80 to 19.61. The new systems contribute a
∼16% increase in the number of new stellar systems for the same region
of sky reported in previous SuperCOSMOS Research Consortium On Nearby
Stars (RECONS) surveys. Among the newly discovered stellar systems are
16 multiples, plus an additional ten components that are new common
proper motion companions to previously known objects. A comparison of
UCAC3 proper motions to those from Hipparcos, Tycho-2, Southern Proper
Motion, and SuperCOSMOS indicates that all proper motions are
consistent to ∼10mas/yr, with the exception of SuperCOSMOS. Distance
estimates are derived for all stellar systems having SuperCOSMOS Sky
Survey BJ, R59F, and IIVN plate magnitudes and Two Micron All
Sky Survey (2MASS) infrared photometry. We find five new red dwarf
systems estimated to be within 25pc. These discoveries support results
from previous proper motion surveys suggesting that more nearby
stellar systems are to be found, particularly in the fainter, slower
moving samples. In this second paper utilizing the UCAC3 we complete
our sweep of the southern sky for objects in the proper motion range
targeted by this survey with R magnitudes ranging from 9.80 to 19.61.
Description:
The USNO CCD Astrograph Catalog (UCAC) project finished observations
in late 2004 and has been producing astrometric catalogs since 2000
October.
UCAC3 (Zacharias et al. 2010, Cat I/315), released in 2009 August, is
the first in the series to contain coverage of the entire sky. UCAC3
also includes double star fitting and has a slightly deeper limiting
magnitude than UCAC2 due to a complete re-reduction of the pixel data.
In addition, data from the Two Micron All Sky Survey (2MASS) were used
in UCAC3 to probe for and reduce systematic errors in UCAC
observations, providing a greater number of reference stars to stack
up residuals as a function of many parameters, such as observing site
and exposure time. A detailed description of the astrometric
reductions of UCAC3 can be found in Finch et al. (2010AJ....139.2200F 2010AJ....139.2200F).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 129 500 New UCAC3 high proper motion systems between
declinations -47° and 0°
with 0.40"/yr>µ≥0.18"/yr
table4.dat 120 26 Common proper motion candidate systems
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See also:
I/317 : The PPMXL Catalog (Roeser+ 2010)
I/315 : UCAC3 Catalogue (Zacharias+ 2009)
II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
I/279 : Revised Luyten Half-Second Catalogue (Bakos+ 2002)
I/98 : NLTT Catalogue (Luyten, 1979)
I/112 : Lowell Proper Motion Survey - Southern Hemisphere (Giclas+ 1979)
J/AJ/142/10 : New proper motion stars 0.40"/yr>pm≥0.18"/yr (Boyd+, 2011)
J/AJ/140/844 : UCAC3 proper motion survey (Finch+, 2010)
J/MNRAS/397/1685 : Galactic plane IPHAS-POSSI PMs survey (Deacon+, 2009)
J/A+A/468/163 : Sample of low mass stars with mu>0.1"/yr (Deacon+, 2007)
J/AJ/133/2898 : New proper-motion stars (-90<DE←47) (Finch+, 2007)
J/A+A/435/363 : Southern Infrared Proper Motion Survey (Deacon+, 2005)
J/AJ/130/1658 : New high PM stars (-47<δ←00) (Subasavage+, 2005)
J/AJ/129/413 : New high proper motion stars (-90<DE←47) (Subasavage+, 2005)
J/A+A/421/763 : Liverpool-Edinburgh High PM Catalogue (Pokorny+, 2004)
J/ApJ/582/1011 : Revised NLTT Catalog (Salim+, 2003)
J/A+A/353/958 : New proper motions in 0<RA<7h, -63<DE←32° (Scholz+, 2000)
J/A+AS/139/25 : New PM stars -30<DE←5, 13h30m<RA<24 (Wroblewski+ 1999)
J/A+AS/105/179 : New proper-motion stars Dec←40, 16<RA<24h (Wroblewski+ 1994)
http://surveys.roe.ac.uk/ssa : SuperCOSMOS Science Archive
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- --- [UPM]
5- 13 A9 --- UPM Source name (HHMM-DDMMA; J2000)
14 A1 --- m_UPM [ABC] Multiplicity index on UPM name
15 A1 --- f_UPM [*] *:for systems estimated to be within 25pc
(originally listed in table 3)
17- 27 F11.7 deg RAdeg Right Ascension in decimal degrees (J2000)
29- 39 F11.7 deg DEdeg Declination in decimal degrees (J2000)
41- 46 F6.1 mas/yr pmRA [-276/260]? Proper motion along RA*cos(DE)
48- 53 F6.1 mas/yr pmDE [-263/255]? Proper motion along DE
55- 58 F4.1 mas/yr e_pmRA ? Uncertainty in pmRA
60- 63 F4.1 mas/yr e_pmDE ? Uncertainty in pmDE
65- 70 F6.3 mag BJmag [11.8/21]? SuperCOSMOS BJ plate magnitude
72- 77 F6.3 mag Rpmag ? SuperCOSMOS R59F plate magnitude
79- 84 F6.3 mag Ipmag ? SuperCOSMOS IIVN plate magnitude
86- 91 F6.3 mag Jmag ? 2MASS J band magnitude
93- 98 F6.3 mag Hmag ? 2MASS H band magnitude
100-105 F6.3 mag Ksmag [8/16]? 2MASS Ks band magnitude
107-112 F6.3 mag Rp-J ? The (R59F-J) color index
114-118 F5.1 pc Dist [13.2/574.5]? Estimated distance
119 A1 --- f_Dist [i] i: Indicates plate distance is incorrect
121-129 A9 --- Notes Additional note(s) (G1)
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 24 A24 --- Name1 Primary name
26- 31 F6.1 mas/yr pmRA1 [-207.4,186.9]?=- Proper motion along
RA(*cos(DE)) of primary
33- 38 F6.1 mas/yr pmDE1 [-233.8,164.7]?=- Proper motion along DE
40- 44 F5.1 pc Dist1 [0,175.5]?=- Distance of primary
46 A1 --- f_Dist1 [i] i: plate distance is incorrect
48- 71 A24 --- Name2 Secondary or Tertiary (for UPM 1226-3516C) name
73- 78 F6.1 mas/yr pmRA2 [-209.7,182.3]?=- Proper motion along
RA(*cos(DE)) of the secondary/tertiary
80- 85 F6.1 mas/yr pmDE2 [-204.9,163.2]?=- Proper motion along DE of
the secondary/tertiary
87- 91 F5.1 pc Dist2 [0,243.3]?=- Distance of secondary/tertiary
93- 96 F4.1 arcsec Sep [5.3,97] Separation relative to the primary
98-102 F5.1 deg theta [1.5,359.1] Position angle relative to
the primary
104-110 A7 --- Note Note(s) (G1)
112-120 A9 --- UPM System name (HHMM+DDMM; J2000);
column added by CDS
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Global note:
Note (G1): Note as follows:
a = Proper motions suspect.
b = Number of relations used for distance estimate <6: plate distance
less reliable.
c = SuperCOSMOS plate magnitudes suspect.
d = Common proper motion companion; see Table 4.
e = Not detected during automated search but noticed by eye during the
blinking process.
f = Subdwarf candidate selected from RPM diagram.
g = Possible NLTT star with a position difference >90" when compared
to UCAC3 position.
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History:
From electronic version of the journal
References:
Finch et al. Paper I. 2010AJ....140..844F 2010AJ....140..844F Cat. J/AJ/140/844
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 30-Jul-2013