J/PASJ/61/97 Proper motions with Subaru SDF (Richmond+, 2009)
Proper motions with Subaru.
I. Methods and a first sample in the Subaru Deep Field.
Richmond M.W., Morokuma T., Doi M., Komiyama Y., Yasuda N., Okamura S.,
Gal-Yam A.
<Publ. Astron. Soc. Jap., 61, 97-107 (2009)>
=2009PASJ...61...97R 2009PASJ...61...97R
ADC_Keywords: Stars, nearby ; Photometry, infrared ; Proper motions
Keywords: Galaxy: kinematics and dynamics - Galaxy: structure -
stars: kinematics
Abstract:
We search for stars with proper motions in a set of twenty deep Subaru
images, covering about 0.28 square degrees to a depth of i'∼25,
taken over a span of six years. In this paper, we describe in detail
our reduction and techniques to identify moving objects. We present a
first sample of 99 stars with motions of high significance, and
discuss briefly the populations from which they are likely drawn.
Based on photometry and motions alone, we expect that 9 of the
candidates may be white dwarfs. We also find a group of stars which
may be extremely metal-poor subdwarfs in the halo.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 28 20 Observations of the SDF in i'-band
table4.dat 96 105 First sample of proper motion candidates in the SDF
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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 "YYYY/MM/DD" Obs.Date Observation date
11 A1 --- m_Obs.Date Multiplicity index on Obs.Date
13- 22 F10.2 d JD Julian date
24- 28 I5 s ExpTime Exposure time
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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- 5 A5 --- --- [SDFPM]
7- 22 A16 --- SDFPM SDFPM designation (JHHMMSS.s+DDMMSS)
24- 32 F9.5 deg RAdeg Right ascension in decimal degrees
(Eq=J2000, Ep=2007.13)
34- 42 F9.5 deg DEdeg Declination in decimal degrees
(Eq=J2000, Ep=2007.13)
44- 49 F6.3 mag Vmag V magnitude (1)
51- 56 F6.3 mag Rcmag Rc magnitude (1)
58- 63 F6.3 mag i'mag i' magnitude (1)
65- 70 F6.3 mag z'mag z' magnitude (1)
72- 77 F6.3 arcsec/yr pmRA Proper motion along RA
79- 83 F5.3 arcsec/yr e_pmRA rms uncertainty in pmRA
85- 90 F6.3 arcsec/yr pmDE Proper motion along DE
92- 96 F5.3 arcsec/yr e_pmDE rms uncertainty in pmDE
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Note (1): Corrected isophotal magnitudes from catalogs of Kashikawa et al.
(2004PASJ...56.1011K 2004PASJ...56.1011K).
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 01-Sep-2009