I/316 Lowell GR* red stars (Giclas+ 1972-1978)
Lowell GR* red stars
Giclas H.L., Burnham R., Thomas N.G.
<Lowell Obs. Bull. 7, 217 (1972); 8, 9 (1975); 8, 51 (1978)>
=1972LowOB...7..217G 1972LowOB...7..217G
=1975LowOB...8....9G 1975LowOB...8....9G
=1978LowOB...8...51G 1978LowOB...8...51G
ADC_Keywords: Stars, late-type
Description (B. Skiff):
This file shows accurate coordinates for the ∼500 red stars found by
Giclas et al. near the south galactic pole. This was part of a general
survey of large proper motion stars. In 2002 August I sent Gerard
Jasniewicz corrections for the first batch of 47 stars, mainly just to
see for myself what sorts of stars are involved. These 47 stars were
observed photoelectrically by Warren (1976MNRAS.176..667W 1976MNRAS.176..667W), who
obtained UBV photometry. Although every star was a dwarf, they were
not extraordinarily red, but merely garden-variety late-K and early-M
dwarfs. Gerard corrected all those entries in SIMBAD, and the UBV data
are linked.
I have now gone through the entire list and show improved positions
below. For most stars UCAC3 positions were adopted. In this part of
the sky UCAC3 draws from both the Schmidt plate-scans and the Yale SPM
series as well as the UCAC astrograph series. The multiple epochs mean
the positions and proper motions for the fainter stars are usually the
best ones. There are still a few where the motion is forced to zero or
is blank, and UCAC2, 2MASS, or other source is used, as specified in
the column 's' following the position.
I show V magnitudes for all the stars. For stars brighter than between
V = 14.5 and 15.0, the ASAS-3 is preferred. For the fainter stars this
is merely average of the GSC-2.3 blue and red magnitudes. Where there
is overlap, the naive b+r/2 from the Schmidt plates matches ASAS-3 to
within 0.1 mag usually, and only sometimes differs by as much as 0.3
mag.
Stars with motion >0".15/year are flagged 'lg pm'
(large proper motion).
In identifying the stars, I also found a substantial number of
common-motion pairs, which have all been sent to Brian Mason (USNO)
for possible inclusion in the WDS.
I noticed a few stars whose 2MASS J-K colors are >0.9mag; these must
be late-K/early-M giants --- interesting in themselves, since at Vmag
15 they are ∼10 kpc out in the halo. Those I noticed are flagged in
the remarks, but there could be more early/mid-K giants whose colors
are similar to the ∼M0 dwarfs.
A bunch of SIMBAD aliases have sent to the CDS, mostly now fixed in
the database by Arnaud Siebert.
Though there are no spectral types here, the list will help deal with
the Pesch & Sanduleak objective-prism survey for M dwarfs at the south
galactic pole (1978AJ.....83.1090P 1978AJ.....83.1090P, 1982PASP...94..345P 1982PASP...94..345P), which needs
a similar going-over.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
gr.dat 95 504 The Giclas catalog of red stars
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See also:
I/79 : Lowell Proper Motion Survey 8991 Northern Stars (Giclas 1971)
I/112 : Lowell Proper Motion Survey - Southern Hemisphere (Giclas+ 1979)
II/299 : GD blue stars from Lowell proper motion survey (Giclas+ 1980)
Byte-by-byte Description of file: gr.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- --- [GR*]
5- 7 I3 --- GR* [1/504] Star sequence ,number
11- 12 I2 h RAh Right Ascension J2000 (hours)
14- 15 I2 min RAm Right Ascension J2000 (minutes)
17- 21 F5.2 s RAs Right Ascension J2000 (seconds)
23 A1 --- DE- Declination J2000 (sign)
24- 25 I2 deg DEd Declination J2000 (degrees)
27- 28 I2 arcmin DEm Declination J2000 (minutes)
30- 33 F4.1 arcsec DEs Declination J2000 (seconds)
35 A1 --- s [bMsSTU-] Source of position (1)
37- 40 F4.1 mag Vmag Visual magnitude
44- 95 A52 --- Comments Comments by B. Skiff
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Note (1): Source of position from the following catalogues:
b = USNO-B1.0 (2003AJ....125..984M 2003AJ....125..984M, I/284)
M = 2MASS (2006AJ....131.1163S 2006AJ....131.1163S, II/246)
s = SkyView estimate (±1")
S = Sloan Digital Sky Survey DR7 (2008ApJS..175..297A 2008ApJS..175..297A, II/294)
T = Tycho-2 (2000A&A...357..367H 2000A&A...357..367H, I/259)
U = UCAC2 (2004AJ....127.3043Z 2004AJ....127.3043Z, I/289)
+ UCAC3 (I/315)
- = deleted stars
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History:
Prepared by B. Skiff (Lowell Observatory)
(End) Francois Ochsenbein [CDS] 23-Oct-2009