J/AJ/89/636 Giant M stars in Baade's Window (Blanco+, 1984)
Giant M stars in Baade's Window.
Blanco V.M., Mccarthy M.F., Blanco B.M.
<Astron. J., 89, 636-647 (1984)>
=1984AJ.....89..636B 1984AJ.....89..636B
ADC_Keywords: Stars, giant ; Stars, M-type ; Photometry
Abstract:
Near-infrared small-dispersion spectra obtained with a grism at the
prime focus of CTIO's 4-m telescope have been used to survey and
classify late-type red giants found in a circular area with a diameter
of 24.4 arcmin which is contained within Baade's Window. The survey is
complete to a distance that extends past the galactic nuclear bulge.
The presented stars therefore constitute a unique complete sample of
the red giant population of the nuclear bulge. A total of 306 red
giants, including all giants of type M6 or later, are presented with a
list of their coordinates, spectral classes, and apparent I
magnitudes. A finding chart is also given. No C or S stars were found
even though they should have been detected if they exist. Evidence is
presented of uneven foreground interstellar obscuration in Baade's
Window.
Description:
The list below provides improved coordinates and a few IDs for the
306 late-M giants near NGC 6522 reported by Blanco et al. I used
the source coordinates as a start, and matched against the 2MASS
catalogue. The positions are systematically off by 2"-4", with many in
error by ∼10"; a few are simply wrong by larger amounts. The chart
provided with the paper was indispensable in identifying the stars,
which I did using cut-outs mostly from 2MASS J-band images, which
matched the I-band chart photo fairly well. The remarks indicate when
there is a large error of some sort, sometimes a typo and others an
outright error. The Blanco spectral types and 'I' mags are copied.
I matched the corrected coordinates against MSX6C and GCVS v4.1,
accepting only quite close matches (generally < 4"). There are many
additional GCVS/NSV names that are "likely" matches, but since work on
this area by the GCVS group is not yet published, I defer going
further with the IDs. Likewise I have ommitted matching against OGLE
and various near-IR surveys - coordinates need to be checked for
systematic differences for many of these.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 89 306 Late M giants
--------------------------------------------------------------------------------
See also:
II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
V/114 : MSX6C Infrared Point Source Catalog (Egan+ 2003)
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 I3 --- BMB Sequential number
7- 8 I2 h RAh Right ascension (J2000)
10- 11 I2 min RAm Right ascension (J2000)
13- 17 F5.2 s RAs Right ascension (J2000)
19 A1 --- DE- Declination sign (J2000)
20- 21 I2 deg DEd Declination (J2000)
23- 24 I2 arcmin DEm Declination (J2000)
26- 29 F4.1 arcsec DEs Declination (J2000)
31 A1 --- --- [M]
33- 36 F4.1 mag Imag I magnitude
39- 42 A4 --- SpType MK spectral type
46- 62 A17 --- MSX6C MSX6C (V/114) designation
65- 89 A25 --- Rem Remarks
--------------------------------------------------------------------------------
History:
The table was actualised by Brian Skiff, Brian.Skiff(at)lowell.edu
(End) Francois Ochsenbein [CDS] 01-Aug-2004