6,794 research outputs found
Mondale-Ferraro Campaign Itinerary, July 31, 1984-August 2, 1984: Seventh Draft
Seventh draft: campaign itinerary for first events following 1984 convention. Details events in Minnesota, New York, Ohio, Mississippi, and Texas scheduled from July 31, 1984 to August 2, 1984.https://ir.lawnet.fordham.edu/vice_presidential_campaign_materials_1984/1006/thumbnail.jp
Mondale-Ferraro Campaign Itinerary, July 31, 1984-August 2, 1984
Campaign itinerary for first events following 1984 convention. Details events in Minnesota, New York, Ohio, Mississippi, and Texas scheduled from July 31, 1984 to August 2, 1984. Includes handwritten notes and talking points.https://ir.lawnet.fordham.edu/vice_presidential_campaign_materials_1984/1003/thumbnail.jp
Letter from John F. Kelly, Postmaster of New York City, to Geraldine Ferraro
Letter from John F. Kelly, Postmaster of New York City, to Geraldine Ferraro. Includes data entry sheet.https://ir.lawnet.fordham.edu/vice_presidential_campaign_correspondence_1984_new_york/1238/thumbnail.jp
Jackson, Mississippi Agricultural Event: Update
Memorandum briefing Mondale-Ferraro team on agricultural issues prior to a campaign event in Jackson, Mississippi.https://ir.lawnet.fordham.edu/vice_presidential_campaign_materials_1984/1009/thumbnail.jp
Mondale-Ferraro Stationary
Official Mondale-Ferraro campaign stationary.https://ir.lawnet.fordham.edu/vice_presidential_campaign_materials_1984/1056/thumbnail.jp
The Unimodal Distribution Of Blue Straggler Stars in M75 (NGC 6864)
We have used a combination of multiband high-resolution and wide-field
ground-based observations to image the Galactic globular cluster M75 (NGC
6864). The extensive photometric sample covers the entire cluster extension,
from the very central regions out to the tidal radius, allowing us to determine
the center of gravity and to construct the most extended star density profile
ever published for this cluster. We also present the first detailed star counts
in the very inner regions. The star density profile is well re-produced by a
standard King model with core radius r_c ~ 5.4" and intermediate-high
concentration c ~ 1.75. The present paper presents a detailed study of the BSS
population and its radial distribution. A total number of 62 bright BSSs (with
m_F255W < 21, corresponding to m_F555W < 20) has been identified, and they have
been found to be highly segregated in the cluster core. No significant upturn
in the BSS frequency has been observed in the outskirts of M75, in contrast to
several other clusters studied with the same technique. This observational fact
is quite similar to what has been found in M79 (NGC 1904) by Lanzoni et al.
(2007a). Indeed the BSS radial distributions in the two clusters is
qualitatively very similar, even if in M75 the relative BSS frequency seems to
decrease significantly faster than in M79: indeed it decreases by a factor of 5
(from 3.4 to 0.7) within 1 r_c. Such evidence indicate that the vast majority
of the cluster heavy stars (binaries) have already sunk to the core.Comment: ApJ accepted, 10 pages, 11 figures, 2 table
The giant, horizontal and asymptotic branches of galactic globular clusters. I. The catalog, photometric observables and features
A catalog including a set of the most recent Color Magnitude Diagrams (CMDs)
is presented for a sample of 61 Galactic Globular Clusters (GGCs). We used this
data-base to perform an homogeneous systematic analysis of the evolved
sequences (namely, Red Giant Branch (RGB), Horizontal Branch (HB) and
Asymptotic Giant Branch (AGB)). Based on this analysis, we present: (1) a new
procedure to measure the level of the ZAHB (V_ZAHB) and an homogeneous set of
distance moduli obtained adopting the HB as standard candle; (2) an independent
estimate for RGB metallicity indicators and new calibrations of these
parameters in terms of both spectroscopic ([Fe/H]_CG97) and global metallicity
([M/H], including also the alpha-elements enhancement). The set of equations
presented can be used to simultaneously derive a photometric estimate of the
metal abundance and the reddening from the morphology and the location of the
RGB in the (V,B-V)-CMD. (3) the location of the RGB-Bump (in 47 GGCs) and the
AGB-Bump (in 9 GGCs). The dependence of these features on the metallicity is
discussed. We find that by using the latest theoretical models and the new
metallicity scales the earlier discrepancy between theory and observations
(~0.4 mag) completely disappears.Comment: 51 pages, 23 figures, AAS Latex, macro rtrpp4.sty included, accepted
by A
Blue Stragglers in Low-Luminosity Star Clusters
We examine the blue straggler populations of 13 low-luminosity (M_V_t >~
-6) globular clusters and 2 old open clusters. These clusters test blue
straggler formation in environments intermediate between higher luminosity (and
usually higher density) clusters and the Galactic field. The anti-correlation
between the relative frequency of blue stragglers (F_BSS = N_BSS / N_HB) and
cluster luminosity continues to the lowest luminosity clusters, which have
frequencies meeting or exceeding that of field stars. In addition we find that
the anti-correlation between straggler frequency and central density disappears
for clusters with density less than about 300 L_V,sun pc^-3, although this
appears to be an artifact of the correlation between cluster luminosity and
central density. We argue on observational (wide, eccentric binaries containing
blue stragglers in M67, and the existence of very bright stragglers in most of
the clusters in our sample) and theoretical grounds that stellar collisions
still produce a significant fraction of the blue stragglers in low luminosity
star clusters due to the long-term survival of wide binaries.Comment: 13 pages, 3 figures, accepted to ApJ Letter
Horizontal-Branch Models and the Second-Parameter Effect. IV. The Case of M3 and Palomar 3
We present a detailed analysis of the "second-parameter pair" of globular
clusters M3 (NGC 5272) and Palomar 3. Our main results can be summarized as
follows: i) The horizontal-branch (HB) morphology of M3 is significantly bluer
in its inner regions (observed with the Hubble Space Telescope) than in the
cluster outskirts (observed from the ground), i.e., M3 has an internal second
parameter. Most plausibly the mass loss on the red giant branch (RGB) has been
more efficient in the inner than in the outer regions of the cluster. ii) The
dispersion in mass of the Pal 3 HB is found to be very small -- consistent with
zero -- and we argue that this is unlikely to be due to a statistical
fluctuation. It is this small mass dispersion that leads to the most apparent
difference in the HB morphologies of M3 and Pal 3. iii) The relative HB types
of M3 and Pal 3, as measured by mean colors or parameters involving the number
of blue, variable, and red HB stars, can easily be accounted for by a fairly
small difference in age between these clusters, of order 0.5-1 Gyr -- which is
in good agreement with the relative age measurement, based on the clusters'
turnoffs, by VandenBerg (2000).Comment: 20 pages, 12 figures, emulateapj5 style. The Astrophysical Journal,
in press. Figs. 1, 6, 9, 10 are in png format. The preprint (postscript
format) with full resolution (embedded) figures is available from
http://www.astro.virginia.edu/~mc6v
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