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THE PPMXL CATALOG OF POSITIONS AND PROPER MOTIONS ON THE ICRS. COMBINING USNO-B1.0 AND THE TWO MICRON ALL SKY SURVEY (2MASS)
USNO-B1.0 and the Two Micron All Sky Survey (2MASS) are the most widely used all-sky surveys. However, 2MASS has no proper motions at all, and USNO-B1.0 published only relative, not absolute (i.e.,…
Estimating Distances from Parallaxes. V. Geometric and Photogeometric Distances to 1.47 Billion Stars in Gaia Early Data Release 3
Stellar distances constitute a foundational pillar of astrophysics. The publication of 1.47 billion stellar parallaxes from Gaia is a major contribution to this. Despite Gaia’s precision, the…
The effect of use and access on citations
Hot Stuff for One Year (HSOY) - A 583 million star proper motion catalogue derived from Gaia DR1 and PPMXL
The HSOY catalogue was created as a hybrid catalogue between Gaia-DR1 and ground-based astrometry, featuring proper motions (but no parallaxes) for a large fraction of the DR1 objects, to provide improved proper motions partly based on Gaia data.
The bibliometric properties of article readership information
- Michael J. Kurtz, G. Eichhorn, Barbara Elwell
- Computer ScienceJ. Assoc. Inf. Sci. Technol.
- 15 January 2005
The read–cite diagram is introduced to provide a two-dimensional view of an individual's scientific productivity and it is found that the citation function is proportional to the sum of two of the components of the readership function, proving that the normative theory of citation is true in the mean.
Worldwide Use and Impact of the NASA Astrophysics Data System Digital Library
- Michael J. Kurtz, G. Eichhorn, A. Accomazzi, Carolyn Stern-Grant, M. Demleitner, S. S. Murray
- PhysicsJ. Assoc. Inf. Sci. Technol.
- 25 September 2009
The concept of utility time is introduced to measure the impact of the ADS/URANIA and the electronic astronomical library on astronomical research and it is found that in 2002 it amounted to the equivalent of 736 full-time researchers, or $250 million, or the astronomical research done in France.
A Gaia DR2 Mock Stellar Catalog
We present a mock catalog of Milky Way stars, matching in volume and depth the content of the Gaia data release 2 (GDR2). We generated our catalog using Galaxia, a tool to sample stars from a…
The bibliometric properties of article readership information: Research Articles
The age biases of both reads and cites are shown and two new bibliometric measures are developed which have substantially less age bias than citations: SumProd, a weighted sum of total citations and the readership rate, intended to show the total productivity of an individual; and Read10, the Readership rate for articles published in the last 10 years, intended for an individual's current productivity.
CALIFA, the Calar Alto Legacy Integral Field Area survey: IV. Third Public data release
This paper describes the Third Public Data Release (DR3) of the Calar Alto Legacy Integral Field Area (CALIFA) survey. Science-grade quality data for 667 galaxies are made public, including the 200…
Stellar parameters for the central star of the planetary nebula PRTM 1 using the German Astrophysical Virtual Observatory service TheoSSA
The German Astrophysical Virtual Observatory (GAVO) developed the registered service TheoSSA (theoretical stellar spectra access) and the supporting registered VO tool TMAW (Tuebingen…