350 citations · 765 across the 24 of their papers we have counts for
18 papers · 1 filter
A Schmidt-Kennicutt law for star formation in the Milky Way disk
B. Fuchs, H. Jahreiss, C. Flynn
We use a new method to trace backwards the star formation history of the Milky Way disk, using a sample of M dwarfs in the solar neighbourhood which is representative for the entir…
The main sequence from F to K stars of the solar neighbourhood in SDSS colours
A. Just, H. Jahreiss
For an understanding of Galactic stellar populations in the SDSS filter system well defined stellar samples are needed. The nearby stars provide a complete stellar sample represent…
Spectroscopic distances of 28 nearby star candidates
H. Jahreiss, H. Meusinger, R. -D. Scholz +1
28 hitherto neglected candidates for the Catalogue of Nearby Stars (CNS) were investigated to verify their classification and to improve their distance estimates. All targets had a…
On the mass-to-light ratio of the local Galactic disc and the optical luminosity of the Galaxy
Chris Flynn, Johan Holmberg, Laura Portinari +2
We measure the volume luminosity density and surface luminosity density generated by the Galactic disc, using accurate data on the local luminosity function and the disc's vertical…
Search for nearby stars among proper motion stars selected by optical-to-infrared photometry III. Spectroscopic distances of 322 NLTT stars
Ralf-Dieter Scholz, Helmut Meusinger, Hartmut Jahreiß
Distance estimates based on low-resolution spectroscopy and Two Micron All Sky Survey (2MASS) J magnitudes are presented for a large sample of 322 nearby candidates from Luyten's N…
Kinematics of Nearby Subdwarf Stars
M. I. Arifyanto, B. Fuchs, H. Jahreiss +1
We present an analysis of the space motions of 742 subdwarf stars based on the sample of Carney et al. (1994, CLLA). Hipparcos parallaxes, TYC2+HIP proper motions and Tycho2 proper…
Search for nearby stars among proper motion stars selected by optical-to-infrared photometry. I. Discovery of LHS 2090 at spectroscopic distance of d=6pc
R. -D. Scholz, H. Meusinger, H. Jahreiß
We present the discovery of a previously unknown very nearby star - LHS 2090 at a distance of only d=6 pc. In order to find nearby (i.e. d < 25 pc) red dwarfs, we re-identified hig…
The evolution of the Milky Way monitored in the solar neighbourhood
B. Fuchs, C. Dettbarn, H. Jahreiss +1
In this review we concentrate on the dynamical evolution of the Milky Way as monitored in the solar neighbourhood. The relevant data sets are presented and discussed in detail. In…
A Finding List for Delta_mu Binaries derived from a Comparison of HIPPARCOS Proper Motions with Long-term Averaged Data
Roland Wielen, Christian Dettbarn, Hartmut Jahreiss +3
The comparison of quasi-instantaneously measured HIPPARCOS proper motions with long-term averaged proper motions, derived from ground-based data, allows the identification of many…
Polaris: astrometric orbit, position, and proper motion
R. Wielen, H. Jahreiss, C. Dettbarn +2
We derive the astrometric orbit of the photo-center of the close pair alpha UMi AP (=alpha UMi Aa) of the Polaris multiple stellar system. The orbit is based on the spectroscopic o…
The nearby M-dwarf system Gliese 866 revisited
Jens Woitas, Christoph Leinert, Hartmut Jahreiß +3
We present an improved orbit determination for the visual pair in the M-dwarf triple system Gliese 866 that is based on new speckle-interferometric and HST observations. The system…
Indications on the binary nature of individual stars derived from a comparison of their HIPPARCOS proper motions with ground-based data I. Basic principles
R. Wielen, C. Dettbarn, H. Jahreiss +2
We present a method which provides some information on the possible binary nature on an appararently single star. The method compares the instantaneously measured HIPPARCOS proper…
Kinematics of nearby subdwarfs
B. Fuchs, H. Jahreiss, R. Wielen
A sample of subdwarfs with accurate space velocities and standarized metallicities is presented. This was constructed by combining Hipparcos parallaxes ond proper motions with radi…
The contribution of brown dwarfs to the local mass budget of the Galaxy
B. Fuchs, H. Jahreiss, C. Flynn
Based on the recent discoveries of free floating brown dwarfs we derive estimates of the local mass density of this population of objects. Mass density estimates from various surve…
The Sixth Catalogue of Fundamental Stars (FK6) and the Problem of Double Stars
R. Wielen, H. Schwan, C. Dettbarn +2
The Sixth Catalogue of Fundamental Stars (FK6) combines the ground-based astrometric data of the basic fundamental stars, obtained over more than two centuries and summarized in th…
The Combination of HIPPARCOS Data with Ground-Based Astrometric Measurements
R. Wielen, H. Schwan, C. Dettbarn +2
The combination of HIPPARCOS measurements with suitable ground-based astrometric data improves significantly the accuracy of the proper motions of bright stars. The comparison of b…
Halo stars in the immediate solar neighbourhood
B. Fuchs, H. Jahreiss
We have searched the Forth Catalogue of Nearby Stars for halo stars and identified 15 subdwarfs and a high velocity white dwarf in the solar neighbourhood. This search was motivate…
MACHOs in the solar neighbourhood
B. Fuchs, H. Jahreiss
We rediscuss the question of what fraction of the population of MACHOs in the halo of the Milky Way might be in the form of halo dwarfs, because recent determinations indicate mass…