Publications (51)
Neutron stars from young nearby associations the origin of RXJ1605.3+3249
Nina Tetzlaff, Janos G. Schmidt, Markus M. Hohle +1
New photometry and astrometry of the isolated neutron star RX J0720-3125 using recent VLT/FORS observations
Thomas Eisenbeiss, Christian Ginski, Markus M. Hohle +3
Masses and Luminosities of O and B - type stars and red super giants
Markus M. Hohle, Ralph Neuhaeuser, Bernard F. Schutz
Astrometric and photometric monitoring of GQ Lup and its sub-stellar companion
Ralph Neuhaeuser, Markus Mugrauer, Andreas Seifahrt +2
An Arabic report about supernova SN 1006 by Ibn Sina (Avicenna)
Ralph Neuhaeuser, Carl Ehrig-Eggert, Paul Kunitzsch
Probing micro-arcsec astrometry with NACO
Andreas Seifahrt, Tristan Roell, Ralph Neuhaeuser
Discovery of new embedded Herbig-Haro objects in the rho Ophiuchi dark cloud
Nicolas Grosso, Joao Alves, Ralph Neuhaeuser +1
Optical photometry and X-ray monitoring of the "Cool Algol" BD+05 706: Determination of the physical properties
Guillermo Torres, Jeff A. Mader, Laurence A. Marschall +2
On the number of accreting and cooling isolated neutron stars detectable with the ROSAT All-Sky Survey
Ralph Neuhaeuser, Joachim Truemper
Homogeneous comparison of directly detected planet candidates: GQ Lup, 2M1207, AB Pic
Ralph Neuhaeuser
Ground-based exoplanet near-infrared search by imaging and spectroscopy: 3 new companion candidates in TWA
Ralph Neuhaeuser, Nuria Huelamo, Eike W. Guenther +5
Direct detection of exoplanet host star companion gamma Cep B and revised masses for both stars and the sub-stellar object
Ralph Neuhaeuser, Markus Mugrauer, Misato Fukagawa +2
Variations of 14-C around AD 775 and AD 1795 - due to solar activity
Ralph Neuhaeuser, Dagmar Neuhaeuser
The Neutron Star Born in the Antlia Supernova Remnant
Nina Tetzlaff, Guillermo Torres, Ralph Neuhaeuser +1
Infrared spectroscopy of a brown dwarf companion candidate near the young star GSC 08047-00232 in Horologium
Ralph Neuhaeuser, Eike Guenther
Using radioactivities to improve the search for nearby radio-quiet neutron stars
Markus M. Hohle, Ralph Neuhaeuser, Nina Tetzlaff
Direct detection of exo-planets: GQ Lupi
Ralph Neuhaeuser, Eike Guenther, Peter Hauschildt
The proper motion of the neutron star RXJ1856.5-3754 as measured by optical and X-ray imaging
Ralph Neuhaeuser
Identifying birth places of young isolated neutron stars
Nina Tetzlaff, Ralph Neuhaeuser, Markus M. Hohle +1
Imaging and spectroscopy of DENIS-P J104814-395606
Ralph Neuhaeuser, Eike Guenther, Joao Alves +8
Spectroscopic binaries in a sample of ROSAT X-ray sources south of the Taurus molecular clouds
Guillermo Torres, Ralph Neuhaeuser, Eike W. Guenther
Search for Remnant Clouds Associated with the TW Hya Association
Kengo Tachihara, Ralph Neuhaeuser, Yasuo Fukui
Solar activity around AD 775 from aurorae and radiocarbon
Ralph Neuhaeuser, Dagmar L. Neuhaeuser
The origin of the Guitar pulsar
Nina Tetzlaff, Ralph Neuhaeuser, Markus M. Hohle
HST, VLT, and NTT imaging search for wide companions to bona-fide and candidate brown dwarfs in the Cha I dark cloud
Ralph Neuhaeuser, Wolfgang Brandner, Joao Alves +2
Tycho Brahe, Abu Mashar, and the comet beyond Venus (ninth century A.D.)
Ralph Neuhaeuser, Paul Kunitzsch, Markus Mugrauer +2
A transient event in AD 775 reported by al-Tabari: A bolide - not a nova, supernova, or kilonova
Ralph Neuhaeuser, Paul Kunitzsch
Near-IR integral-field spectroscopy of the companion to GQ Lup
Andreas Seifahrt, Ralph Neuhaeuser, Peter H. Hauschildt +1
HIPPARCOS results for ROSAT-discovered young stars
Ralph Neuhaeuser, Wolfgang Brandner
New brown dwarf companions to dM(e) stars
Andreas Seifahrt, Markus Mugrauer, Manuela Wiese +2
The companion candidate near Fomalhaut - a background neutron star?
Ralph Neuhaeuser, Markus Hohle, Christian Ginski +3
Radial-velocity survey of members and candidate members of the TW Hydrae association
Guillermo Torres, Eike W. Guenther, Laurence A. Marschall +3
Medium-resolution optical spectroscopy of young stellar and sub-stellar M-dwarfs in the Cha I dark cloud
Ralph Neuhaeuser, Fernando Comeron
The Chinese comet observation in AD 773 January
Jesse Chapman, Mark Csikszentmihalyi, Ralph Neuhaeuser
The dM4.5e star G124-62 and its binary L dwarf companion DENIS-P J1441-0945: Common proper motion, distance, age, and masses
Andreas Seifahrt, Eike Guenther, Ralph Neuhaeuser
Infrared imaging and spectroscopy of companion candidates near the young stars HD 199143 and HD 358623 in Capricornius
Ralph Neuhaeuser, Eike Guenther, Markus Mugrauer +2
A solar super-flare as cause for the 14C variation in AD 774/5 ?
Ralph Neuhaeuser, Valeri Hambaryan
Newly found sunspot observations by Peter Becker from Rostock for 1708, 1709, and 1710
Ralph Neuhaeuser, Rainer Arlt, Elvira Pfitzner +1
Interpretation of the historic Yemeni reports of supernova SN 1006: early discovery in mid-April 1006 ?
Ralph Neuhaeuser, Dagmar Neuhaeuser, Wafiq Rada +3
Search for X-ray emission from bona-fide and candidate brown dwarfs
Ralph Neuhaeuser, Cesar Briceno, Fernando Comeron +7
A review of East Asian reports of aurorae and comets circa AD 775
Jesse Chapman, Dagmar Neuhaeuser, Ralph Neuhaeuser +1
Sunspot numbers based on historic records in the 1610s - early telescopic observations by Simon Marius and others
Ralph Neuhaeuser, Dagmar L. Neuhaeuser
Radial-Velocity Monitoring of Members and Candidate Members of the TW Hydrae Association
Guillermo Torres, Ralph Neuhaeuser, David W. Latham
The origin of RXJ1856.5-3754 and RXJ0720.4-3125 -- updated using new parallax measurements
Nina Tetzlaff, Thomas Eisenbeiss, Ralph Neuhaeuser +1
Detectability of planets in wide binaries by ground-based relative astrometry with AO
Ralph Neuhaeuser, Andreas Seifahrt, Tristan Roell +2
VLT spectra of the companion candidate Cha Ha 5/cc 1
Ralph Neuhaeuser, Eike Guenther, Wolfgang Brandner
Presumable European aurorae in the mid AD 770s were halo displays
Dagmar Neuhaeuser, Ralph Neuhaeuser
Observing the planet formation time-scale by ground-based direct imaging of planetary companions to young nearby stars: Gemini/Hokupa'a image of TWA-5
Ralph Neuhaeuser, Dan Potter, Wolfgang Brandner
Supernova SN 1006 in two historic Yemeni reports
Wafiq Rada, Ralph Neuhaeuser
Towards a Mass and Radius Determination of the Nearby Isolated Neutron Star RX J185635-3754
Jose A. Pons, Frederick M. Walter, James M. Lattimer +3
Search for young stars among ROSAT All-Sky Survey X-ray sources in and around the R CrA dark cloud
Ralph Neuhaeuser, Fred M. Walter, Elvira Covino +6