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Search for point sources of gamma radiation above 15 TeV with the HEGRA AIROBICC array
A search for potential point sources of very high energy gamma rays hasbeen carried out on the data taken simultaneously by the HEGRA AIROBICCand Scintillator arrays from August 1994 to March 2000. The list ofsought sources includes supernova remnants, pulsars, AGNs and binarysystems. The energy threshold is around 15 TeV. For the Crab Nebula, amodest excess of 2.5 standard deviations above the cosmic ray backgroundhas been observed. Flux upper limits (at 90% c.l.) of around 1.3 timesthe flux of the Crab Nebula are obtained, in average, for the candidatesources. A different search procedure has been used for an all-skysearch which yields absolute flux upper limits between 4 and 9 crabsdepending on declination, in the band from delta = 0 to delta =60o. The full versions of Tables 1 and 2, including thecoordinates of the sources, are available in electronic form at the CDSvia anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or viahttp://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/390/39
| BeppoSAX survey of Be/X-ray binary candidates
We present a BeppoSAX survey of five Be/X-ray binary candidates. Wereport on the identification of two of them, HD 110432 and HD 141926, aslow luminosity Be/X-ray binaries. For HD 110432 we report on thedetection of a pulsation period of ~ 14 ks. Because the luminosity ofthese sources is low and their spectra do not require non-thermalemission models, these systems are good Be+White Dwarf candidates. Ifthe pulsation period for HD 110432 is confirmed, this system would bethe most firm Be+WD candidate found up to date. The other three objectsHD 65663, HD 249179 and BD+53 2262 did not show detectable X-rayemission. We argue that, while the properties of BD+53 2262 are stillconsistent with a quiescent Be+Neutron Star scenario, the lack ofdetection for the other two objects implies that they are most probablynot X-ray binaries.
| The Hard X-Ray Luminosity of OB Star Populations: Implications for The Contribution of Star Formation to the Cosmic X-Ray Background
We present an empirical analysis of the integrated X-ray luminosityarising from populations of OB stars. In particular, we utilize resultsfrom the All-Sky Monitor on RXTE, along with archival data from previousmissions, to assess the mean integrated output of X-rays in the 2-10 keVband from accreting early-type binaries within 3 kpc of the Sun. Using arecent OB star census of the solar neighborhood, we then calculate thespecific X-ray luminosity per O star from accretion-powered systems. Wealso assess the contribution to the total X-ray luminosity of an OBpopulation from associated T Tauri stars, stellar winds, and supernovae.We repeat this exercise for the major Local Group galaxies, concludingthat the total X-ray luminosity per O star spans a broad range from 2 to20×1034 ergs s-1. Contrary to previousresults, we do not find a consistent trend with metallicity; in fact,the specific luminosities for M31 and the SMC are equal, despite havingmetallicities that differ by an order of magnitude. In light of theseresults, we assess the fraction of the observed 2-10 keV emission fromstarburst galaxies that arises directly from their OB star populations,concluding that, while binaries can explain most of the hard X-rayemission in many local starbursts, a significant additional component orcomponents must be present in some systems. A discussion of the natureof this additional emission, along with its implications for thecontribution of starbursts to the cosmic X-ray background, concludes ourreport.
| A catalogue of high-mass X-ray binaries
We present a catalogue of high-mass X-ray binaries. The catalogue is anupdated version of the catalogue of van Paradijs (1995). This newcatalogue contains 130 sources, 61 new high-mass X-ray binaries inaddition to the 69 sources listed in van Paradijs' catalogue. Most ofthe new sources are identified to be Be/X-ray binaries. Some sources,however, are only tentatively identified as high-mass X-ray binaries onthe basis of a transient character and/or a hard X-ray spectrum. Furtheridentification in other wavelength bands is needed to finally determinethe features of these sources. The aim of this catalogue is to providethe reader with some basic information on the X-ray sources and theircounterparts in other wavelength ranges (UV, optical, IR, radio). Incases where there is some doubt about the high-mass nature of the X-raybinary this is mentioned. Some doubtful cases have not been included inthe catalogue although they had been suggested by some authors to behigh-mass X-ray binaries, for example GRS 1915+105 and 1WGAJ1958.2+3232. The catalogue and references are also available inelectronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr(130.79.128.5) or viahttp://vizier.u-strasbg.fr/cgi-bin/qcat?J/A+AS/147/25
| Catalogue of H-alpha emission stars in the Northern Milky Way
The ``Catalogue of Stars in the Northern Milky Way Having H-alpha inEmission" appears in Abhandlungen aus der Hamburger Sternwarte, Band XIin the year 1997. It contains 4174 stars, range {32degr <= l() II< 214degr , -10degr < b() II < +10degr } having the Hαline in emission. HBH stars and stars of further 99 lists taken from theliterature till the end of 1994 were included in the catalogue. We givethe cross-identification of stars from all lists used. The catalogue isalso available in the Centre de Données, Strasbourg ftp130.79.128.5 or http://cdsweb.u-strasbg.fr and at the HamburgObservatory via internet.
| Catalogue of stars in the northern Milky Way having H-alpha in emission
Not Available
| Vitesses radiales. Catalogue WEB: Wilson Evans Batten. Subtittle: Radial velocities: The Wilson-Evans-Batten catalogue.
We give a common version of the two catalogues of Mean Radial Velocitiesby Wilson (1963) and Evans (1978) to which we have added the catalogueof spectroscopic binary systems (Batten et al. 1989). For each star,when possible, we give: 1) an acronym to enter SIMBAD (Set ofIdentifications Measurements and Bibliography for Astronomical Data) ofthe CDS (Centre de Donnees Astronomiques de Strasbourg). 2) the numberHIC of the HIPPARCOS catalogue (Turon 1992). 3) the CCDM number(Catalogue des Composantes des etoiles Doubles et Multiples) byDommanget & Nys (1994). For the cluster stars, a precise study hasbeen done, on the identificator numbers. Numerous remarks point out theproblems we have had to deal with.
| Radio continuum emission from stars: a catalogue update.
An updated version of my catalogue of radio stars is presented. Somestatistics and availability are discussed.
| X-Ray Emission from Be Star/X-Ray Binaries
Not Available
| Long-term monitoring of high mass X-ray binaries.
Not Available
| 55 emission stars discovered during observations of the Galactic anticenter at Abastumani
Not Available
| Gamma-ray emission from the galactic anticenter at MeV energies
Balloon-borne MPI Compton telescope data are used to derive an image ofthe anticenter region of the galaxy between right ascension 50 and 110deg and declination +10 and +50 deg, in the 1.1-10 MeV energy range.Significantly enhanced gamma-ray emission is observed along the galacticplane from 160 to 197 deg, with part of the emission being due to theCrab Nebula. No significantly enhanced gamma-ray emission is observedfrom the direction of the high energy gamma-ray source Geminga, or fromthe Seyfert galaxy MCG 8-11-11, which was recently reported to be a softgamma-ray source. The diffuse galactic gamma-ray emission limitdetermined leads to restrictions of the spectrum of interstellar cosmicray electrons at MeV energies.
| Second catalogue of X-ray sources
X-ray data collected by rockets, balloons and satellites during1964-1979 are listed in a catalogue of X-ray sources containing 677objects, and optical and radio counterparts are suggested. The number ofX-ray sources of each type in the galaxy is estimated. The data include73 bright, steady sources, 159 sources associated with extragalacticobjects, 275 weak, steady sources unassociated with extragalacticobjects, 63 burst sources, 40 transient sources, 24 X-ray supernovaremnants, 44 soft sources, and 8 hard sources.
| A catalog of X-ray sources
A catalog of X-ray sources containing 517 objects known as of 1978February has been compiled. X-ray data collected by means of rockets,balloons, and satellites during 1964-1977 are listed. Optical and radiocounterparts are suggested. The existence of the weak X-ray sourcepopulation in the Galaxy is indicated. Average parameters of thedifferent types of X-ray sources are estimated, as well as the number ofX-ray sources of each type in the Galaxy.
| The fourth Uhuru catalog of X-ray sources.
Abstract image available at:http://adsabs.harvard.edu/abs/1978ApJS...38..357F
| Mesures d'étoiles doubles faites au réfracteur de 38 centimètres de l'Observatoire de Nice
Not Available
| General Catalogue of Stellar Radial Velocities
Not Available
| Studies of Faint B-Type Stars.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1950ApJ...111..495P&db_key=AST
| Supplement to the Mount Wilson Catalogue and Bibliography of Stars of Classes B and a whose Spectra have Bright Hydrogen Lines.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1943ApJ....98..153M&db_key=AST
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