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2 edition of ROSAT observations of the x ray binary HD 154791 found in the catalog.

ROSAT observations of the x ray binary HD 154791

ROSAT observations of the x ray binary HD 154791

final report.

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  • 12 Currently reading

Published by National Aeronautics and Space Administration, National Technical Information Service, distributor in [Washington, DC, Springfield, Va .
Written in English

    Subjects:
  • Astronomy.

  • Edition Notes

    Series[NASA contractor report] -- NASA-CR 195189., NASA contractor report -- NASA CR-195189.
    ContributionsUnited States. National Aeronautics and Space Administration.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL14704547M

    X-ray positions and ultraviolet observations ofHDwith the International Ultraviolet Explorer (IUE). This identification of an X-ray binary with an M giant star was unusual. There are only a few other bright X-ray binaries with M giant secondaries, e.g., a few symbiotic stars (Kenyon ) and GX 1 4. At the distance of HD , the X-ray. Accession , Smithsonian Astrophysical Observatory, Contracts and Procurement Office, Contract, Grant, and ROSAT Observations of the X-Ray Binary HD Box 5 of International Ultraviolet Explorer Observing Program IUE Observations of the X-Ray Binary HD Author: Contracts, Procurement Office.

    In particular, I report about the attempts for and results of quick follow-up observations (including the GRBs localized with BeppoSAX and RXTE) with ROSAT with its capability to achieve 10 ′ ′ locations of X-ray afterglow sources. ROSAT Observations of B and Be Stars p. X-ray properties of early-type stars p. Effects of X-rays on the ionization state of Be star winds p. Infrared spectroscopy of Be/X-ray binaries p. Multiwavelength observations of the Be-star/X-ray binary EXO+ during outburst p.

    We present recent contemporaneous X-ray and optical observations of the Be/X-ray binary system A +26 with the Fermi/Gamma-ray Burst Monitor (GBM) and several ground-based observatories. These new observations are put into the context of the rich historical data (since {approx}) and discussed in terms of the neutron-star-Be-disk interaction. This is the most precise position obtained for an X-ray afterglow and confirms that the X-ray and optical afterglows have the same origin. We present the keV combined HRI and BeppoSAX Low-Energy Concentrator Spectrometer decay light curve which can be well fit with a power-law.


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ROSAT observations of the x ray binary HD 154791 Download PDF EPUB FB2

We have been surveying the Taurus dark cloud for young stars using a variety of techniques. Two optical proper motion surveys identified 8 new pre-main sequence stars; an IRAS-based program discovered 6 new embedded sources and new T Tauri stars.

Finally, an optical objective prism survey found 12 new T Tauri stars. Our goal in this project is to examine and compare star formation in the.

Get this from a library. ROSAT observations of the x ray binary HD final report. [United States. National Aeronautics and Space Administration.;]. We acquired contemporaneous IUE and ROSAT observations of HD on March The system was detected with both instruments: IUE recorded a weak SWP continuum and emission from C III] and C IV, while the ROST PSPC detector found a modest X-ray source near the position of HD Our goal in this project is to determine the source of the UV and X-ray emission.

ROSAT observations of the X ray binary HD Authors: first goal of the project is to survey the regions using IR photometry to identify very red pre-main sequence stars and X-ray imaging to identify solar-type young stars missed in the near-IR survey.

We will follow up these observations with molecular line surveys to compare the. ROSAT observations of the x ray binary HD By first goal of the project is to survey the regions using IR photometry to identify very red pre-main sequence stars and X-ray imaging to identify solar-type young stars missed in the near-IR survey.

We will follow up these observations with molecular line surveys to compare the Author: Scott J. Kenyon. Kenyon, Scott J. "ROSAT observations of the x ray binary HD " Final Report, 15 May - 14 Nov.

Smithsonian Astrophysical Observatory, Cambridge, MA. 01/ 01/ Kim, Dong-Woo; Fabbiano, G. "ROSAT PSPC observations of the early-type galaxies NGC and NGC Central cooling and mass determination" Astrophysical Journal, We present results of analysis of observations of the X-ray source 2A + with the Rosat Position Sensitive Proportional Counter (PSPC) and the High Resolution Imager (HRI).

2A +. tical and X-ray survey and pointed ROSAT observations and draw conclusions on the reality of each new candi-date massive X-ray binary. We then discuss the nature of the new systems discovered and their relation to the already known population of massive X-ray binaries.

A preliminary report on this work was given in Motch et al. (c,d). ROSAT provides a ~ 2 degree diameter field of view with the PSPC in the focal plane, and ~ 40 arcmin diameter field of view with the HRI in the focal plane. The ROSAT mission began with a six-month, all-sky PSPC survey, after which the satellite began a series of pointed observations that will continue for the duration of the project.

Abstract. 4C is the radio source that shows up as a point-like x-ray source inside the supernova remnant HB9 (Leahy, ). Leahy, found a ∓4 keV Einstein IPC flux of approximately × 10 −l2 erg cm −2 s ∓l and a significantly higher hardness ratio than the rest of HB9. Too few counts were available for any spectral : D.A.

Leahy. X-Ray Binaries Literature: †An Introduction to Modern Astronomy, Carroll & Formation of Low-Mass X-Ray Binaries (I) wide binary with large mass ratio common-envelope and spiral-in phase ejection of common envelope and subsequent supernova by ROSAT, ASCA, LX> W File Size: 3MB. Lightcurves of two X-ray sources in globular clusters, as obtained from the ROSAT All-Sky Survey.

Each point corresponds to a single scan. The left graph shows the countrate for the source in Ter 5 as a function of Heliocentric Julian Day, and illustrates that the high average flux detected during the survey is not due to a single X-ray by: 3.

4U+24 was proposed to be a symbiotic X-ray binary by Garcia et al. () on the basis of a positional association with the M giant star HD obtained from ob-servations with the Einstein Observatory Imaging Proportional Counter (IPC).

A position obtained with the ROSAT High Resolution Imager by Morgan & Garcia () was appar. ROSAT HRI catalogue of X-ray sources in the LMC region.

Sasaki, F. Haberl, and W. Pietsch Max{Planck{Institut f¨ur extraterrestrische Physik, Giessenbachstraˇe, D Garching, Germany Received Decem ; accepted Janu Abstract.

All pointed observations of the ROSAT High Resolution Imager (HRI) with exposure times Cited by:   Abstract. ROSAT/PSPC observations of a long-duration, giant X-ray flare on the eclipsing binary Algol are presented. With a total thermally radiated energy of 7.

10 36 erg, this flare is one of the largest events ever observed. The flare decay is modeled by means of the quasi-static cooling method, which yields a height of the flare loop arcade of ≅ 1R K, and a plasma density of 10 11 cm −: R.

Ottmann. Anderson et al. () identified a rotating molecular disk around the binary protostar IRS 7 (Taylor & Storey ;Sicilia-Aguilar et al. ), which harbors an extremely embedded source X W. A symbiotic binary is a system that contains a hot object accreting from an M giant companion, either from the wind of the M star or via Roche lobe overflow (e.g., Iben & Tutukov ).In most symbiotic stars the accreting object is a white dwarf, and these systems can be modest X-ray emitters (e.g., Mürset et al.

).In far fewer systems is the accreting object thought to be a neutron star. Nearly all of the X-ray binaries known in the SMC were detected in ROSAT PSPC observations; most of them with luminosities below erg s−1 suggesting that the fraction of high luminos-ity X-ray binary systems in the Magellanic Clouds (MCs) is not signi cantly larger than in our galaxy.

Seventeen X-ray sources are associated with SNRs found Cited by: Astron. Astrophys.{ () ASTRONOMY AND ASTROPHYSICS ROSAT and follow-up infrared observations of the X-ray burster KS Didier Barret1;2, Christian Motch?;3, and Peter Predehl4 1 Centre d’Etude Spatiale des Rayonnements, CESR-CNRS/UPS, 9 Av.

du colonel Roche, BPF Toulouse, Cedex, France 2 Harvard Smithsonian Center for Astrophysics, 60 Garden. –ADP, PI “Simultaneous IUE/ROSAT Observations of EXO”, $30K –ROSAT, Co-I, “ROSAT Observations of the X-ray Binary HD ”. We present extensive optical, infrared, and X-ray observations of the S-type symbiotic low-mass X-ray binary GX 1+4/V Oph, which consists of a 2-min X-ray pulsar accreting from an M6 III giant.

This is the only symbiotic system de nitely known to contain a neutron star. The mean observed spectral type of the X-ray-heated mass donor is M5 III.X-ray light curve shows large variability, and the pulsar shows both spin-up and spin-down (e.g., Chakrabarty et al.

). Chakrabarty & Roche () presented extensive optical, infra-red, and X-ray observations of GX 1+4 and concluded that the binary period must be Cited by: We have searched the entire ROSAT archive for useful observations to study X-ray emission from Galactic planetary nebulae (PNs).

The search yields a sample of 63 PNs, which we call the ROSAT PN sample. About 20%% of this sample show X-ray emission; these include 13 definite detections and three possible detections (at a 2 σ level).