Hubble Space TelescopeImaging of Bright Galactic X‐Ray Binaries in Crowded Fields
نویسندگان
چکیده
منابع مشابه
v 1 2 A ug 1 99 6 HST Imaging of Bright Galactic X - ray Binaries in Crowded Fields 1
We report high spatial resolution HST imagery and photometry of three wellstudied, intense galactic X-ray binaries, X2129+47, CAL 87 and GX17+2. All three sources exhibit important anomalies, not readily interpreted by conventional models. Each source also lies in a severely crowded field, and in all cases the anomalies would be removed if much of the light observed from the ground in fact came...
متن کاملResolving Sirius-like binaries with the Hubble Space Telescope
We present initial results from a Hubble Space Telescope ultraviolet imaging survey of stars known to have hot white-dwarf companions which are unresolved from the ground. The hot companions, discovered through their EUV or UV emission, are hidden by the overwhelming brightnesses of the primary stars at visible wavelengths. Out of 17 targets observed, we have resolved eight of them with the Wid...
متن کاملGalactic Bulges from Hubble Space Telescope Nicmos Observations: Nuclear Properties
Using Hubble Space Telescope NICMOS images, we analyze the structural properties of bulges of S0-Sbc galaxies down to scales of ∼10 pc. Isophotal profiles are matched with those from widerfield, ground-based K-band images enabling us to sample from the nucleus to the disk-dominated region of each galaxy, and thus to include proper bulge-disk decompositions in the analysis. The majority of galax...
متن کاملState Transitions in Bright Galactic X-ray Binaries: Luminosities Span by Two Orders of Magnitude
Using X-ray monitoring observations with the All Sky Monitor (ASM) on board the Rossi X-ray Timing Explorer (RXTE) and the Burst Alert Telescope (BAT) on board the Swift, we are able to study the spectral state transitions occurred in about 20 bright persistent and transient black hole and neutron star binaries. We have confirmed that there is a correlation between the X-ray luminosity correspo...
متن کاملGalactic Populations of Ultracompact Binaries
Using the StarTrack population synthesis code the formation and evolution of ultracompact binaries (UCBs) in the Galactic field are analyzed. The relative number of UCBs with a neutron star or a black hole accretor populating our Galaxy is predicted. Our results demonstrate that standard evolutionary scenarios involving primordial binaries may be sufficient to produce the UCBs in the Galactic f...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 1996
ISSN: 0004-637X,1538-4357
DOI: 10.1086/178025