منابع مشابه
Hubble Space Telescope Fine Guidance Sensor Astrometric Parallaxes for Three Dwarf Novae: Ss Aurigae, Ss Cygni, and U Geminorum
We report astrometric parallaxes for three well-known dwarf novae obtained using the Fine Guidance Sensors on the Hubble Space Telescope (HST). We found a parallax for SS Aurigae of mas, for p 5 5.00 5 0.64 SS Cygni we found mas, and for U Geminorum we obtained mas. These p 5 6.02 5 0.46 p 5 10.37 5 0.50 represent the first true trigonometric parallaxes of any dwarf novae. We briefly compare th...
متن کاملHst Fine Guidance Sensor Astrometric Parallaxes for Three Dwarf Novae: Ss Aurigae, Ss Cygni, and U Geminorum
We report astrometric parallaxes for three well known dwarf novae obtained using the Fine Guidance Sensors on the Hubble Space Telescope. We found a parallax for SS Aurigae of π = 5.00 ± 0.64 mas, for SS Cygni we found π = 6.02 ± 0.46 mas, and for U Geminorum we obtained π = 10.37 ± 0.50 mas. These represent the first true trigonometric parallaxes of any dwarf novae. We briefly compare these re...
متن کاملInfrared Studies of Epsilon Aurigae in Eclipse
We report here on a series of medium resolution spectro-photometric observations of the enigmatic long period eclipsing binary epsilon Aurigae, during its eclipse interval 20092011, using near-infrared spectra obtained with SpeX on IRTF, mid-infrared spectra obtained with BASS on AOES and IRTF, MIRSI on IRTF and MIRAC4 on MMT, along with mid-infrared photometry using MIRSI on IRTF and MIRAC4 on...
متن کاملAurigae: strong evidence for non-radial pulsations
We present further photometric observations of the unusual F0 V star 9 Aurigae and present evidence that this star’s radial velocity, spectroscopic line widths and line depths are also variable with the same frequencies as the photometric data (f1 ≈ 0.795 and f2 ≈ 0.345 d ). The phases of these sinusoids are stable over time scales of longer than one year, though the amplitudes can vary, making...
متن کاملDisks in the UY Aurigae binary
We report interferometric images of the UY Aur binary in 13CO J = 1→0 and J = 2→1 which reveal evidence for a large (≥ 20′′) circumbinary disk around the two pre-mainsequence stars. This is the second detection of a circumbinary disk around T Tauri stars. A Keplerian rotation curve around a central mass of ∼1.2M provides a good fit to the velocity data. However, 13CO emission at a systemic velo...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 1924
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/84.8.624