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HD 105281


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Coronagraphic Imaging of 3C 273 with the Advanced Camera for Surveys
The nearby and luminous QSO 3C 273 was imaged in 2002 July with the HighResolution Channel (HRC) of the Advanced Camera for Surveys (ACS) incoronagraphic mode in F475W (g), F606W (V), and F814W (I) as part of theEarly Release Observations (ERO) program. After subtraction of theremaining PSF of the QSO, these images offer the most detailed view yetof the morphology and colors of the host galaxy of this QSO. We findthat the central light distribution is elongated along the jet axis andits outer edge is delineated by an arc, centered on the jet at a radiusof ~2.6" from the QSO and bluer than the surrounding galaxy. This systemis embedded in an extended galactic halo. Compared with early-typegalaxies of similar redshifts and luminosities, the light distributionof 3C 273 is flatter in the core, likely from suppression by dust, butsimilar in the outer halo. The QSO is displaced from the isophotalcenter of the galaxy by ~1.4". Previously known emission-line extensionsare confirmed and new morphological features are identified, including adramatic spiral-shaped plume, two faint filaments, a dust lane, and aknot along the jet axis. Part of the inner jet is unambiguously detectedin all three bandpasses, and its morphology matches that of a MERLINradio map. Different mechanisms that could explain the morphology of 3C273 are considered, such as scattered QSO radiation, a face-on disk, anda merger event.Based on observations made with the NASA/ESA Hubble Space Telescope,obtained at the Space Telescope Science Institute, which is operated bythe Association of Universities for Research in Astronomy, Inc., underNASA contract NAS 5-26555.

Selection of standard stars for photometric observations with the 91-cm reflector at Okayama
Not Available

Properties of AM stars in the Geneva photometric system
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1980A&A....92..289H&db_key=AST

Multicolor photometry of metallic-line stars. III. A photometric catalogue
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1974RMxAA...1..175M&db_key=AST

Photoelectric UBVRI observations of AM stars
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1974AJ.....79.1290F&db_key=AST

Catalogue of AM stars with known spectral types
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1973A&AS...10..385H&db_key=AST

UVBY photometry of AM and AP stars.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1973AJ.....78..192W&db_key=AST

Catalogue et bibliographie des étoiles A à spectre particulier - Deuxième supplément
Not Available

Catalogue et bibliographie des étoiles A à spectre particulier
Not Available

A Catalogue of High-Velocity Stars.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1955ApJS....2..195R&db_key=AST

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观测天体数据

星座:室女座
右阿森松:12h07m22.00s
赤纬:-10°44'22.3"
视星:8.234
距离:182.482 天文距离
右阿森松适当运动:-73.5
赤纬适当运动:-1.8
B-T magnitude:8.681
V-T magnitude:8.271

目录:
适当名称   (Edit)
HD 1989HD 105281
TYCHO-2 2000TYC 5522-1387-1
USNO-A2.0USNO-A2 0750-07749479
HIPHIP 59118

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