搜索结果: 1-7 共查到“理学 m81”相关记录7条 . 查询时间(0.036 秒)
Ultraluminous X-ray source 1E 0953.8+6918 (M81 X-9): an intermediate-mass black hole candidate and its environs
binaries bubbles
2014/12/26
We present a ROSAT and ASCA study of the Einstein source X-9 and its relation to a shock-heated shell-like optical nebula in a tidal arm of the M81 group of interacting galaxies. Our ASCA observation ...
We have observed a 3° × 3° area centered on the M81/M82 group of galaxies using the Robert C. Byrd Green Bank Telescope in a search for analogs to the high-velocity clouds of neutral hydrogen found ar...
Detection of jet precession in the active nucleus of M81
Galaxies: Individual: M81 – galaxies: active – galaxies: jets – galaxies: nuclei – radio continuum: galaxies–radiation mechanisms: nonthermal – astrometry
2011/9/27
(See the complete and formatted abstract in the paper). We report on VLBI monitoring of the low-luminosity AGN (LLAGN) in M81 at 1.7, 2.3, 5, and 8.4GHz. These observations are phase-referenced to the...
Galactic cirrus emission at far-infrared wavelengths affects many extragalactic observations. Separating this emission from that associated with extragalactic objects is both important and difficult. ...
Importance of far-infrared mapping in a spiral galaxy: AKARI observation of M81
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2010/12/27
The importance of the far-infrared (FIR) mapping is demonstrated for a face-on spiral galaxy, M81, by analyzing its imaging data at 65, 90, and 140 {\mu}m taken by AKARI. Basic products are the dust t...
OPTICAL OBSERVATIONS OF M81 GALAXY GROUP IN NARROW BAND [SII] AND Hα FILTERS: HOLMBERG IX
ISM: supernova remnants HII regions Methods: observational Techniques: photometric Galaxies: ISM Galaxies: individual: Holmberg IX
2010/10/29
We present observations of the nearby tidal dwarf galaxy Holmberg IX in M81 galaxy group in narrow band [SII] and H® filters, carried out in March and November 2008 with the 2m RCC telescope at NA...
A comprehensive ha nova survey of m81。