| 词条 | NGC 7640 |
| 释义 |
|name=NGC 7640 |image=NGC 7640 - HST - Potw1706a.tif |caption=NGC 7640 (photographed by the Hubble Telescope |type=SB(s)c |ra={{RA|23|22|06.58}}[1] |dec={{DEC|+40|50|43.5}}[1] |dist_ly=29.72 ± 0.5 Mly[1] |z=0.001231 ± 0.000004[1] |h_radial_v=+369 ± 1 km/s[1] |appmag_v=11.1 |size_v=10.5′ × 2′[1] |constellation name=Andromeda |absmag_v=11.86[1] |names=NGC 7640}}NGC 7640 is a barred spiral galaxy in the constellation of Andromeda. There is evidence that this galaxy has experienced an interaction with another galaxy in the (astronomically) recent past.[2] It is not immediately obvious this is a spiral galaxy from the photograph because it is edge on.[2] References1. ^1 2 3 4 5 6 {{cite web | title=NASA/IPAC Extragalactic Database | work=Results for NGC 7640 | url=http://ned.ipac.caltech.edu/cgi-bin/objsearch?objname=NGC+7640&extend=no&hconst=73&omegam=0.27&omegav=0.73&corr_z=1&out_csys=Equatorial&out_equinox=J2000.0&obj_sort=RA+or+Longitude&of=pre_text&zv_breaker=30000.0&list_limit=5&img_stamp=YES | accessdate=2017-02-13}} {{galaxy stub}}2. ^1 {{cite web |title=NASA TV |work=Hubble Sees Spiral in Andromeda |url=https://www.nasa.gov/image-feature/goddard/2017/hubble-sees-spiral-in-andromeda |accessdate=2017-02-13|date=2017-02-10 }} 3 : Andromeda (constellation)|NGC objects|Barred spiral galaxies |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。