Messier 98
Template:Short description Template:Use dmy dates Template:Infobox Galaxy
Messier 98, M98 or NGC 4192, is an intermediate spiral galaxy about 44.4<ref name="Erwin2013"/> million light-years away in slightly northerly Coma Berenices, about 6° to the east of the bright star Denebola (Beta Leonis). It was discovered by French astronomer Pierre Méchain on 1781,Template:Efn along with nearby M99 and M100, and was catalogued by compatriot Charles Messier 29 days later in his {{#invoke:Lang|lang}}.<ref name="Thompson2007"/> It has a blueshift, denoting ignoring of its fast other movement (vectors of proper motion), it is approaching at about 140 km/s.<ref name=ned/>
The morphological classification of this galaxy is SAB(s)ab,<ref name="Erwin2013"/> which indicates it is a spiral galaxy that displays mixed barred and non-barred features with intermediate to tightly wound arms and no ring.<ref name="Buta2007"/> It is highly inclined to the line of sight at an angle of 74°<ref name="Schoeniger1997"/> and has a maximum rotation velocity of 236 km/s.<ref name="Duc2008"/> The combined mass of the stars in this galaxy is an estimated 76 billion (Template:Nowrap) times the mass of the Sun. It contains about 4.3 billion solar masses of neutral hydrogen and 85 million solar masses in dust.<ref name="Davies2012"/> The nucleus is active, displaying characteristics of a "transition" type object. That is, it shows properties of a LINER-type galaxy intermixed with an H II region around the nucleus.<ref name="Terashima1985"/>
Messier 98 is a member of the Virgo Cluster, which is a large cluster of galaxies, part of the local supercluster.<ref name="binggelietal1985"/>
About 750 million years ago, it may have interacted with the large spiral galaxy Messier 99. These are now separated by Template:Convert.<ref name="Duc2008"/>
See alsoEdit
- List of Messier objects
- Messier 86, another blueshifted galaxy
ReferencesEdit
Template:Reflist Template:Notelist
External linksEdit
Template:Sky Template:Portal bar Template:Messier objects Template:Ngc45 Template:Coma Berenices