Phoenix Dwarf

{{Infobox Galaxy

| image = An explosive phoenix - Phoenix Dwarf.jpg

| image_size = 300px

| caption= Phoenix Dwarf by the Very Large Telescope{{cite web |title=An explosive phoenix |url=https://www.eso.org/public/images/potw1838a/ |website=www.eso.org |access-date=17 September 2018}}

| name = Phoenix Dwarf Galaxy

| epoch = J2000

| type = IAm{{cite web

| title=NASA/IPAC Extragalactic Database

| work=Results for Phoenix Dwarf

| url=http://nedwww.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=Phoenix+Dwarf#ObjNo1

| access-date=2007-03-15 }}

| ra = {{RA|01|51|06.3}}

| dec = {{DEC|-44|26|41}}

| dist_ly = 1.44 ± 0.07 Mly (440 ± 20 kpc){{cite journal

| journal=Astronomical Journal

| date=2004

| volume=127

| issue=4

| pages=2031–2068

| bibcode=2004AJ....127.2031K

| doi=10.1086/382905| doi-access=free

}}{{cite journal

| author=Karachentsev, I. D.

| author2=Kashibadze, O. G.

| title=Masses of the local group and of the M81 group estimated from distortions in the local velocity field

| journal=Astrophysics

| date=2006

| volume=49

| issue=1

| pages=3–18

| bibcode=2006Ap.....49....3K

| doi=10.1007/s10511-006-0002-6 | s2cid=120973010

}}

| z = 60 ± 30 km/s

| appmag_v = 13.1

| size_v = 4′.9 × 4′.1

| constellation name = Phoenix

| notes = -

| names = ESO 245- G 007, PGC 6830

}}

The Phoenix Dwarf is a dwarf irregular galaxy discovered in 1976 by Hans-Emil Schuster and Richard Martin West and mistaken for a globular cluster.{{Cite journal

| last1 = Schuster

| first1 = H.-E.

| last2 = West

| first2 = R. M.

| journal = Astronomy & Astrophysics

| volume = 49

| title = A very distant globular cluster?

| bibcode = 1976A&A....49..129S

| pages = 129–131

| date = May 1976

}}{{Cite journal

| last1 = Canterna

| first1 = R.

| last2 = Flower

| first2 = P. J.

| date = March 1977

| title = A new dwarf irregular galaxy in the constellation Phoenix

| journal = Astrophysical Journal

| issue = Letters

| volume = 212

| bibcode = 1977ApJ...212L..57C

| pages = L57–L58

| doi = 10.1086/182374

}} It is currently 1.44 Mly away from Earth. Its name comes from the fact that it is part of the Phoenix constellation.

Characteristics

The Phoenix Dwarf has an inner part of young stars which is stretched in an east-west direction and an outer part of mainly old stars that is stretched north-south. The central region's rate of star formation seems to have been relatively constant across time (Martínez-Delgado et al. 1999). In 1999, St-Germain et al. discovered a H I region of about 10⁵ {{Solar mass|link=y}} just to the west of Phoenix. Its radial velocity is −23 km/s and may be physically associated with Phoenix if it is found to have a similar radial velocity.{{Cite journal

| last1 = van den Bergh

| first1 = Sidney

| author-link1 = Sidney van den Bergh

| title = Updated Information on the Local Group

| date = April 2000

| journal = The Publications of the Astronomical Society of the Pacific

| volume = 112

| issue = 770

| bibcode = 2000PASP..112..529V

| pages = 529–536

| doi = 10.1086/316548

|arxiv = astro-ph/0001040 | s2cid = 1805423