NGC 4527

{{Infobox Galaxy

| name = NGC 4527

| image = NGC4527 - SDSS DR14 (panorama).jpg

| caption = SDSS image of the spiral galaxy NGC 4527.

| epoch = J2000

| type = SAB(s)bc{{cite web

| title=NASA/IPAC Extragalactic Database

| work=Results for NGC 4527

| url=http://nedwww.ipac.caltech.edu/

| access-date=2013-10-12}}

| ra = {{RA|12|34|08.466}}

| dec = {{DEC|+02|39|14.414}}

| dist_ly = 48.9 Mly

| z = 0.005791

| h_radial_v = 1736 ± 1 km/s{{r|ned}}

| size = ~{{convert|31.92|kpc|ly|abbr=on|lk=on|order=flip}} (estimated){{r|ned}}

| appmag_v = 11.4

| size_v = 6.2{{prime}} × 2.1{{prime}}

| constellation name = Virgo

| names = {{odlist | UGC= 7721 | PGC= 41789 | CGCG= 042-156 | MCG= +01-32-101 | IRAS= 12315+0255}}

}}

NGC 4527 is a spiral galaxy in the constellation Virgo. It was discovered by German-British astronomer William Herschel on 23 February 1784.{{cite web | url = https://cseligman.com/text/atlas/ngc45.htm#4527 | title = New General Catalogue Objects: NGC{{nbsp}}4527 | last = Seligman | first = Courtney | website = Celestial Atlas | access-date = 6 December 2024}}

NGC 4527 is a member of the M61 Group of galaxies, which is a member of the Virgo II Groups, a series of galaxies and galaxy clusters strung out from the southern edge of the Virgo Supercluster.{{cite web | title=The Virgo III Groups |work=Atlas of the Universe |url=http://www.atlasoftheuniverse.com/galgrps/viriii.html |access-date=2010-11-27 }}

Characteristics

NGC 4527 is an intermediate spiral galaxy similar to the Andromeda Galaxy{{cite web

|title=Best of AOP: NGC 4527

|publisher=NOAO

|url=http://www.noao.edu/outreach/aop/observers/n4527.html

|access-date=2013-10-12}} and is located at a distance not well determined, but usually is considered to be an outlying member of the Virgo Cluster of galaxies,{{cite web

|title=Notes for object NGC 4527

|publisher=NASA-IPAC Extragalactic Database

|url=http://ned.ipac.caltech.edu/cgi-bin/datasearch?search_type=Note_id&objid=30967&objname=NGC%204527&img_stamp=YES&hconst=73.0&omegam=0.27&omegav=0.73&corr_z=1&of=table

|access-date=2013-10-12}} being placed within the subcluster known as S Cloud.{{cite web

| title = Galaxy On Line Database Milano Network (GOLDMine)

| url = http://goldmine.mib.infn.it/

| access-date = 2012-08-06}}

Unlike the Andromeda Galaxy, NGC 4527 is also a starburst galaxy, with 2.5 billion solar masses of molecular hydrogen concentrated within its innermost regions.

{{cite journal

|year=2003

|title=Multi-Line Observations of Molecular Gas in the Central Region of the Low Star-Formation Efficiency Starburst Galaxy NGC 4527

|journal=Publications of the Astronomical Society of Japan

|volume=55 |issue=1 |pages=87–101

|bibcode=2003PASJ...55...87S

|doi=10.1093/pasj/55.1.87

|doi-access=free }} However said starburst is still weak and seems to be on its earliest phases.

Supernovae

Three supernovae have been observed in NGC 4527:

Harlow Shapley discovered SN 1915A (type unknown, mag. 15.5) on 20 March 1915.{{cite web | website=Transient Name Server | title=SN{{nbsp}}1915A | url=https://www.wis-tns.org/object/1915A | publisher = IAU | access-date=6 December 2024}}[http://www.cbat.eps.harvard.edu/lists/Supernovae.html Central Bureau for Astronomical Telegrams list of Supernovae.] Retrieved 28 March 2023.{{Cite journal | last=Shapley | first=Harlow | title=A Faint Nova in the Nebula of Andromeda | journal=Publications of the Astronomical Society of the Pacific | date=1917 | volume=29 | issue=171 | pages=213–217 | doi=10.1086/122669 | bibcode=1917PASP...29Q.213S}}
Several astronomers reported the discovery of SN 1991T (type Ia-pec, mag. 13) on 13 April 1991.{{cite journal | bibcode=1991IAUC.5239....1W| title=Supernova 1991T in NGC 4527| last1=Waagen| first1=E.| last2=Evans| first2=R. O.| last3=Villi| first3=M.| last4=Cortini| first4=G.| last5=Johnson| first5=W.| last6=McNaught| first6=R. H.| last7=Mueller| first7=J.| last8=Cappellaro| first8=E.| last9=Cutispoto| first9=G.| last10=La Franca| first10=F.| last11=Goldschmidt| first11=C.| last12=Kirshner| first12=R. P.| last13=Peters| first13=J.| journal=International Astronomical Union Circular| date=1991| issue=5239| page=1}}{{cite web | website=Transient Name Server | title=SN{{nbsp}}1991T | url=https://www.wis-tns.org/object/1991T | publisher = IAU | access-date=6 December 2024}}
SN 2004gn (type Ic, mag. 16.6) was discovered on 1 December 2004 by the Lick Observatory Supernova Search (LOSS).{{cite web | website=Transient Name Server | title=SN{{nbsp}}2004gn | url=https://www.wis-tns.org/object/2004gn | publisher = IAU | access-date=6 December 2024}}{{Cite journal |last=Li |first=W. |title=Supernovae 2004gn and 2004go |journal=International Astronomical Union Circular |date=2004 |issue=8448 |pages=2 |bibcode=2004IAUC.8448....2L}}{{cite web