NGC 972

{{Infobox galaxy

| name = NGC 972

| image = NGC 972 In Bloom.jpg

| caption = NGC 972 taken by Hubble Space Telescope.

| epoch = J2000

| ra = {{RA|02|34|13.385}}

| dec = {{DEC|+29|18|40.47}}

| constellation name = Aries

| dist_ly = {{Convert|15.28|Mpc|Mly|order=flip|abbr=on|lk=on}}

| z = 0.005147

| h_radial_v = {{Val|1541|u=km/s|fmt=commas}}

| type = Sb or Sd

| mass = {{Val|1.2e10|ul=solar mass}}

| appmag_b = 12.1

| size_v = 10 arcmin

| names = LEDA 9788, MCG+05-07-010, UGC 2045

}}

NGC 972 is a dusty spiral galaxy in the northern constellation of Aries, located at an approximate distance of {{Convert|15.28|Mpc|Mly|disp=out|abbr=on|lk=on}} from the Milky Way. It was discovered in 1784 by William Herschel. The galactic features suggest it may have undergone a merger with a gas-rich companion, giving it asymmetrical arms, plus starburst activity in the nucleus and an off-planar nuclear ring. The inner 3.6 kpc of the galaxy is undergoing star formation at the rate of 2.1–2.7 {{solar mass|link=yes}}·yr⁻¹, but it lacks a nuclear bulge.

On October 16, 2008, a possible supernova event was observed about {{Val|16.2|ul=arcsecond}} west and {{Val|19.5|u=arcsecond}} north of the Galactic Center. It reached magnitude 14.7 in the infrared K' band, but only a possible very faint transient event was observed in the visual frequency range, most likely as a result of strong extinction.

The group of galaxies around NGC 972 is sometimes referred to as the "NGC 972 group," which includes NGC 1012, NGC 1056, UGC 1958, UGC 2017, UGC 2053, and UGC 2221.{{cite journal|last1=Vennik|first1=J.|last2=Richter|first2=G. M.|date=1994|title=Surface Photometry of Low-Surface-Brightness Galaxies in the Area of the NGC 972 Group of Galaxies|journal=Symposium - International Astronomical Union|language=en|volume=161|pages=553–555|doi=10.1017/S0074180900048075|issn=0074-1809|doi-access=free}}{{Cite journal|last1=Vennik|first1=J.|last2=Richter|first2=G. M.|date=1994|title=Photometry of groups of galaxies. II. The NGC 972 group|url=https://onlinelibrary.wiley.com/doi/abs/10.1002/asna.2103150306|journal=Astronomische Nachrichten|language=en|volume=315|issue=3|pages=245–251|doi=10.1002/asna.2103150306|bibcode=1994AN....315..245V |issn=1521-3994|url-access=subscription}}

References

{{reflist|refs=

{{cite journal |doi=10.1086/498708 |last1=Skrutskie |first1=Michael F. |last2=Cutri |first2=Roc M. |last3=Stiening |first3=Rae |last4=Weinberg |first4=Martin D. |last5=Schneider |first5=Stephen E. |last6=Carpenter |first6=John M. |last7=Beichman |first7=Charles A. |last8=Capps |first8=Richard W. |last9=Chester |first9=Thomas |last10=Elias |first10=Jonathan H. |last11=Huchra |first11=John P. |last12=Liebert |first12=James W. |last13=Lonsdale |first13=Carol J. |last14=Monet |first14=David G. |last15=Price |first15=Stephan |last16=Seitzer |first16=Patrick |last17=Jarrett |first17=Thomas H. |last18=Kirkpatrick |first18=J. Davy |last19=Gizis |first19=John E. |last20=Howard |first20=Elizabeth V. |last21=Evans |first21=Tracey E. |last22=Fowler |first22=John W. |last23=Fullmer |first23=Linda |last24=Hurt |first24=Robert L. |last25=Light |first25=Robert M. |last26=Kopan |first26=Eugene L. |last27=Marsh |first27=Kenneth A. |last28=McCallon |first28=Howard L. |last29=Tam |first29=Robert |last30=Van Dyk |first30=Schuyler D. |last31=Wheelock |first31=Sherry L. |title=The Two Micron All Sky Survey (2MASS) |journal=The Astronomical Journal |date=1 February 2006 |volume=131 |issue=2 |pages=1163–1183 |bibcode=2006AJ....131.1163S |s2cid=18913331 |issn=0004-6256 |doi-access=free }}

{{cite journal

| title=Cosmicflows-3

| display-authors=1 | last1=Tully | first1=R. Brent

| last2=Courtois | first2=Hélène M. | last3=Sorce | first3=Jenny G.

| journal=The Astronomical Journal

| bibcode=2016AJ....152...50T | arxiv=1605.01765

| doi=10.3847/0004-6256/152/2/50 | s2cid=250737862 | doi-access=free }}

{{cite journal

| title=Possible Reddened Supernovae in NGC 972 and NGC 5900

| display-authors=1 | last1=Dudley | first1=C. C.

| last2=Fischer | first2=J. | last3=Li | first3=W.

| journal=IAU Circular

| volume=8992 | page=1 | date=October 2008

| editor1-last=Green | editor1-first=D. W. E.

| bibcode=2008IAUC.8992....1D }}

{{cite journal

| title=Near-Infrared and Optical Morphology of the Dusty Galaxy NGC 972

| display-authors=1 | last1=Mayya | first1=Y. D.

| last2=Ravindranath | first2=Swara | last3=Carrasco | first3=L.

| journal=The Astronomical Journal

| volume=116 | issue=4 | pages=1671–1678 | date=October 1998

| doi=10.1086/300574 | arxiv=astro-ph/9808008

| bibcode=1998AJ....116.1671M | s2cid=11991856 }}

{{cite journal

| title=Massive Star Formation in the Infrared-bright Galaxy NGC 972

| last1=Ravindranath | first1=Swara | last2=Prabhu | first2=Tushar P.

| journal=The Astronomical Journal

| volume=115 | issue=6 | pages=2320–2330 | date=June 1998

| doi=10.1086/300355 | bibcode=1998AJ....115.2320R | doi-access=free }}

{{cite web|url=https://in-the-sky.org/data/object.php?id=NGC972|website=In-The-Sky.org|title=The galaxy NGC 972}}

{{cite web |title=In Bloom |url=https://spacetelescope.org/images/potw1926a/ |website=www.spacetelescope.org |access-date=1 July 2019 |language=en}}

}}

External links

{{commons category-inline}}
[http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+972&submit=SIMBAD+search NGC 972 on SIMBAD]

Category:Spiral galaxies

972

Category:Aries (constellation)

009788