NGC 1400

{{Short description|Galaxy in the constellation Eridanus}}

{{Sky|03|39|30.851|-|18|41|17.25}}

{{Infobox galaxy

|name=NGC 1400

|image=NGC1400 - hst 05999R814GB555.png

|caption=Hubble Space Telescope image of NGC 1400

|credit=

|epoch=J2000

| constellation name = Eridanus

| ra = {{RA|03|39|30.851}}{{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 }}

| dec = {{DEC|-18|41|17.25}}

| h_radial_v = 530 km/s

| z = 0.001769

| dist_ly = {{cvt|25|Mpc|Mly|lk=on|order=flip}}{{cite journal|title=The GALEX Ultraviolet Atlas of Nearby Galaxies|last1=Gil de Paz|first1=Armando|last2=Boissier|first2=Samuel|last3=Madore|first3=Barry F.|last4=Seibert|first4=Mark|last5=Joe|first5=Young H.|last6=Boselli|first6=Alessandro|last7=Wyder|first7=Ted K.|last8=Thilker|first8=David|last9=Bianchi|first9=Luciana|display-authors=1|journal=The Astrophysical Journal Supplement Series|volume=173|issue=2|pages=185–255|date=December 2007|doi=10.1086/516636|bibcode=2007ApJS..173..185G|arxiv=astro-ph/0606440|s2cid=119085482}}

| group_cluster =

| type = SA0⁻

| size =

| appmag_v = 10.96

| appmag_b = 11.92

| absmag_v =

| size_v = 2.3{{prime}} × 2.0{{prime}}

| names = {{odlist|UGC=|MCG=-03-10-022|PGC=13470}}{{cite simbad|title=NGC 1400|accessdate=2021-02-21}}

}}

NGC 1400 is an elliptical galaxy in the constellation Eridanus. At a distance of 65 million light-years from Earth, it was discovered by John Herschel in 1786. It is a member of the NGC 1407 group, whose brightest member is NGC 1407. The NGC 1407 group is part of the Eridanus Cluster, a cluster of 200 galaxies.

NGC 1400 is an early-type E0 galaxy. Despite their name, early-type galaxies are much older than spiral galaxies, and mostly comprise old, red-colored stars. Very little star formation occurs in these galaxies; the lack of star formation in elliptical galaxies appears to start at the center and then slowly propagates outward.{{cite web|url=http://www.space.com/29123-ancient-galaxies-die-inside-out.html|website=space.com|title=Colossal Ancient Galaxies Die from the Inside Out|author1=Howell, Elizabeth|date=2015|access-date=5 March 2017}}

NGC 1400 has had star formation in the past, which was caused by NGC 1400 falling into the NGC 1407 group.{{cite journal|doi=10.1111/j.1365-2966.2008.12892.x|title=The early-type galaxies NGC 1407 and NGC 1400 – II. Star formation and chemical evolutionary history|year=2008|last1=Spolaor|first1=Max|last2=Forbes|first2=Duncan A.|last3=Proctor|first3=Robert N.|last4=Hau|first4=George K. T.|last5=Brough|first5=Sarah|journal=Monthly Notices of the Royal Astronomical Society|volume=385|issue=2|pages=675–686|doi-access=free |arxiv=0801.2005|bibcode=2008MNRAS.385..675S|s2cid=15326784}}

One supernova has been observed in NGC 1400: SN 2021hcz (type Ia, mag. 15.4).[https://www.wis-tns.org/object/2021hcz Transient Name Server entry for SN 2021hcz.] Retrieved 23 March 2023.