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NGC 3184#SN 2010dn

{{Short description|Galaxy in the constellation Ursa Major}}

{{Infobox Galaxy

| name = NGC 3184

| image = NGC3184 3.6 5.8 8.0 microns spitzer.png

|caption = {{longitem|NGC 3184 as observed with the Spitzer Space Telescope, as part of the Spitzer Infrared Nearby Galaxy Survey. The blue colors represent the 3.6 micrometre emission from stars. The green and red colors represent the 5.8 and 8.0 micrometre emission from polycyclic aromatic hydrocarbons and possibly dustright}}

{{clarify|date=September 2017}}.

| epoch = J2000

| type = SA(s)b: II

| ra = {{RA|10|18|17.0}}

| dec = {{DEC|+41|25|28}}

| z = 0.001975{{cite web

|title=NASA/IPAC Extragalactic Database

|work=Results for NGC 3184

|url=http://nedwww.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=NGC+3184&img_stamp=yes&extend=no

|access-date=2010-06-01}}

| h_radial_v = {{nowrap|592 ± 1 km/s}}

| dist_ly = 39.8 ± 12 Mly
{{nowrap|(12.2 ± 3.7 Mpc)}}{{cite web

|title=Distance Results for NGC 3184

|work=NASA/IPAC Extragalactic Database

|url=http://nedwww.ipac.caltech.edu/cgi-bin/nDistance?name=NGC+3184

|access-date=2010-06-01}}

| appmag_v = 10.4

| size_v = 7.4{{prime}} × 6.9{{prime}}

| constellation name = Ursa Major

| names = UGC 5557, PGC 30087

}}

NGC 3184, the Little Pinwheel Galaxy, is an unbarred spiral galaxy approximately 40 million light-years away in the constellation Ursa Major. Its name comes from its resemblance to the Pinwheel Galaxy. It was discovered on 18 March 1787 by German-British astronomer William Herschel.{{cite web | url = https://cseligman.com/text/atlas/ngc31a.htm#3184 | title = NGC 3184 | last = Seligman | first = Courtney | website = Celestial Atlas | access-date = 8 August 2024 }} It has two HII regions named NGC 3180{{cite web

|title=NASA/IPAC Extragalactic Database

|work=Results for NGC 3180

|url=http://nedwww.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=NGC+3180&img_stamp=yes&extend=no

|access-date=2010-06-02}} and NGC 3181.{{cite web

|title=NASA/IPAC Extragalactic Database

|work=Results for NGC 3181

|url=http://nedwww.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=NGC+3181&img_stamp=yes&extend=no

|access-date=2010-06-02}}

NGC 3184 houses a high abundance of heavy elements. The blue color of its spiral arms comes mostly from relatively few bright young blue stars. The bright stars that highlight the arms were created in huge density waves that circle the center.

Structure

NGC 3184 has two prominent spiral arms. They have constant pitch angles, which makes them both symmetrical.{{cite journal |last1=Honig |first1=Z.N. |last2=Reid |first2=M.J. |title=Characteristics of Spiral Arms in Late-type Galaxies |journal=The Astrophysical Journal |date=February 2015 |volume=800 |issue=1 |pages=5387–5394 |doi=10.1088/0004-637X/800/1/53 |pmid=53 |url=https://ui.adsabs.harvard.edu/abs/2015ApJ...800...53H/abstract |access-date=November 10, 2022|arxiv=1412.1012 |bibcode=2015ApJ...800...53H |s2cid=118666575 }}

Supernovae and Astronomical Transients

Seven supernovae and astronomical transients have been observed in NGC 3184:

  • SN 1921B (type unknown, mag. 13.5){{cite web | website=Transient Name Server | title=SN 1921B | url=https://www.wis-tns.org/object/1921B |publisher = IAU | access-date=16 August 2024}} was discovered by Fritz Zwicky on 6 April 1921.
  • SN 1921C (type unknown, mag. 11){{cite web | website=Transient Name Server | title=SN 1921C | url=https://www.wis-tns.org/object/1921C |publisher = IAU | access-date=16 August 2024}} was discovered on 5 December 1921.
  • SN 1937F (type unknown, mag. 13.5){{cite web | website=Transient Name Server | title=SN 1937F | url=https://www.wis-tns.org/object/1937F |publisher = IAU | access-date=16 August 2024}} was discovered by Fritz Zwicky on 9 December 1937.
  • SN 1999gi (type II, mag. 14){{cite web | website=Transient Name Server | title=SN 1999gi | url=https://www.wis-tns.org/object/1999gi |publisher = IAU | access-date=16 August 2024}}{{cite web

|date=1999-12-10

|title=Supernova 1999gi in NGC 3184 (Circular No. 7329)

|publisher=Central Bureau for Astronomical Telegrams

|author=Daniel W. E. Green

|url=http://www.cbat.eps.harvard.edu/iauc/07300/07329.html

|access-date=2010-06-02}}{{cite web

|title=1999gi (main page)

|publisher=supernovae.net (International Supernovae Network)

|author=David Bishop

|url=http://www.rochesterastronomy.org/snimages/sn1999/index.html#1999gi

|access-date=2010-06-02}} was discovered by Reiki Kushida on 9 December 1999.

  • SN 2010dn (type ILRT, mag. 17){{cite web | website=Transient Name Server | title=SN 2010dn | url=https://www.wis-tns.org/object/2010dn |publisher = IAU | access-date=16 August 2024}} was discovered by Kōichi Itagaki on 31 May 2010.
  • SN 2016bkv (type II, mag. 17.2),{{cite web | website=Transient Name Server | title=SN 2016bkv | url=https://www.wis-tns.org/object/2016bkv |publisher = IAU | access-date=16 August 2024}} was discovered by Kōichi Itagaki on 21 March 2016.
  • AT 2019sfe (type unknown, mag. 20.6){{cite web | website=Transient Name Server | title=AT 2019sfe | url=https://www.wis-tns.org/object/2019sfe |publisher = IAU | access-date=16 August 2024}}[https://www.rochesterastronomy.org/sn2019/index.html#2019sfe 2019sfe] in NGC 3184 (David Bishop) was discovered on 8 October 2019.

= SN 2010dn =

On May 31, 2010, Kōichi Itagaki detected a magnitude 17 optical transient 33" east and 61" north of the center of NGC 3184 at coordinates 10 18 19.89 +41 26 28.8.{{cite web

|title=Latest Supernovae

|publisher=supernovae.net (International Supernovae Network)

|author=David Bishop

|url=http://www.rochesterastronomy.org/snimages/

|access-date=2010-06-02}} Designated SN 2010dn, this event was initially thought to be an outbursting luminous blue variable (LBV) star,{{cite journal

|last1=Smith |first1=Nathan

|last2=Weidong |first2=Li

|last3=Silverman |first3=Jeffrey

|last4=Ganeshalingam |first4=Mo

|last5=Filippenko |first5=Alexei |author-link5=Alexei Filippenko

|title=Luminous Blue Variable eruptions and related transients: Diversity of progenitors and outburst properties

|journal=Monthly Notices of the Royal Astronomical Society

|date=2010

|arxiv=1010.3718

|bibcode = 2011MNRAS.415..773S |doi = 10.1111/j.1365-2966.2011.18763.x |volume=415 |issue=1

|pages=773–810|doi-access=free

|s2cid=85440811 }} but later analysis categorized it as an intermediate-luminosity red transient (ILRT), also known as a luminous red nova.{{cite journal

| last = Cai

| first = Y.-Z.

| title = Intermediate-luminosity red transients: Spectrophotometric properties and connection to electron-capture supernova explosions

| date= 2021

| journal = Astronomy & Astrophysics

| volume = 654

| pages = A157

| url = https://www.aanda.org/articles/aa/full_html/2021/10/aa41078-21/aa41078-21.html

| doi = 10.1051/0004-6361/202141078| arxiv = 2108.05087

| bibcode = 2021A&A...654A.157C

}}{{cite web | website=Transient Name Server | title=AT 2010dn| url=https://www.wis-tns.org/object/2010dn |publisher = IAU | access-date=16 August 2024}} Archival Hubble and Spitzer images of NGC 3184 seem to show no progenitor for optical transient SN 2010dn.{{cite web

|date=2010-06-01

|title=ATEL 2655: HST/Spitzer limits on the progenitor of SN2010dn in NGC3184

|publisher=Astronomers Telegram

|url=http://www.astronomerstelegram.org/?read=2655

|access-date=2010-06-01}} SN 2010dn is just like SN 2008S and NGC 300-OT. On day 2, SN 2010dn had an unfiltered magnitude of 17.1, corresponding to a peak absolute magnitude of roughly -13.3.

class="wikitable sortable" style="text-align: center; font-size: 0.9em;"

|+Astronomical Transients in NGC 3184

! Name

! apmag

! type

SN 1921B13.5?
SN 1921C11.0?
SN 1937F13.5?
SN 1999gi14.0II
SN 2010dn17.2ILRT
SN 2016bkv17.2II
AT 2019sfe20.6?

File:2010dn-NGC3184-2010Jun01.jpg 2010dn on June 02, 2010]]

class="wikitable sortable" style="text-align: center; font-size: 0.9em;"

|+Galaxies with several Supernovae

! Galaxy

! number

! Declination

Arp 299 (NGC 3690 + IC 694)14+58
NGC 6946 (Fireworks)10+60
Messier 618+04
Messier 1007+15
NGC 31847+41
Messier 83 (Southern Pinwheel)6−29
NGC 2207 and IC 21636−21
NGC 22766+85
Messier 665+12
Messier 101 (Pinwheel)5+54
NGC 3095−09

See also

References

{{Reflist}}

External links

{{commons}}

  • {{APOD |date=20 September 2000 |title=Spiral Galaxy NGC 3184}}
  • [http://www.kopernik.org/images/archive/n3184.htm Spiral Galaxy NGC 3184 & Supernova 1999gi] (20-inch F/8.1 Ritchey Chretien Cassegrain)
  • [http://www.rochesterastronomy.org/snimages/sn1999/sn1999gi.html Supernova 1999gi in NGC 3184] (supernovae.net)
  • Discovery image of [http://www.k-itagaki.jp/images/psn3184.jpg SN2010dn]{{dead link|date=December 2017 |bot=InternetArchiveBot |fix-attempted=yes }} (2010-05-31 mag 17.5) / Wikisky [http://www.wikisky.org/?ra=10.305525&de=41.441334&zoom=10&show_grid=1&show_constellation_lines=1&show_constellation_boundaries=1&show_const_names=0&show_galaxies=1&show_box=1&box_ra=10.305525&box_de=41.441334&box_width=50&box_height=50&img_source=DSS2 DSS2] and [http://www.wikisky.org/?ra=10.305525&de=41.441334&zoom=10&show_grid=1&show_constellation_lines=1&show_constellation_boundaries=1&show_const_names=0&show_galaxies=1&show_box=1&box_ra=10.305525&box_de=41.441334&box_width=50&box_height=50&img_source=SDSS SDSS] zoom-in of the same region

{{Ursa Major}}

{{Ngc35}}

Category:Galaxies discovered in 1787

3184

05557

Category:Unbarred spiral galaxies

Category:Ursa Major

17870318

19991209

030087

Category:Discoveries by William Herschel