M2-42

{{ Planetary nebula

| image = 300px

| name = Minkowski 2-42 (M2-42)

| type = Planetary

| epoch = J2000

| ra = {{RA|18|22|32.08}}

| dec = {{DEC|-24|09|27.7}}

| dist_ly = 30,800 (9444 pc)

| appmag_v = 13.9

| size_v = 4″

| constellation =

| radius_ly =

| notes = Bipolar outflow, Bipolar nebula

| names = PN M 2-42

PNG 008.2-04.8

PK 008-04 2

Hen 2-393

ESO 522-21

PN Sa 2-331

WRAY 16-409

}}

Minkowski 2-42, abbreviated M2-42, is a planetary nebula that was discovered by Rudolph Minkowski in 1947. It is located about 30,800 light-years away from Earth in the Galactic bulge. It is known to be a bipolar planetary nebula containing two jets of material emerging from both sides of its central star. It has been found that its bipolar outflows have the typical features of Fast Low-Ionization Emission Region (FLIER).

The central star of M2-42 is classified as weak emission-line star, but its nitrogen and helium features may be linked to nitrogen sequences of Wolf-Rayet central stars of planetary nebula ([WN]). The chemical composition of this planetary nebula was found to be around the solar metallicity.

File:M2 42 ESO VST.png. The green part of the image was taken with a H-alpha filter.]]

References

{{reflist|refs =

{{cite journal | last1=Danehkar | first1=A. | last2=Parker | first2=Q. A. | last3=Steffen | first3=W.| date=2016 | title=Fast, low-ionization emission regions of the planetary nebula M2-42 | journal=The Astrophysical Journal | volume=151 | issue=2 | pages=38 | doi=10.3847/0004-6256/151/2/38 | bibcode=2016AJ....151...38D|arxiv = 1601.01702 | s2cid=53006455 | doi-access=free }}

{{cite journal | last1=DePew | first1=K. | last2=Parker | first2=Q. A. | last3=Miszalski | first3=B.| last4=De Marco | first4=O.| last5=Frew | first5=D. J. | last6=Acker | first6=A.| last7=Kovacevic | first7=A. V.| last8=Sharp | first8=R. G.| date=2011 | title=Newly discovered Wolf-Rayet and weak emission-line central stars of planetary nebulae | journal=Monthly Notices of the Royal Astronomical Society | volume=414 | issue=4 | pages=2812–2827 | doi=10.1111/j.1365-2966.2011.18337.x | doi-access=free | bibcode=2011MNRAS.414.2812D|arxiv =1101.2468 | s2cid=11319403 }}

{{cite journal | last1=Minkowski | first1=R. | date=1947 | title=New Emission Nebulae (II) | journal=Publications of the Astronomical Society of the Pacific | volume=59 | issue=350 | pages=257 | doi=10.1086/125962 | bibcode=1947PASP...59..257M| s2cid=250797181 }}

{{cite journal | last1=Tylenda | first1=R. | last2=Acker | first2=A. | last3=Stenholm | first3=B.| date=1993 | title=Wolf-Rayet nuclei of planetary nebulae. Observations and classification | journal=Astronomy and Astrophysics Supplement Series | volume=102 | pages=595–602 | bibcode=1993A&AS..102..595T}}

{{cite journal | last1=Wang | first1=W. | last2=Liu | first2=X. -W.| date=2007 | title=Elemental abundances of Galactic bulge planetary nebulae from optical recombination lines | journal=Monthly Notices of the Royal Astronomical Society | volume=381 | issue=4 | pages=669–701 | doi=10.1111/j.1365-2966.2007.12198.x | doi-access=free | bibcode=2007MNRAS.381..669W|arxiv =0707.0542 | s2cid=14459450 }}

}}

Category:Planetary nebulae

Category:Sagittarius (constellation)

M2-42

See also

References