NGC 6834

{{Infobox open cluster

| name = NGC 6834

| image = File:Ngc 6834.jpg

| caption =

| credit =

| epoch = J2000.0

| constellation = Cygnus

| ra = {{RA|19|52|12.5}}

| dec = {{DEC|+29|24|29}}

| dist_ly = {{cvt|3326.7|pc|ly|order=flip|lk=on}}

| dist_pc =

| appmag_v = 7.8

| size_v = {{val|12|ul=arcminute}}

| radius_ly = 6.1 ly

| mass_msol =

| age = {{Val|65|18}} Myr

| notes =

| names = NGC 6834, C 1950+292

}}

NGC 6834 is a young open cluster of stars located about 10,850 light years from the Sun in the constellation Cygnus. It was discovered on July 17, 1784, by Anglo-German astronomer William Herschel. The cluster has a visual magnitude of 7.8, which is dimmed by 2.1 magnitudes due to interstellar dust. Half the cluster members lie within an angular radius of {{val|6|u=arcminute}}.

The Trumpler class of this cluster is {{nowrap|II 2 m}}, indicating it is medium-rich in stars (m) with a moderate brightness range (2) and little central concentration of the stars (II). It has about 260 members and an age of approximately 65 million years, although estimates range from 50 to 80 million. A total of fifteen B-type variable stars have been detected in the cluster with four Be stars. Five of the cluster members show hydrogen alpha emission, including a γ Cas and two λ Eri variables.

References

{{reflist|refs=

{{cite simbad

| title=NGC 6834 | access-date=2022-01-07 }}

{{cite web

| work=Celestial Atlas

| first=Courtney | last=Seligman

| title=NGC Objects: NGC 6800 - 6849

| url=https://cseligman.com/text/atlas/ngc68.htm#6834

| access-date=2022-01-08 }}

{{cite book

| title=Sky Vistas: Astronomy for Binoculars and Richest-Field Telescopes

| first1=Craig | last1=Crossen | first2=Gerald | last2=Rhemann

| year=2012 | page=68 | isbn=9783709106266

| publisher=Springer Vienna

| url=https://books.google.com/books?id=3vELBwAAQBAJ&pg=PA68 }}

{{cite journal

| title=Clusters and mirages: cataloguing stellar aggregates in the Milky Way

| last1=Cantat-Gaudin | first1=T. | last2=Anders | first2=F.

| journal=Astronomy & Astrophysics

| volume=633 | id=A99 | pages=22

| date=January 2020 | doi=10.1051/0004-6361/201936691

| arxiv=1911.07075 | bibcode=2020A&A...633A..99C | s2cid=208138247 }}

{{cite journal

| title=Optical/IR studies of Be stars in NGC 6834 with emphasis on two specific stars

| display-authors=1 | last1=Mathew | first1=Blesson

| last2=Varricatt | first2=Watson P. | last3=Subramaniam | first3=Annapurni

| last4=Ashok | first4=N. M. | last5=Banerjee | first5=D. P. K.

| journal=Research in Astronomy and Astrophysics

| volume=14 | issue=9 | id=1173-1192

| date=September 2014 | pages=1173–1192 | doi=10.1088/1674-4527/14/9/008

| arxiv=1408.6658 | bibcode=2014RAA....14.1173M | s2cid=118378570 }}

{{cite journal

| title=Galactic Planetary Nebulae and their central stars. I. An accurate and homogeneous set of coordinates

| last1=Kerber | first1=F. | last2=Mignani | first2=R. P.

| last3=Guglielmetti | first3=F. | last4=Wicenec | first4=A.

| display-authors=1 | journal=Astronomy and Astrophysics

| volume=408 | issue=3 | pages=1029–1035 | date=September 2003

| doi=10.1051/0004-6361:20031046 | doi-access=free

| bibcode=2003A&A...408.1029K }}

{{cite journal

| last1=Paunzen | first1=E. | last2=Netopil | first2=M.

| title=On the current status of open-cluster parameters

| journal=Monthly Notices of the Royal Astronomical Society

| volume=371 | issue=4 | pages=1641–1647 |date=October 2006

| doi=10.1111/j.1365-2966.2006.10783.x

| doi-access=free | bibcode=2006MNRAS.371.1641P | arxiv=astro-ph/0607421 | s2cid=15047964 }}

}}

External links

{{Commons category-inline}}

6834

Category:Open clusters

Category:Cygnus (constellation)