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Markarian (clusters) Catalog?

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#1 BillP

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Posted 21 March 2019 - 09:44 AM

There are a few open clusters, such as Stock 2, which also carry the Markarian designation as well (e.g., Markarian 6 for Stock 2).  Does anyone have a reference as to who put together this catalog/list and when?  The only other Markarian I know is Benjamin "Benik" Egishevitch Markarian of Markarian Galaxy fame.


Edited by BillP, 21 March 2019 - 09:44 AM.


#2 beggarly

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Posted 21 March 2019 - 11:06 AM

Entry 'Biur' Biurakan Astrophysical Observatory Catalogue 13 open clusters, "B.E. Markarian is amoung this institute's most famous astronomers."
 
Cl Mrk 6 is Cl Stock 7
 
 
 

Edited by beggarly, 21 March 2019 - 11:26 AM.

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#3 NYJohn S

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Posted 21 March 2019 - 11:51 AM

Sky Safari lists 3 open clusters with the Markarian designation. Markarian 6, 38 & 50. Markarian 6 isn't shown as Stock 2. It looks like it's next to Stock 7 or part of it. Seems strange, If it's the same cluster it's usually shown once with both names. Could they be overlapping clusters?

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#4 herschelobjects

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Posted 21 March 2019 - 01:03 PM

According to Archinal and Hynes in “Star Clusters”, Markarian 6 and Stock 7 are the same object.


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#5 BillP

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Posted 21 March 2019 - 01:45 PM

Sorry in my opening post.  I had Stock 2 on the brain.  Meant Stock 7 as pointed out.



#6 BillP

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Posted 21 March 2019 - 02:05 PM

Sky Safari lists 3 open clusters with the Markarian designation. Markarian 6, 38 & 50.

 

While beggarly's post alludes to the catalog as having 13 members, your numbers obviously exceed that.  The 13 members seems to be a references to the Biurakan Star Cluster Catalog which has 13 members.  The Markarian designation is different as seen in this table:

https://www.stellar-...urakan-tour.htm.

 

If anyone has a reference to the Markarian Cluster Catalog, which was evidently published in this reference: http://adsabs.harvar...SoByu...9....1M.  please let us know.



#7 NYJohn S

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Posted 21 March 2019 - 02:07 PM

Thanks for posting. You brought Stock 7 to my attention. I've seen IC 1805 right next to it but never viewed Stock 7. Something new to check out.



#8 beggarly

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Posted 21 March 2019 - 04:38 PM

 
 
http://vizier.u-strasbg.fr/ catalog VII/172 First Byurakan Survey (FBS) (Markarian+, 1989) under 'FTP' file table7.dat.gz
 
Looks like the open clusters (Mrk 6, 10, 18, 38, and 50) are in the Markarian Catalog of Galaxies with UV continuum. You can find more information on http://simbad.u-strasbg.fr/simbad/
 

Edited by beggarly, 22 March 2019 - 01:51 AM.

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#9 BillP

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Posted 22 March 2019 - 08:34 AM

 

Looks like the open clusters (Mrk 6, 10, 18, 38, and 50) are in the Markarian Catalog of Galaxies with UV continuum. You can find more information on http://simbad.u-strasbg.fr/simbad/

 

 

Thanks for the 1st and 2nd references....just what I was looking for!  Thaanks!! waytogo.gif

 

Not sure the VisR reference with table7 is correct unless I am doing something wrong.  You can load that data file into VisR then look entries up.  Mrk 6 comes back as a type SAB0/a galaxy and not an open cluster.  http://vizier.u-stra....max=9999&Mrk=6
 


Edited by BillP, 22 March 2019 - 09:17 AM.


#10 beggarly

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Posted 22 March 2019 - 09:18 AM

You're right about the types in table7. The 5 objects are labeled as galaxies. It's old data (1989). Something like BL Lacertae.


#11 NYJohn S

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Posted 23 March 2019 - 02:05 PM

I think this may be what you're looking for but I can't seem to find an copy of it online - 1952 Compilation and publication of the Atlas of stellar clusters of various types (B.E. Markarian).

B.E. Markarian, Atlas of Stellar Clusters of Various Types // Publication of the Astronomical Council, Moscow, 1952 (in Russian).

 

From B.E. Markarian's biography - In just the first years of the existence of the Byurakan Observatory, obtaining photos of a significant number of stars of open clusters with a small telescope, Markarian made up an “Atlas of stellar clusters”, which was used widely by astronomers of many observatories.


Edited by NYJohn S, 23 March 2019 - 02:13 PM.



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