{{Short description|Galaxy in the constellation Draco}} {{Infobox galaxy|name=[[Markarian galaxies|Markarian]] 876|image=File:MRK876 hst 9763 06 acs wfc f625w sci hdr.jpg|caption=[[Hubble Space Telescope|HST]] image of Markarian 876.|epoch=[[J2000.0]]|constellation name=[[Draco (constellation)|Draco]]|ra={{RA|16|13|57.17}}|dec={{DEC|+65|43|09.98}}|z=0.121090|h_radial_v=36,302 [[kilometer per second|km/s]]|dist_ly=1.752 [[light year|Gly]] (537.16 [[Megaparsec|Mpc]])|appmag_v=15.49|appmag_b=16.03|type=E2, Sy1|size={{convert|117.72|kpc|ly|-2|abbr=off}}<br />(diameter; [[2MASS]] K-band total isophote)<ref name=ned /> |names=[[Principal Galaxies Catalogue|PGC]] 57553, PG 1613+658, [[IRAS]] 16136+6550, RBS 1567, 2E 3624, [[2MASX]] J16135722+6543096}}
'''Markarian 876''' ('''Mrk 876''') known as '''PG 1613+658''', is an [[elliptical galaxy]] located in the constellation of [[Draco (constellation)|Draco]]. With a [[velocity]] relative to the [[cosmic microwave background]] of 36,302 ± 60 [[Kilometre|kilometers]] per seconds, the galaxy is located 1.75 billion [[Light-year|light years]] from [[Earth]]. It is a [[Seyfert galaxy]].<ref name="ned">{{Cite web |title=By Name NASA/IPAC Extragalactic Database |url=https://ned.ipac.caltech.edu/byname?objname=MRK+876&hconst=67.8&omegam=0.308&omegav=0.692&wmap=4&corr_z=1 |access-date=2024-10-08 |website=ned.ipac.caltech.edu}}</ref>
== Characteristics == Markarian 876 is classified as a large galaxy with a distorted morphology. It has [[Tidal tail|tidal tails]] extending out from the galaxy by more than 50 [[Minute and second of arc|arcsecs]] or 85 [[Parsec|kiloparsecs]] (kpc). The structure of the galaxy appears lopsided and complicated with a secondary nucleus or knot of [[light]] located 1.6 arcsec west of the main nucleus.<ref name="hutchings neff 1992">{{Cite journal |last=Hutchings |first=J. B. |last2=Neff |first2=S. G. |date=July 1992 |title=Optical imaging of QSOs with 0.5 arcsec resolution |journal=[[The Astronomical Journal]] |volume=104 |issue=1 |pages=1 |bibcode=1992AJ....104....1H |doi=10.1086/116216 |issn=0004-6256}}</ref> A [[barred spiral galaxy]] companion is found lying at the same [[redshift]], indicating the peculiar structure in Markarian 876 might be directly caused by a strong [[Gravity|gravitational interaction]] with the object.<ref>{{Cite journal |last=Alloin |first=D. |last2=Barvainis |first2=R. |last3=Gordon |first3=M.A. |last4=Antonucci |first4=R.R.J. |date=1992 |title=CO emission from radio quiet quasars - New detections support a thermal origin for the FIR emission |journal=[[Astronomy & Astrophysics]] |volume=265 |issue=2 |pages=429–436 |bibcode=1992A&A...265..429A |issn=0004-6361}}</ref> However the companion galaxy is located 23 arcsecs north and doesn't seem to tidally connect with Markarian 876, therefore the latter's distorted morphology is likely caused by a [[galaxy merger]].<ref name="hutchings neff 1992" />
The mass of the [[black hole]] in the center of Markarian 876 is estimated to be (2.2 ± 1.0) × 10<sup>8</sup> [[Solar mass|M<sub>☉</sub>]] based on an optical [[Reverberation mapping|reverberation]] campaign.<ref>{{Cite journal |last=Landt |first=Hermine |last2=Mitchell |first2=Jake A. J. |last3=Ward |first3=Martin J. |last4=Mercatoris |first4=Paul |last5=Pott |first5=Jörg-Uwe |last6=Horne |first6=Keith |last7=Hernández Santisteban |first7=Juan V. |last8=Malhotra |first8=Daksh |last9=Cackett |first9=Edward M. |last10=Goad |first10=Michael R. |last11=Romero Colmenero |first11=Encarni |last12=Winkler |first12=Hartmut |date=March 2023 |title=A Complex Dust Morphology in the High-luminosity AGN Mrk 876 |journal=[[The Astrophysical Journal]] |volume=945 |issue=1 |pages=62 |arxiv=2302.01678 |bibcode=2023ApJ...945...62L |doi=10.3847/1538-4357/acb92d |issn=0004-637X |doi-access=free}}</ref>
An [[Spectral line|emission line]] is found connected with the source of the galaxy with a [[Rest frame|rest-frame]] [[energy]] of 4.80<sup>+0.05</sup><sub>-0.04</sub> [[Electronvolt|keV]].<ref>{{Cite journal |last=Bottacini |first=Eugenio |last2=Orlando |first2=Elena |last3=Greiner |first3=Jochen |last4=Ajello |first4=Marco |last5=Moskalenko |first5=Igor |last6=Persic |first6=Massimo |date=17 December 2014 |title=An extreme gravitationally redshifted iron line at 4.8 KeV in Mrk 876 |journal=[[The Astrophysical Journal]] |volume=798 |issue=1 |pages=L14 |doi=10.1088/2041-8205/798/1/L14 |issn=2041-8213|arxiv=1412.3112 }}</ref>
== References == <references />
== External links == {{wikiSky}} *[http://simbad.u-strasbg.fr/simbad/sim-id?Ident=Mrk%20876 Mrk 876 on SIMBAD]
{{Draco (constellation)}} [[Category:Markarian galaxies|0876]] [[Category:Seyfert galaxies]] [[Category:Active galaxies]] [[Category:Elliptical galaxies]] [[Category:Draco (constellation)]] [[Category:Principal Galaxies Catalogue objects|057553]]