34 Persei

{{Short description|Binary star system in the constellation Perseus}}

{{Starbox image

| image =

{{Location mark

|image=Perseus constellation map.svg|alt=|float=center|width=280

|label=|position=right

|mark=Red circle.svg|mark_width=8|mark_link=34 Persei

|x=530|y=433

}}

| caption = Location of 34 Persei (circled)

}}

{{Starbox observe

| epoch = J2000

| constell = Perseus

| ra = {{RA|03|29|22.05019}}

| dec = {{DEC|49|30|32.2114}}

| appmag_v = 4.67 {{nowrap|(4.76 + 7.18)}}

}}

{{Starbox character

| class = B3V

| b-v = −0.09

| u-b = −0.57

|type=Main sequence}}

{{Starbox astrometry

| radial_v = −3.50

| prop_mo_ra = +22.20

| prop_mo_dec = −29.49

| parallax = 6.05

| p_error = 0.36

| parallax_footnote =

| absmag_v = −1.62

}}

{{Starbox detail

| component1 = 32 Per A

| mass = {{Val|6.9|0.1}}

| radius = 3.1

| temperature = 16,421

| luminosity = 671

| gravity = 4.076

| metal_fe =

| rotational_velocity = 200

| age_myr = {{Val|29.3|3.4}}

}}

{{Starbox catalog

| names = {{odlist | F=34 Per | BD=+49°945 | FK5=1549 | GC=4133 | HD=21428 | HIP=16244 | HR=1044 | SAO=38872 | CCDM=J03294+4931AB | WDS=J03294+4931AB }}

}}

{{Starbox reference

| Simbad = 34+Per

}}

34 Persei is a binary star system in the northern constellation of Perseus. It is visible to the naked eye as a faint, blue-white hued point of light with a combined apparent visual magnitude of 4.67. The system is located approximately 540 light years away from the Sun based on parallax, but it is drifting closer with a radial velocity of −3.5 km/s. It is a likely member of the Alpha Persei Cluster.

The primary member, designated component A, is a B-type main-sequence star with a stellar classification of B3V and visual magnitude 4.76. It is an estimated 29 million years old with a high rate of spin, showing a projected rotational velocity of 200 km/s. The star has 6.9 times the mass of the Sun and about 3.1 times the Sun's radius. It is radiating 671 times the Sun's luminosity from its photosphere at an effective temperature of 16,421 K.

The secondary companion, component B, has an angular separation of {{Val|0.6|ul=arcsecond}} from the primary and visual magnitude of 7.34.

References

{{reflist|refs=

{{cite journal

| title=Stellar Membership and Dusty Debris Disks in the α Persei Cluster

| display-authors=1 | last1=Zuckerman | first1=B.

| last2=Melis | first2=Carl | last3=Rhee | first3=Joseph H.

| last4=Schneider | first4=Adam | last5=Song | first5=Inseok

| journal=The Astrophysical Journal

| arxiv=1204.3950 | bibcode=2012ApJ...752...58Z

| doi=10.1088/0004-637X/752/1/58 | s2cid=119207634 }}

{{cite journal

| title=Validation of the new Hipparcos reduction

| journal=Astronomy and Astrophysics

| volume=474 | issue=2 | pages=653–664 | year=2007

| last1=Van Leeuwen | first1=F.

| bibcode=2007A&A...474..653V | arxiv=0708.1752

| doi=10.1051/0004-6361:20078357

| s2cid=18759600

}} [http://vizier.u-strasbg.fr/viz-bin/VizieR-S?HIP%2016244 Vizier catalog entry]

{{cite journal

| last1=Eggleton | first1=P. P. | last2=Tokovinin | first2=A. A.

| title=A catalogue of multiplicity among bright stellar systems

| journal=Monthly Notices of the Royal Astronomical Society

| volume=389 | issue=2 | pages=869–879 | date=September 2008

| bibcode=2008MNRAS.389..869E | arxiv=0806.2878

| doi=10.1111/j.1365-2966.2008.13596.x | doi-access=free | s2cid=14878976 }}

{{cite journal

| display-authors=1 | last1=Tetzlaff | first1=N.

| last2=Neuhäuser | first2=R. | last3=Hohle | first3=M. M.

| title=A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun

| journal=Monthly Notices of the Royal Astronomical Society

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| doi=10.1111/j.1365-2966.2010.17434.x | doi-access=free | bibcode=2011MNRAS.410..190T | arxiv=1007.4883 | s2cid=118629873 }}

{{cite journal

| last1=Anderson | first1=E. | last2=Francis | first2=Ch.

| title=XHIP: An extended hipparcos compilation

| journal=Astronomy Letters

| volume=38 | issue=5 | pages=331 | year=2012

| bibcode=2012AstL...38..331A | arxiv=1108.4971

| doi=10.1134/S1063773712050015

| s2cid=119257644 }} [http://vizier.u-strasbg.fr/viz-bin/VizieR-4?-source=V/137D/XHIP&HIP=16244 Vizier catalog entry]

{{cite journal

| last1=Hoffleit | first1=D. | last2=Warren | first2=W. H.

| title=Bright Star Catalogue | edition=5th Revised

| journal=VizieR On-line Data Catalog: V/50. Originally Published in: 1964BS....C......0H

| volume=5050 | year=1995

| bibcode=1995yCat.5050....0H }}

{{cite journal

| last1=Mallama | first1=A.

| title=Sloan Magnitudes for the Brightest Stars

| journal=The Journal of the American Association of Variable Star Observers

| volume=42 | pages=443 | year=2014

| issue=2

| bibcode=2014JAVSO..42..443M

}}[http://vizier.u-strasbg.fr/viz-bin/VizieR-4?-source=J/other/JAVSO/42.443/ugriz&HD=021428 Vizier catalog entry]

{{Cite journal

| last1=Gontcharov | first1=G. A.

| title=Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system

| journal=Astronomy Letters

| volume=32 | issue=11 | pages=759–771 | year=2006

| bibcode=2006AstL...32..759G | arxiv=1606.08053

| doi=10.1134/S1063773706110065 | s2cid=119231169

}}

{{cite journal

| last1=David | first1=Trevor J. | last2=Hillenbrand | first2=Lynne A.

| title=The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets

| journal=The Astrophysical Journal

| volume=804 | issue=2 | pages=146 | year=2015

| bibcode=2015ApJ...804..146D | arxiv=1501.03154

| doi=10.1088/0004-637X/804/2/146 | s2cid=33401607 }}

{{cite journal

| last1=Mason | first1=Brian D. | last2=Wycoff | first2=Gary L.

| last3=Hartkopf | first3=William I. | last4=Douglass | first4=Geoffrey G.

| last5=Worley | first5=Charles E. | display-authors=1

| title=The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog

| journal=The Astronomical Journal

| volume=122 | issue=6 | pages=3466 | year=2001

| bibcode=2001AJ....122.3466M | doi=10.1086/323920