NGC 752

Template:Short description Template:Infobox cluster

Map showing the location of NGC 752

NGC 752 (also known as Caldwell 28) is an open cluster in the constellation Andromeda. The cluster was discovered by Caroline Herschel in 1783 and cataloged by her brother William Herschel in 1786, although an object that may have been NGC 752 was described by Giovanni Batista Hodierna before 1654.<ref name=cseligman>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>

The large cluster lies 1,400 light-years away from the Earth and is easily seen through binoculars, although it may approach naked eye visibility under good observing conditions. A telescope reveals about 60 stars no brighter than 9th magnitude within NGC 752.<ref name="nightsky" /><ref>Frommert, Kronberg, SEDS: NGC 752</ref>

ComponentsEdit

The most up-to-date research lists 302 stars as members of NGC 752.<ref name=gaysin2022/> Since the age of the cluster is Template:Val, they are mainly low mass stars on the main sequence or red giants, with a main sequence turnoff at about F0. A blue straggler star is also present, along with some spectroscopic binaries and variable stars.<ref name=Agüeros2018/><ref name=Belloni1996/> The detached eclipsing binary DS Andromedae is a member of this cluster.<ref name=Sandquist>Template:Cite journal</ref>

ImagesEdit

File:Stack 15frames 675s.png

NGC 752

Notable starsEdit

Name	Right ascension	Declination	Apparent magnitude (V)	Spectral type	Database references	Relevance
TYC 2816-327-1	01^h 56^m 08.9572^s	+37° 39' 52.7528"	10.41	F5.3V<ref name=Agüeros2018/>	Simbad	Gamma Doradus variable
DS Andromedae	01^h 57^m 46.0561^s	+38° 04' 28.43112"	10.44 - 10.93 (variable)	F3IV-V + G0V (double)	Simbad	Beta Lyrae variable
BD+37 416	01^h 56^m 10.3002^s	+37° 45' 00.0301"	10.00	F2III	Simbad	Spectroscopic binary
BD+37 416B	01^h 56^m 11.1020^s	+37° 45' 11.3889"	11.19	F0	Simbad	Candidate companion of BD+37 416
TYC 2816-1390-1	01^h 56^m 12.8772^s	+38° 01' 43.1869"	10.88	F3V	Simbad	Spectroscopic binary
TYC 2319-568-1	01^h 56^m 57.5899^s	+37° 23' 20.6538"	10.6	F2V	Simbad	Spectroscopic binary
2MASS J01571216+3756048	01^h 57^m 12.1584^s	+37° 56' 04.7909"	11.9	G5.0V<ref name=Agüeros2018/>	Simbad	Spectroscopic binary
BD+36 364	01^h 57^m 25.9968^s	+37° 43' 19.6966"	10.4	F2III	Simbad	Spectroscopic binary
QX Andromedae	01^h 57^m 57.7818^s	+37° 48' 22.4500"	11.28 - 11.50 (variable)	F5	Simbad	W Ursae Majoris variable
2MASS J01575883+3741269	01^h 57^m 58.8386^s	+37° 41' 26.9575"	12.31	F8	Simbad	Spectroscopic binary
TYC 2816-691-1	01^h 58^m 16.8604^s	+37° 38' 15.9955"	11.21	F5V	Simbad	Spectroscopic binary
V447 Andromedae	01^h 58^m 53.9322^s	+37° 34' 42.5263"	13.39	K3.0<ref name=Agüeros2018/>	Simbad	RS Canum Venaticorum variable
BD+36 348	01^h 55^m 27.6831^s	+37° 34' 04.6482"	10.14	F2V	Simbad	Spectroscopic binary
BD+37 410	01^h 55^m 29.2926^s	+37° 50' 26.3171"	9.94	F4III	Simbad	Eclipsing binary<ref name=Sandquist/>
BD+37 418	01^h 56^m 18.8954^s	+37° 58' 00.4602"	8.97	G9III	Simbad	Spectroscopic binary
HD 11812	01^h 56^m 49.7623^s	+38° 01' 21.6883"	9.13	F3V	Simbad	In the HD catalogue
HD 11811	01^h 56^m 50.4330^s	+38° 01' 58.1400"	8.91	G2V	Simbad	Spectroscopic binary
BD+37 431	01^h 57^m 36.2116^s	+37° 45' 10.1549"	9.85	F2III	Simbad	Spectroscopic binary
BD+36 367	01^h 57^m 37.3494^s	+37° 29' 27.6181"	9.75	A0III	Simbad	Blue straggler<ref name=Belloni1996/>
BD+36 368	01^h 57^m 37.5965^s	+37° 39' 37.9032"	8.85	K1III	Simbad	Spectroscopic binary
BD+37 439	01^h 57^m 59.3462^s	+37° 54' 53.9679"	9.85	F2III	Simbad	Spectroscopic binary
BD+37 444	01^h 58^m 36.8870^s	+37° 45' 10.7241"	9.62	F2V	Simbad	Spectroscopic binary
TYC 2816-771-1	01^h 58^m 40.0620^s	+37° 38' 05.2030"	12.43	F2V	Simbad	Spectroscopic binary
2MASS J01591990+3723230	01^h 59^m 19.8967^s	+37° 23' 23.0364"	12.893	–	Simbad	Spectroscopic binary

ReferencesEdit

Template:Reflist

External linksEdit

Template:Commonscat

SEDS – NGC 752
perseus.gr – NGC 752 in a hires LRGB CCD image
Template:WikiSky

Template:Caldwell catalogue Template:NGC10 Template:Andromeda (constellation) Template:Sky