V718 Persei

V718 Persei
	; A near-infrared (I band) light curve for V718 Persei, adapted from Grinin et al. (2008)
Observation data; Epoch J2000.0 Equinox J2000.0
Constellation	Perseus
Right ascension	03h 44m 39.241s
Declination	+32° 07′ 35.52″
Apparent magnitude (V)	15.82
Characteristics
Spectral type	K3V
Variable type	Eclipsing system
Astrometry
Distance	≈1043 ly ; (≈320 pc)
Details
Mass	1.6 M☉
Radius	≈2.3 R☉
Luminosity	3.4 L☉
Temperature	5100-5350 K
Age	5 million years
Other designations
	V718 Per, CXOPZ J034439.2+320736, CXOPZ 153, 2MASS J03443924+320735
Database references
SIMBAD	data

V718 Persei is a young star in the constellation of Perseus, located in the young open cluster IC 348. The star has several designations derived from the cluster in which it belongs (H 187, TJ 108, HMW 15, LRL 35, NTC 5401, LNB 90—all require the prefix "IC 348"). The star shows hints of an occulting body of unclear nature, likely planetary.

A planetary system?[edit]

In 2008 Grinin et al. invoke the possible presence of a substellar object to explain peculiar and periodic eclipses occurring to the young star every 4.7 years.^[1] The presence of a planetary object is still invoked in a recent research.^[3] They infer a maximum mass of 6 times that of Jupiter for the perturbing object and an orbital separation of 3.3 astronomical units.

The V718 Persei planetary system
Companion (in order from star)	Mass	Semimajor axis (AU)	Orbital period (days)	Eccentricity	Inclination	Radius
b (unconfirmed)	≤6 M_J	3.3	1715.5	0	—	—

References[edit]

^ ^a ^b ^c ^d ^e ^f Grinin; Stempels, H. C.; Gahm, G. F.; Sergeev, S.; Arkharov, A.; Barsunova, O.; Tambovtseva, L. (2008). "The unusual pre-main-sequence star V718 Per (HMW 15)". Astronomy and Astrophysics. 489 (3): 1233–1238. arXiv:0808.1069. Bibcode:2008A&A...489.1233G. doi:10.1051/0004-6361:200810349. S2CID 59133715.
^ "V0718 Per". The International Variable Star Index. AAVSO. Retrieved 17 February 2022.
^ Herbst; et al. (2010). "The Light Curve of V713 Per (HMW 15): Evidence for Gravitational Sculpting by an Object Embedded in the Circumstellar Disk". American Astronomical Society, AAS Meeting#215,#429.31. 215: 429.31. Bibcode:2010AAS...21542931H.

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[Grinin_et_al.-1] ^ ^a ^b ^c ^d ^e ^f Grinin; Stempels, H. C.; Gahm, G. F.; Sergeev, S.; Arkharov, A.; Barsunova, O.; Tambovtseva, L. (2008). "The unusual pre-main-sequence star V718 Per (HMW 15)". Astronomy and Astrophysics. 489 (3): 1233–1238. arXiv:0808.1069. Bibcode:2008A&A...489.1233G. doi:10.1051/0004-6361:200810349. S2CID 59133715.

[IVSI-2] "V0718 Per". The International Variable Star Index. AAVSO. Retrieved 17 February 2022.

[Herbst2010-3] Herbst; et al. (2010). "The Light Curve of V713 Per (HMW 15): Evidence for Gravitational Sculpting by an Object Embedded in the Circumstellar Disk". American Astronomical Society, AAS Meeting#215,#429.31. 215: 429.31. Bibcode:2010AAS...21542931H.

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