2018AstL...44...35P

Query : 2018AstL...44...35P

2018AstL...44...35P - Astron. Lett., 44, 35-48 (2018/January-0)

Spotted surface structure of the active giant PZ Mon.

PAKHOMOV Yu.V., ANTONYUK K.A., BONDAR N.I., PIT N.V., REVA I.V. and KUSAKIN A.V.

Abstract (from CDS):

Based on our photometric observations in 2015-2016 and archival photometric data for the active red giant PZ Mon, we have found the main characteristics of the stellar surface: the unspotted surface temperature T_eff=4730K, the spot temperature T_s=3500K, and the relative spot area from 30 to 40%. The best agreement with the observations has been achieved in our three-spot model including a cool polar spot with a temperature of ∼3500K as well as large and small warm spots with a temperature of ∼4500K. The stable polar spot is responsible for the long-period brightness variations. Its presence is confirmed by an analysis of the TiO 7054Å molecular band. The small-amplitude 34-day variability is attributable to the warm spots located on the side of the secondary component, which determine the relatively stable active longitude.

Abstract Copyright: ∼

Journal keyword(s): variable stars

CDS comments: 2018PAZh...44...38P

Simbad objects: 1

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Number of rows : 1

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2026	#notes
1	V* PZ Mon	RG*	06 48 21.0659534040	+01 13 08.309040528		10.18	9.60			K2III	47	0

Query : 2018AstL...44...35P

Basic data :

V* PZ Mon -- Red Giant Branch star

* (HD,AG,...), V* (V*,AAVSO), RG* (2015MNRAS), Er* ([GKL99]), X (2E), NIR (2MASS)

06 48 21.0659534040 +01 13 08.309040528 (Optical) [ 0.0161 0.0159 90 ] A 2020yCat.1350....0G

06 45 45.9388041789 +01 16 32.596354184 [ 0.0161 0.0159 90 ]

211.4951859686133 -00.1308396482402 [ 0.0161 0.0159 90 ]

-10.012 0.329 [0.019 0.017 90] A 2020yCat.1350....0G

1.5037 [0.0196] A 2020yCat.1350....0G

K2III C 2015MNRAS.446...56P

B 10.18 [0.03] D 2000A&A...355L..27H

V 9.60 [~] C 2002yCat.2237....0D

G 8.851666 [0.004212] C 2020yCat.1350....0G

J 6.875 [0.030] C 2003yCat.2246....0C

H 6.305 [0.027] C 2003yCat.2246....0C

K 6.135 [0.020] C 2003yCat.2246....0C

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`HD 289114`	`HIC 32621`	*`SV HV 11110`**	`AAVSO 0643+01`
`AG+01 755`	`HIP 32621`	`TIC 234275925`	`Gaia DR3 3125697122940209792`
`BD+01 1522`	`JP11 5`	`TYC 148-872-1`	`Gaia DR1 3125697118641603328`
`2E 1734`	`2MASS J06482107+0113081`	*`V PZ Mon`**	`Gaia DR2 3125697122940209792`
`2E 0645.7+0116`	`PPM 151277`	`YZ 1 2419`
`GSC 00148-00872`	`SAO 114440`	`[GKL99] 163`

References (47 between 1850 and 2026) (Total 47)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).

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`HD 289114`	`AG+01 755`	`BD+01 1522`	`2E 1734`	`GSC 00148-00872`
`HIC 32621`	`HIP 32621`	`2MASS J06482107+0113081`	`PPM 151277`	`SAO 114440`
`TYC 148-872-1`	*`V PZ Mon`**	`[GKL99] 163`	`Gaia DR3 3125697122940209792`	`Gaia DR1 3125697118641603328`
`Gaia DR2 3125697122940209792`

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