Photometric update of Î´ Scuti stars : ZZ Microscopium

Surjit S. Wadhwa; Ain Y. De Horta; Nicholas F. H. Tothill; Miroslav D. Filipovic

doi:10.3847/2515-5172/acfc45

Photometric update of Î´ Scuti stars : ZZ Microscopium

Surjit S. Wadhwa, Ain Y. De Horta, Nicholas F. H. Tothill, Miroslav D. Filipovic

Western Sydney University

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Abstract

Multi-color CCD photometric update of the bright high amplitude Î´ Scuti star ZZ Microscopium (ZZ Mic) is presented. We find that the B band has the highest amplitude at 0.47"‰mag while the V band amplitude is smaller at 0.38"‰mag. The revised pulsation period 0.06717850"‰day is similar to most recent previous estimates. We did not detect secondary mode pulsations. We find the temperature of the star varies by 720"‰K during pulsations and its radius changes by 0.1"‰Râ˜‰. We estimate the mass of ZZ Mic as 1.93"‰Mâ˜‰ and surface gravity g as 4.19.

Original language	English
Article number	198
Number of pages	5
Journal	Research Notes of the AAS
Volume	7
Issue number	9
DOIs	https://doi.org/10.3847/2515-5172/acfc45
Publication status	Published - 2023

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Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence (https://creativecommons.org/licenses/by/4.0/). Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

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title = "Photometric update of {\^I}´ Scuti stars : ZZ Microscopium",

abstract = "Multi-color CCD photometric update of the bright high amplitude {\^I}´ Scuti star ZZ Microscopium (ZZ Mic) is presented. We find that the B band has the highest amplitude at 0.47{"}‰mag while the V band amplitude is smaller at 0.38{"}‰mag. The revised pulsation period 0.06717850{"}‰day is similar to most recent previous estimates. We did not detect secondary mode pulsations. We find the temperature of the star varies by 720{"}‰K during pulsations and its radius changes by 0.1{"}‰R{\^a}˜‰. We estimate the mass of ZZ Mic as 1.93{"}‰M{\^a}˜‰ and surface gravity g as 4.19.",

author = "Wadhwa, {Surjit S.} and {De Horta}, {Ain Y.} and Tothill, {Nicholas F. H.} and Filipovic, {Miroslav D.}",

year = "2023",

doi = "10.3847/2515-5172/acfc45",

language = "English",

volume = "7",

journal = "Research Notes of the AAS",

issn = "2515-5172",

publisher = "IOP Publishing",

number = "9",

}

TY - JOUR

T1 - Photometric update of Î´ Scuti stars : ZZ Microscopium

AU - Wadhwa, Surjit S.

AU - De Horta, Ain Y.

AU - Tothill, Nicholas F. H.

AU - Filipovic, Miroslav D.

PY - 2023

Y1 - 2023

N2 - Multi-color CCD photometric update of the bright high amplitude Î´ Scuti star ZZ Microscopium (ZZ Mic) is presented. We find that the B band has the highest amplitude at 0.47"‰mag while the V band amplitude is smaller at 0.38"‰mag. The revised pulsation period 0.06717850"‰day is similar to most recent previous estimates. We did not detect secondary mode pulsations. We find the temperature of the star varies by 720"‰K during pulsations and its radius changes by 0.1"‰Râ˜‰. We estimate the mass of ZZ Mic as 1.93"‰Mâ˜‰ and surface gravity g as 4.19.

AB - Multi-color CCD photometric update of the bright high amplitude Î´ Scuti star ZZ Microscopium (ZZ Mic) is presented. We find that the B band has the highest amplitude at 0.47"‰mag while the V band amplitude is smaller at 0.38"‰mag. The revised pulsation period 0.06717850"‰day is similar to most recent previous estimates. We did not detect secondary mode pulsations. We find the temperature of the star varies by 720"‰K during pulsations and its radius changes by 0.1"‰Râ˜‰. We estimate the mass of ZZ Mic as 1.93"‰Mâ˜‰ and surface gravity g as 4.19.

UR - https://hdl.handle.net/1959.7/uws:73084

U2 - 10.3847/2515-5172/acfc45

DO - 10.3847/2515-5172/acfc45

M3 - Article

SN - 2515-5172

VL - 7

JO - Research Notes of the AAS

JF - Research Notes of the AAS

IS - 9

M1 - 198

ER -

Photometric update of Î´ Scuti stars : ZZ Microscopium

Abstract

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