The episodic dust-making Wolf-Rayet star HD 38030 in the Large Magellanic Cloud

被引：4

作者：

Williams, Peredur M. ^{[1
]}

Morrell, Nidia, I ^{[2
]}

Boutsia, Konstantina ^{[2
]}

Massey, Philip ^{[3
,4
]}

机构：

[1] Univ Edinburgh, Inst Astron, Royal Observ, Edinburgh EH9 3HJ, Midlothian, Scotland

[2] Carnegie Observ, Las Campanas Observ, Casilla 601, La Serena, Chile

[3] Lowell Observ, 1400 W Mars Hill Rd, Flagstaff, AZ 86011 USA

[4] No Arizona Univ, Dept Astron & Planetary Sci, Flagstaff, AZ 86011 USA

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2021年 / 505卷 / 04期

基金：

美国国家航空航天局;

关键词：

binaries: spectroscopic; circumstellar matter; stars: individual: HD 38030; stars: winds; stars: Wolf-Rayet; INFRARED-SURVEY-EXPLORER; X-RAY; PHOTOMETRY; STELLAR; NEOWISE; EMISSION; CATALOG; GRAINS; DENIS; WINDS;

D O I：

10.1093/mnras/stab1625

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Mid-infrared photometry of the Wolf-Rayet star HD 38030 in the Large Magellanic Cloud from the NEOWISE-R mission show it to have undergone a dust-formation episode in 2018 and the dust to have cooled in 2019-20. New spectroscopy with the MagE spectrograph on the Magellan I Baade Telescope in 2019 and 2020 show absorption lines attributable to a companion of type near O9.7III-IV. We found a significant shift in the radial velocity of the C IV lambda lambda 5801-12 blend compared with the RVs measured in 1984 and 1993. The results combine to suggest that HD 38030 is a colliding-wind binary having short-lived dust formation episodes, like the Galactic systems WR 140 and WR 19, but at intervals in excess of 20 yr.

引用

下载

页码：5029 / 5037

页数：9

共 50 条

[41] GINGA OBSERVATIONS OF A WOLF-RAYET STAR HD-193793
KOYAMA, K
KAWADA, M
TAKANO, S
IKEUCHI, S
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 1990, 42 (01) : L1 - L5
[42] Investigation of the spectroscopic variability of the Wolf-Rayet star HD 192163
D. N. Rustamov
Astronomy Letters, 2010, 36 : 355 - 361
[43] THE WIND GEOMETRY OF THE WOLF-RAYET STAR HD-191765
SCHULTELADBECK, RE
NORDSIECK, KH
TAYLOR, M
BJORKMAN, KS
MAGALHAES, AM
WOLFF, MJ
ASTROPHYSICAL JOURNAL, 1992, 387 (01): : 347 - 356
[44] Wolf-rayet binaries in the Magellanic Clouds and implications for massive-star evolution - I. Small Magellanic Cloud
Foellmi, C
Moffat, AFJ
Guerrero, MA
Markevitch, M
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2003, 338 (02) : 360 - 388
[45] Constraining GRB progenitor models by probing Wolf-Rayet wind geometries in the Large Magellanic Cloud
Vink, Jorick S.
ASTRONOMY & ASTROPHYSICS, 2007, 469 (02) : 707 - 711
[46] WOLF-RAYET STARS IN THE MAGELLANIC CLOUDS .5. BINARIES IN THE SMALL MAGELLANIC CLOUD
MOFFAT, AFJ
ASTROPHYSICAL JOURNAL, 1988, 330 (02): : 766 - 775
[47] Fundamental parameters of Wolf-Rayet stars .6. Large magellanic cloud WNL stars
Crowther, PA
Smith, LJ
ASTRONOMY & ASTROPHYSICS, 1997, 320 (02) : 500 - 524
[48] CONDENSATION OF DUST AROUND THE WOLF-RAYET STAR WR 125
WILLIAMS, PM
VANDERHUCHT, KA
BOUCHET, P
SPOELSTRA, TAT
EENENS, PRJ
GEBALLE, TR
KIDGER, MR
CHURCHWELL, E
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1992, 258 (03) : 461 - 472
[49] REMARKABLE LONG-TERM CHANGES IN THE SMALL MAGELLANIC CLOUD WOLF-RAYET SYSTEM HD-5980
KOENIGSBERGER, G
MOFFAT, AFJ
STLOUIS, N
AUER, LH
DRISSEN, L
SEGGEWISS, W
ASTROPHYSICAL JOURNAL, 1994, 436 (01): : 301 - 311
[50] AN EMPIRICAL-MODEL FOR THE WOLF-RAYET STAR HD-50896
HILLIER, DJ
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 1987, 63 (04): : 965 - 981

← 1 2 3 4 5 →