Three very young HgMn stars in the Orion OB1 association

被引：15
|
作者：
Woolf, VM
Lambert, DL
机构：
[1] Univ Texas, Dept Astron, Austin, TX 78712 USA
[2] Univ Texas, McDonald Observ, Austin, TX 78712 USA
来源：
ASTROPHYSICAL JOURNAL | 1999年 / 520卷 / 01期
基金：
美国国家科学基金会;
关键词：
open clusters and associations : individual (Orion OB1); stars : abundances; stars : chemically peculiar; stars; individual; (BD-0; degrees; 984; HD; 37492; 37886);
D O I：
10.1086/312146
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We report the detection of three mercury-manganese stars in the Orion OB1 association. HD 37886 and ED -0 degrees 984 are in the approximately 1.7 million year old Orion OB1b. HD 37492 is in the approximately 4.6 million year old Orion OB1c. Orion OB1b is now the youngest cluster with known HgMn star members. This places an observational upper limit on the timescale needed to produce the chemical peculiarities seen in mercury-manganese stars, which should help in the search for the cause or causes of the peculiar abundances in HgMn and other chemically peculiar upper main-sequence stars.
引用
收藏
页码：L55 / L58
页数：4
相关论文
共 50 条
  • [31] Statistics of Wide Pre-main-sequence Binaries in the Orion OB1 Association
    Tokovinin, Andrei
    Petr-Gotzens, Monika G.
    Briceno, Cesar
    ASTRONOMICAL JOURNAL, 2020, 160 (06):
  • [32] Young stars in the camelopardalis dust and molecular clouds. I. The cam OB1 association
    Straizys, V.
    Laugalys, V.
    BALTIC ASTRONOMY, 2007, 16 (02) : 167 - 182
  • [33] The neutral gas in the environs of the Wolf Rayet stars in the Circinus OB1 association
    Giacani, E
    Dubner, G
    ASTRONOMY & ASTROPHYSICS, 2004, 413 (01) : 225 - 231
  • [34] SPECTRAL CLASSIFICATION OF STARS IN LAC OB1
    GUETTER, HH
    ASTRONOMICAL JOURNAL, 1976, 81 (12): : 1120 - 1124
  • [35] The stars in Camelopardalis OB1: Their distance and evolutionary history
    Lyder, DA
    ASTRONOMICAL JOURNAL, 2001, 122 (05): : 2634 - 2643
  • [36] A Transitional Disk around an Intermediate-mass Star in the Sparse Population of the Orion OB1 Association
    Perez-Blanco, Alice
    Mauco, Karina
    Hernandez, Jesus
    Calvet, Nuria
    Espaillat, Catherine
    McClure, Melissa
    Briceno, Cesar
    Robinson, Connor
    Feldman, Daniel
    Villarreal, Luis
    D'Alessio, Paola
    ASTROPHYSICAL JOURNAL, 2018, 867 (02):
  • [37] PHOTOMETRIC STUDIES OF STARS IN ORI OB1 (BELT)
    GUETTER, HH
    ASTRONOMICAL JOURNAL, 1979, 84 (12): : 1846 - 1847
  • [38] Very low mass stars and brown dwarf candidates in Orion OB1a and OB1b
    Walter, FM
    Sherry, WH
    Wolk, SJ
    BROWN DWARFS, 2003, (211): : 119 - 122
  • [39] SPECTROSCOPIC STUDIES OF STARS IN ORI OB1 (BELT)
    GUETTER, HH
    ASTRONOMICAL JOURNAL, 1981, 86 (07): : 1057 - 1068
  • [40] Herschel PACS Observations of 4-10 Myr Old Classical T Tauri Stars in Orion OB1
    Mauco, Karina
    Briceno, Cesar
    Calvet, Nuria
    Hernandez, Jesus
    Ballesteros-Paredes, Javier
    Gonzalez, Omaira
    Espaillat, Catherine C.
    Li, Dan
    Telesco, Charles M.
    Jose Downes, Juan
    Macias, Enrique
    Qi, Chunhua
    Michel, Raul
    D'Alessio, Paola
    Ali, Babar
    ASTROPHYSICAL JOURNAL, 2018, 859 (01):
12345