Be STARS IN THE OPEN CLUSTER NGC 6830

被引：0

作者：

Yu, Po-Chieh ^{[1
,2
]}

Lin, Chien-Cheng ^{[1
,3
]}

Lin, Hsing-Wen ^{[1
]}

Lee, Chien-De ^{[1
]}

Konidaris, Nick ^{[4
]}

Ngeow, Chow-Choong ^{[1
]}

Ip, Wing-Huen ^{[1
]}

Chen, Wen-Ping ^{[1
,5
,6
]}

Chen, Hui-Chen ^{[7
]}

Malkan, Matthew A. ^{[2
]}

Chang, Chan-Kao ^{[1
]}

Laher, Russ ^{[8
]}

Huang, Li-Ching ^{[1
]}

Cheng, Yu-Chi ^{[1
]}

Edelson, Rick ^{[9
]}

Ritter, Andreas ^{[1
,10
]}

Quimby, Robert ^{[11
]}

Ben-Ami, Sagi ^{[12
]}

Ofek, Eran. O. ^{[12
]}

Surace, Jason ^{[8
]}

Kulkarni, Shrinivas R. ^{[13
]}

机构：

[1] Natl Cent Univ, Grad Inst Astron, 300 Jhongda Rd, Jhongli 32001, Taiwan

[2] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90024 USA

[3] Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, 80 Nandan Rd, Shanghai 200030, Peoples R China

[4] CALTECH, Cahill Ctr Astron & Astrophys, 1200 E Calif Blvd, Pasadena, CA 91125 USA

[5] Natl Cent Univ, Inst Space Sci, 300 Jhongda Rd, Jhongli 32001, Taiwan

[6] Natl Cent Univ, Dept Phys, 300 Jhongda Rd, Jhongli 32001, Taiwan

[7] Minist Sci & Technol, Dept Nat Sci & Sustainable Dev, 106,Sec 2,Heping E Rd, Taipei 10622, Taiwan

[8] CALTECH, Spitzer Sci Ctr, M-S 314-6, Pasadena, CA 91125 USA

[9] Univ Maryland, Dept Astron, College Pk, MD 20742 USA

[10] Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA

[11] Univ Tokyo, Kavli Inst Phys & Math Universe, Kashiwanoha 5-1-5, Kashiwa, Chiba, Japan

[12] Weizmann Inst Sci, Dept Particle Phys & Astrophys, IL-76100 Rehovot, Israel

[13] CALTECH, Div Phys Math & Astron, Pasadena, CA 91125 USA

来源：

ASTRONOMICAL JOURNAL | 2016年 / 151卷 / 05期

基金：

美国国家航空航天局; 美国国家科学基金会;

关键词：

galaxies: star clusters: individual (NGC 6830); instrumentation: spectrographs; stars:; emission-line; Be; CIRCUMSTELLAR ENVELOPES; EVOLUTIONARY STATUS; ZETA-TAURI; VARIABILITY; SOUTHERN; DISKS; PHOTOMETRY; SPECTROSCOPY; ROTATION; GEOMETRY;

D O I：

10.3847/0004-6256/151/5/121

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the discovery of two new Be stars, and re-identify one known Be star in the open cluster NGC 6830. Eleven H alpha emitters were discovered using the H alpha imaging photometry of the Palomar Transient Factory Survey. Stellar membership of the candidates was verified with photometric and kinematic information using 2MASS data and proper motions. The spectroscopic confirmation was carried out by using the Shane 3 m telescope at the Lick observatory. Based on their spectral types, three Ha emitters were confirmed as Be stars with Ha equivalent widths greater than -10 angstrom. Two objects were also observed by the new spectrograph spectral energy distribution-machine (SED-machine) on the Palomar 60-inch Telescope. The SED-machine results show strong Ha emission lines, which are consistent with the results of the Lick observations. The high efficiency of the SED-machine can provide rapid observations for Be stars in a comprehensive survey in the future.

引用

页数：11

共 50 条

[1] VARIABLE STARS IN THE OPEN CLUSTER NGC 7142
Sandquist, Eric L.
Serio, Andrew W.
Shetrone, Matthew
[J]. ASTRONOMICAL JOURNAL, 2011, 142 (06):
[2] NGC 7419: An open cluster rich in Be stars
Pigulski, A
Kopacki, G
[J]. ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES, 2000, 146 (03): : 465 - 469
[3] Variable stars in the open cluster NGC 2141
Luo, Yang-Ping
[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS, 2015, 15 (05) : 733 - 741
[4] Variable Stars in the Open Cluster NGC 7044
Kopacki, G.
Drobek, D.
Kolaczkowski, Z.
Polubek, G.
[J]. ACTA ASTRONOMICA, 2008, 58 (04): : 373 - 388
[5] Variable stars in the open cluster NGC 2141
Yang-Ping Luo
[J]. Research in Astronomy and Astrophysics, 2015, 15 (05) : 733 - 741
[6] Pulsating stars in the open cluster NGC 1817
Arentoft, T
Freyhammer, LM
Bouzid, MY
Sterken, C
Frandsen, S
[J]. VARIABLE STARS IN THE LOCAL GROUP, 2004, 310 : 242 - 246
[7] Searching for Be Stars in the Open Cluster NGC 663
Lee, C. D.
Yu, P. C.
Lin, C. C.
Chen, W. P.
Ip, W. H.
Ngeow, C. C.
Laher, Russ
Surace, Jason
Kulkarni, Shrinivas R.
[J]. BRIGHT EMISSARIES: BE STARS AS MESSENGERS OF STAR-DISK PHYSICS, 2016, 506 : 271 - 274
[8] Variable stars in the open cluster NGC 7235
Pigulski, A
Jerzykiewicz, M
Kopacki, G
[J]. PROCEEDINGS OF THE 27TH MEETING OF THE POLISH ASTRONOMICAL SOCIETY, 1996, : 102 - 105
[9] SEARCHING FOR Be STARS IN THE OPEN CLUSTER NGC 663
Yu, P. C.
Lin, C. C.
Chen, W. P.
Lee, C. D.
Ip, W. H.
Ngeow, C. C.
Laher, Russ
Surace, Jason
Kulkarni, Shrinivas R.
[J]. ASTRONOMICAL JOURNAL, 2015, 149 (02):
[10] Variable stars in the open cluster NGC 6811
Luo, Y. P.
Zhang, X. B.
Luo, C. Q.
Deng, L. C.
Luo, Z. Q.
[J]. NEW ASTRONOMY, 2009, 14 (06) : 584 - 589

← 1 2 3 4 5 →