The Solar Neighborhood. XXXIX. Parallax Results from the CTIOPI and NOFS Programs: 50 New Members of the 25 parsec White Dwarf Sample

被引：52

作者：

Subasavage, John P. ^{[1
]}

Jao, Wei-Chun ^{[2
]}

Henry, Todd J. ^{[3
]}

Harris, Hugh C. ^{[1
]}

Dahn, Conard C. ^{[1
]}

Bergeron, P. ^{[4
]}

Dufour, P. ^{[4
]}

Dunlap, Bart H. ^{[5
,6
]}

Barlow, Brad N.

Ianna, Philip A. ^{[3
]}

Lepine, Sebastien ^{[2
]}

Margheim, Steven J. ^{[7
]}

机构：

[1] US Naval Observ, 10391 West Naval Observ Rd, Flagstaff, AZ 86005 USA

[2] Georgia State Univ, Dept Phys & Astron, Atlanta, GA 30302 USA

[3] RECONS Inst, Chambersburg, PA 17201 USA

[4] Univ Montreal, Dept Phys, CP 6128, Montreal, PQ H3C 3J7, Canada

[5] Univ N Carolina, Dept Phys & Astron, Chapel Hill, NC 27599 USA

[6] High Point Univ, Dept Phys, One Univ Pkwy, High Point, NC 27268 USA

[7] Southern Operat Ctr, Gemini Observ, Casilla 603, La Serena, Chile

来源：

ASTRONOMICAL JOURNAL | 2017年 / 154卷 / 01期

基金：

美国国家科学基金会;

关键词：

astrometry; Galaxy: evolution; solar neighborhood; stars: distances; white dwarfs; PHOTOMETRIC STANDARD STARS; PROPER MOTION STARS; SKY SURVEY; NEARBY STARS; SPECTROSCOPIC IDENTIFICATION; MODEL ATMOSPHERES; MAGNETIC-FIELDS; SOUTHERN SKY; COOL; DISCOVERY;

D O I：

10.3847/1538-3881/aa76e0

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present 114 trigonometric parallaxes for 107 nearby white dwarf (WD) systems from both the Cerro Tololo Inter-American Observatory Parallax Investigation (CTIOPI) and the U. S. Naval Observatory Flagstaff Station (NOFS) parallax programs. Of these, 76 parallaxes for 69 systems were measured by the CTIOPI program and 38 parallaxes for as many systems were measured by the NOFS program. A total of 50 systems are confirmed to be within the. 25-pc horizon of interest. Coupled with a spectroscopic confirmation of a common proper-motion companion to a Hipparcos star within 25 pc as well as confirmation parallax determinations for two WD systems included in the recently released Tycho Gaia Astrometric Solution catalog, we add 53 new systems to the 25-pc WD sample-a 42% increase. Our sample presented here includes four strong candidate halo systems, a new metal-rich DAZ WD, a confirmation of a recently discovered nearby short-period (P = 2.85 hr) double degenerate, a WD with a new astrometric perturbation (long period, unconstrained with our data), and a new triple system where the WD companion main-sequence star has an astrometric perturbation (P similar to 1.6 year).

引用

页数：24

共 100 条

[1] THE ELEVENTH AND TWELFTH DATA RELEASES OF THE SLOAN DIGITAL SKY SURVEY: FINAL DATA FROM SDSS-III [J].

Alam, Shadab ;

Albareti, Franco D. ;

Allende Prieto, Carlos ;

Anders, F. ;

Anderson, Scott F. ;

Anderton, Timothy ;

Andrews, Brett H. ;

Armengaud, Eric ;

Aubourg, Eric ;

Bailey, Stephen ;

Basu, Sarbani ;

Bautista, Julian E. ;

Beaton, Rachael L. ;

Beers, Timothy C. ;

Bender, Chad F. ;

Berlind, Andreas A. ;

Beutler, Florian ;

Bhardwaj, Vaishali ;

Bird, Jonathan C. ;

Bizyaev, Dmitry ;

Blake, Cullen H. ;

Blanton, Michael R. ;

Blomqvist, Michael ;

Bochanski, John J. ;

Bolton, Adam S. ;

Bovy, Jo ;

Bradley, A. Shelden ;

Brandt, W. N. ;

Brauer, D. E. ;

Brinkmann, J. ;

Brown, Peter J. ;

Brownstein, Joel R. ;

Burden, Angela ;

Burtin, Etienne ;

Busca, Nicolas G. ;

Cai, Zheng ;

Capozzi, Diego ;

Rosell, Aurelio Carnero ;

Carr, Michael A. ;

Carrera, Ricardo ;

Chambers, K. C. ;

Chaplin, William James ;

Chen, Yen-Chi ;

Chiappini, Cristina ;

Chojnowski, S. Drew ;

Chuang, Chia-Hsun ;

Clerc, Nicolas ;

Comparat, Johan ;

Covey, Kevin ;

Croft, Rupert A. C. .

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2015, 219 (01)

[2] On the interpretation of high-velocity white dwarfs as members of the galactic halo [J].

Bergeron, P ;

Ruiz, MT ;

Hamuy, M ;

Leggett, SK ;

Currie, MJ ;

Lajoie, CP ;

Dufour, P .

ASTROPHYSICAL JOURNAL, 2005, 625 (02) :838-848

[3] NEW MODEL ATMOSPHERES FOR VERY COOL WHITE-DWARFS WITH MIXED H/HE AND PURE HE COMPOSITIONS [J].

BERGERON, P ;

SAUMON, D ;

WESEMAEL, F .

ASTROPHYSICAL JOURNAL, 1995, 443 (02) :764-779

[4] A critical examination of halo white dwarf candidates [J].

Bergeron, P .

ASTROPHYSICAL JOURNAL, 2003, 586 (01) :201-209

[5] The chemical evolution of cool white dwarfs and the age of the local galactic disk [J].

Bergeron, P ;

Ruiz, MT ;

Leggett, SK .

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 1997, 108 (01) :339-387

[6] SExtractor: Software for source extraction [J].

Bertin, E ;

Arnouts, S .

ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES, 1996, 117 (02) :393-404

[7]

Bertin E, 2011, ASTR SOC P, V442, P435

[8] THE SOLAR NEIGHBORHOOD. XXVII. DISCOVERY OF NEW PROPER MOTION STARS WITH μ ≥ 0".18 yr-1 IN THE SOUTHERN SKY WITH 16.5 < R59F ≤ 18.0 [J].

Boyd, Mark R. ;

Henry, Todd J. ;

Jao, Wei-Chun ;

Subasavage, John P. ;

Hambly, Nigel C. .

ASTRONOMICAL JOURNAL, 2011, 142 (03)

[9] Color transformations for the 2MASS Second Incremental Data Release [J].

Carpenter, JM .

ASTRONOMICAL JOURNAL, 2001, 121 (05) :2851-2871

[10] The UKIRT wide-field camera [J].

Casali, M. ;

Adamson, A. ;

de Oliveira, C. Alves ;

Almaini, O. ;

Burch, K. ;

Chuter, T. ;

Elliot, J. ;

Folger, M. ;

Foucaud, S. ;

Hambly, N. ;

Hastie, M. ;

Henry, D. ;

Hirst, P. ;

Irwin, M. ;

Ives, D. ;

Lawrence, A. ;

Laidlaw, K. ;

Lee, D. ;

Lewis, J. ;

Lunney, D. ;

McLay, S. ;

Montgomery, D. ;

Pickup, A. ;

Read, M. ;

Rees, N. ;

Robson, I. ;

Sekiguchi, K. ;

Vick, A. ;

Warren, S. ;

Woodward, B. .

ASTRONOMY & ASTROPHYSICS, 2007, 467 (02) :777-784

← 1 2 3 4 5 6 7 8 9 10 →