New nearby white dwarfs from gaia DR1 TGAS and UCAC5/URAT
<i>Aims.<i/> Using an accurate <i>Tycho-Gaia<i/> Astrometric Solution (TGAS) 25 pc sample that is nearly complete for GK stars and selecting common proper motion (CPM) candidates from the 5th United States Naval Observatory CCD Astrograph Catalog (UCAC5), we search for new wh...
Gespeichert in:
| Hauptverfasser: | , , |
|---|---|
| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
25 May 2018
|
| In: |
Astronomy and astrophysics
Year: 2018, Jahrgang: 613, Pages: A26 |
| ISSN: | 1432-0746 |
| DOI: | 10.1051/0004-6361/201731753 |
| Online-Zugang: | Verlag, Volltext: http://dx.doi.org/10.1051/0004-6361/201731753
|
| Verfasserangaben: | R.-D. Scholz, H. Meusinger, and H. Jahreiß |
MARC
| LEADER | 00000caa a2200000 c 4500 | ||
|---|---|---|---|
| 001 | 1588369412 | ||
| 003 | DE-627 | ||
| 005 | 20220815115554.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 190306s2018 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.1051/0004-6361/201731753 |2 doi | |
| 035 | |a (DE-627)1588369412 | ||
| 035 | |a (DE-576)518369412 | ||
| 035 | |a (DE-599)BSZ518369412 | ||
| 035 | |a (OCoLC)1341040912 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rda | ||
| 041 | |a eng | ||
| 084 | |a 29 |2 sdnb | ||
| 100 | 1 | |a Scholz, Ralf-Dieter |e VerfasserIn |0 (DE-588)117984243X |0 (DE-627)1067520600 |0 (DE-576)518378691 |4 aut | |
| 245 | 1 | 0 | |a New nearby white dwarfs from gaia DR1 TGAS and UCAC5/URAT |c R.-D. Scholz, H. Meusinger, and H. Jahreiß |
| 264 | 1 | |c 25 May 2018 | |
| 300 | |a 9 | ||
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a Computermedien |b c |2 rdamedia | ||
| 338 | |a Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Gesehen am 06.03.2019 | ||
| 520 | |a <i>Aims.<i/> Using an accurate <i>Tycho-Gaia<i/> Astrometric Solution (TGAS) 25 pc sample that is nearly complete for GK stars and selecting common proper motion (CPM) candidates from the 5th United States Naval Observatory CCD Astrograph Catalog (UCAC5), we search for new white dwarf (WD) companions around nearby stars with relatively small proper motions.<i>Methods.<i/> To investigate known CPM systems in TGAS and to select CPM candidates in TGAS+UCAC5, we took into account the expected effect of orbital motion on the proper motion and proper motion catalogue errors. Colour-magnitude diagrams (CMDs) <i>M<i/><sub><i>J<i/><sub/> ∕<i>J<i/> − <i>K<i/><sub><i>s<i/><sub/> and <i>M<i/><sub><i>G<i/><sub/> ∕<i>G<i/> − <i>J<i/> were used to verify CPM candidates from UCAC5. Assuming their common distance with a given TGAS star, we searched for candidates that occupied similar regions in the CMDs as the few known nearby WDs (four in TGAS) and WD companions (three in TGAS+UCAC5). The CPM candidates with colours and absolute magnitudes corresponding neither to the main sequence nor to the WD sequence were considered as doubtful or subdwarf candidates.<i>Results.<i/> With a minimum proper motion of 60 mas yr<sup>−1<sup/>, we selected three WD companion candidates; two of which are also confirmed by their significant parallaxes measured in URAT data, whereas the third may also be a chance alignment of a distant halo star with a nearby TGAS star that has an angular separation of about 465 arcsec. One additional nearby WD candidate was found from its URAT parallax and <i>GJK<i/><sub><i>s<i/><sub/> photometry. With HD 166435 B orbiting a well-known G1 star at ≈24.6 pc with a projected physical separation of ≈700 AU, we discovered one of the hottest WDs, classified by us as DA2.0 ± 0.2, in the solar neighbourhood. We also found TYC 3980-1081-1 B, a strong cool WD companion candidate around a recently identified new solar neighbour with a TGAS parallax corresponding to a distance of ≈8.3 pc and our photometric classification as ≈M2 dwarf. This raises the question of whether previous assumptions on the completeness of the WD sample to a distance of 13 pc were correct. | ||
| 700 | 1 | |a Meusinger, Helmut |e VerfasserIn |0 (DE-588)1179842308 |0 (DE-627)1067520090 |0 (DE-576)518378438 |4 aut | |
| 700 | 1 | |a Jahreiß, Hartmut |e VerfasserIn |0 (DE-588)1042848149 |0 (DE-627)76976102X |0 (DE-576)26021969X |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t Astronomy and astrophysics |d Les Ulis : EDP Sciences, 1969 |g 613(2018) Artikel-Nummer A26, 9 Seiten |h Online-Ressource |w (DE-627)253390222 |w (DE-600)1458466-9 |w (DE-576)072283351 |x 1432-0746 |7 nnas |a New nearby white dwarfs from gaia DR1 TGAS and UCAC5/URAT |
| 773 | 1 | 8 | |g volume:613 |g year:2018 |g pages:A26 |g extent:9 |a New nearby white dwarfs from gaia DR1 TGAS and UCAC5/URAT |
| 856 | 4 | 0 | |u http://dx.doi.org/10.1051/0004-6361/201731753 |x Verlag |x Resolving-System |3 Volltext |
| 951 | |a AR | ||
| 992 | |a 20190306 | ||
| 993 | |a Article | ||
| 994 | |a 2018 | ||
| 998 | |g 1042848149 |a Jahreiß, Hartmut |m 1042848149:Jahreiß, Hartmut |d 700000 |d 714000 |d 714100 |e 700000PJ1042848149 |e 714000PJ1042848149 |e 714100PJ1042848149 |k 0/700000/ |k 1/700000/714000/ |k 2/700000/714000/714100/ |p 3 |y j | ||
| 999 | |a KXP-PPN1588369412 |e 3057440487 | ||
| BIB | |a Y | ||
| SER | |a journal | ||
| JSO | |a {"type":{"media":"Online-Ressource","bibl":"article-journal"},"note":["Gesehen am 06.03.2019"],"language":["eng"],"recId":"1588369412","title":[{"title_sort":"New nearby white dwarfs from gaia DR1 TGAS and UCAC5/URAT","title":"New nearby white dwarfs from gaia DR1 TGAS and UCAC5/URAT"}],"person":[{"display":"Scholz, Ralf-Dieter","roleDisplay":"VerfasserIn","role":"aut","family":"Scholz","given":"Ralf-Dieter"},{"roleDisplay":"VerfasserIn","display":"Meusinger, Helmut","role":"aut","family":"Meusinger","given":"Helmut"},{"display":"Jahreiß, Hartmut","roleDisplay":"VerfasserIn","role":"aut","family":"Jahreiß","given":"Hartmut"}],"physDesc":[{"extent":"9 S."}],"relHost":[{"physDesc":[{"extent":"Online-Ressource"}],"name":{"displayForm":["European Southern Observatory (ESO)"]},"id":{"eki":["253390222"],"zdb":["1458466-9"],"issn":["1432-0746"]},"origin":[{"publisher":"EDP Sciences ; Springer","dateIssuedKey":"1969","dateIssuedDisp":"1969-","publisherPlace":"Les Ulis ; Berlin ; Heidelberg"}],"recId":"253390222","language":["eng"],"corporate":[{"roleDisplay":"Herausgebendes Organ","display":"European Southern Observatory","role":"isb"}],"disp":"New nearby white dwarfs from gaia DR1 TGAS and UCAC5/URATAstronomy and astrophysics","note":["Gesehen am 21.06.2024","Erscheint 36mal jährlich in 12 Bänden zu je 3 Ausgaben","Fortsetzung der Druck-Ausgabe"],"type":{"bibl":"periodical","media":"Online-Ressource"},"part":{"extent":"9","volume":"613","text":"613(2018) Artikel-Nummer A26, 9 Seiten","pages":"A26","year":"2018"},"titleAlt":[{"title":"Astronomy & astrophysics"},{"title":"a European journal"}],"pubHistory":["1.1969 -"],"title":[{"title_sort":"Astronomy and astrophysics","title":"Astronomy and astrophysics","subtitle":"an international weekly journal"}]}],"origin":[{"dateIssuedDisp":"25 May 2018","dateIssuedKey":"2018"}],"id":{"doi":["10.1051/0004-6361/201731753"],"eki":["1588369412"]},"name":{"displayForm":["R.-D. Scholz, H. Meusinger, and H. Jahreiß"]}} | ||
| SRT | |a SCHOLZRALFNEWNEARBYW2520 | ||