The zero point of extinction toward Baade's window from K giants

被引：25

作者：

Gould, A ^{[1
]}

Popowski, P ^{[1
]}

Terndrup, DM ^{[1
]}

机构：

[1] Ohio State Univ, Dept Astron, Columbus, OH 43210 USA

来源：

ASTROPHYSICAL JOURNAL | 1998年 / 492卷 / 02期

关键词：

dust; extinction; Hertzsprung-Russell diagram; stars; late-type; variables; other (RR Lyrae);

D O I：

10.1086/305062

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We measure the zero point of the Stanek extinction map by comparing the observed (V-K) colors of 206 K giant stars with their intrinsic (V-K)(0) colors as derived from their H beta indices. We find that the zero point of the Stanek map should be changed by Delta A(V) = -0.10+/-0.06 mag, obtaining as a bonus a threefold reduction of the previous statistical error. The most direct way to test for systematic errors in this determination would be to conduct a parallel measurement based on the (V-K) colors of type ab RR Lyrae stars.

引用

收藏

页码：778 / 781

页数：4

相关论文

共 20 条

[1] PROPERITIES OF GALACTIC NUCLEUS IN DIRECTION OF NGC 6522 [J].

ARP, H .

ASTROPHYSICAL JOURNAL, 1965, 141 (01) :43-&

[2] GIANT M-STARS IN BAADES WINDOW [J].

BLANCO, VM ;

MCCARTHY, MF ;

BLANCO, BM .

ASTRONOMICAL JOURNAL, 1984, 89 (05) :636-647

[3] REDDENINGS OF CEPHEIDS USING BVI PHOTOMETRY [J].

DEAN, JF ;

WARREN, PR ;

COUSINS, AWJ .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1978, 183 (03) :569-583

[4] OLD STELLAR POPULATIONS .2. AN ANALYSIS OF K-GIANT SPECTRA [J].

FABER, SM ;

FRIEL, ED ;

BURSTEIN, D ;

GASKELL, CM .

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 1985, 57 (04) :711-741

[5] OLD STELLAR POPULATIONS .4. EMPIRICAL FITTING FUNCTIONS FOR FEATURES IN THE SPECTRA OF G-STARS AND K-STARS [J].

GORGAS, J ;

FABER, SM ;

BURSTEIN, D ;

GONZALEZ, JJ ;

COURTEAU, S ;

PROSSER, C .

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 1993, 86 (01) :153-198

[6] THE BAADE-WESSELINK METHOD AND THE DISTANCES TO RR LYRAE STARS .7. THE FIELD STARS SW ANDROMEDAE AND DX DELPHINI AND A COMPARISON OF RECENT BAADE-WESSELINK ANALYSES [J].

JONES, RV ;

CARNEY, BW ;

STORM, J ;

LATHAM, DW .

ASTROPHYSICAL JOURNAL, 1992, 386 (02) :646-662

[7] KINEMATICS AND ABUNDANCES OF K-GIANTS IN THE NUCLEAR BULGE OF THE GALAXY [J].

RICH, RM .

ASTROPHYSICAL JOURNAL, 1990, 362 (02) :604-619

[8] EFFECTIVE TEMPERATURES OF LATE-TYPE STARS - FIELD GIANTS FROM K0 TO M6 [J].

RIDGWAY, ST ;

JOYCE, RR ;

WHITE, NM ;

WING, RF .

ASTROPHYSICAL JOURNAL, 1980, 235 (01) :126-137

[9] THE INTERSTELLAR EXTINCTION LAW FROM 1 TO 13 MICRONS [J].

RIEKE, GH ;

LEBOFSKY, MJ .

ASTROPHYSICAL JOURNAL, 1985, 288 (02) :618-621

[10] OPTICAL SEARCH FOR IONIZED HYDROGEN IN GLOBULAR CLUSTERS [J].

SMITH, MG ;

HESSER, JE ;

SHAWL, SJ .

ASTROPHYSICAL JOURNAL, 1976, 206 (01) :66-78