Reddenings derived from H I and galaxy counts - Accuracy and maps

Burstein, David; Heiles, C.

doi:10.1086/113199

Cited by 1,017 publications

(993 citation statements)

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“…Two comparison fields were used for NGC 2477 since none yet exist which closely match its Galactic position and reddening. One field is at l,b = 85, -3.5 and has E(B-V) ≥ 0.39, whereas the other is at l,b = 202, +9 and has E(B-V) ≥ 0.18 (Burstein & Heiles 1982). NGC 2477 is at l,b = 254, -5.8.…”

Section: Discussionmentioning

confidence: 97%

The Metallicity Dependence of the Stellar Luminosity and Initial Mass Function: HST Observations of Open and Globular Clusters

Hippel¹,

Gilmore²,

Tanvir³

et al. 1996

The Astronomical Journal

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Using HST and the WFPC2 we have acquired very deep V-and I-band photometry of stars in NGC 2420 and NGC 2477 to study cluster luminosity functions at approximately solar metallicity. We have determined these cluster luminosity functions down to M I = 10.5 (0.2 M ⊙ ) and find that the luminosity function of NGC 2420 turns over at M I ≈ 9.0, and possibly stops altogether by M I ≈ 9.5. The luminosity function of NGC 2477 may flatten at M I ≥ 9.5. We compare our open cluster luminosity functions to the solar neighborhood field star luminosity function of Kroupa, Tout & Gilmore (1993) Saumon 1995;Alexander et al. 1996). We interpret this smooth and systematic behavior in the cluster luminosity functions as strong evidence in favor of an invariant initial mass function and a metallicity-dependent mass-luminosity relation.

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Section: Discussionmentioning

confidence: 97%

The Metallicity Dependence of the Stellar Luminosity and Initial Mass Function: HST Observations of Open and Globular Clusters

Hippel¹,

Gilmore²,

Tanvir³

et al. 1996

The Astronomical Journal

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“…Heckman et al (1991) find extended UV continuum and Lya emission surrounding 4C + 09.17. The resolved Lya flux is ~4 X 10-15 erg cm-2 s-I, corrected for a Galactic extinction of 0.7 mag at 3800 A (Burstein & Heiles 1982;Savage & Mathis 1979). If the ionized gas around 4C+09.17 has the same Lya-to-Ha emission-line flux ratio as found in high-redshift radio galaxies, i.e., 3.5 (McCarthy, Elston & Eisenhardt 1992), the expected resolved Ha flux is approximately 10-15 erg cm-2 S-1.…”

Section: Component Cmentioning

confidence: 99%

The unusual near-infrared morphology of the radio-loud quasar 4C + 09.17

Armus

Neugebauer

Lehnert³

et al. 1997

Monthly Notices of the Royal Astronomical Society

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“…For a part of stars, their reddenings were estimated by Bartkevicius &;Sperauskas (1983), Bartkevicius & Tautvaisiene (1987) and Bartasiute (1989). Color excesses of the remaining stars were obtained using estimations of interstellar reddening of different authors, among them, the maps of EG-y constructed by Burstein & Heiles (1982) from H I distribution and deep galaxy counts. In the final stage of this work, for calculation of reddening we used the program kindly supplied us by Dr. David Burstein.…”

Section: Set Of Standard Starsmentioning

confidence: 99%

“…Many authors have used the Burstein & Heiles (1982) reddening maps to estimate color excesses for field stars with different metal deficiency (Laird, Carney & Latham 1988;Carney, Latham, Laird & Aguilar 1994;Ryan 1989;Anthony-Twarog & Twarog 1994). However, in all these estimations a doubtful assumption about a uniform distribution of dust along the line of sight to a star was used.…”

Section: Reddeningmentioning

confidence: 99%

Classification of population II stars in the Vilnius photometric system. I. Methods

Bartkevičius¹,

Lazauskaite²

1996

Open Astronomy

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Abstract.The methods used for classification of Population II stars in the Vilnius photometric system are described. An extensive set of standards with known astrophysical parameters compiled from the literature sources is given. These standard stars are classified in the Vilnius photometric system using the methods described. The accuracy of classification is evaluated by a comparison of the astrophysical parameters derived from the Vilnius photometric system with those estimated from spectroscopic studies as well as from photometric data in other systems. For dwarfs and subdwarfs, we find a satisfactory agreement between our reddenings and those estimated in the uvby/3 system. The standard deviation of [Fe/H] determined in the Vilnius system is about 0.2 dex. The absolute magnitude for dwarfs and subdwarfs is estimated with an accuracy of <0.5 mag.

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Reddenings derived from H I and galaxy counts - Accuracy and maps

Cited by 1,017 publications

References 0 publications

The Metallicity Dependence of the Stellar Luminosity and Initial Mass Function: HST Observations of Open and Globular Clusters

The Metallicity Dependence of the Stellar Luminosity and Initial Mass Function: HST Observations of Open and Globular Clusters

The unusual near-infrared morphology of the radio-loud quasar 4C + 09.17

Classification of population II stars in the Vilnius photometric system. I. Methods

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