Photometric classification of stars and interstellar extinction near the Camelopardalis and Perseus border

Zdanavicius, J.; Cernis, K.; Zdanavičius, K.; Straižys, V.

doi:10.1515/astro-2001-0303

Cited by 15 publications

(23 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When their reddenings are calculated individually, they support a value of R = 3.0, in good agreement with the photometric determination of Zdanavičius et al (2005). Their average distance modulus is 13.0 ± 0.4, in good agreement with previous determinations based on fewer stars.…”

Section: Discussionsupporting

confidence: 85%

“…This value is compatible within errors with the standard value. Based on a photometric study of stars in the area, Zdanavičius et al (2005) conclude that R = 2.9, in very good agreement with our value, and that extinction is caused mostly by material at <1.5 kpc from the Sun. This result justifies the assumption of standard reddening used when dereddening the Strömgren photometry in Sect.…”

Section: Ls I +56supporting

confidence: 89%

“…In their photometric study of this area, Zdanavičius et al (2005) failed to find any evidence of the Perseus arm, either as an increase in extinction or a concentration of stars. The lack of intervening material allows the identification of Cygnus arm tracers.…”

Section: Cam Ob3 and The Cygnus Armmentioning

confidence: 93%

“…The sequence shows little spread in E(b − y) (see following section), making it unlikely that main-sequence members with higher reddenings are left out. Moreover, Zdanavičius et al (2005) argue that most of the reddening in this direction originates close to the Sun. The young age of Alicante 1 (see Sect.…”

Section: Photometrymentioning

confidence: 99%

See 3 more Smart Citations

Stellar tracers of the Cygnus Arm

Negueruela¹,

Marco²

2008

A&A

View full text Add to dashboard Cite

Context. Cam OB3 is the only defined OB association believed to belong to the outer Galactic arm or Cygnus arm. Very few members have been observed and the distance modulus to the association is not well known. Aims. We attempt a more complete description of the population of Cam OB3 and a better determination of its distance modulus. Methods. We present uvby photometry of the area surrounding the O-type stars BD +56• 864 and LS I +57• 138, finding a clear sequence of the early-type stars that define an uncatalogued open cluster, which we call Alicante 1. We also present spectroscopy of stars in this cluster and the surrounding association. Results. From the spectral types for 18 very likely members of the association and UBV photometry found in the literature, we derive individual reddenings, finding a extinction law close to standard and an average distance modulus DM = 13.0 ± 0.4. This value is in excellent agreement with the distance modulus to the new cluster Alicante 1 found by fitting the photometric sequence to the ZAMS. In spite of the presence of several O-type stars, Alicante 1 is a very sparsely populated open cluster, with an almost total absence of early B-type stars. Conclusions. Our results definitely confirm that Cam OB3 is located on the Cygnus arm and identify the first open cluster known to belong to the association.

show abstract

Section: Discussionsupporting

confidence: 85%

Section: Ls I +56supporting

confidence: 89%

Section: Cam Ob3 and The Cygnus Armmentioning

confidence: 93%

Section: Photometrymentioning

confidence: 99%

See 2 more Smart Citations

Stellar tracers of the Cygnus Arm

Negueruela¹,

Marco²

2008

A&A

View full text Add to dashboard Cite

show abstract

“…• is occupied by the Camelopardalis dark clouds which are amongst the closest dust formations in the solar vicinity (Zdanavicius et al 2001). The HII region S205 (Sharpless 1959) which is of interest has its northern half in the Camelopardalis and the southern half in the Perseus constellation.…”

Section: Region 1: L = 149 •mentioning

confidence: 99%

The effect of HII regions on rotation measure of pulsars

Mitra

Wielebinski

Krämer

et al. 2003

A&A

View full text Add to dashboard Cite

Abstract. We have obtained new rotation measures for 11 pulsars observed with the Effelsberg 100-m radio telescope, in the direction of the Perseus arm. Using a combination of 34 published and the 11 newly measured pulsar rotation measures we study the magnetic field structure towards the Perseus arm. We find that two pulsars towards l ∼ 149• (Region 1) and four pulsars towards l ∼ 113• (Region 2) lie behind HII regions which seriously affect the pulsar rotation measures. The rotation measure of PSR J2337+6151 seems to be affected by its passage through the supernova remnant G114.3+0.3. For Region 1, we are able to constrain the random component of the magnetic field to 5.7 µG. For the large-scale component of the Galactic magnetic field we determine a field strength of 1.7 ± 1.0 µG. This average field is constant on Galactic scales lying within the Galactic longitude range of 85• < l < 240• and we find no evidence for large scale field reversal upto 5-6 kpc. We highlight the great importance to include the effects of foreground emission in any systematic study.

show abstract

The dark cloud TGU H994 P1 (LDN 1399, LDN 1400, and LDN 1402): Interstellar extinction and distance

Straižys

Čepas

Boyle

et al. 2015

A&A

Self Cite

View full text Add to dashboard Cite

The results of CCD photometry in the seven-colour Vilnius system, for about 1000 stars down to V = 20 mag and their twodimensional spectral types, are used to investigate the interstellar extinction in a 1.5 square degree area in the direction of the dark cloud TGU H994 P1 (LDN 1399, LDN 1400 and LDN 1402) in Camelopardalis. Photometric classification of 18 brightest stars down to V = 12 mag was verified by the spectra obtained with the 1.22 m telescope of the Asiago Observatory. The interstellar extinction run with distance is investigated with the results of photometry in the Vilnius system, and 504 red clump giants, identified by combining the results of infrared photometry from the 2MASS and WISE surveys. A possible distance of 140 ± 11 pc to the TGU H994 P1 cloud seems to be acceptable. Alternative distances of the cloud are discussed. The complex of the Camelopardalis clouds probably has a considerable depth along the line of sight, similar to that observed in the Taurus-Auriga complex. The maximum extinction A V in the dark filaments is found to be about 6.5 mag.

show abstract

Photometric classification of stars and interstellar extinction near the Camelopardalis and Perseus border

Cited by 15 publications

References 0 publications

Stellar tracers of the Cygnus Arm

Stellar tracers of the Cygnus Arm

The effect of HII regions on rotation measure of pulsars

The dark cloud TGU H994 P1 (LDN 1399, LDN 1400, and LDN 1402): Interstellar extinction and distance

Contact Info

Product

Resources

About