Use of high resolution IUE spectra of MG 2 in cool stars to probe the local interstellar medium

Bibcode
1984ESASP.218..139M
Molaro, P.; Beckman, J. E.; Crivellari, L.; Franco, M. L.; Vladilo, G.
Bibliographical reference

In ESA Fourth European IUE Conf. p 139-143 (SEE N84-35135 24-88)

Advertised on:
7
1984
Number of authors
5
IAC number of authors
0
Citations
3
Refereed citations
3
Description
It is shown that, given suitable radial velocity values for the stars and the local interstellar medium (LISM) interstellar absorption can be distinguished from chromospheric self absorption within the MgII emissions from late type stars. Beta Hyi (G2IV) offers a clear example. Zeta Tuc (G2V) and delta Pav (G8V) which are very close to beta Hyi show similar narrow MgII absorption features, which are also interpretable as interstellar. Narrow MgII absorptions in the rapidly rotating F-type stars beta TrA and alpha Hyi are reported. The absence of IS Mg II in the stars tau Cet and 24UMa confirms the presence of a hole in the LISM near galactic longitude 150 deg.
Type
Non-refereed
F stars
Radial velocity

It may interest you

  • Non-refereed
    Workshop summary: Kaons@CERN 2023

    Kaon physics is at a turning point - while the rare-kaon experiments NA62 and KOTO are in full swing, the end of their lifetime is approaching and the future experimental landscape needs to be defined. With HIKE, KOTO-II and LHCb-Phase-II on the table and under scrutiny, it is a very good moment in time to take stock and contemplate about the

    Anzivino, G. et al.

    Advertised on:

    4
    2024
    Bibcode
    2024EPJC...84..377A
    Citations
    0
  • Non-refereed
    Nodal Precession of a Hot Jupiter Transiting the Edge of a Late A-Type Star TOI-1518

    TOI-1518b, a hot Jupiter around a late A-type star, is one of the few planetary systems that transit the edge of the stellar surface (the impact parameter b~0.9) among hot Jupiters around hot stars (Cabot et al. 2021). The host star's high rotation speed (Vsini s~85 km s -1) and the planet's nearly polar orbit (λ~120 deg) may cause a nodal

    Watanabe, Noriharu et al.

    Advertised on:

    4
    2024
    Bibcode
    2024ESS.....561705W
    Citations
    0
  • Non-refereed
    Observational evidence of different formation mechanisms of Solar System-type architectures across spectral types

    Despite being the most abundant classes of known exoplanets, super-Earths and mini-Neptunes are absent in our Solar System, and the exact reason for this is still unknown. Some models suggest that cold-Jupiters play a major role in the formation of inner low-mass planets. This could explain the current architecture of our Solar System, and the

    Pinamonti, Matteo et al.

    Advertised on:

    4
    2024
    Bibcode
    2024ESS.....560801P
    Citations
    0