2023 SDSS-V Collaboration Meeting

Session

Session 13

Aug 3, 2023, 1:30 PM

Gerald D. Fischbach Auditorium/2-GDFA (160 5th Avenue)

Conveners

Session 13

• Maddie Lucey

71. BOSS Net: self-consistent model of determining stellar parameters for optical spectra in SDSS-V

Diego Llanes (REMOTE), Logan Sizemore (REMOTE)

8/3/23, 1:30 PM

Throughout SDSS-III and -IV, multiple pipelines have been developed to extract stellar properties from APOGEE spectra. Among them, APOGEE Net stands out due to: a) its speed, and b) the ability to predict stellar parameters (such as Teff, logg, and Fe/H) for all stars with Teff ranging between 3,000 and 50,000 K, including pre-main sequence stars, OB stars, main sequence dwarfs, and red...

72. Studying the magnetized protoplanetary disk winds with optical spectroscopy of forbidden emission lines

Ahmad Nemer

8/3/23, 1:42 PM

Protoplanetary disk (PPD) winds play an important role in disk dispersal. Constraining disk wind models, along with accretion and jets, is necessary to understand its evolution, and eventually, planet formation. We trace these winds with optical forbidden emission lines of [OI], [SII], [NII], and [NeII] to estimate the wind kinematics and mass loss rates. The emission lines are comprised of...

73. Exploring the Origin of the Distance Bimodality of Stars in the Periphery of the Small Magellanic Cloud with APOGEE and Gaia

Andres Almeida

8/3/23, 1:54 PM

Given its proximity and dramatic dynamical history, the Magellanic Cloud system represents a unique laboratory for the study of not only interacting dwarf galaxies but the ongoing process of the formation of the Milky Way and its halo. Here we focus on one aspect of the complex, 3-body interaction — the dynamical perturbation of the Small Magellanic Cloud (SMC) by the Large Magellanic Cloud...

74. Studying Star Clusters in the Magellanic Clouds using the LVM

Bruno Dias

8/3/23, 2:06 PM

The Magellanic Clouds are a pair of galaxies currently in their first infall into the Milky Way, and the effects of their close interaction are evident in their structure, star formation, and gas budget. The star cluster population in the outskirts of the Large Magellanic Cloud (LMC) and Small Magellanic Cloud (SMC) can provide insight into the disturbed structures, as their full 6D...

76. Everything you need to know about The First Dredge-Up

Jack Roberts

8/3/23, 2:18 PM

The surface [C/N] ratios of evolved giants are strongly affected by the first dredge-up (FDU) of nuclear processed material from stellar cores and have therefore been used as a mass diagnostic. Past studies have assumed scaled solar mixtures of carbon and nitrogen. We use subgiants identified in APOGEE DR17 to map out the birth trends of these elements. We find [C/N] has strong trends with...

77. Extreme Variability in Quasar Broad Line Profile Shapes in SDSS V

Sara Frederic

8/3/23, 2:30 PM

The All-Quasar Multi-Epoch Spectroscopy (AQMES) Survey in the fifth iteration of the Sloan Digital Sky Survey (SDSS V) will yield multi-epoch spectroscopy for approximately 20,000 quasars on long timescales of years to decades. This program is complementary to ongoing reverberation mapping campaigns, as it provides the opportunity to monitor the variability of broad emission-line shapes that...

75. Orbital Torus Imaging: Using elemental abundances to map orbital structure and mass in the Galactic disc

Danny Horta